Produção de hidrogênio e metano a partir da co-digestão de soro de queijo e glicerol em reator anaeróbio de leito fluidizado
Autor(a) principal: | |
---|---|
Data de Publicação: | 2021 |
Tipo de documento: | Tese |
Idioma: | por |
Título da fonte: | Repositório Institucional da UFSCAR |
Texto Completo: | https://repositorio.ufscar.br/handle/ufscar/15680 |
Resumo: | Cheese whey and glycerol are by-products of the dairy and biodiesel industry, respectively. Both by-products are highly produced and can be used in the anaerobic digestion process for energy generation due to their high organic content. The adoption of two-stage anaerobic digestion associated with the application of co-substrates brings several advantages, such as increases in COD removal and production of H2 and CH4. In this context, the objective of this research was to evaluate the co-digestion of cheese whey and glycerol in an anaerobic fluidized bed reactor (AFBR) using a two-stage process, and to verify the effect of organic loading rate (OLR) and temperature on the production of H2 and CH4. Thus, the co-digestion was performed in a thermophilic methanogenic reactor (RU-T) by increasing the OLR from 2 to 20 gCOD.L-1.d-1, with a hydraulic retention time (HRT) of 24 h. After the optimal concentration determination, the HRT was decrease from 24 to 20 and 16 h. For the two-stage process, the OLR of the acidogenic reactor (RA-T) was increased from 60 to 120 gCOD.L-1.d-1 (HRT 4 h) and of the methanogenic reactor from 2 to 20 gCOD.L-1.d-1 (HRT 24 h). Besides, the effect of temperature was investigated in the second stage using a thermophilic (RS-T) and a mesophilic (RS-M) methanogenic reactor. RU-T showed the best performance in the OLR of 10 gCOD.L-1.d-1, with methane yield (MY) of 253.0 NmL CH4.gCOD-1rem and methane production rate (MPR) of 3.2 L CH4.L-1.d-1. In the HRT evaluation, the HRT of 20 h provided the maximum MY of 292.5 NmL CH4.gCOD-1rem, while the maximum MPR was observed in the HRT of 16 h (5.1 L CH4.L-1.d-1). Acetic and propionic acid were the dominant metabolites. Regarding the two-stage process, the RA-T provided a yield of 1.7 mmol H2.gCOD-1app and hydrogen production rate of 3.9 L H2.L-1.d-1, both in the OLR of 90 gCOD.L-1.d-1, with butyric and acetic acid as main metabolites. RS-M produced the highest MY and MPR, equal to 273.2 NmL CH4.gCOD-1rem and 5.8 L CH4.L-1.d-1 in the OLR of 20 gCOD.L-1.d-1. The RS-T showed MY of 269.9 NmL CH4.gCOD-1rem in OLR 10 gCOD.L-1.d-1 and MPR of 4.4 L CH4.L-1.d-1 in 20 gCOD.L-1.d-1. Acetic and isobutyric acid were the main metabolites. Through sequencing analysis, was identified as dominant genus in RA-T Themoanaerobacterium. Archaeas of the genus Methanobacterium was the most abundant in RS-M and RU-T, while the genus Methanothermobacter was in RS-T. In general, it is verified that OLR above 10 gCOD.L-1.d-1 was harmful to RU-T and RS-T, while RS-M showed stability at 20 gCOD.L-1.d-1. The two-stage process showed better performance, however, considering the results of the HRT evaluation in the RU-T, there is the possibility of applying smaller HRT in the second stage for higher CH4 production. |
