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Rezultatele pentru magneticRezultate gasite: 80
Environmental Engineering and Management Journal, Vol. 3 Nr. 4
Environmental Engineering and Management Journal › Vol. 3 › Nr. 4 Contain all the articles from this issueICEEM /02 PLENARY SESSION:"Environmental Engineering and Management in the Context of Sustainable Development"Design for sustainability (D4S): towards advanced product conceptsHan Brezet, Sacha SilvesterICEEM/02 - ENVIRONMENTAL ENGINEERING SECTION"Water and Wastewater Treatment Technologies"Complex approach to the problem of persistent organic pollutants degradation in water environmentVictor Covaliov, Olga Covaliova, Angela Cincilei, Gilles Mailhot, Pasca... Autori: ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25176
Pulsed high voltage discharge technology as a new method for killing Hepatitis C virus (HCV) cells
Environmental Engineering and Management Journal › Vol. 8 › Nr. 1 AbstractPulsed high voltage discharge technology is a newly developed method for knock out viruses in blood with various electrohydraulic discharge reactors. The aim of this study is to investigate the effect of an electrohydraulic discharge treatment system on Hepatitis C virus (HCV) behaviour. The electrohydraulic discharge (EHD) reactor consist of high voltage point discharge electrode above blood surface and cylindrical ground copper electrode containing the blood (in the same time act as th... Autori: Gamal M. El-Aragi ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25362
Environmental Engineering and Management Journal, Vol. 8 Nr. 2
Environmental Engineering and Management Journal › Vol. 8 › Nr. 2 Include urmatoarele articole:â€? Environmental Engineering and Management Journal, Vol. 8 Nr. 2â€? Bioengineering aspects of tissues culture bioreactors for medicine and environmental applicationsâ€? Removal of bis (1-chloro-2-propyl) ether from wastewater using sonodegradation and biodegradationâ€? A novel plasma reactor for toluene decomposition in contaminated air flowâ€? Study of the copper (II) removal from aqueous solutions by chelating resin Purolite S930 â€? Analysis of some metal levels... Autori: ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25371
Environmental Engineering and Management Journal, Vol. 8 Nr. 4
Environmental Engineering and Management Journal › Vol. 8 › Nr. 4 â€? Photocatalytic properties of titania - fly ash thin filmsâ€? Study of the viscosity of some biodiesel – diesel oil blendsâ€? Aspects refering to technical and leaching properties of the secondary aluminium slags - cement compositesâ€? Studies regarding phenol and 4-chlorophenol sorption by surfactant modified zeolitesâ€? Cu-Ni nanostructured electrocatalysts obtained by electrocodepositionâ€? Molecularly imprinted poly (vinyl alcohol) films for the selective absorption of glycyrrhizinic ac... Autori: http://www.ecozone.ro/reviste.php?RID=25373
Environmental Engineering and Management Journal, Vol. 8 Nr. 5
Environmental Engineering and Management Journal › Vol. 8 › Nr. 5 â€? Photocatalytic properties of titania - fly ash thin filmsâ€? Study of the viscosity of some biodiesel – diesel oil blendsâ€? Aspects refering to technical and leaching properties of the secondary aluminium slags - cement compositesâ€? Studies regarding phenol and 4-chlorophenol sorption by surfactant modified zeolitesâ€? Cu-Ni nanostructured electrocatalysts obtained by electrocodepositionâ€? Molecularly imprinted poly (vinyl alcohol) films for the selective absorption of glycyrrhizinic ac... Autori: http://www.ecozone.ro/reviste.php?RID=25374
Survey of electromagnetic environment due to mobile communications
Environmental Engineering and Management Journal › Vol. 8 › Nr. 2 AbstractThis paper presents an analysis of the levels of electromagnetic fields caused by cellular base stations or mobile phones, measured in some residential areas. A statistical processing of the data has also been done in order to estimate both the short-term and the long-term variability of the fields caused by cellular base stations in some apartments and on the terraces of the apartment buildings at tens or hundreds of meters distance from the antenna systems. In some places, comparative ... Autori: Alexandru Salceanu, Ionut Nica, Valeriu David ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25381
Magnetic density separation of diamonds from gangue
Environmental Engineering and Management Journal › Vol. 8 › Nr. 4 Abstract
In view of the predicted diamond shortage in 2010, a number of innovative processes have been proposed recovering ... Autori: Frederike Weijmans, Erwin Bakker, Peter Rem ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25441
Recycling of mixed polyolefin wastes
Environmental Engineering and Management Journal › Vol. 8 › Nr. 4 Abstract
The mass of usage of secondary plastics are mostly determined by their quality and price. Therefore it was essentially to collect and evaluate the related aspects and expectations from the potential secondary-plastics users. To enable this in the frame of the W2Plastics EU7 project (Magnetic Sorting and Ultrasound Sensor Technologies for Production of High Purity Secondary Polyolefins from Waste) an adequate questionnaire was worked and sent out to automotive plastics end-product man... Autori: Andrea Toldy, Brigitta Bodzay, Mircea Tierean ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25443
High-purity products from plastic waste: The w2plastics project
Environmental Engineering and Management Journal › Vol. 8 › Nr. 4 Abstract
The European annual consumption of plastic materials has increased from 24.6 Mtons in 1993 to 39.7 M tons in 2003 and it is likely to keep growing. Europe is faced with the challenge of managing millions of tons of waste plastics. At the same time, polymer recyclers and manufacturing industries do not find enough secondary polymers of consistent quality. Plastics production and use has a range of environmental impacts because of the considerable quantity of resources needed as raw ma... Autori: Peter Rem, Venga Solaria, Francesco Di Maio ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25444
Iron oxides from electrofilter ash for water treatment (arsenic removal)
Environmental Engineering and Management Journal › Vol. 8 › Nr. 4 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
Monitoring of environmental low frequency magnetic fields
