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Rezultatele pentru biogasRezultate gasite: 51
Environmental Engineering and Management Journal, Vol. 4 Nr.3
Environmental Engineering and Management Journal › Vol. 4 › Nr. 3 Contain all the articles from this issueLignin in crop cultivations and bioremediationAlfred Abaecherli, Valentin I. PopaMaterials for intermediate-temperature solid oxide fuel cells and for proton exchange membrane fuel cellsAnnemarie Huijser, Joop SchoonmanAre interfacial biocatalysts important tools for nonpolluting technologies? 2. Immobilization of lipases and their representative applications Brindusa Dragoi, Emil DumitriuUASB treatment of fruit canning wastewater: pilot-scale invest... Autori: ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25180
Environmental Engineering and Management Journal, Vol. 9 Nr. 3
Environmental Engineering and Management Journal › Vol. 9 › Nr. 3 ? Denitrifying activity of activated sludge in suspension and in biofilm? Denitrifying potential of an activated sludge derived consortium? Biosorption of hexavalent chromium based on modified Y zeolites obtained by alkali-treatment? Identifying anaerobic digestion models using simultaneous batch experiments? Olive mill wastewater as a renewable resource? Influence of innoculum acclimation in the biodegradation rate and estimated biodegradbility of cow manure, food waste and oil? Studies on the ... Autori: ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25378
Opportunities and barriers for development of biogas technologies in Romania
Environmental Engineering and Management Journal › Vol. 7 › Nr. 5 AbstractThe development of technologies for waste treatment, simultaneously with minimizing greenhouse gas emissions, has become a matter of great concern at global level. Biogas systems can help in the fight against global warming by avoiding to escape methane from organic waste, into the atmosphere. Biogas technology is of great benefit to the end-users and the environment by energy, compost and nutrient recovery. Romania is a country with a huge biomass potential. Implementing of biogas techn... Autori: , Corina Alice Babutanu, Gheorghe Băran ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25300
Environmental Engineering and Management Journal, Vol. 7 Nr. 5
Environmental Engineering and Management Journal › Vol. 7 › Nr. 5 Include urmatoarele articole:â€? Biomass - A source of chemicals and energy for sustainable development â€? Equilibrium study of Pb(II) and Hg(II) sorption from aqueous solutions by moss peatâ€? Wood-based epoxy resins and the ramie fiber reinforced compositesâ€? Studies on the interaction between birch veneer and compounds with biocide potential actionâ€? Effect of methanogenic inhibitors, inocula type, and temperature on biohydrogen production from food componentsâ€? Energy from biomass in pul... Autori: ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25313
Abiotic and biotic mitigation of volatile methyl siloxanes in anaerobic gas-phase biomatrices
Environmental Engineering and Management Journal › Vol. 8 › Nr. 5 Abstract
This paper presents preliminary results of a batch-scale study assessing the contribution of the multiple phenomena involved in siloxane removal in three-phase biomatrices. Batch scale experiments were undertaken in shaken flasks containing acclimatised culture medium, solid media and siloxane vapours (octamethylcylotetrasiloxane and decamethylcyclopentasiloxane, respectively) under anaerobic gas-phase conditions. Abiotic and biotic phenomena, considered to be possible siloxane remov... Autori: Gabriela Soreanu, Patricia Falletta, Michel Beland, Kara Edmonson, Peter Seto ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25510
Stability factors and control strategy for biogas production from sludge
Environmental Engineering and Management Journal › Vol. 9 › Nr. 3 Abstract
A method based on measuring substrate depletion rate was developed to evaluate the denitrifying activity of activated sludge in suspension and in biofilm form in anoxic serum flasks. The adapted activated sludge inoculum was grown as biofilm in an anoxic rotating biological contactor (RBC). Acetate was used as external carbon source to obtain a carbon to nitrogen ratio (C/N) of 2. The results showed that the specific activity of cells in biofilm form was higher than in planktonic for... Autori: Elba Vivanco, Juan Carlos Ruiz, Paola Poirrier, Rolando Chamy, Yves Lesty ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25617
