Consulta: subjectFacets:"Biogas"
Registros recuperados: 59
Data/hora: 09/06/2024 18:28:44

Uso de levaduras y fumarato para disminuir la metanogénesis en la fermentación de alfalfa.
Provedor de dados: 32
Autores: Báez Pérez, José Luis.
Se realizaron tres experimentos en biorreactores acoplados a trampas de gas para evaluar el efecto de Saccharomyces cerevisiae y fumarato de sodio en la fermentación in vitro de alfalfa. En el primero se evaluó la fermentación de alfalfa en medio de cultivo glucosa, celobiosa, almidón y fluido ruminal (GCAFR) usando trampas de gas con agua, solución salina ácida y solución de NaOH. Se midió producción de biogás, CH4, CO2, pH y bacterias totales (BT). El diseño experimental fue completamente al zar con arreglo factorial 2 x 3, y tres repeticiones por tratamiento. En el segundo experimento se evaluó el efecto de Yea sacc®, Procreatin 7® y Diamond V XP® en la fermentación in vitro de alfalfa. Se midió producción de CH4, ácidos grasos volátiles (AGV),...
Palavras-chave: Fermentación ruminal; Biogás; CH4; Saccharomyces cerevisiae; Fumarato de sodio; Rumen fermentation; Biogas; Sodium fumarate; Ganadería; Doctorado.
Ano: 2010
URL: http://hdl.handle.net/10521/85

Uso de levaduras y fumarato para disminuir la metanogénesis en la fermentación de alfalfa.
Provedor de dados: 32
Autores: Báez Pérez, José Luis.
Se realizaron tres experimentos en biorreactores acoplados a trampas de gas para evaluar el efecto de Saccharomyces cerevisiae y fumarato de sodio en la fermentación in vitro de alfalfa. En el primero se evaluó la fermentación de alfalfa en medio de cultivo glucosa, celobiosa, almidón y fluido ruminal (GCAFR) usando trampas de gas con agua, solución salina ácida y solución de NaOH. Se midió producción de biogás, CH4, CO2, pH y bacterias totales (BT). El diseño experimental fue completamente al zar con arreglo factorial 2 x 3, y tres repeticiones por tratamiento. En el segundo experimento se evaluó el efecto de Yea sacc®, Procreatin 7® y Diamond V XP® en la fermentación in vitro de alfalfa. Se midió producción de CH4, ácidos grasos volátiles (AGV),...
Palavras-chave: Fermentación ruminal; Biogás; CH4; Saccharomyces cerevisiae; Fumarato de sodio; Rumen fermentation; Biogas; Sodium fumarate; Ganadería; Doctorado.
Ano: 2010
URL: http://hdl.handle.net/10521/85

Emisiones de metano generadas por excretas de animales de granja y contenido ruminal de bovino.
Provedor de dados: 32
Autores: Ramírez Hernández, Irma Fabiola.
Las emisiones de metano (CH4) de las actividades ganaderas, como un gas de efecto invernadero, son estimadas para el desarrollo de inventarios. Sin embargo el aprovechamiento de la producción del CH4 a partir de excretas de animales rumiantes y no rumiantes, para la generación de energía, requiere de establecer condiciones de temperatura y humedad para eficientar la mayor producción de este gas, compuesto del biogás producido por la actividad microbiana. En este estudio, se desarrollaron cuatro experimentos para cuantificar la producción de CH4, con la fermentación controlada, en un sistema biorreactor-trampa. En el 1er experimento, se compararon diferentes excretas de animales rumiantes: estiércol de ganado lechero y en engorda, excretas de cabras y...
Palavras-chave: Biogás; Metano; Excretas; Rumiantes; Fermentación; Biogas; Metane; Manure; Ruminants; Fermentation; Doctorado; Hidrociencias.
Ano: 2010
URL: http://hdl.handle.net/10521/282

Hydrothermal multivariable approach: Full-scale feasibility study
Provedor de dados: 69
Autores: Pérez-Elvira,Sara I; Fernández-Polanco,Fernando; Fernández-Polanco,María; Rodríguez,Pilar; Rouge,Philippe.
A process configuration combining thermal hydrolysis (TH) and anaerobic digestion (AD) of sludge has been studied with the objective of analysing the feasibility of the technology for full scale installations. The study has been performed through pilot scale experiments and energy integration considerations, and a scheme of the most profitable option is presented: thermal hydrolysis unit fed with 7% total solids (TS) secondary sludge, anaerobic digestion of the hydrolysed sludge together with fresh primary sludge, and a cogeneration unit to produce green electricity and provide hot steam for the thermal hydrolysis process. From a technical and practical point of view, the process scheme proposed is considered to be feasible. Based on the results of the...
Tipo: Journal article
Palavras-chave: Anaerobic digestion; Biogas; Sludge; Sludge properties; Thermal hydrolysis.
Ano: 2008
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-34582008000400007

Performance of biofilm carriers in anaerobic digestion of sisal leaf waste leachate
Provedor de dados: 69
Autores: Mshandete,Anthony Manoni; Björnsson,Lovisa; Kivaisi,Amelia Kajumulo; Rubindamayugi,Mugassa Steven Thomas; Mattiasson,Bo.
Three methanogenic biofilm bioreactors were studied to evaluate the performance of three types of carriers. The carrier material were consisted of sisal fibre waste, pumice stone and porous glass beads, and the bioprocess evaluated was the methanogenesis anaerobic digestion of sisal leaf waste leachate. Process performance was investigated by increasing the organic loading rate (OLR) step-wise. The best results were obtained from the bioreactor packed with sisal fibre waste. It had the highest chemical oxygen demand (COD) removal efficiencies in the range of 80-93% at OLRs in the range of 2.4-25 g COD L-1d-1. The degradation pattern of volatile fatty acids (VFAs) showed that the degradation of propionate was limiting at higher OLRs. The stable pH and...
Tipo: Journal article
Palavras-chave: Biogas; Methanogenesis; Packed-bed bioreactors; Packing media.
Ano: 2008
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-34582008000100009

Selection of sulfur oxidizing bacterium for sulfide removal in sulfate rich wastewater to enhance biogas production
Provedor de dados: 69
Autores: Kantachote,Duangporn; Charernjiratrakul,Wilawan; Noparatnaraporn,Napavarn; Oda,Kohei.
Sulfur oxidizing bacteria (SOB) were isolated and tested in order to remove sulfide from high sulfate wastewater to reduce the amount of hydrogen sulfide (H2S) in the produced biogas. A promising SOB isolate, designated as isolate T307, was selected due to its best sulfide removal (86.7%) in the effluent of a sulfate reduction reactor (SRR) over a 24 hrs incubation. The bacterium was able to grow better as a mixotroph (yeast extract as a carbon source) than as a chemolithoautotroph. In addition, as a heterotroph, the bacterium grew well with yeast extract and peptone. Based on partial 16S rRNA gene sequence, the isolated T307 was an Alcaligenes sp. and was able to convert most of sulfide species (total sulfide: TS; dissolved sulfide: DS and H2S) into...
Tipo: Journal article
Palavras-chave: Biodesulfurization; Biogas; Effluent from a sulfate reduction reactor; Sulfide.
Ano: 2008
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-34582008000200013