Environmental Engineering and Management Journal › Vol. 8 › Nr. 5 AbstractWith a view to make a long term survey of the magnetic fields generated by the power line sources, appliances or, generally, by the low frequency magnetic field sources, a tri-axis magnetic field meter was proposed. Referring to the magnetic field sensor, both the characteristic proportional of the field strength and proportional to the time derivate of the field strength were considered. Thus, two active magnetic field meters working in 40 Hz ? 200 kHz frequency range were designed. In ... Autori: Alexandru Salceanu, Ionut Nica, Liviu Breniuc, Valeriu David ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25507
A new real-time monitoring technique of the biochemical constituents of the environment
Environmental Engineering and Management Journal › Vol. 9 › Nr. 1 Abstract
As a result of the global climatic changes generated by the alteration of the environment through polution, the ecosystems' natural ressources are incontrollably distributed, generating unforseeable effects at the level of the subsequent evolution of the natural balance factors. One of the greatest challenges of the science concerned with environment protection, is that of real time monitoring of the biochemical constitution. The real time monitoring of a great number of biochemical ... Autori: Andrada Pretorian, Bojin Dionezie, Gabriel Epure, Ion Savu, Lucia Mutihac, Mihaela Muresan, Nicoleta Petrea, Petrisor Zamora Iordache, Razvan Petre, Rodica Lungu, Vasile Somoghi ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25583
Environmental Engineering and Management Journal, Vol. 9 Nr. 5
Environmental Engineering and Management Journal › Vol. 9 › Nr. 5 ? SUSTAINABLE CONCRETE HARDENING PROCESSES IN NORMAL CLIMATIC AND THERMAL TREATMENT CONDITIONS
? THE ENVIRONMENTAL DIMENSION ? AN INTERDISCIPLINARY RESEARCH AREA
? MENU PLANNING STRATEGY BASED ON ECOLOGICAL FOOTPRINT
? EVALUATING ENVIRONMENTAL IMPACT OF NIGERIAN COMPOSTED WASTES USING LABORATORY EXTRACTION TEST
? IN SITU RADIOFREQUENCY FIELD LEVEL ASSESSMENT IN TWO URBAN AREAS IN ROMANIA: OPEN QUESTIONS TO ELECTROMAGNETIC POLLUTION
? INNOVATIVE SOLUTION FOR WARNING ON HI... Autori: ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25657
Environmental Engineering and Management Journal, Vol. 9 Nr. 11
Environmental Engineering and Management Journal › Vol. 9 › Nr. 11 ? 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
Environmental Engineering and Management Journal, Vol. 10 Nr. 4
Environmental Engineering and Management Journal › Vol. 10 › Nr. 4 ? EFFECT OF ELECTRICAL CURRENT ON H2/ H2O2 GENERATION IN NON-THERMAL PLASMA GLIDING ARC REACTORS
? ADVANCES IN THE VISUALIZATION OF THREE-DIMENSIONAL SEISMIC VOLUME DATA
? CHARACTERIZATION OF ELECTROMAGNETIC RADIATION FROM A PATIENT MONITOR
? METHODS OF ELECTROMAGNETIC INTERFERENCE REDUCTION IN ELECTROCARDIOGRAPHIC SIGNAL ACQUISITION
? SPHERICAL MODEL OF THE HUMAN HEAD EXPOSED TO ELECTROMAGNETIC FIELD
? BRAIN ELECTRICAL ACTIVITY RECORDING IN SOME ELECTROMAGNETIC ENVIRONM... Autori: ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25667
AN APPRAISAL OF TWO TRACER METHODS FOR ESTIMATING TILLAGE EROSION RATES UNDER HOEING TILLAGE
Environmental Engineering and Management Journal › Vol. 10 › Nr. 6 An increasing recognition of tillage erosion processes has shown that soil redistribution by tillage directly contributes to soil loss in mechanically and nonmechanically agricultural areas worldwide. Soil translocation by tillage is normally measured by means of tracers, with which a volume of soil is labeled, and therefore yielding tillage erosion rates in a field. Two tracer methods for estimating tillage erosion rates were appraised to understand the adaptability to local conditions in the h... Autori: Jianhui Zhang, Fucheng Lihttp://www.ecozone.ro/reviste.php?RID=25687
THE BEHAVIOR OF THE FERROUS MATERIALS MAGNETIZED IN EXTREME CONDITIONS CAUSING ELECTROMAGNETIC INTERFERENCE
Environmental Engineering and Management Journal › Vol. 11 › Nr. 2 The paper proposes a method and a technology that allows the generation of a very high intensity magnetic field, at a high pressure and within an extremely short period of time into a ferrous material, in order to study the behavior of such material from the magnetic and structural perspective. The method consists in producing the â€?compressionâ€? of an initial magnetic flux that is generated in a coil that has inside a ferrous material cylinder (the armature), subject to testing, done by a con... Autori: Nicolae Badara, Octavian Tarabuta, Vasile Dobref ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25887
STRUCTURAL EVOLUTION OF HEAT-TREATED COLLOIDAL PYRITE UNDER INERT ATMOSPHERE AND ITS APPLICATION FOR THE REMOVAL OF Cu(II) ION FROM WASTEWATER
Environmental Engineering and Management Journal › Vol. 12 › Nr. 7 AbstractIn this paper, we report a study on structural evolution, magnetic susceptibility and arsenic content of colloidal pyrite fromXinqiao deposits in Tongling, Anhui Province, China. The pyrite was treated under N2 atmosphere and charaterized with X-raypowder diffraction (XRD), field emission scanning electron microscopy (FE-SEM), magnetic susceptibility analysis, and atomicfluorescence spectroscopy (AFS). We observed that heating of colloidal pyrite in N2 atomosphere did not change the crys... Autori: Dong Chen, Ping Li, Tianhu Chen, Xiao Zhu, Yadan Shi, Yan Yang ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25951
FUNCTIONALIZATION AND IMMOBILIZATION OF WHOLE CELL BIOREPORTERS FOR THE DETECTION OF ENVIRONMENTAL CONTAMINATION
Environmental Engineering and Management Journal › Vol. 12 › Nr. 7 AbstractThe detection of environmental pollutants has challenged conventional chemical analysis for the rapid estimation of thebioavailability and toxicity of the contamination impact on human health and ecosystems. Magnetic nanoparticles (MNPs)functionalization as bioreporters can enhance the ability for biosensing in complex contaminated samples such as soils, and theimmobilization of bioreporters will promote the detection of gas and online monitoring. In this study, Acinetobacter baylyi ADP1... Autori: Aizhong Ding, Cheng Chen, Dayi Zhang, Musen Duan, Steven F. Thornton, Wei E. Huang, Yanjun Luo ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25952
EDITORIAL - A SPECIAL ISSUE DEDICATED TO - ENVIRONMENTAL CONCERNS ON ELECTROMAGNETIC COMPATIBILITY AND ENGINEERING IN MEDICINE AND BIOLOGY
Environmental Engineering and Management Journal › Vol. 12 › Nr. 6 This special issue of EnvironmentalEngineering and Management Journal is dedicated tointerdisciplinary research and discusses multipleresults addressing environmental issues inElectromagnetic Compatibility (EMC) andEngineering in Medicine and Biology (EMB) areas.Some of the most significant researchdirections considered in this issue entail theelectromagnetic pollution together with a survey ofelectromagnetic environment in order to analyze andquantify the biological and health effects ofelectro... Autori: ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25990