Environmental hazards and anaerobic treatment of wastewaters generated in alcohol industry
Environmental Engineering and Management Journal › Vol. 9 › Nr. 3 Abstract
Finding solutions to the waste problems generated by human activity represents a high concern of authorities and environment specialists for many years. Furthermore, energy conservation and reduction of the dependency from fossil fuels represents a top priority of governmental organizations at world level. The developments in alcohol industry have resulted in the increase of wastewaters which are highly polluted with organic substances, causing environmental pollution hazards. A wide... Autori: Carmen Mateescu, Ionel Constantinescu ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25626
Olive mill wastewater as a renewable resource
Environmental Engineering and Management Journal › Vol. 9 › Nr. 3 Abstract
The olive mill wastewater (OMW) is a stable emulsion composed by water, olive pulp and residual oil. An approach for using this waste as a renewable resource is of greater interest. Several authors have been studding physicochemical treatment methods. However, the biological treatments allow not only the treatment, but also the effluent valorization, by producing several valuable products. This effluent is also a source of natural antioxidants and its extraction is economically attra... Autori: Carina Pereira, Cristiana Goncalves, Isabel Belo, Madalena Alves ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25635
COMPARISON OF COMBINED ETHANOL AND BIOGAS POLYGENERATION FACILITIES USING EXERGY ANALYSIS
Environmental Engineering and Management Journal › Vol. 12 › Nr. 8 AbstractIn this paper, the background of bioethanol as an alternative fuel to conventional one is analyzed with the aim of examining theefficiency of biomass-to-fuel conversion by poly-generation taking into account the energy integration approach for a completerecovery of the process’ exergy potential.Based on literature data it is underlined that exergy analysis represents a primary tool to analyze the ethanol production processfrom an integrated point of view.... Autori: Anton Friedl, Maria Gavrilescu, Petronela Cozma ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25974
PRELIMINARY TRIAL APPLICATION OF BIOLOGICAL DESULFONATION IN ANAEROBIC DIGESTORS FROM PIG FARMS
Environmental Engineering and Management Journal › Vol. 12 › Nr. 4 AbstractThis paper describes preliminary tests carried out in treatment plants serving two different pig farms in Northern Italy, in order toassess the feasibility of implementing biological sulphur removal from biogas produced by anaerobic digestion processes. Thisnormally consists of mixture of CH4, CO2, and other gases; in the presence of sulphur, H2S is also formed, which must beremoved prior to the gas use in thermal engines, to avoid corrosion phenomena. Sulphur removal in the plants consi... Autori: Andrea G. Capodaglio, Arianna Callegari, Vincenzo Torretta ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=26074
STUDY ON GREENHOUSE GAS EMISSIONS FROM WASTEWATER TREATMENT PLANTS
Environmental Engineering and Management Journal › Vol. 12 › Nr. 1
Abstract
One of the causes of climate change is the accumulation of greenhouse gases (GHGs). Methane (CH4) is one of the greenhouse
gases, with an ability to trap heat in Earth's atmosphere 21 times greater than carbon dioxide (CO2) per unit mass and in the same
period of time. Because the lifetime of methane in the atmosphere is relatively short, it could be kept under control.
Wastewater treatment plants (WWTPs) are anthropogenic sources of CH4 emissions. Anaerobic digestion of t... Autori: Doru Lucian Manea ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=26139
ANALYSIS AND MODELLING OF THE SOLUBILITY OF BIOGAS COMPONENTS IN WATER FOR PHYSICAL ABSORPTION PROCESSES
Environmental Engineering and Management Journal › Vol. 12 › Nr. 1
Abstract
Biogas can be used as a renewable and green energy source by upgrading to natural gas. Water scrubbing, which is one of the
most widely-applied upgrading technologies, involves an accurate knowledge of the solubility of the main biogas components in
water, which is essential to the design and optimization of the biogas upgrading process.
