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A comparative cost analysis for using compost derived from anaerobic digestion as a peat substitute in a commercial plant nursery Ciencia e Investigación Agraria
Restrepo,Adriana P; García García,José; Moral,Raúl; Vidal,Fernando; Pérez-Murcia,María D; Bustamante,María Á; Paredes,Concepción.
A.P. Restrepo, J. Garcia-Garcia, R. Moral, F. Vidal, M.D. Pérez-Murcia, M.A. Bustamante, and C. Paredes. 2013. A comparative cost analysis for using compost derived from anaerobic digestion as a peat substitute in a commercial plant nursery. Cien. Inv. Agr. 40(2): 253-264. The aim of this study was to evaluate the economic feasibility of using compost made from anaerobically digested cattle slurries in a commercial nursery. Using a comparative cost analysis, commercial peat substrate growing media has been partially substituted with increasing proportions of compost (25, 50 and 75% v/v of compost). This experiment was intended to establish the conditions under which the use of these composts is feasible and competitive relative to commercial peat, at both...
Tipo: Journal article Palavras-chave: Anaerobic digestion; Costs; Economics; Growing media; Peat; Seedling production.
Ano: 2013 URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-16202013000200002
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Aeration strategies to improve nitrogen removal using deammonification process in EGSB reactor. Repositório Alice
CHINI, A.; KUNZ, A.; TÁPPARO, D.; SCUSSIATO, L. A..
Anaerobic digestion technology for stabilization and organic matter removal from swine slurry is widely used and long known, but this method not degrades nitrogen compounds present in abundance in the digestate. So, deammonification is being studied as an alternative for post treatment. In this process, two groups of bacteria nitrifying bacteria (aerobic microorganisms) and anammox (anoxic microorganisms) have to cooperate to complete ammonia remove. In this process, the ammonia oxidation by partial nitrification (PN) generate substrate to anammox activity, so there must have PN control to prevent nitrite accumulation. This way making the dissolved oxygen (DO) supply an important key to control and stabilization process. The present study aimed to test the...
Tipo: Artigo em anais de congresso (ALICE) Palavras-chave: ANAMMOX; Digestão anaeróbica; Anaerobic digestion.
Ano: 2014 URL: http://www.alice.cnptia.embrapa.br/handle/doc/1013548
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Ammonia determines transcriptional profile of microorganisms in anaerobic digestion BJM
Zhang,Nan; Peng,Huijuan; Li,Yong; Yang,Wenxiu; Zou,Yuneng; Duan,Huiguo.
ABSTRACT Anaerobic digestion is important for the management of livestock manure with high ammonia level. Although ammonia effects on anaerobic digestion have been comprehensively studied, the molecular mechanism underlying ammonia inhibition still remains elusive. In this study, based on metatranscriptomic analysis, the transcriptional profile of microbial community in anaerobic digestion under low (1500 mg L-1) and high NH4 + (5000 mg L-1) concentrations, respectively, were revealed. The results showed that high NH4 + concentrations significantly inhibited methane production but facilitated the accumulations of volatile fatty acids. The expression of methanogenic pathway was significantly inhibited by high NH4 + concentration but most of the other...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Anaerobic digestion; Ammonia; Pathway; Gene expression; Methanogenesis.
Ano: 2018 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822018000400770
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Anaerobic co-digestion of cocoa husk with digested swine manure: evaluation of biodegradation efficiency in methane productivity CIGR Journal
Darwin, Darwin.
The purpose of this study was to investigate the potential of methane production from anaerobic co-digestion of coco husk with digested swine manure.  The experiment was set up in the batch system.  Inoculum utilized in this experiment was derived from semi-continuous reactor run at steady state condition, with 25 days of hydraulic retention time and mesophilic condition.  The temperature applied in this experiment was maintained under mesophilic condition, which was 35oC.  The highest methane productivity generated from anaerobic co-digestion of cocoa husks (CH) with digested swine manure was 345.8 ± 7.82 mL/day, which was higher compared with the anaerobic digestion of digested swine manure alone (286.97 ± 16.8 mL/day).  CH reactors had less methane...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Anaerobic digestion; Methane production anaerobic co-digestion; Cocoa husk; Methane production; Biodegradation efficiency.