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Almeida, Priscilla de SouzaSilva, Edson Luizhttp://lattes.cnpq.br/9720274214573371http://lattes.cnpq.br/1732909136264562fc3e1405-53d9-4858-a9e3-ecba7c2e0a2b2022-03-08T20:26:12Z2022-03-08T20:26:12Z2021-12-14ALMEIDA, Priscilla de Souza. Produção de hidrogênio e metano a partir da co-digestão de soro de queijo e glicerol em reator anaeróbio de leito fluidizado. 2021. Tese (Doutorado em Engenharia Química) – Universidade Federal de São Carlos, São Carlos, 2021. Disponível em: https://repositorio.ufscar.br/handle/ufscar/15680.https://repositorio.ufscar.br/handle/ufscar/15680Cheese whey and glycerol are by-products of the dairy and biodiesel industry, respectively. Both by-products are highly produced and can be used in the anaerobic digestion process for energy generation due to their high organic content. The adoption of two-stage anaerobic digestion associated with the application of co-substrates brings several advantages, such as increases in COD removal and production of H2 and CH4. In this context, the objective of this research was to evaluate the co-digestion of cheese whey and glycerol in an anaerobic fluidized bed reactor (AFBR) using a two-stage process, and to verify the effect of organic loading rate (OLR) and temperature on the production of H2 and CH4. Thus, the co-digestion was performed in a thermophilic methanogenic reactor (RU-T) by increasing the OLR from 2 to 20 gCOD.L-1.d-1, with a hydraulic retention time (HRT) of 24 h. After the optimal concentration determination, the HRT was decrease from 24 to 20 and 16 h. For the two-stage process, the OLR of the acidogenic reactor (RA-T) was increased from 60 to 120 gCOD.L-1.d-1 (HRT 4 h) and of the methanogenic reactor from 2 to 20 gCOD.L-1.d-1 (HRT 24 h). Besides, the effect of temperature was investigated in the second stage using a thermophilic (RS-T) and a mesophilic (RS-M) methanogenic reactor. RU-T showed the best performance in the OLR of 10 gCOD.L-1.d-1, with methane yield (MY) of 253.0 NmL CH4.gCOD-1rem and methane production rate (MPR) of 3.2 L CH4.L-1.d-1. In the HRT evaluation, the HRT of 20 h provided the maximum MY of 292.5 NmL CH4.gCOD-1rem, while the maximum MPR was observed in the HRT of 16 h (5.1 L CH4.L-1.d-1). Acetic and propionic acid were the dominant metabolites. Regarding the two-stage process, the RA-T provided a yield of 1.7 mmol H2.gCOD-1app and hydrogen production rate of 3.9 L H2.L-1.d-1, both in the OLR of 90 gCOD.L-1.d-1, with butyric and acetic acid as main metabolites. RS-M produced the highest MY and MPR, equal to 273.2 NmL CH4.gCOD-1rem and 5.8 L CH4.L-1.d-1 in the OLR of 20 gCOD.L-1.d-1. The RS-T showed MY of 269.9 NmL CH4.gCOD-1rem in OLR 10 gCOD.L-1.d-1 and MPR of 4.4 L CH4.L-1.d-1 in 20 gCOD.L-1.d-1. Acetic and isobutyric acid were the main metabolites. Through sequencing analysis, was identified as dominant genus in RA-T Themoanaerobacterium. Archaeas of the genus Methanobacterium was the most abundant in RS-M and RU-T, while the genus Methanothermobacter was in RS-T. In general, it is verified that OLR above 10 gCOD.L-1.d-1 was harmful to RU-T and RS-T, while RS-M showed stability at 20 gCOD.L-1.d-1. The two-stage process showed better performance, however, considering the results of the HRT evaluation in the RU-T, there is the possibility of applying smaller HRT in the second stage for higher CH4 production.O soro de queijo e o glicerol são subprodutos da