In this work, we use several thermodynamic models available in the Aspen Plus software modeling environment to calculate the
solubilit... Autori: Petronela Cozma ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=26148
REMOVAL OF DYE AND CHEMICAL OXYGEN DEMAND (COD) REDUCTION FROM TEXTILE INDUSTRIAL WASTEWATER USING HYBRID BIOREACTORS
Environmental Engineering and Management Journal › Vol. 13 › Nr. 1 AbstractA bench-scale anaerobic bioreactor for the anaerobic treatment of textile wastewater using anaerobic sludge was experimented.The Top and bottom of hybrid bioreactor were functioned with UAF (Up Flow Anaerobic Filter) and UASB (Up Flow AnaerobicSludge Blanket), respectively. The effect of organic loading rate (OLR) and hydraulic retention time (HRT) on treatment oforganic matters in the textile wastewater was investigated. The maximum removal of chemical oxygen demand (COD) and colorwas 9... Autori: Reza Katal ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=26255
THE CARBON FOOTPRINT OF A BIOGAS POWER PLANT
Environmental Engineering and Management Journal › Vol. 13 › Nr. 11 AbstractIn our study, we examined the annual carbon footprint and energy balance of a Hungarian biogas power plant with a poweroutput of 0.637 MW in 2013, with reference to the complete life cycle of the biogas production. The life cycle analysis (LCA)considered the emissions of greenhouse gases (GHG) during the production of feedstock and its transportation into the powerplant, during the operation of the factory and during the process of rendering the discarded waste materials harmless. Weesta... Autori: György Szabó ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=26548
LANDFILL LEACHATE RECIRCULATION. PART I: SOLID WASTE DEGRADATION AND BIOGAS PRODUCTION
Environmental Engineering and Management Journal › Vol. 13 › Nr. 10 AbstractAnaerobic degradation (AD) of municipal solid waste (MSW) depends on the moisture and nutrient distribution within thebioreactor; these factors are affected by leachate recirculation. In this work, the effects of leachate recirculation of 15 to 120 byvolume percentage (%V) on AD were studied. The ojectives of this study are as follows: a) to determine which recirculation rateprovides the best conditions for accelerated anaerobic degradation (AD) and b) to determine the optimal range of r... Autori: Maria del Consuelo Hernández-Berriel ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=26557
INTEGRATED AND SUSTAINABLE SYSTEM FOR MULTI-WASTE VALORIZATION
Environmental Engineering and Management Journal › Vol. 13 › Nr. 10 AbstractThe general aim of this paper is to demonstrate the sustainable management of a broad spectrum of wastes (livestock, industrial,agri-food, agricultural and non-recyclable fraction proceeding from waste treatment plants) in an integrated plant. Thetechnological development and practical application of the “Mixed Plant” concept is used to achieve this objective. In order tovalorize in a joint form all the above-mentioned categories of waste, two different processes have been integrated. Th... Autori: Dolores Hidalgo ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=26579
AGRICULTURAL GREEN GAS DEMONSTRATION PROJECTS IN THE NETHERLANDS. A STAKEHOLDER ANALYSIS
Environmental Engineering and Management Journal › Vol. 13 › Nr. 12 Abstract
In the Netherlands green gas is seen as a sustainable alternative to natural gas. However, green gas is still not competitive to
natural gas in terms of pricing, and production volumes are remarkably low. Currently, there is a lot of attention to green gas
which stems from upgraded biogas, which is produced by manure-based anaerobic co-digestion by livestock farmers. In this
article the central question is to understand green gas demonstration projects from stakeholders’ persp... Autori: Thomas Hoppe ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=26603
ANAEROBIC BIOREMEDIATION OF PAH–CONTAMINATED SOIL: ASSESSMENT OF THE DEGRADATION OF CONTAMINANTS AND BIOGAS PRODUCTION UNDER THERMOPHILIC AND MESOPHILIC CONDITIONS
Environmental Engineering and Management Journal › Vol. 14 › Nr. 1 Abstract
The degradation of polycyclic aromatic hydrocarbons (PAHs) including fluorene, phenanthrene, anthracene, fluoranthene and
pyrene were investigated under thermophilic and mesophilic anaerobic-methanogenic conditions. By using central composite
design, the impact of PAH concentration and soil to inocula ratio were systematically studied for their influence on PAH removal
and biogas production. During the first 30 days, PAH concentration decreased in all samples indicating that the ino... Autori: Tahseen Sayara ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=26629
CASE STUDY ON ENERGY EFFICIENCY OF BIOGAS PRODUCTION IN INDUSTRIAL ANAEROBIC DIGESTERS AT MUNICIPAL WASTEWATER TREATMENT PLANTS
Environmental Engineering and Management Journal › Vol. 14 › Nr. 2 Abstract
Anaerobic digestion was analyzed as the biological process that converts the organic matter present in various types of wastes,
activated sludge from the wastewater treatment facilities respectively, into biogas. Latest advancements in the mathematical
modeling, simulation and control practices have helped in gaining a better insight of the process. In this paper, an energy
efficiency and techno-economical investigation of anaerobic digestion technology for the CHP cogeneration unit... Autori: Alexandrina Zuza ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=26648
THERMAL EFFICIENCY OF SMALL SCALE BIOGAS PLANT FOR BIO-METHANE PRODUCTION
Environmental Engineering and Management Journal › Vol. 14 › Nr. 4 Abstract
In this research, a small-scale biogas plant using methane fermentation was developed. The electrical energy consumed by the
heater/pump and the outside temperature of the small-scale biogas plant were logged from 1 July 2007 until 31 July 2009. The
thermal efficiency of the small-scale biogas plant was calculated based on the electrical energy consumed by the heater/pump and
the generated gas quantity. The results showed that a total thermal efficiency of 17.5% was obtained in the ... Autori: Daisuke Tashima ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=26694
CARBON FOOTPRINT OF ELECTRICITY FROM ANAEROBIC DIGESTION PLANTS IN ITALY
Environmental Engineering and Management Journal › Vol. 14 › Nr. 7 Abstract
In the context of biogas sustainability assessment, a promising way to reach greenhouse gases (GHG) reduction and fossil energy
savings is the anaerobic digestion (AD) of both animal manure and energy crops.
