Consulta: subjectFacets:"Biodigester"
Registros recuperados: 5
Data/hora: 09/06/2024 01:16:11

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

BIOGAS PRODUCTION FROM DAIRY CATTLE MANURE, UNDER ORGANIC AND CONVENTIONAL PRODUCTION SYSTEMS
Provedor de dados: 70
Autores: Matos,Camila F.; Paes,Juliana L.; Pinheiro,Érika F. M.; Campos,David V. B. De.
ABSTRACT The purpose of this study was to evaluate the production of biogas, as well as the biogas production potential resulting from the anaerobic biodigestion of dairy cattle manure under organic (CMOS) and conventional (CMCS) production system. Also, the concentration of thermotolerant coliforms was evaluated after the biodigestion process. Therefore, bench biodigesters prototypes were supplied with CMOS and CMCS for 30 weeks. The experimental design was completely randomized with four repetitions for each treatment. Analysis of total solids (TS), volatile solids (VS), biogas production potential, most probable number (MPN) of thermotolerant coliforms were made. The cumulative biogas production was 6.18 L and 11.15 L, when using the CMOS and CMCS,...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Anaerobic biodigestion; Biodigester; Agricultural waste.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-69162017000601081

Biogás: uma alternativa de energia no meio rural.
Provedor de dados: 14
Autores: ALVES, S. de M.; MELO, C. F. M. de; WISNIEWSKI, A.
bitstream/item/59482/1/Miscelanea-4.pdf
Tipo: Séries anteriores (INFOTECA-E)
Palavras-chave: Construção; Biodigester; Biofertilizer; Construction.; Biogás; Biofertilizante; Biodigestor; Energia; Pesquisa.; Energy; Research.
Ano: 1980
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/378021

Air Emissions of Ammonia and Methane from Livestock Operations: Valuation and Policy Options
Provedor de dados: 31
Autores: Shih,   Jhih-Shyang; Burtraw,   Dallas; Palmer,   Karen L.; Siikamaki,   Juha.
The animal husbandry industry is a major emitter of methane, which is an important greenhouse gas. The industry is also a major emitter of ammonia, which is a precursor of fine particulate matter, arguably the number-one environment-related public health threat facing the nation. We present an integrated process model of the engineering economics of technologies to reduce methane and ammonia emissions at dairy operations in California. Three policy options are explored: greenhouse gas offset credits for methane control, particulate matter offset credits for ammonia control, and expanded net metering policies to provide revenue for the sale of electricity generated from captured methane gas. Individually, any of these policies appears to be sufficient to...
Tipo: Working or Discussion Paper
Palavras-chave: Methane; Ammonia; Carbon dioxide; Greenhouse gases; Climate change; Offset; Particulate matter; Net metering; Environmental policy; CAFO; Manure management; Biodigester; Electricity; Global warming; Cost-benefit; Incentive approach; Livestock Production/Industries; Q2; Q4; Q53.
Ano: 2006
URL: http://purl.umn.edu/10749