indústria de laticínios e do biodiesel gerados abundantemente e, podem ser utilizados no processo de digestão anaeróbia para geração de energia devido ao elevado teor orgânico que apresentam. A adoção da digestão anaeróbia em dois estágios associada à aplicação de co-substratos traz diversas vantagens, como incrementos nas remoções de DQO e produções de H2 e CH4. Neste contexto, o objetivo deste trabalho foi avaliar a co-digestão de soro de queijo e glicerol em reator anaeróbio de leito fluidizado (RALF) utilizando processo dois estágios, e verificar como a taxa de carregamento orgânico (TCO) e temperatura afetaram a produção de H2 e CH4. Assim, a co-digestão foi realizada em reator metanogênico termofílico de estágio único (RU-T) com TCO de 2 a 20 gDQO.L-1.d-1 aplicando tempo de detenção hidráulico (TDH) de 24 h. Após determinada a concentração ótima, o efeito do TDH foi avaliado em 24, 20 e 16 h. No processo em dois estágios, a TCO do reator acidogênico do primeiro estágio (RA-T) foi aumentada de 60 a 120 gDQO.L-1.d-1 (TDH 4 h). No reator metanogênico do segundo estágio além do aumento da TCO de 2 a 20 gDQO.L-1.d-1 (TDH de 24 h), foi investigado o efeito da temperatura utilizando um reator termofílico (RS-T) e um mesofílico (RS-M). No RU-T, a TCO de 10 gDQO.L-1.d-1 apresentou o melhor desempenho, com rendimento de metano (MY) de 253,0 NmL CH4.gDQO-1cons e produção volumétrica de metano (PVM) de 3,2 L CH4.L-1.d-1. Na avaliação do TDH, o TDH de 20 h forneceu o MY máximo de 292,5 NmL CH4.gDQO-1cons, enquanto a PVM máxima foi observada no TDH de 16 h (5,1 L CH4.L-1.d-1). Ácido acético e propiônico foram os metabólitos dominantes. No processo em dois estágios, o RA-T forneceu rendimento e produção volumétrica de hidrogênio de 1,7 mmol H2.gDQO-1apli e 3,9 L H2.L-1.d-1, ambos na TCO de 90 gDQO.L-1.d-1, tendo como principais metabólitos ácido butírico e acético. O RS-M produziu os maiores MY e PVM, iguais a 273,2 NmL CH4.gDQO-1cons e 5,8 L CH4.L-1.d-1 na TCO de 20 gDQO.L-1.d-1. Já o RS-T exibiu MY de 269,9 NmL CH4.gDQO-1cons na TCO 10 gDQO.L-1.d-1 e PVM de 4,4 L CH4.L-1.d-1 em 20 gDQO.L-1.d-1. Ácido acético e isobutírico foram os principais metabólitos. Por meio de análise de sequenciamento, identificou-se como gênero dominante no RA-T Themoanaerobacterium. No RS-M e RU-T as archaeas mais abundantes foram do gênero Methanobacterium e no RS-T Methanothermobacter. De forma geral, atesta-se que TCO acima de 10 gDQO.L-1.d-1 foi prejudicial ao RU-T e RS-T, enquanto o RS-M demonstrou estabilidade em 20 gDQO.L-1.d-1. O processo em dois estágios exibiu melhor desempenho, entretanto, considerando os resultados da avaliação do TDH no RU-T, verifica-se a possibilidade de aplicar menores TDH no segundo estágio para maiores produções de CH4.Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)Processo nº 88882.332804/2019-01porUniversidade Federal de São CarlosCâmpus São CarlosPrograma de Pós-Graduação em Engenharia Química - PPGEQUFSCarAttribution-NonCommercial-NoDerivs 3.0 Brazilhttp://creativecommons.org/licenses/by-nc-nd/3.0/br/info:eu-repo/semantics/openAccessEfeito da TCOEfeito da temperaturaDois estágiosGlicerina16S rRNAOLR effectTemperature effectTwo-stageGlycerinENGENHARIAS::ENGENHARIA QUIMICA::OPERACOES INDUSTRIAIS E EQUIPAMENTOS PARA ENGENHARIA QUIMICAProdução de hidrogênio