Nowadays, more than 1,100 AD plants are working in Italy, mostly located in Northern Regions. To those plants with an
electrical power lower than 1 MW, strong public incentives were given, therefore, several of them have been put into operation;
this entailed increasing cereal ... Autori: Jacopo Bacenetti ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=26771
OPTIMIZATION OF THERMOPHILIC ANAEROBIC DIGESTION OF WINERY BIO-WASTE BY MICRO-NUTRIENTS AUGMENTATION
Environmental Engineering and Management Journal › Vol. 14 › Nr. 7 Abstract
Thermophilic anaerobic digestion is a suitable technology to treat agricultural waste because of its higher biogas production,
hygienisation effect and solids removal efficiency. Although these benefits, poor effluent quality and instability are encountered
in some cases. The anaerobic co-digestion of winery waste and waste activated sludge at 55°C, operating at 23 days HRT and
with an organic loading rate of 3.2 kg COD/m3d, was characterized by accumulation of volatile fatty ac... Autori: Cinzia Da Ros ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=26775
LIQUID INJECTION TO ENHANCE BIOGAS PRODUCTION IN LANDFILLS FOR PRETREATED MUNICIPAL SOLID WASTES - BIO.LEA.R. PROJECT (LIFE+ PROGRAM)
Environmental Engineering and Management Journal › Vol. 14 › Nr. 7 Abstract
The Bio.Lea.R project aims to demonstrate the performance of a landfill for less reactive, biologically treated waste (pretreated
organic wastes) compared to a conventionally managed landfill, with regard to both environmental (biogas and leachate
production) and economic aspects. The objective is to control the pretreated biodegradable waste through a liquid injection in
order to achieve the same biogas quantity in a shorter time than in conventional landfill.
Laboratory and full ... Autori: Alberto Godio ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=26784
MYCELIAL GROWTH AND ENZYMATIC ACTIVITIES OF WHITE-ROT FUNGI ON ANAEROBIC DIGESTATES FROM INDUSTRIAL BIOGAS PLANTS
Environmental Engineering and Management Journal › Vol. 14 › Nr. 7 Abstract
Solid digestate (SD) represents an environmental problem due to the continuous increase of biogas production. In the present
study four white-rot fungal strains were screened for their ability to grow on two different SD samples, obtained from industrial
biogas plants, using wheat straw (WS) as a control medium. Results show that i) the feedstock used in the biogas plant influences
the time required for the colonization of the corresponding SD and ii) different fungal strains have d... Autori: Guglielmo Santi ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=26792
BIOGAS PRODUCTION FROM WHEAT STRAW PRE-TREATED WITH LIGNINOLYTIC FUNGI AND CO-DIGESTION WITH PIG SLURRY
Environmental Engineering and Management Journal › Vol. 14 › Nr. 7 Abstract
This study carried out for the first time a comparison among ligninolytic (white-rot) and cellulosolytic or xylanolytic
(Trichoderma) pre-treated wheat straw, for biogas production, potential, without or with pig slurry in co-digestion. Methane
(CH4) production from wheat straw pre-treated for 4 and 10 weeks with seven different fungal isolates was preliminarily
measured. Then, the effects on biogas yield of the co-digestion with pig slurry were checked on straw pre-treated with 3 s... Autori: Ciro Vasmara ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=26796
WOOD WASTE AS A RENEWABLE SOURCE OF ENERGY
Environmental Engineering and Management Journal › Vol. 15 › Nr. 3 The renewable sources of energy represent a viable alternative for satisfying the energetic needs of humanity in case the fossil
fuels reserves are exhausted, which is estimated to occur in maximum 25 years if the current rate of exploitation is maintained.
