Mathematical models of anaerobic digestion for the treatment of swine effluents
Autor(a) principal: | |
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Data de Publicação: | 2015 |
Outros Autores: | , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Pesquisa Agropecuária Tropical (Online) |
Texto Completo: | https://revistas.ufg.br/pat/article/view/31052 |
Resumo: | Pig breeding results in the production of large amounts of waste, which can cause serious environmental problems, when handled incorrectly. This study aimed at testing mathematical models to estimate the parameters of anaerobic biodigestion in biodigesters as a function of the composition of swine effluents with and without separation of the solid fraction and hydraulic retention times (HRT). Semi-continuous biodigesters fed with swine effluents with and without separation of the solid fraction and managed for 15, 22, 29 and 36 days of hydraulic retention were used. The potential of biogas and methane production, as well as the reduction of total solids, volatile solids and chemical oxygen demand, were assessed as a function of the effluents composition. HRT was the variable that most influenced the variation of the models, followed by the contents of total and volatile solids. Uni and multivariate models presented high confidence indices, being classified as “great” at predicting the potentials of biogas and methane production and “good” at predicting the reductions of total solids, volatile solids and chemical oxygen demand. The models obtained in this study can be used to reliably predict the parameters of the anaerobic biodigestion process of swine effluents in semi-continuous tubular biodigesters. |
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Mathematical models of anaerobic digestion for the treatment of swine effluentsModelos matemáticos da biodigestão anaeróbia para o tratamento de efluentes de suínosMethanebiodigesterbiogas.Metanobiodigestorbiogás.Pig breeding results in the production of large amounts of waste, which can cause serious environmental problems, when handled incorrectly. This study aimed at testing mathematical models to estimate the parameters of anaerobic biodigestion in biodigesters as a function of the composition of swine effluents with and without separation of the solid fraction and hydraulic retention times (HRT). Semi-continuous biodigesters fed with swine effluents with and without separation of the solid fraction and managed for 15, 22, 29 and 36 days of hydraulic retention were used. The potential of biogas and methane production, as well as the reduction of total solids, volatile solids and chemical oxygen demand, were assessed as a function of the effluents composition. HRT was the variable that most influenced the variation of the models, followed by the contents of total and volatile solids. Uni and multivariate models presented high confidence indices, being classified as “great” at predicting the potentials of biogas and methane production and “good” at predicting the reductions of total solids, volatile solids and chemical oxygen demand. The models obtained in this study can be used to reliably predict the parameters of the anaerobic biodigestion process of swine effluents in semi-continuous tubular biodigesters.A suinocultura resulta na produção de grandes quantidades de resíduos, os quais, quando manuseados incorretamente, podem causar graves problemas ambientais. Este estudo objetivou testar modelos matemáticos para estimar os parâmetros de biodigestão anaeróbia em biodigestores, em função da variação da composição de efluentes de suinocultura com e sem separação da fração sólida e dos tempos de retenção hidráulica (TRH). Foram utilizados biodigestores semicontínuos, abastecidos com efluentes de suinocultura com e sem separação da fração sólida, manejados por 15, 22, 29 e 36 dias de retenção hidráulica. Foram avaliados os potenciais de produção de biogás e metano e as reduções de sólidos totais, sólidos voláteis e demandas químicas de oxigênio, em função da composição dos efluentes. O TRH foi a variável que teve maior influência na variação dos modelos, seguido dos teores de sólidos totais e voláteis. Os modelos uni e multivariados apresentaram elevados índices de confiança, sendo classificados como ótimos para predizer os potenciais de produção de biogás e metano e como bons para predizer as reduções de sólidos totais, sólidos voláteis e demanda química de oxigênio. Os modelos deste estudo podem ser utilizados para predizer com segurança os parâmetros do processo de biodigestão anaeróbia de efluentes de suinocultura, em biodigestores semicontínuos tubulares.Escola de Agronomia - Universidade Federal de Goiás2015-05-25info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionapplication/pdfhttps://revistas.ufg.br/pat/article/view/31052Pesquisa Agropecuária Tropical [Agricultural Research in the Tropics]; v. 45, n. 2, Apr./Jun. 2015; 172-179Pesquisa Agropecuária Tropical (Agricultural Research in the Tropics); v. 45, n. 2, abr./jun. 2015; 172-179Pesquisa Agropecuária Tropical; v. 45, n. 2, abr./jun. 2015; 172-1791983-4063reponame:Pesquisa Agropecuária Tropical (Online)instname:Universidade Federal de Goiás (UFG)instacron:UFGenghttps://revistas.ufg.br/pat/article/view/31052/18628Copyright (c) 2020 Pesquisa Agropecuária Tropical (Agricultural Research in the Tropics)info:eu-repo/semantics/openAccessFagundes, Daisa StéfanoOrrico Junior, Marco Antonio PrevidelliOrrico, Ana Carolina AmorimSeno, Leonardo Oliveira2020-07-13T16:14:41Zoai:ojs.revistas.ufg.br:article/31052Revistahttps://revistas.ufg.br/patPUBhttps://revistas.ufg.br/pat/oaiaseleguini.pat@gmail.com||mgoes@agro.ufg.br1983-40631517-6398opendoar:2024-05-21T19:56:07.577917Pesquisa Agropecuária Tropical (Online) - Universidade Federal de Goiás (UFG)true |