e metano a partir da co-digestão de soro de queijo e glicerol em reator anaeróbio de leito fluidizadoProduction of hydrogen and methane from the co-digestion of cheese whey and glycerol in an anaerobic fluidized bed reactorinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/doctoralThesis600600a97a1394-e7be-4391-bdc1-1698a331652ereponame:Repositório Institucional da UFSCARinstname:Universidade Federal de São Carlos (UFSCAR)instacron:UFSCARORIGINALTese_Priscilla_Almeida_corrigida.pdfTese_Priscilla_Almeida_corrigida.pdfTese Priscilla de Souza Almeidaapplication/pdf2701157https://repositorio.ufscar.br/bitstream/ufscar/15680/1/Tese_Priscilla_Almeida_corrigida.pdf7e108650e381eb18f5ef9cfc5fd6b4deMD51Carta-Comprovante-Tese Priscilla - assinada.pdfCarta-Comprovante-Tese Priscilla - assinada.pdfCarta comprovanteapplication/pdf227385https://repositorio.ufscar.br/bitstream/ufscar/15680/3/Carta-Comprovante-Tese%20Priscilla%20-%20assinada.pdfb272c8aea9d62a522ae4aa4cb754bf39MD53CC-LICENSElicense_rdflicense_rdfapplication/rdf+xml; charset=utf-8811https://repositorio.ufscar.br/bitstream/ufscar/15680/4/license_rdfe39d27027a6cc9cb039ad269a5db8e34MD54TEXTTese_Priscilla_Almeida_corrigida.pdf.txtTese_Priscilla_Almeida_corrigida.pdf.txtExtracted texttext/plain476499https://repositorio.ufscar.br/bitstream/ufscar/15680/5/Tese_Priscilla_Almeida_corrigida.pdf.txt9a265bf55797e24c9db1d022b38f55a1MD55Carta-Comprovante-Tese Priscilla - assinada.pdf.txtCarta-Comprovante-Tese Priscilla - assinada.pdf.txtExtracted texttext/plain1https://repositorio.ufscar.br/bitstream/ufscar/15680/7/Carta-Comprovante-Tese%20Priscilla%20-%20assinada.pdf.txt68b329da9893e34099c7d8ad5cb9c940MD57THUMBNAILTese_Priscilla_Almeida_corrigida.pdf.jpgTese_Priscilla_Almeida_corrigida.pdf.jpgIM Thumbnailimage/jpeg7680https://repositorio.ufscar.br/bitstream/ufscar/15680/6/Tese_Priscilla_Almeida_corrigida.pdf.jpgcb775e424ed53f9fb353c6fd3dfaaa8dMD56Carta-Comprovante-Tese Priscilla - assinada.pdf.jpgCarta-Comprovante-Tese Priscilla - assinada.pdf.jpgIM Thumbnailimage/jpeg11169https://repositorio.ufscar.br/bitstream/ufscar/15680/8/Carta-Comprovante-Tese%20Priscilla%20-%20assinada.pdf.jpg7fb20b0881ddf8de6ab03f1f00e81101MD58ufscar/156802023-09-18 18:32:26.906oai:repositorio.ufscar.br:ufscar/15680Repositório InstitucionalPUBhttps://repositorio.ufscar.br/oai/requestopendoar:43222023-09-18T18:32:26Repositório Institucional da UFSCAR - Universidade Federal de São Carlos (UFSCAR)false |
dc.title.por.fl_str_mv |
Produção de hidrogênio e metano a partir da co-digestão de soro de queijo e glicerol em reator anaeróbio de leito fluidizado |
dc.title.alternative.eng.fl_str_mv |
Production of hydrogen and methane from the co-digestion of cheese whey and glycerol in an anaerobic fluidized bed reactor |
title |
Produção de hidrogênio e metano a partir da co-digestão de soro de queijo e glicerol em reator anaeróbio de leito fluidizado |
spellingShingle |
Produção de hidrogênio e metano a partir da co-digestão de soro de queijo e glicerol em reator anaeróbio de leito fluidizado Almeida, Priscilla de Souza Efeito da TCO Efeito da temperatura Dois estágios Glicerina 16S rRNA OLR effect Temperature effect Two-stage Glycerin ENGENHARIAS::ENGENHARIA QUIMICA::OPERACOES INDUSTRIAIS E EQUIPAMENTOS PARA ENGENHARIA QUIMICA |
title_short |
