AbstractAromatic volatile organic compounds (VOCs) proved to have enhanced polluting behavior upon the atmosphere and human health. Their catalytic destruction is an alternative for environmental pollution reduction in the case of gaseous emissions with low contents of VOC.In this paper, an experimental study is presented, concerning the conversion of benzene and its mono-halogenated derivatives on SCR-DeNOx (V2O5-WO3/TiO2) commercial catalyst, specific for the reduction process of nitrogen oxid...
Autori: Florin Bandrabur, Heinz Koser, Ion Balasanian, Liliana Lazar
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25105

Contine urmatoarele articole:??Â?Â? Alternative energy sources in transition countries. The case of bioenergy in Ukraine??Â?Â? Catalytic destruction of aromatic VOCs on SCR-DeNOx commercial catalyst??Â?Â? Ecological Economics And Transport Systems??Â?Â? Bioleaching of uranyl ions from uranium ores by some algae??Â?Â? Irreversible affinity immobilization of lentil seedling??Â?Â? Evaluation of artificial neural network techniques for river flow forecasting??Â?Â? Hydrogen and sustainable energy. Re...
Autori:
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25194

An aliphatic-amine-bearing chromatographic support, based on commercial silica, was prepared and tested as potential matrix for affinity immobilization of a copper/topaquinone-containing amine oxidase from lentil seedlings. The support proved to be noticeably effective in immobilizing the enzyme with concomitant purification and activity retention. The immobilization yields and some properties of this preparation were also determined and compared with those of the soluble enzyme. High activity r...
Autori: Barbara Noli, Enrico Sanjust, Francesca Sollai, Giovanni Floris
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25108

Iinclude urmatoarele articole:� Process water of papermaking: model building and characterization� Landfill inventory in the Republic of Moldova: problems and solutions� Floodplain revegetation and river basin restoration� Environmental problems of copper complex in Bor area� Researches on air micro flora determination from public indoor spaces and hospital wards in an urban area� Current practice of solid waste management in Malaysia and its disposal� An assessment of potential he...
Autori:
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25199

AbstractThe corrosion behaviour of three commercial nickel-chromium based dental materials was investigated by electrochemical methods in a corroding mixture of sodium chloride, oxalic acid and lactic acid. In order to establish electrochemical parameters of the corrosion process, linear and cyclic polarization curves were plotted. The samples performances in the corroding system were investigated by weight loss, pH and electrical conductivity measurements. The quantitative analysis related with...
Autori: , Daniel Mareci, Daniel Sutiman, Mircea Teodor Nechita
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25132

AbstractElectrochemical impedance spectroscopy (EIS) measurements were used to characterize the electrochemical behaviour of the some commercial dental alloys: two PdAg based alloys (Paliag, PaliagMaestro), two NiCr based alloys (Wirolloy, VeraSoft), two CoCr based alloys (Vitallium, VeraPDI) and two CuAl based alloys (Gaudent, NPG+2) in artificial saliva. Impedance spectra were represented in the form of Bode plots and it was fitted using a commercial softwere package called Electrochemistry Po...
Autori: Daniel Mareci, Gina Ungureanu, Julia Claudia Mirza Rosca, Neculai Aelenei, Romeo Chelariu
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25143

Include urmatoarele articole:� Removal of persistent organic pollutants from textile wastewater by membrane processes� Sustainability evaluation of an urban residential settlement� Removal of zinc (II) from aqueous solutions by romanian sphagnum peat moss� Development trends of cold plasma reactors in the global context of carbon emission reduction� Assessing the potential of wind power in Romania within Kyoto targets� Research on the impact induced in the environment by milk process...
Autori:
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25198

? Kinetics considerations concerning the oxidative degradation by photo-fenton process of some antibiotics ? Catalytic wet hydrogen peroxide oxidation of 4-chlorophenol over iron-exchanged clays ? Researches on the negative effects assessment (slugging, clogging, ash deposits) developed at the biomass-coal co-firing ? Contribution to the study of the environmental heritage of a former chemical plant ? Impact of chemicals on derivatives with important therapeutic activity in C...
Autori:
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25376

Include urmatoarele articole:� "Waste not, want not" a study of household attitude toward recycling of solid wastes� A kinetic model for the crystal violet mineralization in water by the electro- fenton process� Development of a coagulation/flocculation predictive model for turbidity removal from tehran water treatment plants� Removal of cadmium (II) from aqueous solutions by sphagnum moss peat: Equilibrium study� Environmental sustainability based on fuzzy models� Impact of dust emi...
Autori:
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25207

AbstractIn this paper, the application of the heterogeneous photocatalysis in degradation of a cationic copper phtalocyanine dye, used as model of persistent organic compound is investigated by assessing the efficiency of the process. The influence of hydrogen peroxide on the photocatalytic process is studied using two types of commercial catalysts, such as TiO2 Degussa (88% anatase, 20% rutile) and TiONa Millennium (100% anatase). Another electron acceptor, FeCl3 is also used for investigation ...
Autori: Anca Florentina Caliman, , , Ioannis Poulios, Maria Gavrilescu
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25211

AbstractBased on the polarization curves and electrochemical impedance spectroscopy (EIS) in the case of three commercial alloys (Wirolloy, NicromalSoft and VeraSoft) maintained in artificial saliva, it was established the type and the intensity of the corrosion process by means of the corrosion currents value. The passivation of all the samples occurred spontaneously at the open circuit potential. The corrosion currents value decrease after the alloys maintenance in the corrosive medium due the...
Autori: Daniel Mareci, Gina Ungureanu, Julia Claudia Mirza Rosca, Neculai Aelenei
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25235

AbstractCatalytic combustion of methyl isobutyl ketone in diluted air streams over Pt/Al2O3 commercial catalyst was experimentally investigated. The experiments were carried out at space velocities between 180 000 - 600 000 cm3/ (gcat¡h) and ketone concentrations in the range of 900 - 2600 ppmv. On the studied domain of working parameters, carbon monoxide was not detected, although some organic intermediates were formed (especially acetic acid). Their presence was detected in the product mixtur...
Autori: Anamaria Soare, Cristina Gheorghiu, Grigore Bozga, Magdalena Boşomoiu
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25271

AbstractNowadays, energetic utilization of biomass, biotechnology attracts a big attention not only from the environmental point of view but also have a social, political and economical impact. According to the Directive 2003/30/EC of the European Parliament and the European Council the emission of greenhouse gases can be reduced by 49% using bioethanol produced by a manufacturing process based on corn, instead of crude oil based fuels. Moreover in Hungary from 1st of July 2007 only gasoline wit...
Autori: , , Gyula Marton, , Jenő Hancsók, Tatiana Yuzhakova
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25312

AbstractGroundwater is an important source of drinking water, especially for rural population. In the last years, bacteria, nitrate, organic chemicals and other pollutants existing in groundwater have increased public concern about the quality of groundwater. Groundwater provides about 22% of all freshwater withdrawals; 37% of agricultural use (mostly for irrigation); 37% of the public water supply withdrawals; 51% of all drinking water for the total population and 99% of drinking water for the ...
Autori: Ancuţa Rotaru, Paulica Raileanu
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25329