Ano: 2016 URL: http://www.cigrjournal.org/index.php/Ejounral/article/view/3724
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Batch anaerobic digestion of banana waste - energy potential and modelling of methane production kinetics CIGR Journal
Khan, Muhammad Tahir; Brulé, Mathieu; Maurer, Claudia; Argyropoulos, Dimitrios; Müller, Joachim; Oechsner, Hans.
Different fractions of banana (stalk, peel, and flesh) as well as the whole unpeeled banana were studied in a laboratory Biochemical Methane Potential (BMP) assay. After completion of 35-day digestion at 37°C in 2L-reactors, specific methane yields reached 0.256, 0.322, 0.367 and 0.349 m³/kg VS (volatile solids) for stalk, peel, flesh, and unpeeled banana respectively. Considering the country of Uganda, East Africa, the collection of peels and stalks from banana production would yield a theoretical potential of about 60 GWh of electrical energy per year in biogas plants. In order to verify the suitability of banana fractions to the biogas process, their chemical composition was analyzed, and their methane production kinetics was estimated with exponential...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Energy biogas; Anaerobic digestion; BMP assay; Model; Energy; Methane; Waste.
Ano: 2016 URL: http://www.cigrjournal.org/index.php/Ejounral/article/view/3244
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Biodegradabilidade anaeróbia dos resíduos provenientes das cadeias produtivas dos biocombustíveis: bagaço de cana-de-açúcar. Infoteca-e
LEITAO, R. C.; COSTA, A. G.; CASSALES, A. R.; ALEXANDRE, L. C.; PINHEIRO, F. C. C.; PINHEIRO, G. C.; VIANA, A. F.; SANTAELLA, S. T.; SANTOS, A. B. dos; ROSA, M. de F..
2013
Tipo: Boletim de Pesquisa e Desenvolvimento (INFOTECA-E) Palavras-chave: Digestão anaeróbica; Resíduos lignocelulósicos; Biocombustível de segunda geração; Metano; PPM; Anaerobic digestion; Lignocellulosic waste; Second-generaltion biofuel; Methane; MPP.
Ano: 2013 URL: http://www.infoteca.cnptia.embrapa.br/handle/doc/981748
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Biodegradabilidade anaeróbica dos resíduos provenientes das cadeias produtivas dos biocombustíveis: línter. Infoteca-e
LEITAO, R. C.; COSTA, A. G.; CASSALES, A. R.; ALEXANDRE, L. C.; PINHEIRO, F. G. C.; PINHEIRO, G. C.; VIANA, A. F.; SANTAELLA, S. T.; SANTOS, A. B. dos; ROSA, M. de F..
2013
Tipo: Boletim de Pesquisa e Desenvolvimento (INFOTECA-E) Palavras-chave: Digestão anaeróbia; Resíduos lignocelulosicos; Biocombustível de segunda geração; Metano; PPM; Anaerobic digestion; Lignocellulosic waste; Second-generation biofuel; Methane; MPP.
Ano: 2013 URL: http://www.infoteca.cnptia.embrapa.br/handle/doc/982117
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Carbon and Energy Life-Cycle Assessment for Five Agricultural Anaerobic Digesters in Massachusetts on Small Dairy Farms AgEcon
Morris, Chelsea; Jorgenson, William; Snellings, Sam.
www.ifama.org
Tipo: Journal Article Palavras-chave: Anaerobic digestion; Co-digestion; Dairy operations; Food processing; Greenhouse gas emissions; Net energy gain; Farm Management; Livestock Production/Industries.
Ano: 2010 URL: http://purl.umn.edu/93563
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Carbon conversion efficiency and population dynamics of a marine algae–bacteria consortium growing on simplified synthetic digestate: First step in a bioprocess coupling algal production and anaerobic digestion ArchiMer
Vasseur, Christophe; Bougaran, Gael; Garnier, Matthieu; Hamelin, Jérôme; Leboulanger, Christophe; Le Chevanton, Myriam; Mostajir, Behzad; Sialve, Bruno; Steyer, Jean-philippe; Fouilland, Eric.
