Chemical and physical pretreatments of microalgal biomass

Detalhes bibliográficos
Autor(a) principal: Rodrigues, Brígida
Data de Publicação: 2020
Outros Autores: Borges, Rodrigo, Castro, Maria, Constantino, Ana, Raposo, Sara
Idioma: eng
Título da fonte: Repositórios Científicos de Acesso Aberto de Portugal (RCAAP)
Texto Completo: http://hdl.handle.net/10400.1/13877
Resumo: Non-axenic microalga Chlorella sorokiniana was cultivated in batch cultures, and its total sugar composition was determined. The microalga under study showed a total sugar concentration of 21.44 ± 0.46% (w/w). The effects of freeze-drying, oven-drying, freezing and thawing, chemical and the combination of hydrothermal and chemical pretreatments were evaluated. In the combined pretreatment different concentrations of H2SO4 and reaction times were also optimized. It was possible to determine that the sugar extraction yields more significant were 59.5% for the lyophilization, 6.2% with 6 cycles of freeze and thawing and around 100% for 2 and 4% (v/v) of H2SO4 at 121 °C for 30 min. Some of the methods that were described in this study are interesting to facilitate cost-efficient conversion of microalgal biomass into biofuels.
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spelling Chemical and physical pretreatments of microalgal biomassChlorella sorokinianaPretreatmentCarbohydratesBioethanolNon-axenic microalga Chlorella sorokiniana was cultivated in batch cultures, and its total sugar composition was determined. The microalga under study showed a total sugar concentration of 21.44 ± 0.46% (w/w). The effects of freeze-drying, oven-drying, freezing and thawing, chemical and the combination of hydrothermal and chemical pretreatments were evaluated. In the combined pretreatment different concentrations of H2SO4 and reaction times were also optimized. It was possible to determine that the sugar extraction yields more significant were 59.5% for the lyophilization, 6.2% with 6 cycles of freeze and thawing and around 100% for 2 and 4% (v/v) of H2SO4 at 121 °C for 30 min. Some of the methods that were described in this study are interesting to facilitate cost-efficient conversion of microalgal biomass into biofuels.SpringerSapientiaRodrigues, BrígidaBorges, RodrigoCastro, MariaConstantino, AnaRaposo, Sara2020-05-12T13:53:31Z20202020-01-01T00:00:00Zbook partinfo:eu-repo/semantics/publishedVersionapplication/pdfhttp://hdl.handle.net/10400.1/13877eng978-3-030-30937-410.1007/978-3-030-30938-1_32info:eu-repo/semantics/openAccessreponame:Repositórios Científicos de Acesso Aberto de Portugal (RCAAP)instname:FCCN, serviços digitais da FCT – Fundação para a Ciência e a Tecnologiainstacron:RCAAP2025-02-18T17:26:58Zoai:sapientia.ualg.pt:10400.1/13877Portal AgregadorONGhttps://www.rcaap.pt/oai/openaireinfo@rcaap.ptopendoar:https://opendoar.ac.uk/repository/71602025-05-28T20:22:26.275094Repositórios Científicos de Acesso Aberto de Portugal (RCAAP) - FCCN, serviços digitais da FCT – Fundação para a Ciência e a Tecnologiafalse
dc.title.none.fl_str_mv Chemical and physical pretreatments of microalgal biomass
title Chemical and physical pretreatments of microalgal biomass
spellingShingle Chemical and physical pretreatments of microalgal biomass
Rodrigues, Brígida
Chlorella sorokiniana
Pretreatment
Carbohydrates
Bioethanol
title_short Chemical and physical pretreatments of microalgal biomass
title_full Chemical and physical pretreatments of microalgal biomass
title_fullStr Chemical and physical pretreatments of microalgal biomass
title_full_unstemmed Chemical and physical pretreatments of microalgal biomass
title_sort Chemical and physical pretreatments of microalgal biomass
author Rodrigues, Brígida
author_facet Rodrigues, Brígida
Borges, Rodrigo
Castro, Maria
Constantino, Ana
Raposo, Sara
author_role author
author2 Borges, Rodrigo
Castro, Maria
Constantino, Ana
Raposo, Sara
author2_role author
author
author
author
dc.contributor.none.fl_str_mv Sapientia
dc.contributor.author.fl_str_mv Rodrigues, Brígida
Borges, Rodrigo
Castro, Maria
Constantino, Ana
Raposo, Sara
dc.subject.por.fl_str_mv Chlorella sorokiniana
Pretreatment
Carbohydrates
Bioethanol
topic Chlorella sorokiniana
Pretreatment
Carbohydrates
Bioethanol
description Non-axenic microalga Chlorella sorokiniana was cultivated in batch cultures, and its total sugar composition was determined. The microalga under study showed a total sugar concentration of 21.44 ± 0.46% (w/w). The effects of freeze-drying, oven-drying, freezing and thawing, chemical and the combination of hydrothermal and chemical pretreatments were evaluated. In the combined pretreatment different concentrations of H2SO4 and reaction times were also optimized. It was possible to determine that the sugar extraction yields more significant were 59.5% for the lyophilization, 6.2% with 6 cycles of freeze and thawing and around 100% for 2 and 4% (v/v) of H2SO4 at 121 °C for 30 min. Some of the methods that were described in this study are interesting to facilitate cost-efficient conversion of microalgal biomass into biofuels.
publishDate 2020
dc.date.none.fl_str_mv 2020-05-12T13:53:31Z
2020
2020-01-01T00:00:00Z
dc.type.driver.fl_str_mv book part
dc.type.status.fl_str_mv info:eu-repo/semantics/publishedVersion
status_str publishedVersion
dc.identifier.uri.fl_str_mv http://hdl.handle.net/10400.1/13877
url http://hdl.handle.net/10400.1/13877
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv 978-3-030-30937-4
10.1007/978-3-030-30938-1_32
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
publisher.none.fl_str_mv Springer
dc.source.none.fl_str_mv reponame:Repositórios Científicos de Acesso Aberto de Portugal (RCAAP)
instname:FCCN, serviços digitais da FCT – Fundação para a Ciência e a Tecnologia
instacron:RCAAP
instname_str FCCN, serviços digitais da FCT – Fundação para a Ciência e a Tecnologia
instacron_str RCAAP
institution RCAAP
reponame_str Repositórios Científicos de Acesso Aberto de Portugal (RCAAP)
collection Repositórios Científicos de Acesso Aberto de Portugal (RCAAP)
repository.name.fl_str_mv Repositórios Científicos de Acesso Aberto de Portugal (RCAAP) - FCCN, serviços digitais da FCT – Fundação para a Ciência e a Tecnologia
repository.mail.fl_str_mv info@rcaap.pt
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