AbstractThe electrochemical behaviour of Ti6Al4V and Ti6Al4Zr alloys has been evaluated in Ringer's solution at 250C. The effect of the substitution of vanadium in Ti6Al4V alloy has been specifically addressed. The evaluation of the corrosion resistance was carried out through the analysis of the open circuit potential variation with time, potentiodynamic polarization curves, and electrochemical impedance spectroscopy (EIS) tests. Very low current densities were obtained (order of nA/cm2) from t...
Autori: Adrian Cailean, Daniel Mareci, Daniel Sutiman, Igor Creţescu
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25334

AbstractTitanium alloys show attractive properties for biomedical applications where the most important factors are biocompatibility, corrosion resistance, low modulus of elasticity, very good strength-to-weight ratio, reasonable formability and osseointegration. The aim of present study was to evaluate the electrochemical behaviour of Ti6Al7Nb alloy in Ringer’s solution of different pH. This evaluation was carried out through the analysis of the potentiodynamic polarization curves, and electr...
Autori: Daniel Mareci, Julia Claudia Mirza Rosca, Marina Garcia Falcon
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25363

Include urmatoarele articole:� Environmental Engineering and Management Journal, Vol. 8 Nr. 2� Bioengineering aspects of tissues culture bioreactors for medicine and environmental applications� Removal of bis (1-chloro-2-propyl) ether from wastewater using sonodegradation and biodegradation� A novel plasma reactor for toluene decomposition in contaminated air flow� Study of the copper (II) removal from aqueous solutions by chelating resin Purolite S930 � Analysis of some metal levels...
Autori:
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25371

â€? Bioremediation of contaminated air using a bioscrubberâ€? Quality risk evaluation of the groundwater resources on the moldavian areaâ€? Electrochemical characterization of some dental materials in accelerated environmental testingâ€? Preliminary study of simple and Fenton oxidation with hydrogen peroxide applied on final effluents from a zootechnical farmâ€? The environmental impact assessment caused by the dykes failureâ€? Revaluation of beer industry byproducts – medical implicationsâ€? ...
Autori: http://www.ecozone.ro/reviste.php?RID=25372

AbstractThe paper proposes a simple and less expensive gas chromatographic method for analyzing acrylamide in food and reveals comparative results regarding the acrylamide content in commercial and home toasted bread. Validation of the method has been achieved by establishing parameters linearity, limit of detection (LOD = 0.1 mg/L), limit of quantization (LOQ = 0.5 mg/L), precision, stability. Run-to-run precision was determined by carrying out five replicate determinations for three acrylamide...
Autori: Anca Irina Burlacu, Rodica Cuciureanu, Patricia Fitterman, Michel Larroque
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25385

Abstract Human exposure to heavy metals requires special surveillance measures on these elements in human body in order to detect a relation between heavy metal exposure and adverse health effects. The aim of this paper is focused on biomonitoring contamination with heavy metals in fish foodstuffs and in blood, and corroboration of contaminant levels with immunotoxicological effects on target groups of consumers. The final goal is to establish some recommendations on human diet with fish food...
Autori: Aurelia Meghea, Alina Murariu, Cristina Tanase, Eleonora Codorean
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25398

Abstract The paper presents a risk analysis and assessment of the defence linear systems failure (dykes) in case of accidental flood. Also, breach scenarios and hydrographs computation for the corresponding accidental high waters are provided. The impact assessment is highlighted through a global matrix model for costs quantification. It is also presented the flooding computation model for different versions of the linear defence systems and in a correspondent way the Inundation Accidental D...
Autori: Codruta Badaluta-Minda, Gheorghe Creţu
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25433

Abstract The aim of this study is to investigate the electrochemical behavior of a three casting non-precious dental alloys: Vera PDI (Co-Cr based), Heraenium (Ni-Cr based) and NPG+2 (Cu-Al based) three test solutions: artificial saliva (AFNOR, pH = 8), acidified saliva (pH = 2.5) and fluoridated acidified saliva (1000 ppm F-, pH = 2.5). Open circuit potential (EOC) measurement; potentiodynamic polarization curves and electrochemical impedance spectroscopy (EIS) are the electrochemical proce...
Autori: Daniel Mareci, Daniel Sutiman, Adrian Cailean, Julia Claudia Mirza Rosca
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25435

Abstract Arsenic (As)-contaminated drinking water is a major problem around the world. The removal efficiency depends strongly on the size of Fe3O4 sorbents.Fe3O4 prepared in laboratory is more efficient in the removal of As and is also more easily recovered from column of magnetic separator than the commercial materials. This would be beneficial in a water treatment system because the As-contaminated Fe3O4 could be flushed from the column permitting reuse of the separator system. The dispers...
Autori: Ionel Balcu, Adina Segneanu, Marius Mirica, Mirela Iorga, Catalin Badea, Iuliana Firuta Fitigau
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25456

Abstract The paper presents the comparative study regarding the turbidity removal using aluminium sulphate Al2(SO4)3*18H2O and polyaluminum chlorides, Aln(OH)mCl3n-m, commercial name, Sachtoklarr 39, in water treatment plant from Covasna City. The parameters that influence the treatment process and the efficiency of turbidity removal were studied. The water characteristic parameters of Basca Mare and Covasna rivers - the two sources of water alimentation for Covasna water treatment plant were...
Autori: Daniela Simina Stefan, Cristina Costache, Viorica Ruxandu, Monica Balas, Mircea Stefan
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25462

Abstract Certain conventional and alternative carbon-based electrodes, i.e., glassy carbon electrode (GCE) and, commercial boron-doped diamond electrode (BDDE) were investigated and compared for the electrochemical determination and degradation of 2,4-dinitrophenol (2,4-DNP). The electrochemical behavior of electrodes in the presence of target pollutants was investigated using cyclic voltammetry (CV), chronoamperometry (CA), and multiple-pulsed amperometry (MPA). The duality of the electrode ...
Autori: Adriana Bebeselea, Cristina Proca, Florica Manea, Ciprian Radovan, Georgeta Burtica, Joop Schoonman
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25469

Abstract Biofuels represent a possibility for renewable resources conversion, storage and distribution. Today, diesel oil is commercialized only blended with biodiesel, and according to the 30/2003 Directive of the EU, 5.75% of the total fuels used in the transportation sector must be represented by biofuels by the end of 2010. Biodiesel can be produced from vegetable oils, animal fats and used oils. Viscosity is one of the most important characteristics of liquid fuels. The viscosity of liqu...
Autori: Irina Nita, Dan Mandalopol
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25499

Abstract The individual physical, chemical, and biological interactions that determine the exposure of plants and animals to chemicals associated with soils are of great importance in the assessment of contaminants bioavailability. Understanding of bioavailability processes is at last needed to improve the scientific basis of risk assessment and is the purpose of the present research. Since bioavailability processes are embedded within existing human health and ecological risk frameworks, so...
Autori: Brindusa Mihaela Robu, Camelia Smaranda, Florentina Anca Căliman, Laura Carmen Apostol, Lucian Vasile Pavel, Maria Gavrilescu, Raluca Maria Hlihor
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25516

Abstract A prehydrolyzed aluminium chloride (PAC), commercial product selected from a previously studied series, and the electrochemically obtained PAC (E-PAC) were tested as coagulants, comparatively with the classical aluminium sulfate (alum). A new method for producing E-PAC has been applied. The level of turbidity, the amount of total organic carbon, the UV-254 absorbance and the residual aluminium were evaluated, for determining the efficiency of the coagulation process in all situations...
Autori: Adina Pacala, Ilie Vlaicu, Ciprian Radovan
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25569