Produção de hidrogênio e metano a partir da co-digestão de soro de queijo e glicerol em reator anaeróbio de leito fluidizado |
title_full |
Produção de hidrogênio e metano a partir da co-digestão de soro de queijo e glicerol em reator anaeróbio de leito fluidizado |
title_fullStr |
Produção de hidrogênio e metano a partir da co-digestão de soro de queijo e glicerol em reator anaeróbio de leito fluidizado |
title_full_unstemmed |
Produção de hidrogênio e metano a partir da co-digestão de soro de queijo e glicerol em reator anaeróbio de leito fluidizado |
title_sort |
Produção de hidrogênio e metano a partir da co-digestão de soro de queijo e glicerol em reator anaeróbio de leito fluidizado |
author |
Almeida, Priscilla de Souza |
author_facet |
Almeida, Priscilla de Souza |
author_role |
author |
dc.contributor.authorlattes.por.fl_str_mv |
http://lattes.cnpq.br/1732909136264562 |
dc.contributor.author.fl_str_mv |
Almeida, Priscilla de Souza |
dc.contributor.advisor1.fl_str_mv |
Silva, Edson Luiz |
dc.contributor.advisor1Lattes.fl_str_mv |
http://lattes.cnpq.br/9720274214573371 |
dc.contributor.authorID.fl_str_mv |
fc3e1405-53d9-4858-a9e3-ecba7c2e0a2b |
contributor_str_mv |
Silva, Edson Luiz |
dc.subject.por.fl_str_mv |
Efeito da TCO Efeito da temperatura Dois estágios Glicerina 16S rRNA |
topic |
Efeito da TCO Efeito da temperatura Dois estágios Glicerina 16S rRNA OLR effect Temperature effect Two-stage Glycerin ENGENHARIAS::ENGENHARIA QUIMICA::OPERACOES INDUSTRIAIS E EQUIPAMENTOS PARA ENGENHARIA QUIMICA |
dc.subject.eng.fl_str_mv |
OLR effect Temperature effect Two-stage Glycerin |
dc.subject.cnpq.fl_str_mv |
ENGENHARIAS::ENGENHARIA QUIMICA::OPERACOES INDUSTRIAIS E EQUIPAMENTOS PARA ENGENHARIA QUIMICA |
description |
Cheese whey and glycerol are by-products of the dairy and biodiesel industry, respectively. Both by-products are highly produced and can be used in the anaerobic digestion process for energy generation due to their high organic content. The adoption of two-stage anaerobic digestion associated with the application of co-substrates brings several advantages, such as increases in COD removal and production of H2 and CH4. In this context, the objective of this research was to evaluate the co-digestion of cheese whey and glycerol in an anaerobic fluidized bed reactor (AFBR) using a two-stage process, and to verify the effect of organic loading rate (OLR) and temperature on the production of H2 and CH4. Thus, the co-digestion was performed in a thermophilic methanogenic reactor (RU-T) by increasing the OLR from 2 to 20 gCOD.L-1.d-1, with a hydraulic retention time (HRT) of 24 h. After the optimal concentration determination, the HRT was decrease from 24 to 20 and 16 h. For the two-stage process, the OLR of the acidogenic reactor (RA-T) was increased from 60 to 120 gCOD.L-1.d-1 (HRT 4 h) and of the methanogenic reactor from 2 to 20 gCOD.L-1.d-1 (HRT 24 h). Besides, the effect of temperature was investigated in the second stage using a thermophilic (RS-T) and a mesophilic (RS-M) methanogenic reactor. RU-T showed the best performance in the OLR of 10 gCOD.L-1.d-1, with methane yield (MY) of 253.0 NmL CH4.gCOD-1rem and methane production rate (MPR) of 3.2 L CH4.L-1.d-1. In the HRT evaluation, the HRT of 20 h provided the maximum MY of 292.5 NmL CH4.gCOD-1rem, while