dc.title.none.fl_str_mv |
Mathematical models of anaerobic digestion for the treatment of swine effluents Modelos matemáticos da biodigestão anaeróbia para o tratamento de efluentes de suínos |
title |
Mathematical models of anaerobic digestion for the treatment of swine effluents |
spellingShingle |
Mathematical models of anaerobic digestion for the treatment of swine effluents Fagundes, Daisa Stéfano Methane biodigester biogas. Metano biodigestor biogás. |
title_short |
Mathematical models of anaerobic digestion for the treatment of swine effluents |
title_full |
Mathematical models of anaerobic digestion for the treatment of swine effluents |
title_fullStr |
Mathematical models of anaerobic digestion for the treatment of swine effluents |
title_full_unstemmed |
Mathematical models of anaerobic digestion for the treatment of swine effluents |
title_sort |
Mathematical models of anaerobic digestion for the treatment of swine effluents |
author |
Fagundes, Daisa Stéfano |
author_facet |
Fagundes, Daisa Stéfano Orrico Junior, Marco Antonio Previdelli Orrico, Ana Carolina Amorim Seno, Leonardo Oliveira |
author_role |
author |
author2 |
Orrico Junior, Marco Antonio Previdelli Orrico, Ana Carolina Amorim Seno, Leonardo Oliveira |
author2_role |
author author author |
dc.contributor.author.fl_str_mv |
Fagundes, Daisa Stéfano Orrico Junior, Marco Antonio Previdelli Orrico, Ana Carolina Amorim Seno, Leonardo Oliveira |
dc.subject.por.fl_str_mv |
Methane biodigester biogas. Metano biodigestor biogás. |
topic |
Methane biodigester biogas. Metano biodigestor biogás. |
description |
Pig breeding results in the production of large amounts of waste, which can cause serious environmental problems, when handled incorrectly. This study aimed at testing mathematical models to estimate the parameters of anaerobic biodigestion in biodigesters as a function of the composition of swine effluents with and without separation of the solid fraction and hydraulic retention times (HRT). Semi-continuous biodigesters fed with swine effluents with and without separation of the solid fraction and managed for 15, 22, 29 and 36 days of hydraulic retention were used. The potential of biogas and methane production, as well as the reduction of total solids, volatile solids and chemical oxygen demand, were assessed as a function of the effluents composition. HRT was the variable that most influenced the variation of the models, followed by the contents of total and volatile solids. Uni and multivariate models presented high confidence indices, being classified as “great” at predicting the potentials of biogas and methane production and “good” at predicting the reductions of total solids, volatile solids and chemical oxygen demand. The models obtained in this study can be used to reliably predict the parameters of the anaerobic biodigestion process of swine effluents in semi-continuous tubular biodigesters. |
publishDate |
2015 |
dc.date.none.fl_str_mv |
2015-05-25 |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
https://revistas.ufg.br/pat/article/view/31052 |
url |
https://revistas.ufg.br/pat/article/view/31052 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
https://revistas.ufg.br/pat/article/view/31052/18628 |
dc.rights.driver.fl_str_mv |
Copyright (c) 2020 Pesquisa Agropecuária Tropical (Agricultural Research in the Tropics) info:eu-repo/semantics/openAccess |
rights_invalid_str_mv |
Copyright (c) 2020 Pesquisa Agropecuária Tropical (Agricultural Research in the Tropics) |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
application/pdf |
dc.publisher.none.fl_str_mv |
Escola de Agronomia - Universidade Federal de Goiás |
publisher.none.fl_str_mv |
Escola de Agronomia - Universidade Federal de Goiás |
dc.source.none.fl_str_mv |
Pesquisa Agropecuária Tropical [Agricultural Research in the Tropics]; v. 45, n. 2, Apr./Jun. 2015; 172-179 Pesquisa Agropecuária Tropical (Agricultural Research in the Tropics); v. 45, n. 2, abr./jun. 2015; 172-179 Pesquisa Agropecuária Tropical; v. 45, n. 2, abr./jun. 2015; 172-179 1983-4063 reponame:Pesquisa Agropecuária Tropical (Online) instname:Universidade Federal de Goiás (UFG) instacron:UFG |
instname_str |
Universidade Federal de Goiás (UFG) |
instacron_str |
UFG |
institution |
UFG |
reponame_str |
Pesquisa Agropecuária Tropical (Online) |
collection |
Pesquisa Agropecuária Tropical (Online) |
repository.name.fl_str_mv |
Pesquisa Agropecuária Tropical (Online) - Universidade Federal de Goiás (UFG) |
repository.mail.fl_str_mv |
aseleguini.pat@gmail.com||mgoes@agro.ufg.br |
_version_ |
1799874818898657280 |