Abstract Chromium (Cr) is one of the most common metal contaminants in soil because of its use in ore refining, production of steel and alloys, metal plating, tanneries, wood preservation, and pigmentation. In soil environment, the most stable oxidation states of chromium are Cr (III) and Cr (VI). While Cr (III) is considered an essential trace element for the functioning of living organisms, Cr (VI) is toxic and carcinogenic to humans via inhalation for long exposures, since it is easily sol...
Autori: Dumitru Bulgariu, Laura Bulgariu, Maria Gavrilescu, Raluca Maria Hlihor, Vasile Lucian Pavel
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25590

Abstract Commercial pure titanium (Cp-Ti) and titanium alloys are used on large scale in restorative dentistry due to their advantages as compared with other similar materials: chemical inertia, low density, high strength, high corrosion resistance in biological media and increased biocompatibility.The effect of fluoride and pH on the corrosion behaviour of Cp-Ti and a new Ti50Ta alloy were examined by open circuit potential (EOC) measurement, linear polarization, potentiodynamic polarization...
Autori: Daniel Mareci, Daniel Sutiman, Georgiana Ciurescu, Igor Creţescu, Romeo Chelariu
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25591

Abstract The adsorption behavior of bael tree (BT) leaf powder for cadmium ions from aqueous solutions has been investigated as a function of appropriate equilibrium time, adsorbent dose, adsorbate concentrations and pH using a batch system. Studies showed that the pH of aqueous solutions affected cadmium removal as a result of the fact that removal efficiency increased with increasing solution pH. The maximum adsorption was 93.56% at solution pH equal to 6.0, contact time of 30 min and initi...
Autori: Ponnusamy Senthilkumar, Rangasamy Gayathri
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25621

? POLLUTION PREVENTION, A KEY TO ECONOMIC AND ENVIRONMENTAL SUSTAINABILITY ? A COMPARISON BETWEEN DIFFERENT SCENARIOS OF ROMANIAN MUNICIPAL SOLID WASTE TREATMENT BEFORE LANDFILLING ? A STUDY ON ENERGY CONSUMPTION IN ROMANIA ? ENVIRONMENTAL INFLUENCES ON STRESSED METALLIC SURFACES ? ASPECTS OF HYDRODYNAMICS AND MASS TRANSFER IN DIFFUSED AERATION SYSTEMS ? THE STATUS OF SOME SELECTED HEAVY METALS IN ROADSIDE SOILS OF BURSA PROVINCE, TURKEY ? PREPARATION AND CHARACTERI...
Autori:
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25656

? COMPARATIVE CONSIDERATIONS ON THE STRUCTURE OF SOME MOLYBDENUM/NIOBIUM DOUBLE PEROVSKITES OXIDES ? THE INFLUENCE OF THE STORAGE TIME ON THE STABILITY OF BUTTER ? CaCO3 CONTROLLABLE SYNTHESIS BY DOUBLE EXCHANGE METHOD USING CaCl2 RESIDUAL SOLUTIONS ? OPTIMIZATION OF COAGULATION-FLOCCULATION IN THE TREATMENT OF CANAL WATER ? ANODIC DETERMINATION OF PENTACHLOROPHENOL FROM WATER USING CARBON NANOFIBER-BASED COMPOSITE ELECTRODE ? STUDY OF PRECIPITATES GROWTH IN COAGULATION ...
Autori:
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25663

This paper presents a study of the numerical simulation applied for unsymmetrical dimethylhrazine (UDMH) gas dispersion. This study considers an assumed UDMH store conditions and provides important data regarding the relation between the concentration distribution of UDMH and dispersion distance from the source based on the computation fluid dynamic (CFD) software FLUENT. The simulation results show that the ventilation vent and distance of dispersion play an important role in the concentration ...
Autori: Zhiyong Huang, Guofeng Jin, Xuanjun Wanghttp://www.ecozone.ro/reviste.php?RID=25712

Abstract:The operation of solar air heat collectors consists in a sequence of transient regimes, being conditioned by the availability in timeof the solar resource. This paper presents the results of an experimental research on transient regimes of two types of solar air heatcollectors. The absorbers of the collectors have different configurations and are made of different materials. One collector is acommercial passage air collector with the absorber made of aluminum. The other collector is an ...
Autori: Adrian Ciocănea, Andrei Dragomirescu, Sanda Budea
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25731

Abstract:Titanium metal and its alloys have been widely used as implants under load-bearing conditions due to their biocompatibility, excellent corrosion resistance and lightness, but their inability to bond to living bone is a setback. The experiments outlined here investigated hydroxyapatite (HA) coating on Ti metal implants, used to enhance their bioactive properties. In this study, specimens of commercially pure titanium (c.p. Ti) and Ti-6Al-4V were etched in either H3PO4 or HCl, and subsequ...
Autori: Chao-Lun Fu, Hsueh-Chuan Hsu, Shih-Ching Wu, Shih-Kuang Hsu, Wen-Fu Ho
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25795

Polycyclic aromatic hydrocarbons (PAHs) are by-products of petrol transformation; a report prepared by ICON, London, United Kingdom in 2001, showed that the principal sources of polycyclic aromatic hydrocarbons in wastewater are domestic usage, storm runoff and commercial effluent. This work presents the results on 14 commonly occurring and/or highly carcinogenic PAH compounds listed as priority pollutants by the United States Environmental Protection Agency and the European Union. Wastewater sa...
Autori: Dumitru Ristoiu, Edward Muntean, Livia Alhafez, Nicoleta Muntean, Radu Mihaiescu, Tania Mihaiescu
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25847

This paper presents a mathematical model for the prediction of pollutant transport in rivers. The model has been developed and calibrated using the Matlab software and relying on field data from Romanian Someş River (collected in case of accidental cyanide release). Field data has been used to estimate model parameters (e.g. dispersion coefficient, velocity) as variable in time and space in order account for river features non-uniformity in time and also in space. These initial parameter va...
Autori: Elisabeta-Cristina Ani, Vasile Mircea Cristea, Paul Serban Agachi
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25848

This paper presents the physicochemical and rheological properties of some complex coagulants derived from the weak and medium anionic polymers and medium cationic surfactant in order to evaluate the opportunity to use them in destabilizing and removing the colloidal systems from water and wastewater. In this respect, weak anionic and medium anionic copolymers of acrylamide and sodium acrylate with commercial names of Preastol 2515 and Preastol 2540, and a medium cationic surfactant derived from...
Autori: Constantin Bobirică, Gabriel Dabija, Liliana Bobirica, Mihaela Mihai
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25850

The synthesis of vanadium oxide systems (with 5 and 20 wt% V2O5 loadings) supported on commercial γ-alumina was carried out by a wet impregnation method. The samples were characterized by low-temperature nitrogen adsorption (BET), inductively coupled plasma (ICP) method and by in situ electrical conductance/capacitance measurements. The adsorption of CO was used to investigate the acidic properties of alumina support and V2O5/-Al2O3 catalysts by FTIR spectroscopy. The catalytic acti...
Autori: , Cristian Hornoiu, Mariana Scurtu, Monica Caldararu, Niculae I. Ionescu, Tatiana Yuzhakova, Veronica Bratan
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25869