Nowadays, there are several concerns about the valorization of the energetic potential of these resources (wind, water flows,
solar, geothermal energy etc.), but also a series of extremely beneficial practical uses (i.e. wind parks, photov... Autori: Daniela Suteu ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=26989
INFLUENCE OF FREEZING/THAWING AND DRYING/MILLING ON BIOCHEMICAL METHANE POTENTIAL
Environmental Engineering and Management Journal › Vol. 15 › Nr. 7 In studies of biochemical methane production (BMP) researchers often collate a large number of samples at the same time for a
sample archive. The samples are often frozen to avoid microbial transformation, further homogenized by grinding. We studied
the influence of subfreezing/thawing and drying/milling of energy crop on BMP and anaerobic biodegradability (BD). Relative
standard deviation (RSD, %) between the BMP of controls and of the subfrozen was in the range 2.1–9.0%, and of the
d... Autori: Jin Mi Triolo ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=27079
CAN DISINTEGRATION BASED ON COD (DDCOD) REPRESENT THE BIODEGRADABILITY OF DISINTEGRATED SLUDGE?
Environmental Engineering and Management Journal › Vol. 15 › Nr. 8 The research presented in this paper aimed to investigate the relationship between sludge anaerobic biodegradability and degree
of sludge disintegration based on COD (DDCOD) in a wide range from 0 to 66.7%. Sonication as an advanced sludge pretreatment
was used to disintegrate sludge. Meanwhile, biogas production in the anaerobic digestion process was used to present the sludge
biodegradability. The performances of anaerobic digestion for pretreated sludge at different degrees of disintegrati... Autori: Shuyu Yu ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=27100
ENVIRONMENTAL IMPACT ASSESSMENT OF ELECTRICITY GENERATION FROM BIOGAS IN PALESTINE
Environmental Engineering and Management Journal › Vol. 15 › Nr. 9 In Palestine, the energy situation is unique compared to other Middle Eastern Countries, as there are technical and political
challenges for transporting, storing, importing and exporting energy. Actually, energy import from Israel meets the major share
of Palestinian energy needs. Palestinian reliance on Israel concerning its energy supply is an issue due to the political situation.
Furthermore, from an environmental point of view, Israel predominantly relies on fossil fuels for its own elec... Autori: Jacopo Bacenetti ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=27120
BIOGAS PRODUCTION FROM BIODEGRADABLE BIOPLASTICS
Environmental Engineering and Management Journal › Vol. 15 › Nr. 9 In this study, the potential for biogas production from biodegradable bioplastics was evaluated. Mater-Bi® (a family of maizestarch
based flexible films) and PLA (PolyLactic Acid; a rigid, polylactide-based, polymer) bioplastics were digested in laboratory
batch reactors, alone or in co-digestion with pig slurry or scotta (partially deproteinized cheese whey), at 35°C or 55°C. Methane
(CH4) and hydrogen (H2) production were monitored during the incubation period. Maximum CH4 (Mmax... Autori: Ciro Vasmara ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=27134
ORGANIC ACID PRODUCTION FROM THE ORGANIC FRACTION OF MUNICIPAL SOLID WASTE AND COW MANURE IN LEACHING BED REACTORS
Environmental Engineering and Management Journal › Vol. 15 › Nr. 11 This study was carried out to (1) investigate the potential of in-vessel solid-state anaerobic acidogenic co-digestion of high solids containing substrates, namely organic fraction of municipal solid waste (OFMSW) and cow manure and (2) examine the feasibility of using leaching bed reactors (LBR) for hydrolysis/liquefaction and acidification of OFMSW and cow manure mixtures for maximum total volatile fatty acid (VFA) and alcohol production. Results indicated that hydrolysis efficiency of 20-25% ... Autori: Tuba H. Erguder ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=27186
KINETIC CONSTANTS DETERMINATION OF PETROLEUM REFINERY EFFLUENT TREATMENT IN A UASB REACTOR USING RSM