MODELING DEVICES SENSITIVITY ASSOCIATED TO THE SUSCEPTIBILITY OF ESD PHENOMENA
Environmental Engineering and Management Journal › Vol. 12 › Nr. 6 AbstractThe electrostatic discharge (ESD) event is a severe source of interference that can produce damages in any electronic system. Afull-body of an ESD generator is modeled using the Cadence IC 5.3 package software in order to reproduce the referencedischarge current assured by the standard specifications. The factors that introduce electromagnetic radiations into the systemshave also been investigated. Several tests based on proper matches between the parameters of the antenna were computed ... Autori: Alexandru Salceanu, Ana-Maria Nicuta, Oana Beniuga, Paul Bicleanu ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25993
MITIGATION OF POWER FREQUENCY MAGNETIC FIELD NEARBY POWER LINES USING RECTANGULAR FRAMES
Environmental Engineering and Management Journal › Vol. 12 › Nr. 6 AbstractThe paper outlines a technique to mitigate the power frequency magnetic field produced in its vicinity by the transport anddistribution power lines. The technique consists in introduction below the line conductors of a passive loop of rectangular shape.Due to the induced currents in the rectangular frame, the total magnetic field below this structure is significantly reduced. Themethod’s efficiency depends by the line conductor’s configuration and also by the dimensions of the frame. The... Autori: Călin Munteanu, Emil Merdan, Ioan T. Pop, Sorin Deleanu, Vasile Topa ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25994
COMPARATIVE ANALYSIS OF THE EXTREMELY LOW-FREQUENCY MAGNETIC FIELD EXPOSURE FROM OVERHEAD POWER LINES
Environmental Engineering and Management Journal › Vol. 12 › Nr. 6 AbstractThe aim of this study is to carry out a theoretical investigation of the extremely low-frequency (ELF) magnetic fields produced bytypical configurations of overhead power lines of the Romanian power grid. The computation of the magnetic flux density isachieved by the following two approaches: i) using an interactive LabVIEW program developed on fundamental formulas and ii)by numerical modeling with FEMM 4.2, a software package based on the finite-element method. Analytical results are th... Autori: Alexandru Salceanu, Eduard Lunca, Marcel Istrate ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25995
APPLICATION OF WINDINGS SHIFTING FOR THE OPTIMIZATION OF PLANAR STRUCTURES
Environmental Engineering and Management Journal › Vol. 12 › Nr. 6 AbstractThe use of planar electromagnetic technology led to the improvement of high frequency characteristics of the structures and thedecrease of their size and profile, which made them easier to integrate in different devices. In order to improve these planarstructures, it is known that the parasitic capacitance (EPC) must be decreased. Another method to achieve a better functionality isto increase or decrease the high frequency losses, according to their use. Because the previous studies were... Autori: Adina Racasan, Calin Munteanu, Claudia Hebedean, Claudia Pacurar ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25996
FLOW PATTERNS IN THE MAGNETIC NANOFLUID CORE OF A MINIATURE PLANAR SPIRAL TRANSFORMER
Environmental Engineering and Management Journal › Vol. 12 › Nr. 6 AbstractThis paper analyses mathematical models and numerical simulation results for a notional miniature, planar, spiral transformer(MPST) fabricated in MEMS technology, for galvanic separation, proposed to equip an electric harvesting device (EHD). Twotypes of core – ferrite and (partially) magnetic nanofluid – are considered. We found that magnetization body forces occur in thesuper-paramagnetic nanofluid core and they result in complex, steady state flows consisting of fully 3D recirculation... Autori: Alexandru Mihail Morega, Jean Bogdan Dumitru, Lucian Pîslaru-Dănescu, Mihaela Morega ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25998
IMPLEMENTING EUROPEAN METHODOLOGIES TO ASSESS ENVIRONMENTAL ELECTROMAGNETIC FIELD LEVELS: SOME DIFFICULTIES AND SOLUTIONS
Environmental Engineering and Management Journal › Vol. 12 › Nr. 6 AbstractDuring the last decade, European methodologies on electromagnetic field measurement and human exposure assessment havebeen extensively developed and improved. At present, there is a large number of complex technical standards dedicated to variousexposure situations. The implementation of the new methodology in the national practice might be difficult, expensive and timeconsuming. Taking into account the methodological change, we analyzed some practical difficulties that might occur and w... Autori: Cristian Goiceanu, Eugenia Dănulescu, Răzvan Dănulescu, Raluca Dănulescu ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25999
ANALYSIS OF MAGNETIC GRADIENT SIGNAL IN UNSHIELDED ELECTROMAGNETIC ENVIRONMENT
Environmental Engineering and Management Journal › Vol. 12 › Nr. 6 AbstractThe paper analyses the spatial distribution of the magnetic field and the first and second order gradients produced by two sources,a disturbances source and a biosignal source, as well as the effect of the gradiometer basis on gradient measurement. Thecontribution of a magnetic disturbance to signal/disturbance ratio is analyzed when the biomagnetic field is measured in anelectromagnetic unshielded environment.... Autori: Miuta Carmina Rau, Octavian Baltag ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=26000
REDUCTION OF POWER LINE INTERFERENCES FROM ELECTROCARDIOGRAPHIC SIGNALS BY APPLYING ADAPTIVE FILTERING ON FIELD PROGRAMMABLE GATE ARRAY CIRCUITS
Environmental Engineering and Management Journal › Vol. 12 › Nr. 6 AbstractThe paper presents an extended implementation of an adaptive filter structure for electrocardiographic (ECG) signals denoisingwhich is implemented on Field Programmable Gate Array (FPGA) circuit. The proposed FPGA adaptive filter structure can beused to clean in real-time the ECG signals from power line interferences. In order to update the adaptive filter weights, the LeastMean Square (LMS) algorithm is used. The discrete forms of the filter structure and adaptive algorithm are presente... Autori: Cristian Győző Haba, Ioan Tudosa, Narcis Adochiei, Valeriu David ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=26002
ANALYSIS OF BRAIN ACTIVITY IN THE CASE OF MAGNETIC FIELD EXPOSURE