Fluorescence spectroscopy is a promising approach to the characterization of natural aquatic components and organic pollutants, due to its rapid analysis and high sensitivity. Petroleum products had been studied, using fluorescence technique, in numerous occasions, as seawater and soil contaminant or as raw sample. Nevertheless, no complex assessment has been made on fluorescence real–time spectra of freshwater diesel oil contamination. This study reports a 5–days experiment on an urban rive...
Autori: Elfrida M. Carstea, Gabriela Pavelescu, Luminita Ghervase, Marina Tautan
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25882

An alternative preparation method for PAC (pre-hydrolyzed aluminium chloride with general formula Alm(OH)nCl3n-m) by electrochemical synthesis is presented in this paper. The electrochemically obtained PAC (E-PAC), in which the most effective species of the polymeric Al component were estimated by 27Al RMN method, with properties similar to the properties of a commercially available PAC solution, was successfully generated in a electrochemical reactor. For obtaining as much as Al13 polymer by el...
Autori: Adina Pacala, Ciprian Radovan, Ilie Vlaicu
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25901

AbstractThis paper presents the most recent developments regarding the square spiral inductors inductance evaluation. The study wasperformed in order to develop, implement and validate powerful software, CIBSOC able to determine the inductances of spiralinductors and also to optimize the spiral inductors layouts.We have studied the inductance variation of square spiral inductors. The four modules of the CIBSOC software were described,applied for the computation of inductance and the optimization...
Autori: Adina Racasan, Calin Munteanu, Claudia Hebedean, Claudia Pacurar, Vasile Topa
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=25997

AbstractThis paper describes an integrated system of wireless temporary pacemakers for remote monitoring of patients suffering fromcardiac arrhythmias, especially atrial fibrillation. The system is built around a low power cardiac pacemaker with wireless datatransmission capability, used for patient monitoring into a limited area. The proposed system is designed to be used in emergencysituations, in healthcare institutes, helping to keep the patient’s heartbeat stable. Each wireless pacemaker at...
Autori: Cristian Rotariu, Hariton Costin
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=26004

AbstractIn spite of the fact that concern on water quality protection raised in the last decades heavy metals pollution still represents agreat threat for both human health and environment quality. Ion exchange proved to be an effective technique for industrialwastewaters treatment, as long as it ensures an effective recovery of valuable compounds. The main purpose of this work is toassess the performances of a commercial ion resin sort (a strong basic anionic resin – VIONIT AT 21), to remove ch...
Autori: Alexandra Raluca Miron, Cristina Costache, Cristina Modrogan, Dumitru Giani Apostol, Oanamari Daniela Butucea, Redha Kouachi
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=26025

AbstractThe concept of firm reputation is tightly connected to the concept of corporate social responsibility and implicitly to that ofsustainable development. Reputation is the achieved result of the company out of factors such as economic viability, socialinvolvement and ecological health. The strength of a firm`s reputation is the ability to empower with core competences and usethem efficiently for both creating economic value and meeting the legal interests of the stakeholders. The main assu...
Autori: Manoela Popescu, Roxana Arabela Dumitraşcu, Vadim Dumitraşcu
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=26071

Mother Earth Investments AG, is actively working onthe development 2nd generation bioenergy feedstocks.In this book, Mr. Jansen generously shares hisknowledge in the field, in particular, regarding thechallenges and opportunities in development ofbiomass-derived fuels. This essential guide toinvesting in bioenergy commodities details secondgeneration biofuels from a scientific, technical andeconomic perspective, and discusses their globalenvironmental, political and financial impact.The book is ...
Autori: Roland A. Jansen
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=26100

Abstract Environmental degradation is today one of the great problems of mankind. Not only the need to exploit, but also the necessity to protect and preserve the natural environment have led to the adoption of specific rules for the prevention and remediation of environmental damages, according to EU standards. Taking into account that any human intervention on the natural and anthropogenic environment can lead to ecological risk diversification, occurrence of accidental pollut...
Autori: Aurica Grec
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=26130

Abstract Avocado post-harvest losses and cultivar-oriented trade are relevant issues in Cameroon that affect producers and retailers incomes. Identifying specific chemical characteristics of avocado oils would give an added value to underutilized species. Five avocado varieties, Booth 7, Booth 8, Collinson, Hickson and Lula, were subjected to aqueous extraction and the Attenuated Total Reflectance-Fourier Transformed Infrared spectrometry coupled with chemometrics (ATR-FTIR) profil...
Autori: Brice Ulrich Saha Foudjo
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=26143

AbstractEco-innovation, understood as innovation clearly focused toward sustainable development, is a key element in the articulation ofboth public policies and actions at the corporate level as it is a determining differentiating aspect. The objective of this work is toanalyze which variables determine that companies go one step further and consider the improvement of the environment as anobjective when developing innovative activities. We analyzed 7682 Spanish companies using data from the Spa...
Autori: Ángel Peiró-Signes
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=26187

AbstractSecondary aluminium production inherently generates significant amounts of slag of variate composition and including dangerous compounds. Consequently, a care treatment of the resulted slag is imperatively necessary for preventing the environment pollution and for recovering valuable materials even if present in low amounts. The aluminium recovering procedure is based on a chemical and hydrometallurgical slag treatment, leading to the technical grade aluminium sulphate (AS), possible to ...
Autori: Carmen Tociu, Cristina Maria, Elena Diacu
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=26295

AbstractIn the present study, batch adsorption experiments were performed for the removal of methylene blue (MB) dye from its aqueoussolution using newly prepared surface modified cashew nut shell (SMCNS) by varying the operating parameters like solution pH,adsorbent dose, initial dye concentration, contact time and temperature. The SMCNS has been prepared by treating the cashewnut shell with the sulphuric acid. Adsorption equilibrium data were analyzed by the model equations such as Langmuir,Fr...
Autori: Krishnan Gayathri Lashmi, Muthukumar Priyadharshini, Ponnusamy Senthil Kumar, Ramasundaram Vijayakumar Abhinaya, Subramanian Sivanesan, Vishwanathan Arthi
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=26309

AbstractIn this study artificial neural network (ANN) has been applied to predict noise pollution level in Chandigarh, a newly plannedcity of India. Factors that predominantly influence noise pollution level in a traffic noise model framework were classified intotwo categories: traffic volume and traffic speed. Volume, speed and noise level data of traffic were collected at nine identifiedlocations in the city. For development of ANN model, classified traffic volume (Car/Jeep/Van, Scooter/ Motor...
Autori: Kranti Kumar, Manoranjan Parida, Vinod Kumar Katiyar
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=26336

AbstractPipeline crack-like defects are detected and localized through the monitoring of the transport parameters of the transmissionnetwork. Under SCADA monitoring, accidental gas loss is reduced and the negative environmental impact of the hydrocarbons isavoided. This paper presents a method for the localization of accidental gas leaks, the pressure gradient method combined with afuzzy analysis method, which operates simultaneously both numerical data and lexical arguments in order to accurate...
Autori: Adrian Bucur
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=26418

AbstractAir quality in urban areas mostly depends on the type and size of industrial activities, traffic intensity, municipal and industrialwaste management. In addition to these factors, air quality in urban areas also depends on the size and quality of green areas,population density, geographic and climatic conditions. This paper reveals the correlations between air quality aspects in BacauCity, Romania (related to 2011) and the most representative climatic factors that influence the pollutant...
Autori: Doina Capsa
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=26424

AbstractThe rapid technical and economic development in the last few years has brought significant advantages to the human society, butit has also generated very serious threats, such as: pollution, technological accidents, and some other forms of environmentaldegradation. Human actions, either intentional or accidental, imposed by the economic and social development, have had, insome cases, a major impact on the environment, turning into potential hazards and causing environmental damage.This p...
Autori: Daniel-Cătălin Felegeanu
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=26426