Environmental Engineering and Management Journal › Vol. 16 › Nr. 1 In this study, an upflow anaerobic sludge blanket (UASB) bioreactor at the mesophilic temperature (38ºC) was successfully used for the treatment of petroleum refinery effluents. Response surface methodology (RSM) was applied for the design and analysis of experiments to predict the behavior of the initial COD and the hydraulic retention time (HRT) in the bioreactor. A statistical analysis indicated that the models adequately represented the experimental data. At the optimal conditions, the ... Autori: Seyed Omid Rastegar ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=27233
REDUCING CARBON FOOTPRINT OF A WASTEWATER TREATMENT PLANT USING ADVANCED TREATMENT AND RENEWABLE ENERGY SOURCES
Environmental Engineering and Management Journal › Vol. 16 › Nr. 5 In this paper carbon footprint is estimated for wastewater treatment plant Constanta South, Romania, by using a combined model from the available protocols for carbon footprint calculation. Off-site and on-site emissions were taken into account. The carbon footprint calculations were based on the operational data regarding power consumptions, sludge, chemicals and biogas production. A prediction for carbon footprint is done for upgrading wastewater treatment plant. For the current plant technolo... Autori: Lăcrămioara Diana Robescu ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=27299
POSTCLOSURE INFLUENCE OF EMISSIONS RESULTED FROM MUNICIPAL WASTE DUMP SITES: A CASE STUDY OF THE NORTH-EAST REGION OF ROMANIA
Environmental Engineering and Management Journal › Vol. 16 › Nr. 4 The Strategy of Waste Management, Horizon 2014-2020, states 8 major objectives with the role of establishing new priorities for Waste Management. Thus, one of the proposed measures for the next 5 years is encouraging the wastes exploitation for energy recovery. In this context, the main goal of our study was to evaluate the level of pollution considering 5 closed municipal waste dump sites from the North-East region of Romania over the period 2013-2015, having in mind at a first glance, the poss... Autori: Brînduşa Mihaela Slușer ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=27347
BIOPHYSICAL FACTORS AFFECTING THE ANAEROBIC DIGESTION OF WASTE COOKING OIL IN MODEL SYSTEMS
Environmental Engineering and Management Journal › Vol. 16 › Nr. 8 The anaerobic digestion (AD) of fat-containing waste is often prolonged in time and problematic. Differences in AD performances could rely in a different probability for microorganisms to access the substrate. The aim of this study was to study the AD of waste cooking oil (WCO) with a biophysical approach. Two laboratory experiments were carried out using model systems consisting of WCO + hydration medium (HM) in 100 mL, static, in-batch reactors. In the first experiment, we assumed the WCO to H... Autori: Francesca Fiume ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=27409
BIOGAS PRODUCTION FROM WHEAT STRAW PRE-TREATED WITH HYDROLYTIC ENZYMES OR SODIUM HYDROXIDE
Environmental Engineering and Management Journal › Vol. 16 › Nr. 8 Lignocellulosic residues are relatively recalcitrant to bioconversion during anaerobic digestion (AD) for biogas production. Pre-treatments with cellulolytic enzymes or diluted alkali can facilitate biomass hydrolysis and enhance the process. Both pre-treatments require low energy and chemical inputs, without accumulation of inhibitor. Milled wheat straw was pre-treated with hydrolytic enzymes or with diluted NaOH before AD. The pre-treatments were performed on sterilized, stabilized with formic... Autori: Ciro Vasmara ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=27420
ANAEROBIC DIGESTION OF FOOD WASTE FROM RESTAURANT OF A FERMENTATION INDUSTRY AND POTENTIAL FOR METHANE GAS PRODUCTION
Environmental Engineering and Management Journal › Vol. 16 › Nr. 9 In the present study, anaerobic treatment of food wastes from restaurants of a fermentation industry and methane gas production
yields produced during the treatment were investigated. For this purpose, food wastes with a Total Solid Contents (TS) ratio of 5-
7-10% were digested in a 100l experimental reactor. Batch anaerobic digestion studies were conducted at mesophilic
temperatures (36.5 oC) for 30 days and optimum Volatile Fatty Acids (VFA) and alkalinity values for methane gas production
... Autori: Sevgi Fersiz ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=27429
BIOMETHANATION OF PINEAPPLE WASTES USING POTENT ANAEROBIC CONSORTIA SUBSTITUTING COW MANURE
Environmental Engineering and Management Journal › Vol. 16 › Nr. 11 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