Association of microalgae culture and anaerobic digestion seems a promising technology for sustainable algal biomass and biogas production. The use of digestates for sustaining the growth of microalgae reduces the costs and the environmental impacts associated with the substantial algal nutrient requirements. A natural marine algae–bacteria consortium was selected by growing on a medium containing macro nutrients (ammonia, phosphate and acetate) specific of a digestate, and was submitted to a factorial experimental design with different levels of temperature, light and pH. The microalgal consortium reached a maximum C conversion efficiency (i.e. ratio between carbon content produced and carbon supplied through light photosynthetic C conversion and acetate)...
Tipo: Text Palavras-chave: Optimization; Nannochloris; Heterotrophic bacteria; Anaerobic digestion; Bioenergy.
Ano: 2012 URL: http://archimer.ifremer.fr/doc/00085/19642/17419.pdf
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Cassava starch extraction effluent treatment in a one phase tubular horizontal pilot reactor with support medium REA
Kuczman,Osvaldo; Tavares,Maria H. F.; Gomes,Simone D.; Guedes,Luciana P. C.; Grisotti,Geovane.
The cassava starch industries generate a large volume of wastewater effluent that, stabilized in ponds, wastes its biogas energy and pollutes the atmosphere. To contribute with the reversion of this reality, this manipueira treatment research was developed in one phase anaerobic horizontal pilot reactor with support medium in bamboo pieces. The reactor was excavated into the ground and sealed with geomembrane in HDPE, having a volume equal to 33.6 m³ and continuous feeding by gravity. The stability indicators were pH, volatile acidity/total alkalinity ratio and biogas production. The statistical analyses were performed by a completely randomized design, with answers submitted to multivariate analysis. The organical loads in COD were 0.556; 0.670; 0.678 and...
Tipo: Info:eu-repo/semantics/other Palavras-chave: Biodigester; Biogas; Anaerobic digestion; Cassava; Cassava wastewater.
Ano: 2014 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-69162014000600021
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Characterization of brewery waste water and evaluation of its potential for biogas production CIGR Journal
Murunga, Sylvia Injete; Mbuge, Duncan Onyango; Gitau, Ayub Njoroge; Mutwiwa, Urbanus Ndungwa; Wekesa, Ingrid Namae.
The issue of global warming and climate change is strongly receiving public attention and has become a major environmental concern both nationally and internationally. Brewing industries are among the largest consumers of water and the largest source of organic effluent mostly from the brewing, cleaning, and cooling processes which must be treated to allowable levels to reduce environmental pollution. Close to 10 L water is used for every 1 L beer that is brewed, though the amount of water in the final beer is small. A study was undertaken to characterize and assess the variations in the quality of untreated brewery waste water. Samples from different process streams including brewing line, clean in place line and mixing line from two brewing industries in...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Brewery; Physicochemical characterization; Waste water; Pollution; Biodegradable; Anaerobic digestion.
Ano: 2016 URL: http://www.cigrjournal.org/index.php/Ejounral/article/view/3759
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Crude glycerin in anaerobic co-digestion of dairy cattle manure increases methane production Scientia Agricola
Simm,Silvana; Orrico,Ana Carolina Amorim; Orrico Junior,Marco Antonio Previdelli; Sunada,Natália da Silva; Schwingel,Alice Watte; Mendonça Costa,Mônica Sarolli Silva de.
ABSTRACT Anaerobic digestion of crude glycerin (CG) along with animal waste has been an excellent option for increasing the production of biogas and methane to achieve efficiency in the treatment of both residues. This study aimed to evaluate improvements in specific productions of biogas and methane, reductions in solid and fibrous components in substrates prepared with dairy cattle manure and CG (containing 14 % glycerol). With these residues, experimental substrates were prepared and placed in 25 batch digesters. Initial content of the TS in the influent was 4 % and CG was added in increasing doses (0, 5, 10, 15 and 20 % relative to total solids (TS) of the influent). Results were submitted to ANOVA and orthogonal contrasts to assess the effects of...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Glycerol; Biogas; Anaerobic digestion; Solids.