Anaerobic biodigestion of pigs feces in the initial, growing and finishing stages fed with diets formulated with corn or sorghum
Provedor de dados: 70
Autores: Miranda,Adélia P.; Lucas Junior,Jorge de; Thomaz,Maria C.; Pereira,Gener T.; Fukayama,Ellen H.
The objective of this study was to evaluate the quality and the production of biogas and biofertilizer obtained from biodigester supplied with pig feces in the initial, growing and finishing stages, fed with diets formulated based on corn or sorghum. Twenty bench biodigesters were used with hydraulic retention time of 30 days and daily loads that contained 4 to 6% of total solids (TS) and 3.6 to 5.2% of volatile solids (VS). In the effluent of the biodigesters, mean levels of TS were observed ranging between 1.6 and 2.0% and of VS between 1.2 and 1.6%. The mean reductions of TS were 57.7 to 64.7% and of VS from 61.7 to 69.0%, and there was only difference in the finishing phase, in which the major averages reductions were produced by the biodigesters...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Biodigesters; Biogas; Pig feces; Environmental impact.
Ano: 2012
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-69162012000100006

Cellulase effect on anaerobic digestion of maize silage under discontinuous operation
Provedor de dados: 70
Autores: Oliva-Merencio,Deny; Pereda-Reyes,Ileana; Schimpf,Ulrike; Koehler,Stefan; Silva,Ariovaldo J. da.
ABSTRACT This paper studied the effect of adding an enzyme (ellulose) on anaerobic digestion of maize silage. We compared materials at chopping lengths of 8 mm (MSL), 4mm (MSS) and natural size (Ms) under a mesophilic and discontinuous operation (batch process). Hence, we found the process to be significantly influenced by particle size. Moreover, the ellulose addition did not significantly impact biogas production after a 35-day digestion period. Ms and MSS displayed an improved response to all variables when compared with MSL and MSL+C, with significant differences. Studies on the refractory fraction at infinite time (R0) have demonstrated that the lowest values correspond to Ms and MSS (0.122 and 0.155, respectively). The Kinetic approach and the...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Ellulose; Silage; Biogas; Kinetics; Biodegradability.
Ano: 2015
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-69162015000500951

Potential of biogas production from swine manure supplemented with glycerine waste
Provedor de dados: 70
Autores: Konrad,Odorico; Koch,Fabio F.; Lumi,Marluce; Tonetto,Jaqueline F.; Bezama,Alberto.
In this study, was studied the biogas generation from swine manure, using residual glycerine supplementation. The biogas production by digestion occurred in the anaerobic batch system under mesophilic conditions (35°C), with a hydraulic retention time of 48 days. The experiment was performed with 48 samples divided into four groups, from these, one was kept as a control (without glycerin) and the other three groups were respectively supplemented with residual glycerine in the percentage of 3%, 6% and 9% of the total volume of the samples. The volume of biogas was controlled by an automated system for reading in laboratory scale and the quality of the biogas (CH4) measured from a specific sensor. The results showed that the residual glycerine has high...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Biogas; Residual glycerin; Swine manure; Renewable energy.
Ano: 2014
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-69162014000500004

USE OF INOCULUM IN BIODIGESTERS WITH CATTLE MANURE UNDER CONVENTIONAL AND ORGANIC PRODUCTION SYSTEMS
Provedor de dados: 70
Autores: Paes,Juliana L.; Alves,Thaís B. S.; Silva,Leonardo D. B. da; Marques,Anieli de S.; Dias,Valentina R. S.
ABSTRACT One way of making livestock farming a more sustainable practice is to raise cattle organically. However, regardless of the production system, there is a generation of residues that can be converted into energy resources using biodigesters. This study aimed to evaluate the addition of inoculum in the anaerobic biodigestion of cattle manure under organic (OPS) and conventional production systems (CPS) in an Indian model biodigester. The physicochemical (pH, EC, TS, VS, DBO, and COD) and microbiological characteristics of the affluent and effluent, as well as the production, potential, and qualitative characteristics of the biogas, were evaluated. CPS showed higher reductions in TS, VS, BOD, and COD than OPS, with the highest effect of biogas...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Anaerobic biodigestion; Biogas; Starting point; Biofertilizer potential.
Ano: 2020
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-69162020000200146

ANAEROBIC DIGESTION AND CO-DIGESTION OF POULTRY LITTER SUBMITTED TO DIFFERENT REUSES
Provedor de dados: 70
Autores: Vicente Jr.,Donizete J.; Costa,Monica S. S. de M.; Costa,Luiz A. M.; Pereira,Dercio C.; Santos,Francielly T. dos.
ABSTRACT Considering the constant increase in the waste generation from poultry and pigs’ husbandries, the main contributions of this study were to verify the potential of biogas production through the anaerobic digestion and co-digestion of the residues generated by these two activities, as well as to highlight the recovery of the nutrients contained in the obtained digestate. The wastes used were poultry litters after six, seven and eight production lots, as well as the sifted wastewater from one Piglets Producer Unit (PPU). Higher biogas production (p &lt;0.05) was observed in the treatments in which anaerobic codigestion was used with the swine wastewater (SW): 0.179; 0.158 and 0.117 m3 per kg of total solids (TS) added for poultry litters with six,...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Agroindustry; Digestate; Biogas; Waste treatments.
Ano: 2018
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-69162018000600961

BIOGAS PRODUCTION IN DAIRY CATTLE SYSTEMS, USING BATCH DIGESTERS WITH AND WITHOUT SOLIDS SEPARATION IN THE SUBSTRATES
Provedor de dados: 70
Autores: Anjos,Isis Dos; Toneli,Juliana T. C. L.; Sagula,Alex L.; Lucas Junior,Jorge de.
ABSTRACT This research aimed to evaluate the biogas production during the anaerobic biodigestion process of dairy cattle manure, with and without solids separation. Sixteen biodigesters of the batch type were used, each one with 2L of capacity, supplied with manure in four different conditions: (1) pure manure, after washing the floors of the free stall system; (2) manure after the solids separator; (3) manure after the solids separator and sand decanter and (4) manure with the solid retained in separator solids, dissolved in water. The hydraulic retention time was of 196 days. The highest reductions of volatile solids (VS) were obtained for the biodigesters supplied with manure that went through some process of solids separation. The highest potential of...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Biogas; Biodigester; Manure; Dairy cattle; Solid separation.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-69162017000300426

Cassava starch extraction effluent treatment in a one phase tubular horizontal pilot reactor with support medium
Provedor de dados: 70
Autores: 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

OPTIMIZATION OF ANAEROBIC TREATMENT OF CASSAVA PROCESSING WASTEWATER
Provedor de dados: 70
Autores: Fleck,Leandro; Tavares,Maria H. F.; Eyng,Eduardo; Andrade,Minéia A. de M. de; Frare,Laercio M.
ABSTRACT The main contribution of this research is to optimize the operating conditions of an anaerobic reactor applied to the treatment of wastewater from cassava starch production. A 20-L anaerobic reactor was used, operating in a batch system, with temperature control. Temperature and inoculum total volatile solids (TVSi) were controlled for evaluation of effects on the removals of chemical oxygen demand (COD) and reactor total volatile solids (TVSr) by means of a Central Composite Rotational Design (CCRD). Twelve trials were analyzed simultaneously by the desirable function approach. The higher COD removal (96.82%) was obtained at 42 °C and 12.0% TVSi. The largest TVSr removal (69.31%) was registered at 45 °C and 10.0% TVSi. Equations representative of...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Anaerobic reactor; Biogas; Desirability function; Mathematical modeling.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-69162017000300574