BIOGAS PRODUCTION FROM CORN BIOETHANOL WHOLE STILLAGE: EVALUATION OF TWO DIFFERENT INOCULA
Environmental Engineering and Management Journal › Vol. 17 › Nr. 5 According to EU Strategy for the Baltic Sea Region, Lithuania obligates to ensure sustainable growth, gain and maintain good condition of marine environment until 2020. In accordance with the sustainability approach, every potential cost and energy cutting as well as social sustainability measure for wastewater treatment should be explored. Nonetheless, Lithuania wastewater treatment plants (WWTP) in the sustainability context have never been evaluated before. A comprehensive set of 30 sustainab... Autori: László Gyenge ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=27578
SPENT COFFEE GROUNDS FROM COFFEE VENDING MACHINES AS FEEDSTOCK FOR BIOGAS PRODUCTION
Environmental Engineering and Management Journal › Vol. 17 › Nr. 10 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
CONSTRUCTION OF A BIOGAS HEAT STORAGE GREENHOUSE ECOSYSTEM UNDER THE CONTEXT OF WATER POLLUTION RESULTING FROM LIVESTOCK BREEDING
Environmental Engineering and Management Journal › Vol. 18 › Nr. 3 Livestock farming in rural areas in Jilin Province is producing a huge amount of organic pollutants like livestock and poultry
manure, of which, a large portion is directly dumped into the Yitng River, bringing serious harm to the environment. Taking
Soonlng Village as an example, this paper investigates the environmental pollution caused by the livestock husbandry in this village
and builds a biogas heat storage greenhouse ecosystem, which, by using solar energy to heat the biogas digester, ... Autori: Songying Zhao ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=27943
Environmental engineering and Management Journal No. 3
› Vol. 14 › Nr. 4 • ENVIRONMENTAL CHANGES IN NORTH-EASTERN ROMANIA A TRIGGER FACTOR FOR LYME DISEASE
• HYDROGEOCHEMISTRY AND ENVIRONMENTAL ISOTOPE COMPOSITIONS AND THEIR EVOLUTION IN GEOTHERMAL GROUNDWATER IN YIZHANG, HUNAN PROVINCE, CHINA
• CONSTRUCTION OF A BIOGAS HEAT STORAGE GREENHOUSE ECOSYSTEM UNDER THE CONTEXT OF WATER POLLUTION RESULTING FROM LIVESTOCK BREEDING
• ENVIRONMENTAL NOISE: HEALTH AND POLICY - AN UP TO DATE MINIREVIEW &nb... Autori: ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=27946
Environmental engineering and Management Journal No. 3
› Vol. 14 › Nr. 4 • ENVIRONMENTAL CHANGES IN NORTH-EASTERN ROMANIA A TRIGGER FACTOR FOR LYME DISEASE
• HYDROGEOCHEMISTRY AND ENVIRONMENTAL ISOTOPE COMPOSITIONS AND THEIR EVOLUTION IN GEOTHERMAL GROUNDWATER IN YIZHANG, HUNAN PROVINCE, CHINA
• CONSTRUCTION OF A BIOGAS HEAT STORAGE GREENHOUSE ECOSYSTEM UNDER THE CONTEXT OF WATER POLLUTION RESULTING FROM LIVESTOCK BREEDING
• ENVIRONMENTAL NOISE: HEALTH AND POLICY - AN UP TO DATE MINIREVIEW &nb... Autori: ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=27947
Environmental engineering and Management Journal No. 3
› Vol. 14 › Nr. 6 • ENVIRONMENTAL CHANGES IN NORTH-EASTERN ROMANIA A TRIGGER FACTOR FOR LYME DISEASE
• HYDROGEOCHEMISTRY AND ENVIRONMENTAL ISOTOPE COMPOSITIONS AND THEIR EVOLUTION IN GEOTHERMAL GROUNDWATER IN YIZHANG, HUNAN PROVINCE, CHINA
• CONSTRUCTION OF A BIOGAS HEAT STORAGE GREENHOUSE ECOSYSTEM UNDER THE CONTEXT OF WATER POLLUTION RESULTING FROM LIVESTOCK BREEDING
• ENVIRONMENTAL NOISE: HEALTH AND POLICY - AN UP TO DATE MINIREVIEW &nb... Autori: ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=27968
EFFECTS OF CHLORTETRACYCLINE AND COOPER ON SWINE MANURE ANAEROBIC DIGESTION
Environmental Engineering and Management Journal › Vol. 17 › Nr. 12 Chlortetracycline (CTC) and copper (Cu) are simultaneously used as feed additives to improve the growth performance and to prevent infection in pig farming. After ingestion by animals, most of these compounds are excreted and coexist in swine manure. They might have an influence on anaerobic digestion when the swine manure is used as substrate in a biogas plant. The purpose of this study was to investigate the effects of both CTC and Cu on batch swine manure anaerobic digestion in order to bette... Autori: Rui Wang ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=27983
EVALUATION OF BIOMETHANE YIELDS FROM HIGH-ENERGY ORGANIC WASTE AND SEWAGE SLUDGE: A PILOT STUDY FOR A WASTEWATER TREATMENT PLANT
Environmental Engineering and Management Journal › Vol. 18 › Nr. 9 The article describes a pilot study on a wastewater treatment plant operating a biogas plant (2.793 MW). The authors of the