Ano: 2017 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162017000300175
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Economic feasibility of converting cow manure to electricity: A case study of the CVPS Cow Power program in Vermont AgEcon
Wang, Qingbin; Thompson, Ethan; Parsons, Robert L.; Rogers, Glenn.
A case study of the Central Vermont Public Service Corporation (CVPS) Cow Power program examines the economic feasibility for dairy farms to convert cow manure into electricity via anaerobic methane digestion. The study confirms that it is technically feasible to convert cow manure to electricity on dairy farms but the economic returns highly depend on the base electricity price paid by CVPS, premium rate paid by CVPS customers, financial supports from government agencies and other organizations, and sales of the by-products of methane generation. Lessons learned from this program will be useful to other dairy farms and communities interested in converting cow manure into electricity.
Tipo: Conference Paper or Presentation Palavras-chave: Anaerobic digestion; Dairy farms; Renewable energy; Economic feasibility; Vermont.; Agricultural Finance; Consumer/Household Economics; Demand and Price Analysis; Environmental Economics and Policy; Farm Management; Research and Development/Tech Change/Emerging Technologies.
Ano: 2011 URL: http://purl.umn.edu/104564
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Effect of sulphate concentration and sulphide desorption on the combined removal of organic matter and sulphate from wastewaters using expanded granular sludge bed (EGSB) reactors Electron. J. Biotechnol.
Valdés,Freddy; Muñoz,Edmundo; Chamy,Rolando; Ruiz,Gonzalo; Vergara,Christian; Jeison,David.
During the application of anaerobic processes to high sulphate concentration wastewaters, operational problems are expected due to the occurrence of sulphate reduction. Sulphide production reduces effluent quality and may produce inhibition. The application of Expanded Granular Sludge Bed (EGSB) reactors for the combined removal of organic matter and sulphate was studied at different COD/sulphate and 3 values of pH. During the EGSB reactor operation, most of the sulphide remains in the liquid phase reducing effluent quality. The inclusion of a desorption column in the recirculation of the EGSB reactor promotes mass transfer to the gas phase, reducing the sulphide concentration in the liquid phase, significantly decreasing the chemical oxygen demand of the...
Tipo: Journal article Palavras-chave: Anaerobic digestion; EGSB; Sulphate reduction; Sulphide.
Ano: 2006 URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-34582006000400004
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Effects of full-scale substrate pretreatment with a cross-flow grinder on biogas production CIGR Journal
Mönch-Tegeder, Matthias; Lemmer, Andreas; Jungbluth, Thomas; Oechsner, Hans.
The enhancement of the degradation rate of energy crops, agricultural residues and manure by different lab scale pretreatment pathways is shown in previous studies.  In general, the pretreatments resulted in higher degradation efficiencies and an increase in methane yield for lignocellulosic and fibrous biomass.  The major drawback of most of the different pretreatment methods is that either they are not feasible for application in practice or the high energy demand makes them economically inefficient.  The aim of this study was to evaluate the effects of a full-scale mechanical pretreatment with a cross-flow grinder on commonly used energy crops (maize silage, grass silage and rye grain silage) and horse manure. Furthermore, the optimal treatment...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Anaerobic digestion; Biogas production; Mechanical pretreatment; Lignocellulosic materials; Horse manure.
Ano: 2014 URL: http://www.cigrjournal.org/index.php/Ejounral/article/view/2927
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Effects of premixing digested and raw cow slurry for anaerobic digestion OAK
Umetsu, Kazutaka; Takahata, Hidehiko; Kawamoto, Tsunemi; Sato, Tetsuya; 梅津, 一孝; 高畑, 英彦; 川本, 常美; 佐藤, 哲也.
Palavras-chave: Biogas; Methane gas; Premixing; Anaerobic digestion; Cow slurry.
Ano: 1990 URL: http://ir.obihiro.ac.jp/dspace/handle/10322/1636
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Enrichment and acclimation of an anaerobic mesophilic microorganism?s inoculum for standardization of BMP assays. Repositório Alice
STEINMETZ, R. L. R.; MEZZARI, M. P.; SILVA, M. L. B. da; KUNZ, A.; AMARAL, A. C.; TÁPPARO, D. C.; SOARES, H. M..
