potencial de produção de biogás remanescente nos efluentes de biodigestores abastecidos com dejetos de suínos, com e sem separação da fração sólida, e conduzidos sob diferentes tempos de retenção hidráulica production potential of biogas remaining on effluents from biodigesters that operate with swine manure, with and without solid fractions separation under different hydraulic retention times

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ID: 219977
2009
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Abstract
O objetivo foi avaliar o potencial poluidor remanescente dos efluentes de biodigestores abastecidos com dejetos de suínos com separação da fração sólida (CSFS) e sem separação da fração sólida (SSFS), e conduzidos sob diferentes tempos de retenção hidráulica (TRH). Os efluentes utilizados eram de biodigestores semicontínuos manejados com TRH de 15; 22; 29 e 36 dias, com e sem separação da fração sólida. Foram utilizados biodigestores batelada, que permaneceram em operação por todo o tempo em que houve produção de biogás (60 dias). Foram avaliadas a produção e a qualidade do biogás, bem como os potenciais de produção por kg de sólidos totais e sólidos voláteis, e as demandas química e bioquímica de oxigênio. Utilizou-se do delineamento inteiramente casualisado, em esquema fatorial 2x4, com três repetições por tratamento. Foram encontrados potenciais de produção de 385 e 117 litros de CH4kg-1 de SV adicionados no material SSFS e CSFS, respectivamente, no menor TRH (15 dias), e potenciais de produção de 74 e 18 litros de CH4kg-1 de SV adicionados no material SSFS e CSFS, respectivamente, no maior TRH (36 dias).
The objective of this work was to evaluate the polluting potential from the remainings of effluents from biodigesters that operate with swine manure with the separation of the solid fraction and without the separation of the solid fraction, both under different hydraulic retention times (HRT). For the biodigestion trial, the effluents from semi-continuous biodigesters were processed with 15; 22; 29 and 36 days of hydraulic retention, with and without the separation of the solid fraction. In this part of the work batch biodigesters were used, which were kept in the operation as long as biogas was produced (60 days). It was evaluated: biogas production and quality and yield potential, the potential production per kg of total solids and volatile solids and chemical and biochemical demands for oxygen. Production potential found with separation of the solid fraction was 385 liter of CH4kg-1 of VS added and the effluent without the separation of the solid fraction was 117 liter of CH4kg-1 of VS added, for the shorter HRT (15 days) and production potentials of 74 and 18 liters of CH4kg-1 of VS added to the substrates with swine manure with the separation of the solid fraction and without the separation of the solid fraction respectively for the longer HRT (36 days).
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jnior2009engenhariapotencial Use this key to autocite in the manuscript while using SciMatic Manuscript Manager or Thesis Manager
Authors Marco A. P. Orrico Júnior, Ana C. A. Orrico, Jorge de Lucas Júnior
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Journal bioorganic and medicinal chemistry letters
Year 2009
DOI
10.1590/S0100-69162009000400018
URL
http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-69162009000400018
Keywords
methane

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