Environmental Engineering and Management Journal › Vol. 12 › Nr. 6 AbstractThis paper presents some results of the brain electrical activity’s analysis in case of the magnetic stimulation. It was recorded andanalyzed the electroencephalography (EEG) signal during magnetotherapy procedures in abdominal region, considering this factlike as a possible exposure of subject at magnetic field. The recordings of EEG signals are performed on 13 healthy volunteers inthree conditions (before, during and after magnetic stimulation), using three types of sinusoidal pulses. ... Autori: Călin Corciovă, Doru Andriţoi, Mariana Ciorap, Radu Ciorap, Valeriu David ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=26005
RECORDING AND PROCESSING ELECTROCARDIOGRAPHY SIGNALS DURING MAGNETOTHERAPY PROCEDURES
Environmental Engineering and Management Journal › Vol. 12 › Nr. 6 AbstractThis paper presents the results of electrocardiography (ECG) signals recording when the subjects were exposed to magnetotherapy procedure, with different magnetic field pulses. After the time domain and frequency domain representations of therecorded signals, there were trying to recover ECG signals waveforms, especially those during magneto therapy. In order toidentify possible changes in ECG signals during the exposure to magnetic fields, there were also determined the R-R intervalvari... Autori: Doru Andriţoi, Marius Branzila, Radu Ciorap, Valeriu David ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=26006
Environmental Engineering and Management Journal - Vol 12, No 6
Environmental Engineering and Management Journal › Vol. 12 › Nr. 6 • STUDIES ON HEAT RECOVERY FROM CELLULOSIC TEXTILES FINISHING WASTEWATER • ASSESSMENT OF SYNERGIC REGULATORY ACTIONS OF SPRUCE BARK EXTRACT AND DEUTERIUM DEPLETED WATER ON MAIZE (Zea mays L.) CROPS • LUNG CANCER RISK INDUCED BY RESIDENTIAL RADON IN CLUJ AND ALBA COUNTIES, ROMANIA • A CLEAR SKY IRRADIATION ASSESSMENT USING THE ESRA MODEL AND SRTM DATABASE • ENVIRONMENTAL FACTORS ASSOCIATED WITH DYSPHONIA IN PROFESSIONAL VOICE USERS ... Autori: ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=26014
MAGNETIC FLUID EQUIPMENT FOR SORTING SECONDARY POLYOLEFINS FROM WASTE
Environmental Engineering and Management Journal › Vol. 12 › Nr. 5 AbstractThe paper presents the research made on the FP7 project „Magnetic Sorting and Ultrasound Sensor Technologies for Productionof High Purity Secondary Polyolefins from Waste” in order to develop a magnetic fluid equipment for sorting of polypropylene(PP) and polyethylene (PE) from polymers mixed waste streams. Because both PP and PE float in water, it is difficult to separateone from the other. The paper presents the principles of inverse magnetic density separation process and the results ... Autori: Bin Hu, Francesco Di Maio, Guillaume Houzeaux, Liana Baltes, Mircea Tierean, Peter Rem ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=26028
COMPUTER-AIDED IMAGE ANALYSIS AND EPR CHARACTERIZATION OF TRANSFORMED ASBESTOS CONTAINING WASTES
Environmental Engineering and Management Journal › Vol. 13 › Nr. 1 AbstractInvestigations on thermochemical transformation of asbestos fibers followed by computer aided image analysis are presented.Asbestos Containing Wastes (ACW), notably asbestos-cement, were characterized before and after microwave heating withadditives aimed at reacting with and transforming asbestos fibers. Microprobe analysis helped determine the chemicalcompositions. X ray diffraction (XRD) was used to confirm decomposition of asbestos fibers during microwave heating. Electronparamagneti... Autori: Yan Yvon ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=26256
ENVIRONMENTAL IMPACTS OF THE ELECTROMAGNETIC FIELD LEVELS NEAR OVERHEAD TRANSMISSION LINES
Environmental Engineering and Management Journal › Vol. 13 › Nr. 3 AbstractAccording to the contemporary research, there are some indications that extremely low frequency electromagnetic fields, such asthose originating from electric power transmission lines, can have some influence on human health. This work involved thecomputation of the magnetic field generated by one typical 110 kV power transmission line in Serbia by applying artificialintelligence techniques that, as previous investigations confirmed, allow accurate assessment. At first, the investigation... Autori: Jasmina Skerlić, Jasna Radulović, Milorad Bojić, Vesna Ranković ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=26316
APPLICATION OF MAGNETIC NANOPARTICLES IN DRINKING WATER PURIFICATION
Environmental Engineering and Management Journal › Vol. 13 › Nr. 8 AbstractPathogenic bacteria are fetal to human health, requiring cost-effective and safe approaches to be removed from drinking watersource. With poly-allylamine-hydrochloride (PAAH) stabilization, magnetic nanoparticles (MNPs) were introduced in this studyto remove pathogenic bacteria by electrostatic interaction and magnet capture. High removal efficiency was achieved for fourmain pathogenic species, as Escherichia, Acinetobacter, Pseudomonas and Bacillus, and over 99.5% of the pathogens can b... Autori: Yunfeng Xu ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=26475
INFLUENCE OF NON-IONIZING ELECTROMAGNETIC FIELDS ON REDOX SYSTEMS IN SOLUTIONS
Environmental Engineering and Management Journal › Vol. 13 › Nr. 10 AbstractThis paper presents the experimental results obtained during testing in an electromagnetic field with non-ionizing radiations fromlow-intensity microwaves acting on a group of substances consisting of: double distilled water, neutralized to pH = 7; drinkingwater with pH = 7.3; slightly acidic aqueous solutions obtained by diluting the acetic acid at concentrations of 2.25‰, 4.5‰ and9‰ in double distilled water, for pH = 6.8, 6.7 and 6.5, respectively. The exposure of the samples was perf... Autori: Gheorghe Morariu ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=26562
ELECTROMAGNETIC POLLUTION OF THE HOSPITAL ENVIRONMENT DUE TO NEW GENERATION MOBILE PHONES
Environmental Engineering and Management Journal › Vol. 14 › Nr. 1 Abstract
The aim of this paper is to characterize the electromagnetic pollution of the hospital environment and to determine what effects it
could have on patient care, focusing on the electromagnetic interference phenomena of medical devices due to new generation
mobile phones emissions. Measurements results of the electromagnetic background and mobile phone emissions are presented,
along with the effects on specific susceptible medical devices.
... Autori: Vlad Dafinescu ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=26620
NEW COMPLEXES OF 2-(1H-1, 2, 4-TRIAZOL-3-YL) PYRIDINE WITH Co(II), Cd(II), Rh(III), IONS: SYNTHESIS, STRUCTURE, PROPERTIES AND POTENTIAL APPLICATIONS
Environmental Engineering and Management Journal › Vol. 14 › Nr. 2 Abstract
Co(II), Cd(II) and Rh(III) complexes with 2-(1H-1,2,4-triazol-3-yl)pyridine (Htzp) as ligand were synthesized and investigated.