Appropriate enrichment of anaerobic microorganism?s consortium is crucial for accurate biochemical methane potential (BMP) assays. An alternative method to produce and maintain a mesophilic methanogenic inoculum was demonstrated. Three sources of inoculum were mixed and acclimated for 857 days in order to reach steady conditions (pH = 7.90 ± 0.46; VS/TS > 50%; VFA/alkalinity = 0.16 ± 0.04 gAcetic Acid/gCaCO3 ). Biogas yield >80% was obtained after 70 days of inoculum acclimation in comparison to standard cellulose (>600 mLN/gVS). Methanogen community analysis based on 16S rDNA of the inoculum revealed Archaea concentration of 3 1012 gene copies/g (Methanobacteriales 8 1010; Methanomicrobiales 8 1010; and Methanosarcinales 4 1011 gene copies/g)....
Tipo: Artigo em periódico indexado (ALICE) Palavras-chave: Digestão anaeróbica; Dejeto; Biogás; Anaerobic digestion; Waste treatment.
Ano: 2016 URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1058360
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Estudo interlaboratorial em digestão anaeróbia: relato de atividades e desempenho em 2014. Infoteca-e
STEINMETZ, R. L. R.; KUNZ, A.; AMARAL, A. L. do; TÁPPARO, D. C.; CORREA, J. C.; GASPARETO, T. C.; SOARES, H. S..
2015
Tipo: Documentos (INFOTECA-E) Palavras-chave: Biogás; Biometano; Dejeto; Biodigestor; Digestão anaeróbica; Experiência de laboratório; Animal wastes; Anaerobic digestion; Laboratory experimentation.
Ano: 2015 URL: http://www.infoteca.cnptia.embrapa.br/handle/doc/1030914
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Expanding biogas on UK dairy farms: a question of scale AgEcon
Butler, Allan J.; Hobbs, Phil; Winter, Michael.
Expanding Anaerobic Digestion (AD) in the UK will not only depend upon finding appropriate economic structures to support on‐farm developments but also an appreciation of environmental issues such as less Greenhouse Gas (GHG) emissions; reduced use of artificial fertilisers; and better management of farm wastes. At the core of this paper is the Anaerobic Digestion Analytical Model (ADAM) that examines the economic and environmental impacts of integrating AD into UK farming systems. However, the average dairy farm in the UK is not of sufficient size to enable profitable biogas production. Indeed, farm size, as represented by FBS/FAS data used in ADAM, needs to be scaled by three to four times for a biogas enterprise to break‐even. To boost profitability,...
Tipo: Conference Paper or Presentation Palavras-chave: Anaerobic digestion; Biogas; Dairy farming; Carbon dioxide; Nutrients; Digestate; Environmental Economics and Policy; Farm Management.
Ano: 2011 URL: http://purl.umn.edu/108937
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Experimental evaluation of substrate’s particle size of wheat and rice straw biomass on methane production yield CIGR Journal
Chandra, Ram; Takeuchi, H.; Hasegawa, T.; Vijay, V. K..
This paper examines the effect of particle sizes in substrates on methane production yields of wheat and rice straw biomass without any other applied pretreatment. Anaerobic digestion of three different mean particle size (MPS) substrate of 1.5 mm, 0.75 mm, and 0.30 mm of wheat and rice straw biomass was carried out at 37 oC mesophilic temperature. The observed result revealed that mean particle size of 0.30 mm, and 0.75 mm had increased methane production yield by 4.7%, and 38.7%, respectively, compared to 1.50 mm particle size of wheat straw. However, in case of rice straw substrates the methane production yield was found 7.9%, and 13.0% higher, respectively, for mean particle size of 0.30 mm, and 0.75 mm, compared to 1.50 mm particle size. Mean particle...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Bioenergy; Biogas production from lignocellulosic biomass wheat and rice straw; Biomass particle size; Anaerobic digestion; Methane yield.
Ano: 2015 URL: http://www.cigrjournal.org/index.php/Ejounral/article/view/2844
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