AbstractThe aim of the current study is to analyse the effects of reusing the abrasive material, in different rates, on the quality of surfacesprocessed by abrasive water jet cutting (AWJ) and to correlate it with the environmental impact. In view of this, two aluminiumalloys are processed, Al 2024 T3 and Al 6065 T651, respectively, with large applicability in the aeronautic and machine buildingindustries. It was found that for reusing rates of the abrasive material higher than 60%, a better qua...
Autori: Carol Schnakovszky
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=26438

AbstractAmong foods that possess potent medicinal properties, Cucurbitaceae seeds stand as a promising source, since they are assumedto have a protective effect against oxidative stress. In order to analyze the antioxidant compounds of the seeds of Citrulluslanatus, Lagenaria siceraria, Telfaria occidentalis, Cucurbita maxima, Cucumis sativus, Cucumeropsis mannii, and Cucurbitamoschata, the dried seeds were extracted in MeOH-H2O (50 %; v/v) mixture at constant mixing rate. Qualitative phytochemi...
Autori: Aristide Guillaume Silapeux Kamda
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=26440

AbstractThe dynamic monitoring system continuously performs the monitoring of physicochemical quality indicators of water quality ininvestigated areas. In case of ecological risk due to accidental pollution situations, the system alarms in real time the decisionfactors for the diminution of the environmental impacts and other negative effects. The distributed networks of the system arecomposed of floatable structures of Buoys Monitoring (BM) type, autonomous and adaptable to the environmental co...
Autori: Constantin Vîlcu
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=26445

AbstractThe present study is an exploratory one representing the first endeavor to test the opinion of a small group of EnvironmentalEngineering students from the “Gheorghe Asachi” Technical University of Iaşi, Romania in terms of environmental issues. Thepurpose of the research presented in this paper is to determine the opinion of the students who are likely to become professionalsin the field of Environmental Engineering, on the consequences of the Roşia Montană - Gold Corporat...
Autori: Carmen Cătălina Ioan
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=26459

AbstractThe performance of some complex coagulants derived from weak and medium anionic polymers and medium cationic surfactantin coagulation-flocculation process for water treatment was experimentally investigated by carrying out kinetic studies and bydetermining the optimum coagulant dose. The complex coagulants were prepared from weak anionic and medium anioniccopolymers of acrylamide and sodium acrylate with the commercial names Praestol 2515 and Praestol 2540, and mediumcationic surfactant ...
Autori: Constantin Bobirică
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=26478

AbstractThe present work is dealing with the identification of the mercury sources and the quantification of the mercury level in air andurban dust in the industrial area of Iasi municipality. A correlation between some meteorological indicators, atmospheric mercurycontent and the urban dust from the investigated area was pointed out, based on the real time measurements as well as spatialdistribution of other heavy metals in urban dust.The measurements of mercury level in air were carried out at...
Autori: Oana Maria Tucaliuc
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=26479

AbstractAtomic absorption spectrophotometry (AAS) technique was applied in order to identify the occurrence of certain heavy metals insamples of pork products, such as bacon, ham, sausage and salami, taken from four commercial centers in Romania. Lead levelsin samples varied from 0.58 to 0.96 mg/kg, Cadmium values from 0.11 to 0.21 mg/ kg, Copper from 0.73 to 1.32 mg/kg, whileZinc levels were detected between 32.19 and 42.12 mg/kg. Lead, Copper and Zinc found in samples were lower than themaximu...
Autori: Gabriel Vasile Hoha
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=26522

AbstractDue to the continuously increasing trend in the costs of the traditional fossil fuels, the development of residential or commercialbuildings with reduced energy needs becomes a significant and more pressing scientific challenge. At the same time, consumersare increasingly demanding more comfortable buildings, where the energy needs are addressed using locally available renewableenergy resources. Consumers also require a higher level of security, supervision, and control of the building, ...
Autori: Géza Husi
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=26553

Abstract Activated carbon was prepared from renewable plant material, that is Euphorbia rigida, by chemical activation using zinc chloride as activating reagents. The adsorption of Basic Blue 9 (BB9) onto activated carbon was investigated in a batch system with respect to contact time, pH and temperature from aqueous solutions. The experimental data indicated that the adsorption isotherms are well described by the Langmuir isotherm model and the calculated maximum adsorption capacity of acti...
Autori: Özgül Gerçel
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=26627

Abstract The present work investigates the performance of Cristal-RightTM CR100 zeolite based on the equilibrium and thermodynamics water softening process. The commercial zeolite was characterized by scanning electron microscopy combined with energy dispersive X-ray spectroscopy and FT-IR spectroscopy. The equilibrium performances of zeolite were evaluated by the sorption capacity of calcium cations from calcium chloride solutions varying the calcium concentrations corresponding to moderate...
Autori: Liliana Lazăr
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=26670

Abstract The adaptation of commercially available ion-selective electrodes (ISEs) for use in wastewater matrices was demonstrated using multivariate analysis and optimization with the Microsoft Excel Solver tool. The electrodes were characterized in pure analyte solutions, and their parameters were estimated using multivariate analysis and Solver optimization. The ammonium, nitrate, and nitrite ions were measured in model systems that were designed to simulate wastewater. The accuracy of the...
Autori: Natalija Koprivanac
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=26687

Abstract Natural herbicides may be more sustainable than their chemical homologues, but they are still toxic substances that can affect humans and animals. Implementation of natural herbicides may require just as many safety precautions as the application of commercial herbicides, hence the need not to confuse the term "organic" with "non toxic". Allelopathy is accomplished through chemical inhibition of species towards each other, being an antagonistic phenomenon. Respon...
Autori: Ana Maria Vîrteiu
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=26752

Abstract The aim of this study is to analyse Romanian situation regarding packaging waste generated and to find out how the targets imposed after integration were accomplished, based on data collected and published by Eurostat, as well by other publications. The municipal solid waste collection practice in Romania is based on mixed collection (approximately 96% of waste generated), without or with minor sorting at source. Waste recovery is applied to small percentages and only for certain ca...
Autori: Carmen Luiza Costuleanu
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=26764

Abstract This paper presents a toolset for the efficient control of the indoor air quality and thermal comfort in retrofitted buildings. The refurbishment of existing buildings, compliant to actual regulations, often leads to airtightness and the consequent poor conditions for the occupants that could cause low productivity and even sickness. For this reason, the CETIEB (Cost Effective Tools for Better Indoor Environment in Retrofitted Energy Efficient Buildings) project developed innovative...
Autori: Gian Marco Revel
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=26770

Abstract Models are very important in the development of information systems for water management and they concern not only hydrology aspects, but also representations of complex software applications. Their conception requires big and orchestrated efforts of various stakeholders, like hydrologists, software and electrical engineers, emergency professionals, GIS specialists and ecologists. Water management blends multi-disciplinary aspects; therefore software analysis and design for this dom...
Autori: Anca Daniela Ionita
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=26829

Abstract An experimental study on the hydrodynamics of fixed, fluidized and spouted granular bed was performed. With this aim two commercial adsorbent materials and a composite material obtained by impregnation with a hygroscopic inorganic salt were employed. The fluid phase consisted in dry air. The obtained results highlight the influence of grain size, material density and roughness over pressure drop and gas velocity. Increasing grain size leads to decreasing pressure drop and increasing...
Autori: Ioan Solomon
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=26854