The neutral mononuclear complexes with a generic [M(tzp)n] structure have been prepared from Htzp and corresponding
transition metals chlorides at 2:1 and 3:1, respectively molar ratios in H2O–EtOH. The resulted crystalline complexes were
investigated through magnetic and molar conductivity measurements, elemental analysis, FT-IR, mass spectroscopy, t... Autori: Petronela Horlescu ISSN: 1 http://www.ecozone.ro/reviste.php?RID=26652
ADSORPTION EQUILIBRIUM AND EFFECTIVE DIFFUSIVITY IN CYLINDRICAL ALUMINA PARTICLES IMPREGNATED WITH CALCIUM CHLORIDE
Environmental Engineering and Management Journal › Vol. 14 › Nr. 3 Abstract
Adsorption equilibrium and effective diffusion coefficients of water vapor, in cylindrical particles of activated alumina (A) and
activated alumina impregnated with calcium chloride (MCA), are experimentally determined. The experiments were conducted at
303 K and 323 K using cylindrical particles with 2.5 mm in both length and diameter. Diffusion coefficients were determined
from the kinetics of water sorption. The measurements were conducted in a constant pressure unit based on a m... Autori: Eugenia Teodora Iacob Tudose ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=26665
MAGNETIC CONTAMINATION OF ENVIRONMENT – LABORATORY SIMULATION OF MIXED IRON OXIDES IMPACT ON MICROORGANISM CELLS
Environmental Engineering and Management Journal › Vol. 14 › Nr. 3 Abstract
Magnetic contamination is considered more and more as a challenging issue related to biosphere pollution with magnetic
materials originating in natural and artificial sources (volcanic eruptions and respectively industrial activities that contributed to
iron and other metal compounds spreading in air, water and soil). Aiming to study the impact of magnetic metal ions such as iron
and cobalt on the metabolism of some environmental microorganisms, in this paper an experimental simulat... Autori: Lacramioara Oprica ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=26675
SIMPLE ECO-FRIENDLY -GALACTOSIDASE IMMOBILIZATION ON FUNCTIONALIZED MAGNETIC PARTICLES FOR LACTOSE HYDROLYSIS
Environmental Engineering and Management Journal › Vol. 14 › Nr. 3 Abstract
β-galactosidase from Aspergillus oryzae was strongly immobilized on magnetic particles functionalized with amino groups. By
simple incubation without any activating agents, electrostatic interactions between amino groups and enzymes allowed obtaining
a strong linkage. The immobilization efficiency was studied with the quantification of amino groups of the particles and of
immobilized β-galactosidase. Kinetic parameters, especially the maximal velocity Vmax and the affinity... Autori: Kalim Belhacene ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=26682
SYNTHESIS AND BIOEVALUATION OF MAGNETIC PARTICLES BASED ON CHITOSAN AND PHYTOCOMPONENTS FROM Eugenia carryophyllata AQUEOUS EXTRACT
Environmental Engineering and Management Journal › Vol. 14 › Nr. 4 Abstract
In this study we report the preparation and evaluation of the antimicrobial activity of a new hybrid material based on chitosan
(CH), magnetite (Fe3O4) and phytocomponents from the Eugenia carryophyllata aqueous extract (AE). CH/Fe3O4 was prepared
by chemical precipitation of Fe2+ and Fe3+ ions in aqueous solution of sodium hydroxide and CH. E. carryophyllata’s dried buds
were hydrodistilled under microwave conditions. The AE was separated in three equal parts, one for the chl... Autori: Ion Anghel ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=26707
RISK FACTORS IN AUTISM SPECTRUM DISORDERS: THE ROLE OF GENETIC, EPIGENETIC, IMMUNE AND ENVIRONMENTAL INTERACTIONS
Environmental Engineering and Management Journal › Vol. 14 › Nr. 4 Abstract
Autism spectrum disorders (ASD) are a heterogeneous group of neurodevelopmental disorders that affect an individual’s ability
to communicate and socialize, often associated with repetitive movements or behaviors. Frequently patients associate intellectual
disability or digestive problems. Autism is more common in males and affects 1 in 88 children in USA. The mechanism that
leads to ASD is very complex, involving genetic, epigenetic, immune and environmental factors that could... Autori: Cristina Rusu ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=26712
PREPARATION, CHARACTERIZATION AND ADSORPTION PROPERTIES OF MFe2O4 (M = Ni, Co, Cu) NANOPOWDERS
Environmental Engineering and Management Journal › Vol. 14 › Nr. 6 Abstract
MFe2O4 nanopowders (M = Ni, Co, Cu) were prepared using the precursor technique, starting from the corresponding metal
nitrates and poly(vinyl alcohol)-PVA. During the heating of metal nitrates- PVA solution, a redox reaction takes place around
150°C, leading to the formation of M(II) and Fe(III) carboxylates. These compounds were used as precursors for the ferrites
nanopowders. The desired ferrites were obtained by thermal decomposition of the carboxylates; the obtained... Autori: Marcela Stoia ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=26745
EXPERIMENTAL INVESTIGATION ON THE HEAT OF COMBUSTION FOR SOLID PLASTIC WASTE MIXTURES
Environmental Engineering and Management Journal › Vol. 14 › Nr. 6 Abstract
The aim of this paper is to determine the heat of combustion of plastic wastes resulted from municipal solid waste, automotive
shredder facility waste and building and construction waste. The plastic wastes have been separated by flotation technique using
as flotation media: water, ethanol, their mixtures and magnetic fluid. Resulted fractions have been analyzed aiming to determine
the most effective fraction from the heat of combustion point of view. The obtained results have been ... Autori: Liviu Costiuc ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=26750
COLOR REMOVAL OF REACTIVE TEXTILE DYES FROM AQUEOUS SOLUTION BY RAW AND MODIFIED FUNGAL BIOSORBENT
Environmental Engineering and Management Journal › Vol. 14 › Nr. 10 Abstract
This study concentrates on the reactive biosorption of dyes such as Reactive Red 3:1 (RR3:1), Reactive Orange 13 (RO13),
Reactive Blue 13 (RB13), Reactive Blue 72 (RB72). The modified fungal biosorbent, Paecilomyces sp., had a higher dye
biosorption yield in our study. 100% of biosorption yield observed on RR3:1 and RB13 and 94.09% of color removal of RO13
with the chemically modified biosorbent were great. Also, such modified biosorbent exhibited remarkable performance in
simulate... Autori: Ahmet Çabuk ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=26860
THE EXPOSURE TO ELECTROMAGNETIC FIELD AND ELECTROCARDIOGRAPHIC SIGNAL MODIFICATION TO MEDICAL PERSONNEL
Environmental Engineering and Management Journal › Vol. 14 › Nr. 12 Abstract
This paper presents the results of electrocardiography (ECG) signal acquisition, the heart rate variability (HRV) extraction
method and the statistical processing of the extracted features on human exposed below the maximum level of exposure of the
electromagnetic field. The ECG recordings were acquired in common situation of electromagnetic fields exposure occurring in
hospitals: the power line supply (50 Hz), the fluorescent lights tubs (5 KHz - 150 KHz) and the electrosurgical un... Autori: Narcis Iulian Adochiei ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=26904
FERLENT® - A CONTROLLED RELEASE FERTILIZER PRODUCED FROM A POLYMERIC MATERIAL WITH AGRONOMIC BENEFITS
Environmental Engineering and Management Journal › Vol. 14 › Nr. 12 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
REMOVAL OF HEXAVALENT CHROMIUM FROM WATERS BY MEANS OF A TiO2-Fe3O4 NANOCOMPOSITE