METHANE PRODUCTION FROM CASSAVA STARCH WASTEWATER IN PACKED-BED REACTOR AND CONTINUOUS FLOW
Provedor de dados: 70
Autores: Araujo,Izabela R. C.; Gomes,Simone D.; Tonello,Tamiris U.; Lucas,Shaiane Dal'Maso; Mari,Angelo G.; Vargas,Rodrigo J. de.
ABSTRACT The aim of this study was to evaluate the behavior of an anaerobic reactor of packed-bed and continuous flow, in relation to the biogas and methane production and the removal of organic load, from the wastewater of cassava starch extraction. For this purpose, were tested, in a reactor with a useful volume of 2.82 L and support mean of polypropylene filled with polyethylene foam, the organic loading rate (OLR) of 2.5, 5.0, 8.0 and 10.0 g L-1d-1. It was evaluated the removal of COD, the pH, the VA/TA ratio, the biogas and the methane production. It was concluded from this study that it is possible to produce biogas with methane percentages higher than 80% (maximum) and remove the organic load more than 90% under the tested conditions. In relation to...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Methanogenic reactor; Anaerobic biodigestion; Biogas.
Ano: 2018
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-69162018000200270

Anaerobic biodigestion of manure from finishing pig supplemented with ractopamine over different periods
Provedor de dados: 70
Autores: Santos,Tânia M. B. dos; Trevizan,Paula S. F.; Xavier,Cristiane A. N.; Kiefer,Charles; Ferraz,André L. J.
ABSTRACT This study aimed to evaluate the efficiency of anaerobic digestion and biogas production by manure from pig supplemented with ractopamine over different periods. We used manure of 50 finishing pigs according to the following diets: without supplementation and supplemented with 20-ppm ractopamine during 7, 14, 21, 28 and 35 days pre-slaughter. Continuous bench biodigesters were used in the experiment. We measured biogas production and made analyses of total (TS) and volatile solids (VS), pH, total phosphorus (total P), total nitrogen (total N) and ammoniacal nitrogen (ammoniacal N) in samples of manure, affluent and effluent from biodigesters. The pH and ammoniacal N as indicator parameters of the process balance and stability were satisfactory....
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Β-adrenergic; Biogas; Ractopamine hydrochloride; Environmental impact and nutrient partitioning.
Ano: 2016
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-69162016000300399

Quali/quantitative characterization of biogas produced in batch digesters supplied with six distinct substrates
Provedor de dados: 70
Autores: Galbiatti,João A.; Caramelo,Anaira D.; Chiconato,Denise A.; Araújo,José R.; Girardi,Eliana A. B.
The present research was carried out at the DER/FCAV, São Paulo State University - Brazil, with the purpose of analyzing the quantity and quality of biogas produced by six types of substrates. The substrates used in the anaerobic digestion were characterized as: 1- Litter of broiler (LB); 2- Grinded broiler litter (GBL); 3- Broiler litter with wood shavings (BLWS); 4- Grinded broiler litter with wood shavings (GBLWS); 5- Broiler litter with peanut hulls (BLPH); 6- Grinded broiler litter with peanut hull (GBLPH). It was concluded from the collected data that: the (GBL) substrate showed a superior biogas accumulated production in relation to the other substrates, while the BLWS presented an inferior accumulated production; the grinded substrates showed...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Biogas; Anaerobic; Organic residue; Digesters.
Ano: 2011
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-69162011000400017

DAIRY CATTLE BIOGAS USAGE IN MICROTURBINES FOR ENERGY GENERATION AND THERMAL EXPLOITATION
Provedor de dados: 70
Autores: Hirano,Marcio Y.; Silva,Celso L. da.
ABSTRACT The increase in confined cattle breeding reflects the modernization and automation of farming, which has significantly intensified in recent years and caused an increase in the energy demand of rural properties. This study investigated the use of biogas generated from dairy cattle manure confined in gas microturbines on a farm to generate electricity and the energy use of exhaust gases. At the end of the study, 6,195 to 16,077 kWh month-1 of electricity was obtained, which corresponds to 43.3% of the property's self-sufficiency energy demand. By performing an exhaust gas energy exploitation, between 6.8 and 13.6 m3 day-1 of water heated to 368 K can be produced, or between 11,880 and 23,661 kWh month-1 of cooling capacity can be obtained using a...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Energy exploitation; Biogas; Dairy cattle; Microturbine.
Ano: 2018
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-69162018000400526

ENERGY POTENTIAL OF BIOGAS FROM PIG FARMS IN THE STATE OF MINAS GERAIS, BRAZIL
Provedor de dados: 70
Autores: Sousa,Izabelle de P.; Rosa,André P.; Borges,Alisson C.; Renato,Natália dos S.
ABSTRACT Pig farming stands out as an alternative for decentralized electrical energy production from the use of biogas energy. However, its use is still limited. Thus, this study aimed to estimate and map the biogas production, as well as determine the electric power originated by the use of biogas produced in covered lagoon biodigester from pig farms of different sizes in the state of Minas Gerais, Brazil. The research was based on data provided by the Instituto Mineiro de Agropecuária (IMA). Three forms of electric power were estimated, as follows: (i) total, (ii) current, and (iii) installed. They were estimated from the volume of manure generated at each development stage of the animals. The total electric power corresponded to 31 MW, while the...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Anaerobic digestion; Covered lagoon biodigester; Energy recovery; Biogas; Pig farming.
Ano: 2020
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-69162020000300396

Anaerobic co-digestion of crude glycerin and starch industry effluent
Provedor de dados: 70
Autores: Larsen,Andrea C.; Gomes,Benedito M.; Gomes,Simone D.; Zenatti,Dilcemara C.; Torres,Douglas G. B.
The Brazil's Biodiesel Production and Use Program introduces biodiesel in the Brazilian energy matrix, bringing along the perspective of a growth of the glycerin offer, co-product generated in the proportion of 10 kg for each 100 L of biodiesel. The aim of this study was to evaluate the addition of crude glycerin in the anaerobic digestion of cassava starch industry effluent (cassava wastewater), in a horizontal semi-continuous flow reactor of one phase in laboratory scale. It was used a reactor with a 8.77 L of useful volume, a medium support for corrugated conduit of polyvinyl chloride (PVC), temperature of 261 ºC, fed with cassava wastewater and glycerin, with hydraulic detention times of 4 and 5 days and increasing volumetric organic load of 3.05;...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Cassava wastewater; Biodiesel; Biogas; Glycerol.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-69162013000200013

