Bioethanol production from Scenedesmus obliquus sugars: the influence of photobioreactors and culture conditions on biomass production
Autor(a) principal: | |
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Data de Publicação: | 2012 |
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/10400.9/1680 |
Resumo: | A closed-loop vertical tubular photobioreactor (PBR), specially designed to operate under conditions of scarce flat land availability and irregular solar irradiance conditions, was used to study the potential of Scenedesmus obliquus biomass/sugar production. The results obtained were compared to those from an open-raceway pond and a closed-bubble column. The influence of the type of light source and the regime (natural vs artificial and continuous vs light/dark cycles) on the growth of the microalga and the extent of the sugar accumulation was studied in both PBRs. The best type of reactor studied was a closed-loop PBR illuminated with natural light/dark cycles. In all the cases, the relationship between the nitrate depletion and the sugar accumulation was observed. The microalga Scenedesmus was cultivated for 53 days in a raceway pond (4,500 L) and accumulated a maximum sugar content of 29 % g/g. It was pre-treated for carrying out ethanol fermentation assays, and the highest ethanol concentration obtained in the hydrolysate fermented by Kluyveromyces marxianus was 11.7 g/L. |
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Bioethanol production from Scenedesmus obliquus sugars: the influence of photobioreactors and culture conditions on biomass productionScenedesmus obliquusPhotobioreactorsLightSugarsBioethanolA closed-loop vertical tubular photobioreactor (PBR), specially designed to operate under conditions of scarce flat land availability and irregular solar irradiance conditions, was used to study the potential of Scenedesmus obliquus biomass/sugar production. The results obtained were compared to those from an open-raceway pond and a closed-bubble column. The influence of the type of light source and the regime (natural vs artificial and continuous vs light/dark cycles) on the growth of the microalga and the extent of the sugar accumulation was studied in both PBRs. The best type of reactor studied was a closed-loop PBR illuminated with natural light/dark cycles. In all the cases, the relationship between the nitrate depletion and the sugar accumulation was observed. The microalga Scenedesmus was cultivated for 53 days in a raceway pond (4,500 L) and accumulated a maximum sugar content of 29 % g/g. It was pre-treated for carrying out ethanol fermentation assays, and the highest ethanol concentration obtained in the hydrolysate fermented by Kluyveromyces marxianus was 11.7 g/L.Springer-VerlagRepositório do LNEGMiranda, J. R.Passarinho, PaulaGouveia, Luisa2013-03-06T14:30:03Z20122012-01-01T00:00:00Zinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleapplication/pdfhttp://hdl.handle.net/10400.9/1680engMiranda, J.R.; Passarinho, P.C.; Gouveia, L. Bioethanol production from Scenedesmus obliquus sugars: the influence of photobioreactors and culture conditions on biomass production. In: Applied Microbiology and Biotechnology, 2012, vol. 96, nº 2, p. 555-5640175-7598info: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:RCAAP2023-07-23T06:27:09Zoai:repositorio.lneg.pt:10400.9/1680Portal AgregadorONGhttps://www.rcaap.pt/oai/openaireopendoar:71602024-03-19T15:34:27.516127Repositório 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 |
Bioethanol production from Scenedesmus obliquus sugars: the influence of photobioreactors and culture conditions on biomass production |
title |
Bioethanol production from Scenedesmus obliquus sugars: the influence of photobioreactors and culture conditions on biomass production |
spellingShingle |
Bioethanol production from Scenedesmus obliquus sugars: the influence of photobioreactors and culture conditions on biomass production Miranda, J. R. Scenedesmus obliquus Photobioreactors Light Sugars Bioethanol |
title_short |
Bioethanol production from Scenedesmus obliquus sugars: the influence of photobioreactors and culture conditions on biomass production |
title_full |
Bioethanol production from Scenedesmus obliquus sugars: the influence of photobioreactors and culture conditions on biomass production |
title_fullStr |
Bioethanol production from Scenedesmus obliquus sugars: the influence of photobioreactors and culture conditions on biomass production |
title_full_unstemmed |
Bioethanol production from Scenedesmus obliquus sugars: the influence of photobioreactors and culture conditions on biomass production |
title_sort |
Bioethanol production from Scenedesmus obliquus sugars: the influence of photobioreactors and culture conditions on biomass production |
author |
Miranda, J. R. |
author_facet |
Miranda, J. R. Passarinho, Paula Gouveia, Luisa |
author_role |
author |
author2 |
Passarinho, Paula Gouveia, Luisa |
author2_role |
author author |
dc.contributor.none.fl_str_mv |
Repositório do LNEG |
dc.contributor.author.fl_str_mv |
Miranda, J. R. Passarinho, Paula Gouveia, Luisa |
dc.subject.por.fl_str_mv |
Scenedesmus obliquus Photobioreactors Light Sugars Bioethanol |
topic |
Scenedesmus obliquus Photobioreactors Light Sugars Bioethanol |
description |
A closed-loop vertical tubular photobioreactor (PBR), specially designed to operate under conditions of scarce flat land availability and irregular solar irradiance conditions, was used to study the potential of Scenedesmus obliquus biomass/sugar production. The results obtained were compared to those from an open-raceway pond and a closed-bubble column. The influence of the type of light source and the regime (natural vs artificial and continuous vs light/dark cycles) on the growth of the microalga and the extent of the sugar accumulation was studied in both PBRs. The best type of reactor studied was a closed-loop PBR illuminated with natural light/dark cycles. In all the cases, the relationship between the nitrate depletion and the sugar accumulation was observed. The microalga Scenedesmus was cultivated for 53 days in a raceway pond (4,500 L) and accumulated a maximum sugar content of 29 % g/g. It was pre-treated for carrying out ethanol fermentation assays, and the highest ethanol concentration obtained in the hydrolysate fermented by Kluyveromyces marxianus was 11.7 g/L. |
publishDate |
2012 |
dc.date.none.fl_str_mv |
2012 2012-01-01T00:00:00Z 2013-03-06T14:30:03Z |
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/10400.9/1680 |
url |
http://hdl.handle.net/10400.9/1680 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
Miranda, J.R.; Passarinho, P.C.; Gouveia, L. Bioethanol production from Scenedesmus obliquus sugars: the influence of photobioreactors and culture conditions on biomass production. In: Applied Microbiology and Biotechnology, 2012, vol. 96, nº 2, p. 555-564 0175-7598 |
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 |
Springer-Verlag |
publisher.none.fl_str_mv |
Springer-Verlag |
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 |
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Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação |
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RCAAP |
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RCAAP |
reponame_str |
Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
collection |
Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
repository.name.fl_str_mv |
Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação |
repository.mail.fl_str_mv |
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1799130209348222976 |