the maximum MPR was observed in the HRT of 16 h (5.1 L CH4.L-1.d-1). Acetic and propionic acid were the dominant metabolites. Regarding the two-stage process, the RA-T provided a yield of 1.7 mmol H2.gCOD-1app and hydrogen production rate of 3.9 L H2.L-1.d-1, both in the OLR of 90 gCOD.L-1.d-1, with butyric and acetic acid as main metabolites. RS-M produced the highest MY and MPR, equal to 273.2 NmL CH4.gCOD-1rem and 5.8 L CH4.L-1.d-1 in the OLR of 20 gCOD.L-1.d-1. The RS-T showed MY of 269.9 NmL CH4.gCOD-1rem in OLR 10 gCOD.L-1.d-1 and MPR of 4.4 L CH4.L-1.d-1 in 20 gCOD.L-1.d-1. Acetic and isobutyric acid were the main metabolites. Through sequencing analysis, was identified as dominant genus in RA-T Themoanaerobacterium. Archaeas of the genus Methanobacterium was the most abundant in RS-M and RU-T, while the genus Methanothermobacter was in RS-T. In general, it is verified that OLR above 10 gCOD.L-1.d-1 was harmful to RU-T and RS-T, while RS-M showed stability at 20 gCOD.L-1.d-1. The two-stage process showed better performance, however, considering the results of the HRT evaluation in the RU-T, there is the possibility of applying smaller HRT in the second stage for higher CH4 production. |
publishDate |
2021 |
dc.date.issued.fl_str_mv |
2021-12-14 |
dc.date.accessioned.fl_str_mv |
2022-03-08T20:26:12Z |
dc.date.available.fl_str_mv |
2022-03-08T20:26:12Z |
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info:eu-repo/semantics/publishedVersion |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/doctoralThesis |
format |
doctoralThesis |
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publishedVersion |
dc.identifier.citation.fl_str_mv |
ALMEIDA, Priscilla de Souza. Produção de hidrogênio e metano a partir da co-digestão de soro de queijo e glicerol em reator anaeróbio de leito fluidizado. 2021. Tese (Doutorado em Engenharia Química) – Universidade Federal de São Carlos, São Carlos, 2021. Disponível em: https://repositorio.ufscar.br/handle/ufscar/15680. |
dc.identifier.uri.fl_str_mv |
https://repositorio.ufscar.br/handle/ufscar/15680 |
identifier_str_mv |
ALMEIDA, Priscilla de Souza. Produção de hidrogênio e metano a partir da co-digestão de soro de queijo e glicerol em reator anaeróbio de leito fluidizado. 2021. Tese (Doutorado em Engenharia Química) – Universidade Federal de São Carlos, São Carlos, 2021. Disponível em: https://repositorio.ufscar.br/handle/ufscar/15680. |
url |
https://repositorio.ufscar.br/handle/ufscar/15680 |
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Attribution-NonCommercial-NoDerivs 3.0 Brazil http://creativecommons.org/licenses/by-nc-nd/3.0/br/ info:eu-repo/semantics/openAccess |
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Attribution-NonCommercial-NoDerivs 3.0 Brazil http://creativecommons.org/licenses/by-nc-nd/3.0/br/ |
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openAccess |
dc.publisher.none.fl_str_mv |
Universidade Federal de São Carlos Câmpus São Carlos |
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Programa de Pós-Graduação em Engenharia Química - PPGEQ |
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UFSCar |
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Universidade Federal de São Carlos Câmpus São Carlos |
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