EFFECT OF ORGANIC LOAD AND ALKALINITY ON DAIRY WASTEWATER BIOMETHANATION
Provedor de dados: 70
Autores: Kispergher,Eduardo M.; D'Aquino,Camila A.; Costa Junior,Luis C. da; Mello,Thiago C. de; Weinschutz,Regina; Mathias,Alvaro L.
ABSTRACT: This study aimed to evaluate the effect of variations in organic load (hydraulic retention times - HRTs: from 2 to 0.5 day) and in alkalinity (NaHCO3 from 4,000 to 1,000 mg.L−1) on methane production. Biomass of sewage sludge was inoculated and stabilized on 1" polypropylene rings. The rings were immersed in the liquid phase (8.41 L) of an upflow anaerobic filter reactor (12.22 L). A solution of 5 g of whole milk powder per liter was used to simulate effluent from the dairy industry. Process effectiveness was measured by chemical oxygen demand reduction, biogas production, and biogas methane content. Biogas production started at a 2-day HRT and synthetic effluent alkalinization with 4,000 mg.L−1 NaHCO3. The best operation condition was at 1-day...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Dairy industry; Biofilter; Hydraulic retention time; Alkalinity; Biogas.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-69162017000400820

ECONOMIC AND FINANCIAL VIABILITY OF DIGESTER USE IN CATTLE CONFINEMENT FOR BEEF
Provedor de dados: 70
Autores: Montoro,Stela B.; Santos,David F. L.; Lucas Junior,Jorge de.
ABSTRACT This research analyzes the economic and financial feasibility of implementing a biodigester for confinement of beef cattle on a farm located in the State of São Paulo, through the approach of discounted cash flow. The anaerobic digestion technology arouses interest, due to its advantages with the generation of electricity and the pollution reduction of water resources, soil and air, from the biogas and bio-fertilizer production, high value-added products to cattle raising. It was verified that the treatment system of cattle manure with biodigesters generate biogas and fertilizer as revenue, with free cash flows that enable a return on investment in 3.8 years and return an IRR 26.40% and an MIRR of 10.69%; all above than the minimum rate of...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Biogas; Biofertilizer; Cattle; Discounted cash flow.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-69162017000200353

Enhancing the analytical capacity for biogas development in Brazil: assessment of an original measurement system for low biogas flow rates out of agricultural biomass residues
Provedor de dados: 70
Autores: Konrad,Odorico; Bezama,Alberto B.; Prade,Thomas; Backes,Gladis M.; Oechsner,Hans.
ABSTRACT This study presents a comparison of two systems for measuring low-flow biogas production rates. Grass silage was used as substrate in the experiment. Measurements were made by using (a) manual readings and (b) an automated system. The automated system proved to be efficient as it allowed readings of the biogas flow rates in real time. Results were stored in a computerized system with a safe access interface to download the recorded data at any desired moment. Furthermore, the systems also minimized the error rate in comparison to the manual method.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Automation; Biogas; Biogas meter; Biogas volume.
Ano: 2016
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-69162016000500792

Methanogenic and fertilizing potential of aquaculture waste: towards freshwater farms energy self‐sufficiency in the framework of blue growth
Provedor de dados: 5
Autores: Ndiaye, Ndeye Aida; Maiguizo-diagne, Halima; Diadhiou, Hamet Diaw; Ndiaye, Waly Ndianco; Diedhiou, Fulgence; Cournac, Laurent; Gaye, Mohamed Lamine; Fall, Saliou; Brehmer, Patrice.
he fisheries sector, particularly aquaculture, is a fundamental source of nutrition for humans, particularly in developing countries. The modern development of fish farming requires energy for production systems. This study investigates the potential of using organic wastes derived from fish fattening to produce on‐farm energy through the process of methanization. Oreochromis niloticus faeces methanogen potential was determined with (IFF) and without (UIFF) methanizer microbial inoculum. At the end of the manure methanation trials, the resulting digestates were tested as organic fertilizers for agriculture. The tests showed that inoculated fish faeces had faster biogas kinetics production compared with uninoculated fish faeces. In both cases, the produced...
Tipo: Text
Palavras-chave: Biogas; Digests; Energy recovery; Fish faeces; Methanation; Sustainable science.
Ano: 2020
URL: https://archimer.ifremer.fr/doc/00588/70033/70230.pdf

開発途上国における家畜糞尿からのバイオガス生産とその展望
Provedor de dados: 19
Autores: Ishibashi, Kenichi; Day, Donald L; Zhang, Ruihong; Hironaka, Kazunori; Koaze, Hiroshi.
Fuel, feed, and fertilizer are critical resources that often must be imported. Especially for agriculturalists in developing countries, the high cost of these resources and high interest rates create significant economic problems.     These economic problems, the decreased availability of renewable sources of fuel, and the need for pollution control and fertilizer conservation have forced people to look for new sources of these resources. Methane fermentation technology is one alternative that has received widespread interest in developing countries because it converts locally available byproducts into fuel, feed, and fertilizer. Through a microbial process, agricultural waste material and byproducts can be converted into valuable products. This conversion...
Palavras-chave: Biogas; Anaerobic digestion; Livestock waste; Digester tank; Economics; バイオガス; 嫌気性消化; 家畜糞尿; 消化槽; 経済性.
Ano: 1992
URL: http://ir.obihiro.ac.jp/dspace/handle/10322/1884

乳牛スラリーの中温嫌気発酵における発酵温度の影響
Provedor de dados: 19
Autores: Umetsu, Kazutaka; Takahata, Hidehiko; Kawamoto, Tsunemi; 梅津, 一孝; 高畑, 英彦; 川本, 常美.
Palavras-chave: Biogas; Methane gas; Anaerobic digestion; Dairy slurry.
Ano: 1992
URL: http://ir.obihiro.ac.jp/dspace/handle/10322/1694

Current status and prospects of biomass technologies in Japan Use of bioethanol
Provedor de dados: 19
Autores: Nishizaki, Kunio; 西崎, 邦夫.
2005年8月4日とかちプラザ・レインボーホールで開催､日本ユネスコ国内委員会主催の帯広農村開発教育国際セミナー(OASERD)国際連合ユネスコアジア太平洋地域教育開発計画事業(APEID)シンポジウム「地球にやさしい農業をめざして :　資源リサイクルを利用した持続可能な食糧生産－」講演資料
Palavras-chave: Biomass; Biofuel; Biogas; BDF(Bio Diesel Fuel); Bioethanol.
Ano: 2005
URL: http://ir.obihiro.ac.jp/dspace/handle/10322/1895

Field application of anerobically co-digested dairy manure and food processing wastes for a winter wheat cultivar Hokushin
Provedor de dados: 19
Autores: 梅津, 一孝; 山縣, 真人; 岸本, 正; 谷, 昌幸; 林, 峰之; 三崎, 卓也.
The purpose of this study was to evaluate the effect of anerobically co-digested dairy manure and food processing wastes as an organic fertilizer, and to investigate the changes in soil nitrogen and grain yield of winter wheat (Hokushin) comparing digested dairy manure with chemical fertilizer. By the incubation test, it was clear that the NH4-N was almost converted into the NO3-N for four weeks. Over the period of 101 days, 15% of inorganic N was accumulated in the soil. Between grain yields where co-digested dairy manure and chemical fertilizer were applied, there were no significant difference, but protein contents in grain were higher in co-digested manure applied than chemical fertilizer one (p&lt;0.05).
Palavras-chave: バイオガス; メタン; 消化液; 圃場還元; 秋蒔き小麦; Biogas; Methane; Digested slurry; Field application; Winter wheat.
Ano: 2003
URL: http://ir.obihiro.ac.jp/dspace/handle/10322/4513

Effects of premixing digested and raw cow slurry for anaerobic digestion
Provedor de dados: 19
Autores: 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