Abstract Accidental oil spills represent one of the environmental threats affecting the surface water in Romania, where their number has an increasing trend during the last decade, this type of events being registered mostly on the inner rivers, and not on the Black Sea. Because the inland rivers are used as drinking water sources for populated areas and raw water for industry, the response to accidental oil spills has to be rapid and tailored to their particular dynamic conditions. The cont...
Autori: Delia Popescu
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=26889

Abstract The CoCrMo alloys have been widely used in artificial knee or hip joints. It is well known that these materials have a good corrosion resistance and acceptable biocompatibility properties. Zirconia as a ceramic biomaterial facilitates the osteoconductivity and tissue osteogenetic capacity in new bone formation around implant. Linear polarization and electrochemical impedance spectroscopy (EIS) were employed to characterize the electrochemical behavior of plasma sprayed yttrium oxid...
Autori: Manuela Romaş
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=26896

Abstract The possibility to use release controlled fertilizers in the agriculture of the tropical countries is more important than in the agriculture of the countries of the cold regions. In this context, the purpose of this work is the characterization of an encapsulated commercial Fertilizer of Controlled Release named FERLENT®, which was covered with a polymeric material, obtained in situ, under controlled conditions, which allowed to corroborate the fairly well adjustment of the synt...
Autori: Mayra González Hurtado
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=26916

The coastal zone accommodates some of the most diverse ecosystems in the world and offers a wide range of ecosystem goods and services; therefore it has become a focal point of human development. Over the last five decades, starting from 1960s, Kuwait has seen a tremendous alteration in the natural coastal morphological landscape (CML) due to the tremendous increase on coastal population that existed 50 years ago to the present manmade environment today. Most of the population is located in ...
Autori: Saji Baby
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=26947

In the present study, the effects of two methods for thermal sanitization of soil, by oven and by autoclave, and two non-ionizing radiation sterilization methods, UVC and microwave on pH, conductivity, dry weight, total number of germs and respiration of samples from neutral commercial soil were evaluated, using international standard methods. Also, the infrared and UV-VIS spectroscopy were applied for the determination of chemical properties and structural characterization of humic acid and ...
Autori: Dumitra Raducanu
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=26985

In this study, it was aimed to determine the relationship between the temperature decrease of the air passing through the pad and flow rate of pad wetting water for pad evaporative cooling. In the experiments, a commercially available cellulose based evaporative cooling pad (CELdek®7060-15 pad) was used. Experiments were conducted at three different water flow rates (2 L min-1 m-2; 4 L min-1 m-2 and 6 L min-1 m-2) and two different air velocities (1.0 m sec-1 and 1.5 m sec-1). The tempera...
Autori: Cengiz Karaca
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=27006

Selenium (Se) is a mineral of fundamental importance for human health. Se status in general population is very important due to its remarkable benefits to the human body: antioxidant, hormonal regulator, anti-carcinogen. At the same time Se can be toxic leaving a narrow optimal range for optimal intake. Both excess and deficit are known to cause a wide range of clinical manifestations. Even though a large body of evidence provides vast information about Se, the exact molecular mechanisms of i...
Autori: Cristina Preda
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=27016

Production and utilization of engineered nanoparticles (ENPs), which are smart materials with ability of sensing and destroying chemical contaminants, is growing rapidly. However, these materials seem to have some ecological and health adverse effects. Hence, the main goal of this review study is to give a brief description about the recent developments of the commercial available engineered nano particles in the environmental remediation and also to note the current state of findings about t...
Autori: Mohammadreza Kamali
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=27017

Zirconia (ZrO2) as a ceramic biomaterial facilitates the osteoconductivity in new bone formation around implant. Surface characterization before and after electrochemical testing was performed used scanning electron microscopy (SEM). The electrochemical properties of the yttrium oxide stabilized zirconium oxide (YSZ) coated and uncoated MgCa sample with the open circuit potential at different immersion time in Ringer’s solution were studied by electrochemical impedance spectroscopy (EI...
Autori: Bogdan Istrate
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=27021

A biodegradable iron based alloy was obtained through classical melting method using a furnace with controlled atmosphere. The metallic material was obtained from high purity materials using a proper obtaining method. The material is proposed as an alternative to magnesium alloys that have a very fast degradation period for applications with longer healing periods (more than 3 and between 12 to 18 months). The material was analyzed using scanning electron microscopy (SEM) and X-ray dispersive...
Autori: Sergiu Stanciu
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=27023

Recently, environmental scientists have been focused their attention on the occurrence and the elimination of specific organic compounds in water. Among them, chlorophenols are considered to be a public health problem due to their carcinogenic properties. Thus, there is an important need to find new strategies to efficiently transform these compounds to no toxic or inactive by-products. In this work the photocatalytic removal of 2,4-dichlorophenol in water solution was investigated at laborat...
Autori: Lidia Favier
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=27034

The aim of this study is to investigate an innovative way to utilize the char obtained from tyres pyrolysis, in order to realize lightweight materials for building. Pyrolysis residue, mixed with three types of waste glass, has been used as raw material to obtain lightweight materials, exploiting its capability to behave as foaming agent. The results demonstrate that the pyrolysis char is a good foaming agent for the mixtures 50/50 with glassy sand and packaging glass waste, thermal treated at...
Autori: Fernanda Andreola
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=27119

This work focuses on treatment of lead polluted waste glass from urban collection (Pb≈5% wt) for its valorization as support in the immobilization of lipase, because soda-lime glasses are used in enzymatic catalysis. First of all, an extraction process of surface Pb was performed. The process is based on nitrilotriacetic acid (NTA) chelating agent. The operating conditions are: T=80°C, t=1h, pH 10, solid/liquid weight ratio=1/10, reagent concentration=0.1 M. Leaching tests at contr...
Autori: Luisa Barbieri
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=27122

The selection of proper compounds to include in perfumes’ formulation is of particular interest for the perfume industry. Essential oils and perfumes are subject to quality control as well as to chemical characterization; therefore, GC/MS-O methodology can be considered a useful tool for research purposes and/or for improving industrial manufacturing processes. In this study, GC/MS-O methodology was applied to a commercial brand perfume and a natural-derived one, both characterized by ...
Autori: Antonella Amenduni
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=27125

Greenhouse gas (GHG) emissions from vegetable land are of great concern because agricultural land is one of major sources contributing to global GHG emissions. In this study, the emission of GHG (methane, CH4; nitrous oxide, N2O; and ammonia, NH3), as well as the factors affecting GHG and NH3 emission were investigated in land planted with Lactuca sativa L. and treated with different animal manure composts in a greenhouse located in Beijing. Methane emission flux was significantly affected by so...
Autori: Zhen Ge
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=27153

The need for ensuring safety of energy supply, as well as the tendency to reduce greenhouse gas emissions has led to greater use of energy efficient technologies and renewable energy sources. Cogeneration (combined production of heat and electricity) is one of high-efficiency technologies, because the losses of primary energy are less than losses from the separate generation of heat and power. Consequently, in 27 EU member-states 70% of the district heating is based on cogeneration plants. Us...
Autori: Vladimir Vukašinović
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=27177

