Valorization of a Pulp Industry By-Product through the Production of Short-Chain Organic Acids
Autor(a) principal: | |
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Data de Publicação: | 2017 |
Outros Autores: | , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
Texto Completo: | http://hdl.handle.net/10773/22651 |
Resumo: | In this work, hardwood sulfite spent liquor (HSSL)—a by-product from a pulp and paper industry—was used as substrate to produce short-chain organic acids (SCOAs) through acidogenic fermentation. SCOAs have a broad range of applications, including the production of biopolymers, bioenergy, and biological removal of nutrients from wastewaters. A continuous stirred tank reactor (CSTR) configuration was chosen to impose selective pressure conditions. The CSTR was operated for 88 days at 30 °C, without pH control, and 1.76 days of hydraulic and sludge retention times were imposed. The culture required 46 days to adapt to the conditions imposed, reaching a pseudo-steady state after this period. The maximum concentration of SCOAs produced occurred on day 71—7.0 g carbon oxygen demand (COD)/L that corresponded to a degree of acidification of 36%. Acetate, propionate, butyrate, valerate, and lactate were the SCOAs produced throughout the 88 days, with an average proportion of 59:17:19:1.0:4.0%, respectively. |
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Valorization of a Pulp Industry By-Product through the Production of Short-Chain Organic AcidsShort-chain organic acidsHardwood sulfite spent liquorActivated sludgeAcidogenic fermentationMixed microbial culturesIn this work, hardwood sulfite spent liquor (HSSL)—a by-product from a pulp and paper industry—was used as substrate to produce short-chain organic acids (SCOAs) through acidogenic fermentation. SCOAs have a broad range of applications, including the production of biopolymers, bioenergy, and biological removal of nutrients from wastewaters. A continuous stirred tank reactor (CSTR) configuration was chosen to impose selective pressure conditions. The CSTR was operated for 88 days at 30 °C, without pH control, and 1.76 days of hydraulic and sludge retention times were imposed. The culture required 46 days to adapt to the conditions imposed, reaching a pseudo-steady state after this period. The maximum concentration of SCOAs produced occurred on day 71—7.0 g carbon oxygen demand (COD)/L that corresponded to a degree of acidification of 36%. Acetate, propionate, butyrate, valerate, and lactate were the SCOAs produced throughout the 88 days, with an average proportion of 59:17:19:1.0:4.0%, respectively.MDPI2018-03-15T12:33:17Z2017-05-12T00:00:00Z2017-05-12info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleapplication/pdfhttp://hdl.handle.net/10773/22651eng2311-563710.3390/fermentation3020020Queirós, DiogoSousa, RitaPereira, SusanaSerafim, Luísa Seuanesinfo:eu-repo/semantics/openAccessreponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãoinstacron:RCAAP2024-02-22T11:44:18Zoai:ria.ua.pt:10773/22651Portal AgregadorONGhttps://www.rcaap.pt/oai/openaireopendoar:71602024-03-20T02:56:43.042486Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãofalse |
dc.title.none.fl_str_mv |
Valorization of a Pulp Industry By-Product through the Production of Short-Chain Organic Acids |
title |
Valorization of a Pulp Industry By-Product through the Production of Short-Chain Organic Acids |
spellingShingle |
Valorization of a Pulp Industry By-Product through the Production of Short-Chain Organic Acids Queirós, Diogo Short-chain organic acids Hardwood sulfite spent liquor Activated sludge Acidogenic fermentation Mixed microbial cultures |
title_short |
Valorization of a Pulp Industry By-Product through the Production of Short-Chain Organic Acids |
title_full |
Valorization of a Pulp Industry By-Product through the Production of Short-Chain Organic Acids |
title_fullStr |
Valorization of a Pulp Industry By-Product through the Production of Short-Chain Organic Acids |
title_full_unstemmed |
Valorization of a Pulp Industry By-Product through the Production of Short-Chain Organic Acids |
title_sort |
Valorization of a Pulp Industry By-Product through the Production of Short-Chain Organic Acids |
author |
Queirós, Diogo |
author_facet |
Queirós, Diogo Sousa, Rita Pereira, Susana Serafim, Luísa Seuanes |
author_role |
author |
author2 |
Sousa, Rita Pereira, Susana Serafim, Luísa Seuanes |
author2_role |
author author author |
dc.contributor.author.fl_str_mv |
Queirós, Diogo Sousa, Rita Pereira, Susana Serafim, Luísa Seuanes |
dc.subject.por.fl_str_mv |
Short-chain organic acids Hardwood sulfite spent liquor Activated sludge Acidogenic fermentation Mixed microbial cultures |
topic |
Short-chain organic acids Hardwood sulfite spent liquor Activated sludge Acidogenic fermentation Mixed microbial cultures |
description |
In this work, hardwood sulfite spent liquor (HSSL)—a by-product from a pulp and paper industry—was used as substrate to produce short-chain organic acids (SCOAs) through acidogenic fermentation. SCOAs have a broad range of applications, including the production of biopolymers, bioenergy, and biological removal of nutrients from wastewaters. A continuous stirred tank reactor (CSTR) configuration was chosen to impose selective pressure conditions. The CSTR was operated for 88 days at 30 °C, without pH control, and 1.76 days of hydraulic and sludge retention times were imposed. The culture required 46 days to adapt to the conditions imposed, reaching a pseudo-steady state after this period. The maximum concentration of SCOAs produced occurred on day 71—7.0 g carbon oxygen demand (COD)/L that corresponded to a degree of acidification of 36%. Acetate, propionate, butyrate, valerate, and lactate were the SCOAs produced throughout the 88 days, with an average proportion of 59:17:19:1.0:4.0%, respectively. |
publishDate |
2017 |
dc.date.none.fl_str_mv |
2017-05-12T00:00:00Z 2017-05-12 2018-03-15T12:33:17Z |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
http://hdl.handle.net/10773/22651 |
url |
http://hdl.handle.net/10773/22651 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
2311-5637 10.3390/fermentation3020020 |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
application/pdf |
dc.publisher.none.fl_str_mv |
MDPI |
publisher.none.fl_str_mv |
MDPI |
dc.source.none.fl_str_mv |
reponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação instacron:RCAAP |
instname_str |
Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação |
instacron_str |
RCAAP |
institution |
RCAAP |
reponame_str |
Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
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Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
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Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação |
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1799137620775665664 |