Obtención de gas combustible mediante la bioconversión del alga marina Ulva lactuca
Provedor de dados: 20
Autores: Díaz Rebollido, P.M.
Uno de los biocombustibles más comunes y conocidos es el biogás, el cual puede ser obtenido mediante la bioconversión de diferentes materias orgánicas. Aunque poco conocido en nuestro país, también se puede obtener biogás partiendo de las algas marinas mediante un adecuado manejo, sin que constituya un peligro ecológico. La biomasa de las algas se puede considerar como un sustrato comparable con los residuos agrícolas y residuales urbanos en el campo de la biometanización. El presente trabajo tiene como objetivo obtener gas combustible mediante la bioconversión del alga marina Ulva lactuca. Para esto, se determinó la composición físico – química de las algas y se diseñó un sistema de digestión para obtener biogás a nivel de laboratorio. Se logró obtener...
Tipo: Journal Contribution
Palavras-chave: Algae; Biogas; Experimental research; Algae; Biogas; Http://aims.fao.org/aos/agrovoc/c_258; Http://aims.fao.org/aos/agrovoc/c_9262.
Ano: 2010
URL: http://hdl.handle.net/1834/3665

Expanding biogas on UK dairy farms: a question of scale
Provedor de dados: 31
Autores: 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

Potentieller Beitrag der Landwirtschaft zur Verminderung der Treibhausgasemissionen in Deutschland
Provedor de dados: 31
Autores: Wegener,   Jens Karl; Lucke,   Wolfgang; Heinzemann,   Jorg.
In 2002, the German agricultural sector contributed 8.7 % of the total national green house gas emissions. The main sources were animal digestion, manure management and agricultural soils. From the technical point of view, the manure management has the biggest potential of green house gas reduction by using biogas technology. Thereby methane emission from manure, which otherwise had been emitted into the atmosphere, can be recaptured and used to substitute fossil fuels. Regarding the whole output of manure from cattle and swine in Germany, the emission reduction is 56 Mio. t CO2-equivalent. This amount is equivalent to 4.5% of the emissions in 1990/95 for the Kyoto protocol. Regarding the biomass potential which is technically feasible at the moment, the...
Tipo: Journal Article
Palavras-chave: Biogas; EU-emission trading; Kyoto protocol; Agriculture; Germany; Environmental Economics and Policy; Resource /Energy Economics and Policy.
Ano: 2006
URL: http://purl.umn.edu/97186

Modelling regional maize market and transport distances for biogas production in Germany
Provedor de dados: 31
Autores: Delzeit,   Ruth; Britz,   Wolfgang; Holm-Muller,   Karin.
Our location model aims to simulate location decisions for biogas plants based on profit maximisation to generate regional demand functions for maize and corresponding plant size structure and transport distances. By linking it with an agricultural sector model we derived regional maize markets. Comparing results for the REA with a scenario applying uniform per unit subsidy and producing the same energy, we see higher subsidy costs with the REA but lower transportation distances.
Tipo: Conference Paper or Presentation
Palavras-chave: Biogas; Environmental effects; Transport costs; Choice of location; Agricultural Finance; Environmental Economics and Policy.
Ano: 2009
URL: http://purl.umn.edu/53258

PERSPECTIVAS DE OBTENCIÓN DE ENERGÍA RENOVABLE DE LA BIOMASA DEL ESTIÉRCOL DEL GANADO LECHERO EN LA REGIÓN CENTRO-SUR DE CHIHUAHUA
Provedor de dados: 31
Autores: Rivas Lucero,   Bertha Alicia; Zuniga Avila,   Gabriel; Saenz Solis,   Jorge Iram; Guerrero Morales,   Sergio; Segovia Lerma,   Armando; Morales Morales,   Hugo Armando.
Currently almost all energy is provided by fossil fuels that increase greenhouse gas emissions contributing to global warming. These emissions can be reduced with the use of renewable energy produced from biomass such a livestock manure. The manure is raw material for production of electricity and thermal energy. Anaerobic digestion of waste can reduce emissions by capturing methane, a greenhouse gas produced by waste in facilities large and small scale. The South Central region of the state of Chihuahua has the potential for renewable energy production from biomass and waste are approximately 58,000 head of cattle, valuing a daily output of 2,900 m3 of sewage and 10,000 m3 of waste water can cause environmental problems. The estimated biogas production...
Tipo: Article
Palavras-chave: Anaerobic digester; Biogas; Biomass; Renewable energy.; Agribusiness.
Ano: 2012
URL: http://purl.umn.edu/120496

Real option models for simulating digester system adoption on livestock farms in Emilia-Romagna
Provedor de dados: 31
Autores: Bartolini,   Fabio; Gallerani,   Vittorio; Viaggi,   Davide.
Innovation and new technology adoption represent two central elements for the enterprise and industry development process in agriculture. The objective of this paper is to develop a farm-household model able to simulate the impacts of uncertainty in SFP, the selling price of energy and agricultural product prices parameters on the adoption of methane digester for biogas production. The model implemented is based on a real option approach that includes investment irreversibility and stochasticity in relevant parameters. The results show the relevance of uncertainty in determining the timing of adoption and emphasise the importance of predictability as a major component of policy design.
Tipo: Conference Paper or Presentation
Palavras-chave: Real options; Methane digester; Biogas; Investment; Uncertainty; Agricultural and Food Policy; Farm Management; Land Economics/Use.
Ano: 2010
URL: http://purl.umn.edu/61112

CO2-VERMEIDUNGSKOSTEN DER STROM- UND WÄRMEPRODUKTION AUS BIOGAS
Provedor de dados: 31
Autores: Scholz,   Lukas; Meyer-Aurich,   Andreas; Kirschke,   Dieter.
In einer Studie wurden die volkswirtschaftlichen Kosten verschiedener Produktionsverfahren und Szenarien der Strom- und Wärmeproduktion aus Biogas auf der Basis von Mais und Rindergülle untersucht. Gemessen an alternativen Maßnahmen, verursacht die staatliche Förderung der Bioenergieproduktion aus Biogas, durch das Erneuerbare-Energien-Gesetz (EEG), hohe volkswirtschaftliche Kosten. Die CO2-Vermeidungkosten variieren zwischen 289 und 691 €/t CO2äq in den untersuchten Produktionsverfahren und Szenarien. Der Subventionsaufwand beläuft sich auf 310 bis 596 €/t CO2äq.
Tipo: Conference Paper or Presentation
Palavras-chave: Bioenergie; Biogas; Ökonomische Analyse; CO2-Vermeidungskosten; Agribusiness; Agricultural and Food Policy; Agricultural Finance; Demand and Price Analysis; Environmental Economics and Policy; Farm Management; Financial Economics.
Ano: 2011
URL: http://purl.umn.edu/114736

AUSWIRKUNGEN DER NOVELLIERUNG DES ERNEUERBARE ENERGIEN-GESETZES AUF DIE LANDWIRTSCHAFT IN DEUTSCHLAND
Provedor de dados: 31
Autores: Goemann,   Horst; Kreins,   Peter; Muench,   Julia; Delzeit,   Ruth.
A2_2
Tipo: Conference Paper or Presentation
Palavras-chave: Erneuerbare-Energien-Gesetz; EEG 2009; Energiemais; Agrarsektormodell; Landnutzung. RAUMIS; Gülle; Biogas; Gülle-Bonus; Agricultural and Food Policy; Land Economics/Use; Resource /Energy Economics and Policy.
Ano: 2010
URL: http://purl.umn.edu/93936