Environmental Engineering and Management Journal › Vol. 15 › Nr. 5 This paper aims to establish the capacity removal of hexavalent chromium [Cr(VI)] from wastewaters using a TiO2 – Fe3O4 based
nanocomposite. Latest researches in the field point adsorption as a better option for removal of heavy metal ions from waters, this
method being more efficient and cost effective, in comparison with other advanced methods like reverse osmosis, ion exchange,
nanofiltration, etc. Based on this information, the goal of this work had as purpose the obtaining, charact... Autori: Andra Predescu ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=27025
MAGNETIC NANOPARTICLES USED IN ENVINRONMENTAL ENGINEERING FOR Pb AND Zn REMOVAL
Environmental Engineering and Management Journal › Vol. 15 › Nr. 5 Maghemite nanoparticles (γ-Fe2O3) were synthesized in order to be used as magnetic adsorbent for two heavy metals, Pb(II) and
Zn(II), from aqueous solutions. γ-Fe2O3 was prepared from magnetite nanoparticles and was tested for single and binary aqueous
solutions. Efficiency removal (%) for single solutions appears only after 10 minutes and was higher than 80%. In case of binary
solutions, same results regarding efficiency removal were registered after 60 minutes, being almost 90% ... Autori: Ecaterina Matei ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=27029
COMPARISON OF SOME NON-CONVENTIONAL SORBENTS FOR THE REMOVAL OF ARSENIC FROM WATERS
Environmental Engineering and Management Journal › Vol. 15 › Nr. 8 Iron humate (IH) produced as a waste by-product during the industrial manufacture of humic substances from young brown coal
was tested as a new cost-effective sorbent for the removal of inorganic arsenic from waters. Its removal efficiency was compared
with that of two other non-conventional sorbents – magnetite and oxihumolite (weathered brown coal). Magnetite and IH have
been found to be effective in removing both forms of inorganic arsenic (arsenite and arsenate) from aqueous solutio... Autori: Pavel Janoš ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=27098
EDITORIAL Electromagnetic Compatibility and Engineering in Medicine and Biology International Conference and Exposition on Electrical and Power Engineering – International Workshop in Electromagnetic Compatibility and Engineering in Medicine and Biology
Environmental Engineering and Management Journal › Vol. 15 › Nr. 12 This special issue of Environmental Engineering and Management Journal is a natural continuation of our previous endeavors to bridge two important domains: Electromagnetic Compatibility (EMC) and Engineering in Medicine and Biology (EMB). The approached theme also constitutes the subject of the “International Workshop in EMC and EMB”, organized as part of the “International Conference and Exposition on Electrical and Power Engineering – EPE” at the Faculty of Electr... Autori: ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=27195
ATHERMAL MICROWAVE RADIATION AFFECTS THE GENETIC OF VEGETAL EMBRYOS
Environmental Engineering and Management Journal › Vol. 15 › Nr. 12 In this paper low power microwave radiation impact on Zea mays root meristeme tissues was investigated. Seeds with uniform genophond were exposed for 3 hours at 10 W incident power level in controlled condition to continuous wave at three different frequencies (0.6 GHz, 1 GHz and 2.5 GHz) and let to germinate after electromagnetic exposure. Dosimetric assessment made experimentally and computationally allowed the proper energetic characterization of the interaction between vegetal tissue and rad... Autori: Mihaela Răcuciu ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=27196
ANALYSIS AND IMPROVEMENT TECHNIQUES FOR THE TRANSFER FUNCTION OF A PLANAR LOW – PASS FILTER
Environmental Engineering and Management Journal › Vol. 15 › Nr. 12 In this paper new techniques for the analysis and improvement of the transfer function of a low-pass filter made in planar
electromagnetic technology are proposed. The low pass filter is a fundamental element of the filter used for conduction
electromagnetic interferences suppression. For this purpose, in order to determine the filter’s transfer function, 3D
electromagnetic CAE (Computer Aided Engineering) are coupled with simulation software programs which use equivalent
electric circ... Autori: Adina Racasan ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=27198
AUTOMATIC LONG TERM SURVEY OF MAGNETIC FIELDS IN RESIDENTIAL AREAS. INSTRUMENTATION AND MEASUREMENTS
Environmental Engineering and Management Journal › Vol. 15 › Nr. 12 In this paper we present the results of the long term survey of the low frequency (50 Hz÷ 20000 Hz) background magnetic induction (B) in some residential areas. Firstly, we present the triaxial measurement system proposed, realized and calibrated by authors, which has an uncertainty of about 5%. This instrument can make the automatic long term survey with the characterization of the magnetic fields, being adequate to estimate the human exposure. We used our instrument to perform both spot... Autori: Ionuţ Nica ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=27203
MEASURING INDUCED FOOT CURRENTS CAUSED BY RADIOFREQUENCY ELECTROMAGNETIC FIELDS EXPOSURE OF MANPACK RADIO TRANSCEIVERS USERS
Environmental Engineering and Management Journal › Vol. 15 › Nr. 12 In order to limit personnel exposure to electromagnetic fields, safety standards provide among others, limitations in terms of induced currents in limbs, which is the measurable quantity allowing the evaluation of thermal load in limbs in the real conditions of electromagnetic radiofrequency exposure. Using a clamp-on current meter, eleven subjects were measured for current passing through their feet during the use of backpacked radio equipment, configured in various operating modes while using ... Autori: Annamaria Paljanos ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=27204
ASSESSMENT OF RADIOFREQUENCY EXPOSURE LEVELS GENERATED BY WIMAX BASE STATIONS
Environmental Engineering and Management Journal › Vol. 15 › Nr. 12 The radiofrequency (RF) electromagnetic fields represent one of the most common and fast growing environmental influences, raising concerns about possible effects on human health. The fact that there is a continuous change and an emergence of RF communication technologies on the market also leads to a change of daily RF exposure levels for the general public. In such a context, the main objective of our study is to assess the RF exposure originating from the emerging Worldwide Interoperability f... Autori: Eduard Lunca ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=27215
MOBILE PHONES ELECTROMAGNETIC FIELD RADIATION RESEARCH AND ANALYSIS OF ITS DISPERSION BY APPLYING MATLAB7 SOFTWARE
Environmental Engineering and Management Journal › Vol. 16 › Nr. 5 The propagation of electromagnetic radiation was investigated at different points, and the theory of covariance was applied to identify the main parameters by recording the max, mean and min values of density. The biggest electric field strength values are emitted by the second generation (2G) GSM mobile phones that operate in the frequency band of 900 MHz. The smaller electric field strength values are determined by the higher frequency (1800 MHz) used by mobile phones and smaller maximum power... Autori: Raimondas Buckus ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=27314
SYNTHESIS OF ALGINATE AMIDE COMPOSITE USING MICROWAVE AND ITS DYE REMOVAL ABILITY
Environmental Engineering and Management Journal › Vol. 16 › Nr. 9 In this work, magnetic alginate was synthesized by encapsulating of Nickel Zinc Ferrite nanoparticle within Ca-alginate. The