The adsorbent gels utilized in this research project were synthesized from non-commercially available chitosan, obtained by deacetylation of chitin, which was isolated from fermented shrimp waste by a major local industrial food biopolymer. Chitosan-based adsorbent gels were used for the removal of a tris-azo dye (Direct Blue 71) from aqueous solutions. Sorption experiments focused on the chemical modification of chitosan using two cross-linking agents, sodium tripolyphosphate (TPP) and glutaral...
Autori: Reyna G. Sánchez-Duarte
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=27184

Catalysts based on nanocrystalline Mg-Zn ferrites supported on commercial alumina were prepared by in situ sol-gel auto-combustion technique. The as-obtained materials were characterized using Fourier Transform Infrared Spectroscopy (FT-IR), X-ray diffraction (XRD), atomic force microscopy (AFM) and Brunauer-Emmett-Teller (BET) specific surface area measurement. These materials were tested as catalysts for hydrogen peroxide decomposition and phenol oxidation reactions. The catalytic activity of ...
Autori: Tamara Slatineanu
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=27192

This research offers a novel approach for potato wastewater (PW) bioconversion to alcohol by microwaves gelatinization, liquefaction and simultaneous saccharification and fermentation (SSF). Concentrated PW from potato processing to obtain fries was treated by gelatinization, enzymatic hydrolysis through liquefaction and saccharification, and fermentation; a mini-bioreactor was used, with low oxygen, temperature, pH and mixing control. The yeast Saccharomyces cerevisiae and a commercial mix of l...
Autori: Maria Iasmina Moza
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=27275

This paper presents the results of a scientific study on industrial emissions based on requirements of the European Directive 2010/75/EU and Law 278/2013 referring to the minimization of greenhouse gas emissions into the environment. In this context, our study was focused on the decrease (in terms of environmental protection) of gas emissions generated by an installation for thermal desorption belonging to a commercial agent by adjusting its tunings after performing emission measurements. The in...
Autori: Angelica Călămar
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=27287

Researches and analysis of heavy metals concentrations in the fish species exploited as a food source are of great interest due to long term toxic effects on human health even at very low concentrations. Therefore, we have conducted this study in an area of great interest in terms of aquatic biodiversity, but also of tourism and trade. Depending on the degree of toxicity in delta aquatic ichtyofauna, five heavy metals (Cr, Cu, Hg, Ni, Pb) and a metalloid (As) concentrations were measured in the ...
Autori: Adrian Burada
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=27293

In the current context of industrialization, chemical and radioactive pollution is a concern for environmental protection and interference with human health. Care for environmental protection also includes vegetation that grows spontaneously in potentially contaminated places, thus avoiding illness among the population if consumed. The study area is located at 4.5km SSE from downtown Bacău City, Romania and is the result of the manufacture of H3PO4 through the wet method. In this study, t...
Autori: Mioara Săndulache Rachieru
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=27331

The global renewable energy share should reach and exceed 30% by 2030. Mini-scale hydropower installations are environmentally-friendly technologies, unlike large hydroelectric power plants that have certain drawbacks from the environmental point of view. A safe and clean solution is the cross-flow turbine, but the commercial types require a minimum head, usually captured by additional hydro-technical works that can also damage the environment. In this context, a very good solution could be a lo...
Autori: Daniela Popescu
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=27343

Acetone-Butanol-Ethanol (ABE) industrial production by fermentation is strongly affected by the low concentration of solvent (<25 g/L) that affects the cost of the recovery process. To decrease the overall cost of the butanol production, alternative routes for the recovery have proposed in literature. This paper presents a techno-economic analysis of an innovative butanol recovery process from ABE fermentation broth based on gas stripping technique. The comparison with a recovery process bas...
Autori: Lucia Salemme
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=27346

This paper aims to study the behavior of air-gas explosion systems, in terms of propagation speed of pressure wave and flame front, based on experimental measurements in a shock tube, in order to prevent accidental pollution with the combustion gases. The characteristic parameters of the explosion process determined using the shock tube, the velocity of propagation of the flame front, the speed of propagation of the wave of pressure, explosion pressure at various distances from the source of in...
Autori: Emilian Ghicioi
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=27355

The utilization of agro-industrial waste as a potential substrate for producing enzymes may serve a dual purpose of reducing the environmental pollution along with producing a high value commercial product. Twelve different agro-industrial wastes were evaluated for extracellular BGL (β-glucosidase) production by a mutant of Bacillus subtilis on solid state fermentations (SSF). The Citrus sinensis bagasse was found to be the most suitable substrate with highest BGL titer (35 U/gds). Optimum ...
Autori: Ruchi Agrawal
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=27378

This study presents mercury (Hg) assessment in water from tailing dumps collected form NW Romania by using commercial Diffusive Gradients in Thin-films (DGT) devices and Thermal Desorption - Atomic Absorption Spectrometry method (TD-AAS) technique. Additional aim of this study is to present Hg method validation and measurement uncertainty estimation for selected samples. An atomic absorption spectrometer based on thermal desorption for mercury vapor generation and DGT devices specific for Hg (c...
Autori: Marin Senila
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=27383

The present study deals with the production of biogas from post-harvest wastes of pineapple such as peels, leaves, mixture of peels and leaves with the two different types of inoculum viz., Cow Manure (CM) and Novel microbial Consortia (NC). The results between the two types of inoculum were compared to find out their efficiency. Among the different substrate-inoculum combinations, the biogas production potential was evaluated which resulted that NC was more efficient compared to CM. All assays ...
Autori: Mukesh Kumar
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=27496

The use of activated carbon as filter media for water has gained research attractions over the years. A comparison study of granular activated carbon (GAC) of extracted palm fruit fibres (EPF), palm kernel shell (PKS) with existing filter material (EFM) commercially produced activated carbon for water filtration has been conducted. Palm kernel shells and extracted palm fruit fibres from palm oil mill wastes were processed to form activated carbon by chemical activation process. Scanning Elect...
Autori: Jamaliah Idris
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=27498

This work evaluates the effect of 5 mixtures of water treatment sludge, soil from the Cerrado region (Brazil) and a commercial substrate on the growth of 4 species of native plants (Copaifera langsdorffii, Astronium fraxinifolium, Peltophorum dubium and Tabebuia roseo-alba) from the Brazilian Cerrado. A randomized design was setup with four repetitions and WTS loading rates of 0, 204, 417, 638 and 869 g/kg. Plant sampling for analysis was performed at 30, 60, 90, 120 and 150 days after planting,...
Autori: Paulo Scalize
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=27593

β-glucosidases are very important in the improvement of cellulose degradation rates by diminishing the inhibition of end products. Although, cellulase cost has reduced significantly in last decade but still the high costs of biomass saccharification is one of the main challenges for the commercialization of ethanol from LC biomass. In this work, β-glucosidase immobilization in calcium alginate was optimized using response surface methodology. 89% immobilization efficiency was achieved ...
Autori: Ruchi Agrawal
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=27614

The separate and simultaneous photocatalytic reduction of poisonous Cr(VI) and Ni(II) ions were examined with trace amounts of commercial titania nanoparticles (up to 50 mg/L). A direct irradiation photo-reactor, equipped with ultrasonic source was employed. The effects of four influencing parameters, catalyst dosage, pH, temperature and metal ions concentration ratio were investigated. The simultaneous operations, in the ternary Cr(VI)/Ni(II)/TiO2 system, show a synergism in reduction effici...
Autori: Javad Saien
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=27662