The potential for the production and use of biomass-based energy sources in Hungary
Provedor de dados: 31
Autores: Garay,   Robert; Kozak,   Anita; Nyars,   Levente; Radoczne Kocsis,   Terez.
Directive 2009/28/EC established a common framework for the use, production and promotion of energy from renewable sources. Subsequently, each European Union Member State was required to prepare a national Renewable Energy Action Plan (REAP) which specifies the share of energy from renewable sources to be consumed in transport, as well as in the production of electricity and heating, in 2020. The Hungarian REAP was published in December 2010. In order to identify what further steps are required to meet the targets set by the REAP, in this article we review the current situation and the potential in Hungary for the production and use of biomass, biogas and biofuel. We conclude that the annual quantity of required biomass is already available and it should...
Tipo: Article
Palavras-chave: Biomass; Biofuel; Biogas; Renewable Energy Action Plan; Hungary; Agricultural and Food Policy; Crop Production/Industries; Land Economics/Use; Resource /Energy Economics and Policy.
Ano: 2012
URL: http://purl.umn.edu/122437

ABSCHATZUNG DES UNTERNEHMERISCHEN RISIKOS BEIM BETRIEB EINER BIOGASANLAGE MIT HILFE DER MONTECARLO-METHODE (German)
Provedor de dados: 31
Autores: Rauh,   Stefan; Berenz,   Stefan; Heissenhuber,   Alois.
Die Novellierung des Gesetzes für den Vorrang Erneuerbarer Energien (EEG) führte zu einem verstärkten Einstieg von Landwirten in die Biogasproduktion. Jedoch können die mit dem EEG verbundenen relativ hohen Vergütungssätze das vorhandene Investitionsrisiko in einer Biogasanlage nicht eliminieren. Es existiert eine gewisse Zahl an Einflussfaktoren, welche die Wirtschaftlichkeit nachhaltig beeinflussen. Eine Risikoanalyse mittels der Monte-Carlo- Methode zeigt den enormen Einfluss der Risikofaktoren auf die Varianz des Gewinns. Es wird dadurch deutlich, dass eine statische Planungsrechnung, welche Unsicherheit nicht berücksichtigt, oftmals zu einer Fehleinschätzung führen kann. Gleichzeitig gelingt es mit Hilfe einer Monte-Carlo-Simulation die größten...
Tipo: Conference Paper or Presentation
Palavras-chave: Monte-Carlo-Simulation; Risikoanalyse; Wirtschaftlichkeit; Biogas.
Ano: 2007
URL: http://purl.umn.edu/7588

KONKURRENZBEZIEHUNGEN ZWISCHEN DER BIOGASERZEUGUNG UND DER TIERISCHEN PRODUKTION (German)
Provedor de dados: 31
Autores: Berenz,   Stefan; Hoffmann,   Helmut; Pahl,   Hubert.
Die durchgeführten Kalkulationen zeigen, dass die Biogaserzeugung gegenüber den anderen Betriebszweigen einen hohen Gewinnbeitrag aufweist. Dies ist im Wesentlichen auf die 2004 angehobene Stromeinspeisevergütung zurückzuführen. Andererseits wird vor allem den Rinder haltenden Betrieben aufgrund der entkoppelten Direktzahlungen die Aufgabe der Tierhaltung und der Übergang zur Biogaserzeugung erleichtert. Allerdings ist die Biogaserzeugung durch einen relativ hohen Flächenanspruch bei gleichzeitig relativ geringem Arbeitzeitbedarf gekennzeichnet. Demzufolge wirken sich steigende Pachtpreise sehr ungünstig auf die Wettbewerbskraft der Biogaserzeugung aus. Andererseits kann der Übergang zur Biogaserzeugung zu einem verringerten Arbeitseinsatz in der...
Tipo: Conference Paper or Presentation
Palavras-chave: Faktorentlohnung; Milch; Fleisch; Biogas.
Ano: 2007
URL: http://purl.umn.edu/7602

EINFLUSS DER BIOGASERZEUGUNG AUF LANDWIRTSCHAFTLICHE PACHTPREISE IN DEUTSCHLAND
Provedor de dados: 31
Autores: Breustedt,   Gunnar; Habermann,   Hendrik.
A2_3
Tipo: Conference Paper or Presentation
Palavras-chave: Biogas; Erneuerbare-Energien-Gesetz; Pachtpreise; Räumliche Ökonometrie; Agricultural and Food Policy; Land Economics/Use; Research Methods/ Statistical Methods; Resource /Energy Economics and Policy.
Ano: 2010
URL: http://purl.umn.edu/93937

The Addition of Hatchery Liquid Waste to Dairy Manure Improves Anaerobic Digestion
Provedor de dados: 89
Autores: Lopes,WRT; Orrico,ACA; Garcia,RG; Orrico Jr,MAP; Manarelli,DM; Fava,AF; Nääs,IA.
ABSTRACT The objective of this study was to determine the optimal inclusion level of liquid egg hatchery waste for the anaerobic co-digestion of dairy cattle manure. A completely randomized experimental was applied, with seven treatments (liquid hatchery waste to cattle manure ratios of0: 100, 5:95, 10:90, 15:85, 20:80, 25:75 and 30:70), with five replicates (batch digester model) each. The evaluated variables were disappearance of total solids (TS), volatile solids (VS), and neutral detergent fiber (NDF), and specific production of biogas and of methane. Maximum TS and VS disappearance of 41.3% and 49.6%, were obtained at 15.5% and 16.0% liquid hatchery waste inclusion levels. The addition of 22.3% liquid hatchery considerably reduced NDF substrate...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Poultry production; Biogas; Methane; Total solids; Volatile solids.
Ano: 2016
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2016000600065

Anaerobic co-digestion of hatchery waste and wastewater to produce energy and biofertilizer - Batch phase
Provedor de dados: 91
Autores: Matter,Juliana M.; Costa,Mônica S. S. de M.; Costa,Luiz A. de M.; Pereira,Dercio C.; Varennes,Amarílis de; Tessaro,Dinéia.
ABSTRACT Aiming to evaluate different wastewaters in the anaerobic co-digestion (ACoD) of hatchery wastes, a batch test was conducted in bench horizontal digesters. At the end of the process, the potential production of biogas and methane was calculated as well as the chemical composition (macro- and micronutrients) of the effluent and the concentrations of methane and carbon dioxide gas at 60 days. The monitoring of the process included observations of the reduction of the organic carbon, chemical oxygen demand, and total (TS) and volatile solids (VS), as well as the variation of pH and electrical conductivity (EC). The results showed that the mixing between the hatchery fresh waste and swine wastewater (T4) and among fresh hatchery waste, water from the...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Biogas; Methane; Swine wastewater; Slaughterhouse wastewater.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-43662017000900651

