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Tipo do documento Info:eu-repo/semantics/article (18) Journal article (5) Boletim de Pesquisa e Desenvolvimento (INFOTECA-E) (3) Conference Paper or Presentation (2) Documentos (INFOTECA-E) (1) Fôlder / Folheto / Cartilha (INFOTECA-E) (1) Info:eu-repo/semantics/other (1) Journal Article (1) Text (1) Mais... Ano 2020 (2) 2018 (2) 2017 (1) 2016 (5) 2015 (3) 2014 (3) 2013 (5) 2012 (1) 2011 (2) 2010 (2) 2009 (3) 2008 (2) 2006 (1) 2005 (1) 1992 (2) 1990 (1) Mais... País Brazil (17) China (7) Chile (5) Japan (3) United States (3) France (1) Mais... Idioma Inglês (31) Português (5)		Ordenar por:  Relevância Autor Título Ano Registros recuperados: 36 Primeira ... 1 2 ... Última 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 Phosphorus distribution and availability in untreated and mechanically separated biogas digestates Scientia Agricola Bachmann,Silvia; Uptmoor,Ralf; Eichler-Löbermann,Bettina. ABSTRACT Biogas digestates contain valuable nutrients but also have high water contents. Di-gestates were sampled from two different biogas facilities before and after solid-liquid separation and were analyzed with regard to their composition and phosphorus (P) fractions. Additionally, to investigate the P fertilizer effects of these digestates in comparison with undigested slurry or TripleSuper-P (TSP), they were applied in a pot experiment (6 kg soil per pot) in an amount corresponding to 200 mg P per pot in combination with various crops (amaranth, maize, maize + beans mixed cropping, sorghum). A separation of digestates resulted in higher P concentrations of the solid fraction in comparison with the liquid fraction. The proportion of the readily... Tipo: Info:eu-repo/semantics/article Palavras-chave: Phosphorus fractions; Anaerobic digestion; Amaranth; Mixed cropping; Soil enzymes. Ano: 2016 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162016000100009 Treatment of swine manure: case studies in European’s N-surplus areas Scientia Agricola García-González,Maria Cruz; Riaño,Berta; Teresa,Marta; Herrero,Eva; Ward,Alastair James; Provolo,Giorgio; Moscatelli,Giuseppe; Piccinini,Sergio; Bonmatí,August; Bernal,María Pilar; Wiśniewska,Hanna; Proniewicz,Marcin. ABSTRACT In this study, eight different manure treatment plants were monitored. The plants were four on-farm and four centralized treatment plants, all of them at full-scale level. Assessment includes a total of seven pre-treatment and process units as follows: mechanical separation, with and without coagulant and flocculant addition, pasteurization, nitrification-denitrification, anaerobic digestion, and composting. The plants are located in nutrient surplus areas of three European Member States (Spain, Italy and Denmark), the majority of these areas being Nitrate Vulnerable Zones (NVZ). Results presented herein are data collected over a six-month period and comprise performance data of the treatment plants, pathogen indicators (E.coli and Salmonella) and... Tipo: Info:eu-repo/semantics/article Palavras-chave: Greenhouse gas reduction; Manure treatment technologies; Anaerobic digestion; Composting; Nitrification-denitrification. Ano: 2016 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162016000500444 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 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 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 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 Methane Production by the Anaerobic Digestion of Tall Fescue samples pre- and post-ensiling, prepared by Thermal (40°C) or Freeze Drying CIGR Journal McEniry, Joseph; O'Kiely, Padraig. Herbage samples for small-scale batch digestion tests are often dried and milled to provide smaller representative sub-samples for analyses.  Thermal drying, however, can change the chemical composition of a feedstock and these changes may impact on specific CH4 yield.  Consequently, freeze drying is often the preferred system for drying grass samples.  However, additional difficulties are encountered when evaluating silage samples as a result of the loss of volatile compounds during both thermal and freeze drying.  As grass and grass silages are readily used as feedstocks for biogas production, the impact of drying method needs to be considered for herbages pre- and post-ensiling.  This study investigated the effects of thermal (40ºC) and freeze drying on... Tipo: Info:eu-repo/semantics/article Palavras-chave: Agriculture; Biogas grass; Grass silage; Thermal drying; Freeze drying; Anaerobic digestion; Biogas. Ano: 2014 URL: http://www.cigrjournal.org/index.php/Ejounral/article/view/2196 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 Novel system for demand-oriented biogas production from sugar beet silage effluent CIGR Journal Kumanowska, Elzbieta. In recent years, the concept of flexible electricity production from renewable energy sources has gained popularity in the field of renewable energy supply. This study investigated a new system for flexible biogas production in praxis scale biogas plants involving new sugar beet storage processes aiming on the use of produced sugar beet silage effluent. Both processes showed successful ensiling with moderate losses compared to conventional sugar beet storage processes. A clear advantage was found in the use of washed and chopped sugar beet