Several studies have been conducted in various fields comparing Mamdani and Sugeno fuzzy inference systems (FISs). This study contributes to the literature by comparing the performance of Mamdani and Sugeno hierarchical fuzzy systems (HFSs) in terms of their technical performance within the context of environmental impact assessment (EIA), a multi-criteria decision analysis (MCDA) method, with the aim of illuminating practical issues that need to be taken into account during application. The con...
Autori:
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=27681

Bottled water (commonly called mineral) makes an important source of minerals for humans. Its consumption has been systematically rising in the highly industrialized countries, even though not every water type has appropriate health properties. As a result, drinking bottled water ought to be supported with understanding its qualities and physicochemical content. The following article presents the results of the research into pH levels, electrical conductivity, selected inorganic anions (F-, Cl-...
Autori: Rajmund Michalski
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=27693

Large amounts of spent coffee grounds (SCG) are currently available all over the world due to the enormous increase in coffee consumption. This increase has in turn to be related to the even greater diffusion of coffee vending machines. The aim of this study was to evaluate the biomethanation potential (BMP) of SCG alone or in co-digestion with pig slurry (PS). Pig slurry was chosen because it is frequently utilized as feedstock for biogas production from agricultural waste. The raw material was...
Autori: Ciro Vasmara
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=27794

According to recent estimations, the total yearly amount of end-of-life tyres (ELTs) arising in Europe exceeds 3 million tons; more than 95% are managed through mechanical and thermal treatments because ELTs represent a useful resource both of materials and energy. For this purpose, the goal of the present work is the assessment of the environmental impacts of a novel pyrolysis process and the comparison with alternative ELTs valorisation or disposal scenarios. Life Cycle Analysis (LCA) methodol...
Autori: Esmeralda Neri
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=27798

The aim of this study was to produce high quality activated carbons from Diplotaxis harra biomass by potassium hydroxide activation and their application in heavy metals removal. To reduce the number of experiments, full factorial experimental design at two levels (24) was carried out to occur optimal preparation conditions for efficient removal of cadmium and cobalt ions from aqueous solutions. Different variables influencing activation process, such as carbonization temperature (500–6...
Autori: Hanane Tounsadi
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=27934

The current paper is an overview on previous and ongoing research carried out by the authors concerning the use of Computational Fluid Dynamics for the accurate classification of hazardous Ex areas generated by flammable gases, for the optimization of computational simulation of air-methane mixture explosions by using ANSYS CFX and FLUENT and for calibrating computational simulations of gas explosions using the Schlieren effect. These research works containing analytic studies have led to the...
Autori: Vlad Mihai Păsculescu
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=27962

Fire and explosion prevention requires the knowledge of the explosive or flammability parameters of combustible gases and vapours that can be found in industrial and civil environments, as well as the influence of certain substances in the process on these parameters. In some cases, pyrophoric sulphides can be formed and it is supposed that they may influence the known flammability parameters of the substances used in various industrial processes. In order to track the influence of iron sulp...
Autori: Maria Prodan
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=27963

Watercourses that transit rural / urban areas are susceptible to the phenomenon of aquatic pollution due to various types of polluting species. The important issues of river pollution and of polluting species dispersion, require an approach with predictive tools (models for transport of polluting species) which can evaluate the performance of depollution measures/actions to reduce pollution and to take optimal management decisions. Thus, from January 2017 to May 2017, a monitoring investigati...
Autori: Lorand Toth
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=27967

Inorganic thermal insulators are commonly used to improve energy efficiency. However, environmental and health aspects of their production until the end of life have been increasingly concerned. Agricultural wastes including rice straw, rice husk and corn cobs are abundant in Thailand and converted into value-added products such as thermal insulation materials offers a viable recycling opportunity as the ecological burden of a product has now become a widely-discussed issue. In this paper, gl...
Autori: Phairat Usubharatana
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=28033

In Spain, most substrates used in the production of plants in containers, are composed of peat in combination with other components such as pine bark, perlite or vermiculite. In order to find alternatives to the use of peat, shredded switchgrass (Panicum virgatum L.) biomass was evaluated as a component of the substrates. Five substrates were prepared with the following proportions, by volume, of commercial substrates:switchgrass: 100/0, 75/25, 50/50, 25/75 and 0/100. Pots were filled with the ...
Autori: Jose Alberto Oliveira Prendes
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=28134

The performance, in terms of sorption properties, of the two natural sorbents were compared with the commercial synthetic sorbent Fibroil. The experiments were conducted using two continuous setups of filtration under dynamic conditions. Experimental results revealed that the removal of chemical oxygen demand (COD) was 89%, 87% and 37% for Fibroil, Schoenoplectus lacustris and Acorus calamus respectively in a down-flow filtration, while with the up-flow filtration the removal efficacy of COD wa...
Autori: Zineb Chaouki
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=28141

This study aims to evaluate the properties of different wastes obtained from four red ceramic brick industries in the northern region of Santa Catarina, Brazil. The characterization of the clay brick waste (CBW) was performed using the XRD techniques, XRF, FTIR, DTA and SEM. Techniques to determine the pozzolanic activity, particle size, B.E.T. surface area and specific mass were used. The consumption of calcium hydroxide (CH) in the cementitious pastes with the CBWs was also measured. An app...
Autori: Adilson Schackow
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=28184

Traditional winemaking for subsistence is at the heart of rural households in traditional cultural landscapes where the bioclimatic conditions allow wine production. As these wines are typically not assessed for their elemental content, their consumers could be exposed to various contaminants. Our goals were the followings: (i) to understand the elemental composition of non-commercial traditional wines from three cultural regions of Eastern Europe (Romania) and (ii) to find the main chemical fac...
Autori: Xintia Odett Dembroszky
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=28189

The films and the developing solutions used with radiological films contain a number of harmful substances that are very toxic to the environment, as well as to the living organisms, particularly aquatic organisms. Therefore, this type of toxic waste requires simple, but adequate collection and treatment measures, in order to be transformed into environmentally friendly products. This paper reviews the existent knowledge and the methods for the management of this special waste in dentistry-rela...
Autori: Mariana Constantiniuc
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=28201

Brominated flame retardants (BFRs) are used in different types of products such as plastic, textiles and electronic circuits with the aim to increase fire resistance and to avoid or to delay the propagation of accidental combustion. However, high concentrations of bromine in waste from electrical and electronic equipment (WEEE) hinder the possibility of their use as secondary raw materials. Furthermore, the possibility that BFRs can be released during mechanical recycling processes, imposes the...
Autori: Giuseppe Bonifazi
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=28296

Fish meal processing industries convert the raw fish into a various commercially edible form. The effluent generated from this industry comprises a large amount of pollutants leading to high values of biochemical oxygen demand (BOD), chemical oxygen demand (COD) and total suspended solids (TSS). Mostly traditional biological and chemical methods have been adopted to treat the effluent coming out of the fish meal industry. By using these traditional methods at the end of the process, a large amo...
Autori: Rajagopalan Varadarajan
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=28335

Optimal evacuation routes are crucial to protect workers’ safety when accidental leakage of toxic gas occurs in chemical plants. However, the majority of route optimization focuses on the transport field and few on the evacuation routing optimization in chemical plants. This paper proposes a dynamic evacuation routing optimization method for chemical plants under toxic gas release scenarios. From the complete accident scenario set (CASS) built with wind fields and leakage sources, the leak...
Autori: Ying Liu
ISSN: 1843 - 3707
http://www.ecozone.ro/reviste.php?RID=28336