Anaerobic bio-digestion of concentrate obtained in the process of ultra filtration of effluents from tilapia processing unit
Provedor de dados: 96
Autores: Souza,Milena Alves de; Chaguri,Milena Penteado; Castelini,Fabrício Rogério; Lucas Junior,Jorge de; Vidotti,Rose Meire.
The objective of the present study was to evaluate the efficiency of the process of biodigestion of the protein concentrate resulting from the ultrafiltration of the effluent from a slaughterhouse freezer of Nile tilapia. Bench digesters were used with excrements and water (control) in comparison with a mixture of cattle manure and effluent from the stages of filleting and bleeding of tilapias. The effluent obtained in the continuous process (bleeding + filleting) was the one with highest accumulated population from the 37th day, as well as greatest daily production. Gases composition did not differ between the protein concentrates, but the gas obtained with the use of the effluent from the filleting stage presented highest methane gas average (78.05%) in...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Biogas; Bleeding; Filleting; Freshwater-fish; Methane.
Ano: 2012
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982012000200002

Co-digestion of swine excreta associated with increasing levels of crude glycerin
Provedor de dados: 96
Autores: Orrico Junior,Marco Antonio Previdelli; Schwingel,Alice Watte; Centurion,Stanley Ribeiro; Orrico,Ana Carolina Amorim.
ABSTRACT The objective of this research was to evaluate the performance of anaerobic co-digestion of swine excreta associated with increasing doses of crude glycerin and different hydraulic retention times (HRT). A completely randomized design was adopted in a 3 × 4 factorial arrangement composed of three HRT (10, 17, and 24 days) and four crude glycerin doses (0, 5, 10, and 15 g/100 g of total solids [TS]), with four replications per treatment. The assessed parameters were: biogas production potential, reductions of volatile solids (VS), chemical oxygen demand (COD), and most probable number of total and thermotolerant coliforms. The biogas production per added VS presented quadratic effect at 17 and 24 days of HRT, with ideal doses of 5.5 and 5.9 g of...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Biodiesel; Biogas; Manure; Waste.
Ano: 2016
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982016000300101

EFFECTIVE MICROORGANISMS (EM) AS BIOFEEDERS FOR ANAEROBIC DIGESTION
Provedor de dados: 107
Autores: Souza Ferreira, Cecília de Fátima; Gates, Richard Stephen; Batista, Maurílio Duarte; TINOCO, Ilda de Fatima Ferreira.
Soil micro-organisms called Effective Microorganisms (EM) were first cultivated and used in the 1970s.  Researches about these cultures have since then demonstrated their effectiveness in improving soil characteristics and as an alternative for accelerating organic matter decomposition in waste treatment systems. The objective of this study was to test whether the addition of EM to substrates incubated in anaerobic digesters would increase the efficiency of waste treatment and biogas production. EM cultures were obtained from bacterial colonies captured within the A-horizon of a Brazilian forest soil. They were left to grow during 15 days on cooked rice contact with the soil; afterwards, the established colonies were separated according to their colors,...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Construções Rurais e Ambiência animal production; Biogas; Cattle; Digesters; Waste management.
Ano: 2017
URL: http://www.seer.ufv.br/seer/index.php/reveng/article/view/687

Crude glycerin in anaerobic co-digestion of dairy cattle manure increases methane production
Provedor de dados: 63
Autores: 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

Enzyme complex supplementation in different nutrient levels diets on pigs feces excretion and anaerobic digestion
Provedor de dados: 63
Autores: Ruiz,Urbano dos Santos; Thomaz,Maria Cristina; Lucas Júnior,Jorge de; Pascoal,Leonardo Augusto Fonseca; Watanabe,Pedro Henrique; Amorim,Alessandro Borges; Xavier,Cristiane de Almeida Neves; Silva,Adriane Andrade.
ABSTRACT This research aimed to evaluate enzyme supplementation in diets with different nutritional levels for pigs in their feces excretion and anaerobic digestion. Fifty four gilts were placed on diets formulated to achieve 100 or 95 or 90 % of a pig's nutrient requirements, with the addition of an enzyme complex containing amylase, β-glucanase, cellulase, pectinase, xylanase, protease and phytase (diets 100E, 95E and 90E) or without the enzymes (diets 100, 95 and 90). The trial was divided into three periods (1, 1-2 and 1-3) based on the animal weight. The enzyme complex reduced (p &lt; 0.05) excretions per period and per unit of weight gain (residue coefficients) of organic matter (OM) in Period 1, of N, Ca, Zn and Na in Period 1-2, and of Na...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Biogas; Environmental impact; Fecal production; Swine.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162017000300180

Use of Water Hyacinth (Eichhornia crassipes) to Treat Biogas Effluent of A Tapioca Industry Wastewater Treatment System
Provedor de dados: 111
Autores: Haryanto, Agus; Triyono, Sugeng; Siska, Posmaria Mei.
This research aims to evaluate performance of a water hyacinth (Eichornia crassipes (Mart) Solms) pond used to treat biogas effluent of a tapioca industry wastewater treatment system.  The water hyacinth pond which treats biogas effluent has been monitored for about two months.  Wastewater samples were taken from influent and effluent of the water hyacinth pond.  Parameters to be observed included wastewater quality parameters (pH, temperature, turbidity, BOD5, ammonia, solids, evapotranspiration, discharge, and hydraulic retention time) and water hyacinth parameters (growth, population density, moisture, ash, nutrient contents).  The results showed that water hyacinth improved some parameters of the biogas effluent to some extent.  Within HRT of 53 days,...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Wastewater; Biogas; Environmental burden; Organic matter; Indonesia.
Ano: 2020
URL: http://www.cigrjournal.org/index.php/Ejounral/article/view/5867

Improving the performance of mechanical stirring in biogas plant by computational fluid dynamics (CFD)
Provedor de dados: 111
Autores: Mohammadrezaei, Rashed; Zareei, Samira; Behroozi-Khazaei, Nasser.
Stirring of material in biogas plant needs to be done to provide desirable contact between microorganisms and substrate which can improve digestion process. In the present study, computational fluid dynamics (CFD) was used to determine a suitable mechanical stirrer for biogas plant and simulate the flow pattern. In order to select optimum design of impeller, three types of impeller including six-blade turbine, four-blade turbine and six-flat-blade disc turbine were evaluated. Simulations were undertaken utilizing Fluent 15.0 software with a multiple reference frame approach via standard k-ε turbulence model under steady-state conditions. According to the simulation results, six-blade turbine impeller is more appropriate than the two other impellers. The...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Energy; Biogas; Stirrer Anaerobic digestion  cow manure  flow pattern  simulation  stirred tank.
Ano: 2018
URL: http://www.cigrjournal.org/index.php/Ejounral/article/view/4183

Methane Production by the Anaerobic Digestion of Tall Fescue samples pre- and post-ensiling, prepared by Thermal (40°C) or Freeze Drying
Provedor de dados: 111
Autores: 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

Biogas and Biomass Implementation in Rural Areas
Provedor de dados: 52
Autores: Sandim,Álvaro A.; Batista,Alexandre G.; Bareta,Maria Luiza E.; Betini,Roberto C.; Pepplow,Luiz Amilton.
Abstract Advances in energy demand in rural areas cannot be dissociated from agricultural modernization, large estates, mechanization of labor and reduced investment in small production. The use of biogas together with biomass are the most cost-effective ways for the small producer, as it has a high calorific value. In the case of biogas the procedure is performed by combining a compressor and a chiller, allowing the gas enter the reactor and burn together with the air stream. The use of these techniques is an auxiliary way to reduce the cost of the producer to produce a certain crop, besides allowing a participation in the final energy supply, so that the utilities have an alternative to distribute the surplus energy to another region, serving thus a...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Biogas; Biomass; Rural areas; Electricity.
Ano: 2019
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132019000200201