experiment used organic waste material, including: chicken fat with feathers (FF), molasses (M), glycerol (GL), raw sewage sludge
(SS) and digested sewage sludge as an inoculum. The parameters of raw and digested sludge were compared, e.g. changes in the
concentrations of ammonium nitrogen (N-NH4+), alkalinities, chemical oxygen demand (COD) and light metal ions. Potenti... Autori: Agnieszka A. Pilarska ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=28064
BIOMASS EXPLOITATION FOR ENERGY SUPPLY AND QUALITY COMPOST PRODUCTION. AN EXEMPLARY CASE OF CIRCULAR ECONOMY IN THE NORTH EAST OF ITALY
Environmental Engineering and Management Journal › Vol. 18 › Nr. 10 The goal 12 of the 2030 Agenda for Sustainable Development takes into consideration the responsible consumption and production in the perspective of circular economy. The agri-food sector is more actively involved in these initiatives, because it offers the possibility to exploit waste and by-products, by adopting suitable biotechnologies. Such processes can be carried out either under aerobic conditions, for the production of compost, or anaerobically, for the production of biogas. In this work... Autori: Veronica Novelli ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=28078
ENHANCEMENT OF BIOGAS PRODUCTION FROM FOOD WASTES IN A HYBRID ANAEROBIC–AEROBIC BIOREACTOR BY MANURE ADDITION AND LIME-PRETREATMENT OF RECYCLED LEACHATE
Environmental Engineering and Management Journal › Vol. 18 › Nr. 12 The production of food wastes is a serious issue in developed and developing countries. The biogas production technology is one of the most sustainable methods for treating food wastes. Currently, there is a great need to implement suitable methods to enhance biodegradation and methane production. This study investigated the effect of manure addition and leachate lime-pretreatment on the biogas and methane production from spoilable municipal solid wastes using a hybrid anaerobic-aerobic bioreact... Autori: Fatemeh Aliasgari ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=28123
ANALYSIS OF COMBUSTION AND NOX FORMATION IN A SPARK IGNITION (SI) ENGINE FUELED WITH HYDROGENHYDROGEN OXYGEN (HHO) ENRICHED BIOGAS
Environmental Engineering and Management Journal › Vol. 19 › Nr. 5 A numerical simulation was conducted to investigate the combustion characteristics and effects of Hydrogen-Hydrogen Oxygen (HHO) addition on performance and NOx emission of a spark ignition (SI) biogas engine. At a given operating condition, indicative work cycle Wi increases with increase of HHO, CH4 concentrations and load rate; but it decreases with engine speed increase and reaches peak value as variation of equivalence ratio and advanced ignition timing. Combustion temperature T and NOx con... Autori: Bui Van Ga ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=28204
HOW TO DEAL WITH ORGANIC MUNICIPAL SOLID WASTE OVER-SIEVE FRACTION
Environmental Engineering and Management Journal › Vol. 19 › Nr. 10 The steady increase in separate waste collection has highlighted the urgent need to adequately deal not only with urban waste (differentiated and undifferentiated) but also with special waste produced by separate waste collection and recycling processes.
Source collected municipal solid waste produces different waste streams. One of this is the organic fraction of municipal solid waste (OFMSW). This fraction is central for circular economy, since it can be further transformed in order to recove... Autori: Ivana Moscato ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=28302
SUSTAINABLE BIOMETHANE: METHANE SLIP REMOVAL APPLYING REGENERATIVE CATALYTIC OXIDATION (RCO) POST COMBUSTION TECHNOLOGY
Environmental Engineering and Management Journal › Vol. 19 › Nr. 10 Biomethane is incentivized in Italy and in many other European countries as a substitute fuel for transport, in order to reduce fossil fuel and cut CO2 emissions. In Italy, Certificato di Immissione in Consumo (CIC) is actually sustaining biomethane production, charging petrochemical companies who need to cover their obligation quotes. Actually, biomethane production has to fulfil sustainability requirements in order to be entitled to get CIC. Sustainability principles are, among others, the typ... Autori: Ivana Moscato ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=28305 |