for silage effluent production. Thanks to the high COD-content and high digestibility, the produced silage effluent was applicable for point feeding. The system’s response, observed as an increase in gas production, was... Tipo: Info:eu-repo/semantics/article Palavras-chave: Anaerobic digestion; Biogas production; Full-scale; Demand-oriented; Sugar beet silage effluent; Point feeding. Ano: 2020 URL: http://www.cigrjournal.org/index.php/Ejounral/article/view/5471 Microbial succession within an anaerobic sequencing batch biofilm reactor (ASBBR) treating cane vinasse at 55ºC BABT Ribas,Maria Magdalena Ferreira; Chinalia,Fabio Alexandre; Pozzi,Eloisa; Foresti,Eugenio. The aim of this work was to investigate the anaerobic biomass formation capable of treating vinasse from the production of sugar cane alcohol, which was evolved within an anaerobic sequencing batch biofilm reactor (ASBBR) as immobilized biomass on cubes of polyurethane foam at the temperature of 55ºC. The reactor was inoculated with mesophilic granular sludge originally treating poultry slaughterhouse wastewater. The evolution of the biofilm in the polyurethane foam matrices was assessed during seven experimental phases which were thus characterized by the changes in the organic matter concentrations as COD (1.0 to 20.0 g/L). Biomass characterization proceeded with the examination of sludge samples under optical and scanning electron microscopy. The... Tipo: Info:eu-repo/semantics/article Palavras-chave: Anaerobic digestion; Adaptation phase; Wastewater; Sugar cane; Biofilm; Microbiology. Ano: 2009 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132009000400028 Use of cassava wastewater treated anaerobically with alkaline agents as fertilizer for maize (Zea mays L.) BABT Ribas,Maria Magdalena Ferreira; Cereda,Marney Pascoli; Villas Bôas,Roberto Lyra. The wastewater of the processing of cassava's flour (manipueira) was submitted to the anaerobic treatment in two phases: acidogenic and methanogenic. In the acidogenic phase, the wastewater was stabilized with NaOH (ASH) and with limestone (ASL). After that, both stabilized effluents were treated by a methanogenic reactor. Then, the effluent of the methanogenic reactor was used as fertilizer on maize in the initial growth stage (30 days), cultivated in pots in a greenhouse. The treatments were T1: control without urea addition (only N from soil); T2: NPK (2.2 g of urea with 45% of N); T3: ASH (84 mL.kg soil-1); T4: ASL (102 mL.kg soil-1); T5: double dose ASH (168 mL.kg soil-1) and T6: double dose ASL (204 mL.kg soil-1). Each treatment was composed by 4... Tipo: Info:eu-repo/semantics/article Palavras-chave: Reuse; Manipueira; Anaerobic digestion; Hydroxide sodium; Dolomitic limestone. Ano: 2010 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132010000100007 Morphological study of biomass during the start-up period of a fixed-bed anaerobic reactor treating domestic sewage BABT Lima,Cláudio Antonio Andrade; Ribeiro,Rogers; Foresti,Eugenio; Zaiat,Marcelo. This work focused on a morphological study of the microorganisms attached to polyurethane foam matrices in a horizontal-flow anaerobic immobilized biomass (HAIB) reactor treating domestic sewage. The experiments consisted of monitoring the biomass colonization process of foam matrices in terms of the amount of retained biomass and the morphological characteristics of the cells attached to the support during the start-up period. Non-fluorescent rods and cocci were found to predominate in the process of attachment to the polyurethane foam surface. From the 10th week of operation onwards, an increase was observed in the morphological diversity, mainly due to rods, cocci, and Methanosaeta-like archaeal cells. Hydrodynamic problems, such as bed clogging and... Tipo: Info:eu-repo/semantics/article Palavras-chave: Anaerobic digestion; Biofilm; Domestic sewage; Fixed-bed reactor; Polyurethane foam. Ano: 2005 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132005000600020 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 Performance of an Anaerobic Baffled Reactor (ABR) in treatment of cassava wastewater BJM Ferraz,Fernanda M.; Bruni,Aline T.; Del Bianchi,Vanildo L.. The performance of an anaerobic baffled reactor (ABR) was evaluated in the treatment of cassava wastewater, a pollutant residue. An ABR divided in four equal volume compartments (total volume 4L) and operated at 35°C was used in cassava wastewater treatment. Feed tank chemical oxygen demand (COD) was varied from 2000 to 7000 mg L-1 and it was evaluated the most appropriated hydraulic retention time (HRT) for the best performance on COD removal. The ABR was evaluated by analysis of COD (colorimetric method), pH, turbidity, total and volatile solids, alkalinity and acidity. Principal component analysis (PCA) was carried to better understand data obtained. The system showed buffering ability as acidity decreased along compartments while alkalinity and pH... Tipo: Info:eu-repo/semantics/article Palavras-chave: Anaerobic baffled reactor (ABR); Anaerobic digestion; Cassava wastewater; COD removal; Principal component analysis (PCA). Ano: 2009 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822009000100007 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 Registros recuperados: 36 Primeira ... 1 2 ... Última

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