synthesized magnetic alginate was modified by ethylenediamine using microwave radiation to remove anionic dye from
wastewater. The characteristics of magnetic nanoparticle, magnetic alginate and magnetic alginate amide (MAA) were studied
using Fourier transform infrared (FTIR) and Scanning electron microscope (SEM). FTIR analysis confirmed the amidation of
alginate. Di... Autori: Niyaz Mohammad Mahmoodi ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=27424
MEASUREMENTS ON ELECTROMAGNETIC SCATTERED FIELDS OF SOME RF AND MICROWAVE EQUIPMENTS
Environmental Engineering and Management Journal › Vol. 16 › Nr. 10 In many laboratories, offices and home rooms exists devices and equipment working in the radio frequency (RF) and microwave
(MW) bands. People working with these equipments may be exposed to electromagnetic fields of high density that can produce
adverse effects on human health. It is suitable to perform measurements on the scattered fields, especially in the near-field
regions (Fresnel’ radiating and reactive regions), where the incident power density can reach dangerous levels for occ... Autori: Sorin-Bogdan Balmus ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=27466
PREPARATION AND SEM-EDX-XRD CHARACTERIZATION OF MAGNETIC ZEOLITIC MATERIALS OBTAINED FROM COAL FLY ASH
Environmental Engineering and Management Journal › Vol. 16 › Nr. 11 A low-cost magnetic zeolitic material was synthesized from coal fly ash by means of a new, simple method involving alkaline
hydrothermal zeolitization of fly ash (FA) followed by low-intensity wet magnetic separation. Scanning electron microscopy
with energy-dispersive X-ray analysis was applied to characterize the composition, microstructure, and morphology of the
material. The mineral and synthetic zeolite phases were identified by powder X-ray diffraction. The obtained magnetic zeolitic
m... Autori: Annie Shoumkova ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=27486
ENVIRONMENTALLY FRIENDLY PROCESSINGS BY ELECTROMAGNETIC FORMING IN AUTOMOTIVE INDUSTRY
Environmental Engineering and Management Journal › Vol. 17 › Nr. 1 Reduction of environmental pollution in general, and emissions of greenhouse gases in particular, remain priorities for the sustainable development of human society. The strategies applied for designing industrial manufacturing processes were radically changed; nowadays the focus is mainly on the efficient use of energy sources. This means that at this moment there is a huge demand for innovative environmentally friendly technologies, for various industrial processing sectors. Electromagnetic fo... Autori: Dorin Luca ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=27539
LANDSLIDE SURVEILLANCE USING A WIRELESS MEASUREMENT GRID
Environmental Engineering and Management Journal › Vol. 17 › Nr. 1 This paper presents a wireless landslide measurement grid based on new type of transducers. Magnetic strain gauges are used as sensitive element for the transducer. Measurements regarding landslide displacement and orientation were done using strain gauges based on amorphous magnetic microwires (MAW). In order to identify small changes in the monitoring area, a grid of
multiple measurement points is placed. Measurement nodes acquire modulus and direction of displacement vector reporting the dat... Autori: Cătălin Damian ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=27544
KINETICS AND EQUILIBRIUM STUDIES OF 4-CHLOROPHENOL ADSORPTION ONTO MAGNETIC ACTIVATED CARBON COMPOSITES
Environmental Engineering and Management Journal › Vol. 17 › Nr. 4 Among the organic pollutants, the chlorinated phenols represent an important class of compounds having a stable world market of ca. 100 kt per year. Due to their aryl structure and presence of the chlorine atom, chlorinated phenols are exceptionally recalcitrant toward chemical reactions aimed at their reduction. Adsorption from liquid phase has received special interest due to its flexibility and simplicity in operation. Especially adsorption using activated carbon (AC) has been recognized by t... Autori: Marius Sebastian Secula ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=27552
Environmental engineering and Management Journal No. 4
› Vol. 1 › Nr. 11 • Environmental engineering and Management Journal No. 4
• AN ENHANCED ENVIRONMENTAL MULTIMEDIA MODELLING SYSTEM (FEMMS): PART II USER INTERFACE AND FIELD VALIDATION
• COST-EFFECTIVENESS OF OPTIMIZING CONCENTRATED FEED BLENDS TO DECREASE GREENHOUSE GAS EMISSIONS
• FATE AND BIODEGRADATION OF ESTROGENS IN THE ENVIRONMENT AND ENGINEERING SYSTEMS A REVIEW
• ANALYSIS OF THE MATERIAL COMPOSITION OF MIXED MUN... Autori: ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=27577
Environmental engineering and Management Journal No. 4
Environmental Engineering and Management Journal › Vol. 17 › Nr. 4 • Environmental engineering and Management Journal No. 4
• AN ENHANCED ENVIRONMENTAL MULTIMEDIA MODELLING SYSTEM (FEMMS): PART II USER INTERFACE AND FIELD VALIDATION
• COST-EFFECTIVENESS OF OPTIMIZING CONCENTRATED FEED BLENDS TO DECREASE GREENHOUSE GAS EMISSIONS
• FATE AND BIODEGRADATION OF ESTROGENS IN THE ENVIRONMENT AND ENGINEERING SYSTEMS A REVIEW
• ANALYSIS OF THE MATERIAL COMPOSITION OF MIXED MUN... Autori: ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=27576
AN IMPROVED MODELING FOR PREDICTION OF PM2.5 COLLECTION EFFICIENCY IN ELECTROSTATIC PRECIPITATORS
Environmental Engineering and Management Journal › Vol. 17 › Nr. 3 In this work, PM2.5 removal mechanism was explored to investigate PM2.5 collection efficiency under the influences of applied
magnetic field and diffusion charging (the main charging mode for submicron particle). The proposed electrostatic precipitators
(ESPs) mathematical model considered three-field interaction between fluid field, electromagnetic field and particle dynamic field.
CFD software FLUENT was used to generate the simplified solid structure of the ESP. In numerical calculation, t... Autori: Jian-Ping Zhang ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=27667
Environmental engineering and Management Journal No. 8
› Vol. 1 › Nr. 8 • INFLUENCING FACTORS OF THE ACCEPTABLE AMOUNT OF COMPENSATION OF FARMERS FOR CONTROLLING FERTILIZER-INDUCED WATER POLLUTION
• DETERMINATION OF THE RARE EARTH METALS IN THE RED MUD FOR POSSIBLE UTILIZATION
• Fe(II) AND Mn(II) REMOVAL FROM CONTAMINATED GROUNDWATER BY ADSORPTION: A COMPARISON OF ACTIVATED CARBON AND PINE BARK
• RESPONSE OF UPLAND COTTON GENOTYPES TO SALINITY AT EARLY GROWTH STAGES
• KINETICS AND ISOTH... Autori: ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=27782
EXTREMELY LOW-FREQUENCY ELECTROMAGNETIC FIELD DUE TO POWER SUBSTATIONS IN URBAN ENVIRONMENT
Environmental Engineering and Management Journal › Vol. 17 › Nr. 8 The objective of this paper is to measure magnetic flux density and electric field intensity due to selected power substations in the city of Tehran to evaluate the difference between the measured parameters and threshold levels specified in relevant standards. Hence, three types of power substations of 63, 230 and 400 kV were randomly selected. Based on confidence level of 95% (α =0.05), 250 measurements were made at various distances from power substations. It is found that the results o... Autori: Parvin Nassiri ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=27762
Environmental engineering and Management Journal No. 8
› Vol. 1 › Nr. 4 • INFLUENCING FACTORS OF THE ACCEPTABLE AMOUNT OF COMPENSATION OF FARMERS FOR CONTROLLING FERTILIZER-INDUCED WATER POLLUTION