Sanitation and Drying of Sewage Sludge on Radiant Floors Using Solar Energy and Biogas: Comparison between Different Thicknesses of Deposited Mass
Provedor de dados: 52
Autores: Gontijo,Jéssica Cristine; Wagner,Luiz Gustavo; Souza,Mariana Espíndola de; Possetti,Gustavo Rafael Collere.
ABSTRACT Sewage sludge is a solid waste composed of water, rich in organic matter and nutrients, but concentrator of pathogenic microorganisms. Its use as agricultural fertilizer in the state of Paraná, Brazil is common. However, it is necessary to eliminate or significantly reduce microorganisms by means of a hygiene process. This can be obtained thermally, requiring a source of energy for heat generation. In this sense, a pilot system was constructed consisting of a stainless steel radiant floor, capable of transferring heat to the sewage sludge from coils coupled in base, through which the heated water circulates. The energy comes from solar radiation and is complemented by biogas from the anaerobic sewage treatment. Aiming to investigate the system's...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Biogas; Sanitation; Sewage sludge; Solar energy; Thermal drying.
Ano: 2018
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132018000200217

Storage of purified biogas (biomethane) at low pressure
Provedor de dados: 52
Autores: Feroldi,Michael; Caroline,Andressa; Borba,Neves, Carlos Eduardo; Arantes,Mabel Karina; José,Alves Helton.
ABSTRACT The global use of fossil energy sources has led to the need to develop technologies capable of mitigating its consequences. One such option is anaerobic biodigestion, which is already scientifically well-established, although the use of its main products (biogas and biomethane) still requires further development before they can be employed in automotive vehicles, largely due to technical issues concerning their storage. The storage of methane using adsorption (Adsorbed Natural Gas - ANG) is a technology that requires less energy and moderate pressures and temperatures. However, the main storage techniques continue to be those that involve high pressures and/or cryogenic temperatures. The present work evaluates the performance of an unprecedented...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Adsorption; Biogas; Vehicle fuel.
Ano: 2018
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132018000200200

Energy Potential of Animal Waste in the State of Paraná (Brazil)
Provedor de dados: 52
Autores: Mancini,Fabrízio Nicolai; Milano,Jackson; Araújo,Joilson Gonçalves de; Iastrenski,Karen Techy; Silveira,Nicolli Sperança; Pertile,Rodrigo Creuz.
Abstract Animal biomass is a source of energy commonly discarded without or with low utilization, but its availability draws attention to its reuse [1]. The utilization can be carried out in different ways, varying in terms of generation time and efficiency. The use of biodigestion requires a relatively small area compared to landfills or natural composting, and it provides other materials besides biogas, that can be recycled as fertilizer and has a short residence time of residues [2]. The energy supplied as biogas can be harnessed as heat or electricity in case of conversion. Considering the energy needs of animal husbandry and the ease of reinsertion of energy in the production cycle, the possibility of distributed generation of biogas was studied as a...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Biodigestion; Rural energy consumption; Biogas.
Ano: 2019
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132019000200208

Biomethane production from vinasse in upflow anaerobic sludge blanket reactors inoculated with granular sludge
Provedor de dados: 58
Autores: Barros,Valciney Gomes de; Duda,Rose Maria; Oliveira,Roberto Alves de.
ABSTRACT The main objective of this study was to evaluate the anaerobic conversion of vinasse into biomethane with gradual increase in organic loading rate (OLR) in two upflow anaerobic sludge blanket (UASB) reactors, R1 and R2, with volumes of 40.5 and 21.5 L in the mesophilic temperature range. The UASB reactors were operated for 230 days with a hydraulic detection time (HDT) of 2.8 d (R1) and 2.8-1.8 d (R2). The OLR values applied in the reactors were 0.2-7.5 g totalCOD (L d)−1 in R1 and 0.2-11.5 g totalCOD (L d)−1 in R2. The average total chemical oxygen demand (totalCOD) removal efficiencies ranged from 49% to 82% and the average conversion efficiencies of the removed totalCOD into methane were 48-58% in R1 and 39-65% in R2. The effluent recirculation...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Biogas; Mesophilic anaerobic treatment; Methane; Organic loading rate; Startup.
Ano: 2016
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822016000300628

Residual Glycerol from Biodiesel Manufacturing, Waste or Potential Source of Bioenergy: A Review
Provedor de dados: 117
This review provides a summary of the research conducted on the use of crude glycerol, the major byproduct of the biodiesel industry, as substrate for anaerobic co-digestion and production of biogas. In general, for every 100 kg biodiesel produced, approximately 10 kg crude glycerol is generated. Because this glycerol is expensive to purify for use in food, pharmaceutical, or cosmetic industries, biodiesel producers must seek alternative methods for its disposal. Several studies have demonstrated that the use of crude glycerol as a C source for fermentation and biogas generation is a promising alternative use for this waste material. The high C content of glycerol increases the C:N ratio in the mixture, avoiding the inhibition of the process by the excess...
Tipo: Journal article
Palavras-chave: Anaerobic co-digestion; Glycerol; Biogas; Biodiesel; Digestate.
Ano: 2011
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-58392011000300019

Economic feasibility of biogas production in swine farms using time series analysis
Provedor de dados: 65
Autores: Rockenbach,Felipe Luis; Souza,Adriano Mendonça; Oliveira,João Helvio Righi de.
ABSTRACT: This study aimed to measure the economic feasibility and the time needed to return capital invested for the installation of a swine manure treatment system, these values originated the sale of carbon credits and/or of compensation of electric energy in swine farms, using the Box-Jenkins forecast models. It was found that the use of biogas is a viable option in a large scale with machines that operate daily for 10h or more, being the return period between 70 to 80 months. Time series analysis models are important to anticipate the series under study behavior, providing the swine breeder/investor means to reduce the financial investment risk as well as helping to decrease the production costs. Moreover, this process can be seen as another source of...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Biodigestors; Biogas; Renewable energy; Income; Time series.
Ano: 2016
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782016000701295

Anaerobic co-digestion of animal manure at different waste cooking oil concentrations
Provedor de dados: 65
Autores: Sunada,Natália da Silva; Orrico,Ana Carolina Amorim; Orrico Junior,Marco Antonio Previdelli; Lucas Junior,Jorge de; Lopes,Walter Renato Teixeira; Schwingel,Alice Watte.
ABSTRACT: This study aimed to obtain the best dose of waste cooking oil inclusion for the co-digestion of substrates prepared with dairy cattle and swine manure in order to maximize solids reductions and biogas yield. Analyses of total solids (TS), volatile solids (VS), and neutral detergent fiber (NDF) were performed during the loading and unloading of digesters, while biogas yield was measured twice a week. The maximum reduction in VS (51.4%) was reached with the inclusion of up to 54.6g waste cooking oil.kg manure-1. Maximum NDF degradation occurred with inclusions of up to 69.4g waste cooking oil.kg manure-1. Inclusions of up to 64g of waste cooking oil.kg manure-1 provided specific biogas yield of 291.4 and 251.0L biogas.kg VS-1 added to substrates...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Digestion; Biogas; Energy recycling.
Ano: 2018
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782018000700351