On-line control of light intensity in a microalgal bioreactor using a novel automatic system

Detalhes bibliográficos
Autor(a) principal: Meireles, Luís A.
Data de Publicação: 2008
Outros Autores: Guedes, A. Catarina, Barbosa, Catarina R., Azevedo, José L., Cunha, João P., Malcata, F. Xavier
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
Texto Completo: http://hdl.handle.net/10400.14/2746
Resumo: The influence of light intensity upon biomass and fatty acid productivity by the microalga Pavlova lutheri was experimentally studied using a novel device. This device was designed to automatically adjust light intensity in a photobioreactor: it takes on-line measurements of biomass concentration, and was successfully tested to implement a feedback control of light based on the growth rate variation. Using said device, batch and semicontinuous cultures of P. lutheri were maintained at maximum growth rates and biomass productivities – hence avoiding photoinhibition, and consequent waste of radiant energy. Several cultures were run with said device, and their performances were compared with those of control cultures submitted to constant light intensity; the biomass levels attained, as well as the yields of eicosapentaenoic and docosahexaenoic acids were calculated – and were consistently higher than those of their uncontrolled counterpart.
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spelling On-line control of light intensity in a microalgal bioreactor using a novel automatic systemPavlova lutheriEPADHABiomass on-line measurementThe influence of light intensity upon biomass and fatty acid productivity by the microalga Pavlova lutheri was experimentally studied using a novel device. This device was designed to automatically adjust light intensity in a photobioreactor: it takes on-line measurements of biomass concentration, and was successfully tested to implement a feedback control of light based on the growth rate variation. Using said device, batch and semicontinuous cultures of P. lutheri were maintained at maximum growth rates and biomass productivities – hence avoiding photoinhibition, and consequent waste of radiant energy. Several cultures were run with said device, and their performances were compared with those of control cultures submitted to constant light intensity; the biomass levels attained, as well as the yields of eicosapentaenoic and docosahexaenoic acids were calculated – and were consistently higher than those of their uncontrolled counterpart.ElsevierVeritati - Repositório Institucional da Universidade Católica PortuguesaMeireles, Luís A.Guedes, A. CatarinaBarbosa, Catarina R.Azevedo, José L.Cunha, João P.Malcata, F. Xavier2010-10-08T17:57:56Z20082008-01-01T00:00:00Zinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleapplication/pdfhttp://hdl.handle.net/10400.14/2746eng"Enzyme and Microbial Technology". ISSN 0141-0229. 42: 7 (2008) 554–559info: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:RCAAP2023-07-12T17:09:19Zoai:repositorio.ucp.pt:10400.14/2746Portal AgregadorONGhttps://www.rcaap.pt/oai/openaireopendoar:71602024-03-19T18:04:59.444951Repositório 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 On-line control of light intensity in a microalgal bioreactor using a novel automatic system
title On-line control of light intensity in a microalgal bioreactor using a novel automatic system
spellingShingle On-line control of light intensity in a microalgal bioreactor using a novel automatic system
Meireles, Luís A.
Pavlova lutheri
EPA
DHA
Biomass on-line measurement
title_short On-line control of light intensity in a microalgal bioreactor using a novel automatic system
title_full On-line control of light intensity in a microalgal bioreactor using a novel automatic system
title_fullStr On-line control of light intensity in a microalgal bioreactor using a novel automatic system
title_full_unstemmed On-line control of light intensity in a microalgal bioreactor using a novel automatic system
title_sort On-line control of light intensity in a microalgal bioreactor using a novel automatic system
author Meireles, Luís A.
author_facet Meireles, Luís A.
Guedes, A. Catarina
Barbosa, Catarina R.
Azevedo, José L.
Cunha, João P.
Malcata, F. Xavier
author_role author
author2 Guedes, A. Catarina
Barbosa, Catarina R.
Azevedo, José L.
Cunha, João P.
Malcata, F. Xavier
author2_role author
author
author
author
author
dc.contributor.none.fl_str_mv Veritati - Repositório Institucional da Universidade Católica Portuguesa
dc.contributor.author.fl_str_mv Meireles, Luís A.
Guedes, A. Catarina
Barbosa, Catarina R.
Azevedo, José L.
Cunha, João P.
Malcata, F. Xavier
dc.subject.por.fl_str_mv Pavlova lutheri
EPA
DHA
Biomass on-line measurement
topic Pavlova lutheri
EPA
DHA
Biomass on-line measurement
description The influence of light intensity upon biomass and fatty acid productivity by the microalga Pavlova lutheri was experimentally studied using a novel device. This device was designed to automatically adjust light intensity in a photobioreactor: it takes on-line measurements of biomass concentration, and was successfully tested to implement a feedback control of light based on the growth rate variation. Using said device, batch and semicontinuous cultures of P. lutheri were maintained at maximum growth rates and biomass productivities – hence avoiding photoinhibition, and consequent waste of radiant energy. Several cultures were run with said device, and their performances were compared with those of control cultures submitted to constant light intensity; the biomass levels attained, as well as the yields of eicosapentaenoic and docosahexaenoic acids were calculated – and were consistently higher than those of their uncontrolled counterpart.
publishDate 2008
dc.date.none.fl_str_mv 2008
2008-01-01T00:00:00Z
2010-10-08T17:57:56Z
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/10400.14/2746
url http://hdl.handle.net/10400.14/2746
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv "Enzyme and Microbial Technology". ISSN 0141-0229. 42: 7 (2008) 554–559
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 Elsevier
publisher.none.fl_str_mv Elsevier
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)
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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