• DETERMINATION OF THE RARE EARTH METALS IN THE RED MUD FOR POSSIBLE UTILIZATION
• Fe(II) AND Mn(II) REMOVAL FROM CONTAMINATED GROUNDWATER BY ADSORPTION: A COMPARISON OF ACTIVATED CARBON AND PINE BARK
• RESPONSE OF UPLAND COTTON GENOTYPES TO SALINITY AT EARLY GROWTH STAGES
• KINETICS AND ISOTH... Autori: ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=27729
Environmental engineering and Management Journal No. 8
› Vol. 1 › Nr. 4 • INFLUENCING FACTORS OF THE ACCEPTABLE AMOUNT OF COMPENSATION OF FARMERS FOR CONTROLLING FERTILIZER-INDUCED WATER POLLUTION
• DETERMINATION OF THE RARE EARTH METALS IN THE RED MUD FOR POSSIBLE UTILIZATION
• Fe(II) AND Mn(II) REMOVAL FROM CONTAMINATED GROUNDWATER BY ADSORPTION: A COMPARISON OF ACTIVATED CARBON AND PINE BARK
• RESPONSE OF UPLAND COTTON GENOTYPES TO SALINITY AT EARLY GROWTH STAGES
• KINETICS AND ISOTH... Autori: ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=27730
BIOSORPTION BEHAVIOR OF IMMOBILIZED Phanerochaete chrysosporium FOR HEAVY METALS REMOVAL
Environmental Engineering and Management Journal › Vol. 17 › Nr. 12 Heavy metals are inorganic persistent pollutants with adverse health and environmental effects. In our study, self-synthesized iron oxide magnetic nanoparticles were encapsulated in the Phanerochaete chrysosporium (P. chrysosporium) hyphae. The prepared biosorbents possessed high efficiency for Pb(II) biosorption from single and binary metal systems. The maximum biosorption capacity was found to be 50.05 mg g–1 at pH 5.0. Environmental scanning electron microscope accompanied with energy d... Autori: Danlian Huang ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=27864
DETERIORATION OF WATER QUALITY BY STAGNATION IN STORAGE TANKS
Environmental Engineering and Management Journal › Vol. 18 › Nr. 5 This study presents the influence of the storage recipients’ material and of the use and the type of stirring on the drinking water
quality. The kinetics of drinkable water quality alteration under stationary conditions and under magnetic and sonical stirring have
been monitored for a two weeks period. The microbiological parameters (total number of germs developed at 37°C and 22°C,
lactose-positive and lactose-negative bacteria, coliform bacteria and Echerichia coli), as well a... Autori: Laura Damian ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=27999
VISCOSE-MAGHEMITE/GOETHITE POLYMERIC COMPOSITE AS SORBENT FOR OIL SPILL CLEANUP
Environmental Engineering and Management Journal › Vol. 18 › Nr. 6 The paper reports on the preparation of polysiloxane hydrophobized viscose-maghemite/goethite magnetic composite
with properties appropriate for uses in oil spill sorption from polluted aqueous media. A multi-step procedure was
employed to obtain the polymeric composite. The structures of the prepared samples and precursors were analyzed by
Fourier transform infrared spectroscopy (FTIR), whereas their morphology was investigated by means of scanning
electron microscopy (SEM). The hydrophobic... Autori: Răzvan Rotaru ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=28008
EXTREMELY LOW FREQUENCY (50Hz) MAGNETIC FIELD INFLUENCES PHYSICO-CHEMICAL PROPERTIES OF WATER
Environmental Engineering and Management Journal › Vol. 18 › Nr. 9 The influence of 50 Hz sinusoidal magnetic field on physico-chemical properties of water was studied. Tanks with distilled water (120 mL) were individually exposed to action of homogenous 50 Hz magnetic fields, using a Helmholtz coils system. For magnetically exposure have been used different values of magnetic flux density (between 1 and 5 mT) and different durations of exposure (between 5 and 240 minutes). By means of this experimental study the physico-chemical properties of exposed water sam... Autori: Mihaela Răcuciu ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=28061
SPATIAL ASSESSMENT OF SOIL SALINITY BY ELECTROMAGNETIC INDUCTION SURVEY
Environmental Engineering and Management Journal › Vol. 18 › Nr. 9 Salinization occurs in natural conditions as a result of a complex of factors such as climate, topography, and hydrogeology. Salinity principally occurs in sub-humid to arid regions but secondary salinization is a consequence of direct human activities it extends by the day. In the field, soil salinity is deduced from apparent electrical conductivity (ECa) by using a range of devices. Although a number of proximal sensors have recently been used worldwide to simplify fieldwork, few studies using... Autori: Mihai Buta ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=28069
CONGO RED REMOVAL FROM AQUEOUS EFFLUENTS BY ADSORPTION ON CHERRY STONES ACTIVATED CARBON
Environmental Engineering and Management Journal › Vol. 19 › Nr. 2 Soluble dyes are intensively used in various industrial activities. They represent an important class of water pollutants from which they are rather difficult to remove. This paper focusses on the elimination of Congo Red (CR) ionic azo dye by adsorption on a low cost material. Cherry stones were used for activated carbon preparation by carbonization method. A temperature of 600 °C and a time of 4 h were found as adequate parameters for the physical activation and led to a final white powder... Autori: Cristina-Gabriela Grigoraș ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=28153
SYNERGISTIC EFFECT OF FUEL AGENTS AND MASS RATIO FOR MORPHO-STRUCTURAL OPTIMIZATION OF MAGNETIC CLAYBASED NANOCOMPOSITES WITH HIGH ADSORPTION CAPACITY
Environmental Engineering and Management Journal › Vol. 19 › Nr. 5 The study is focused on creating magnetic mesoporous materials through the insertion of a nickel ferrite into the structure of kaolintype clay. Sol-gel auto-combustion method was employed to synthesize the materials, using glycine and tartaric acid as chelating/combustion agents. This is the first study on the combined effect of different fuel agents and of clay-to-ferrite molar ratio
on the structural, textural, magnetic and adsorptive properties of nanocomposites. The value of the average por... Autori: Stefana Cojocaru ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=28210
FAST REMOVAL OF MALACHITE GREEN FROM AQUEOUS SOLUTIONS USING HIGHLY HYDROPHOBIC WATER‒DISPERSIBLE MAGNETIC NANOCOMPOSITE
Environmental Engineering and Management Journal › Vol. 19 › Nr. 7 Release of dyes without performing adequate treatment into the water can lead to environmental risk and serious health problems. The development of effective and economic adsorbent materials for the removal of dyes from industrial wastewaters has gained great consideration in recent years. In the present study, a novel bio-based nanocomposite has been developed for ultrasoundassisted
adsorption of malachite green (MG) from aqueous solutions. The synthesized adsorbent consisting of both hydropho... Autori: Mohsen Nekoeinia ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=28232
INFLUENCE OF SOLAR ACTIVITIES ON CLIMATE CHANGE
Environmental Engineering and Management Journal › Vol. 19 › Nr. 8 The solar energy received by the atmosphere of the Earth is universally distributed, which constitutes the atmospheric dynamics.
The changes observed in the climate of the Earth are due to solar output variations. Some detailed reviews have accounted for the
influence of solar activities on the climate using sunspot number derived from peak Sun hours, but has gaps in analyzing critical
statistical background information, seasonal, latitudinal and solar activity year validation. A number of st... Autori: Chukwuma Moses Anoruo ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=28260 |