Chlorella sp. coagulation‐flocculation by inducing a modification on the pH broth medium

Detalhes bibliográficos
Autor(a) principal: Montes, Daniel dos Reis Fernandes
Data de Publicação: 2010
Tipo de documento: Dissertação
Idioma: eng
Título da fonte: Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
Texto Completo: http://hdl.handle.net/10362/5985
Resumo: Dissertação apresentada à Faculdade de Ciências e Tecnologia da Universidade Nova de Lisboa para a obtenção do grau de Mestre em Bioenergia
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spelling Chlorella sp. coagulation‐flocculation by inducing a modification on the pH broth mediumChlorellaBiodieselHarvestingZeta potentialJar­‐testingAutoflocculationDissertação apresentada à Faculdade de Ciências e Tecnologia da Universidade Nova de Lisboa para a obtenção do grau de Mestre em BioenergiaHarvesting algae from the culture medium is a major area of R&D as it is one of the greater obstacles for marketing microalgal oil for biodiesel production at competitive costs when compared to vegetable oils. Former investigations of large scale algae harvesting especially examine the removal of freshwater algal populations from wastewater treatment processes using metal salts like ferric chloride or aluminum sulfate were used.These are effective coagulation-­flocculation agents, but, besides of being expensive, their application can be unacceptable if the oil will be used for biodiesel production and the biomass for animal feeding, since the contamination of such products with metals will occur. Indeed, methods based on autoflocculation, biofloculation or even new technologies like electrolytic flotation are promising and could be of very low cost. However, for the moment they require very specific situations and provide significant operating limitations. Chlorella characteristics shown to impact on aggregation and flocculation like size, surface functional groups and surface charge were analyzed. Effectiveness of microalgae flocculation by pH manipulation and ionic strength effects were investigated using the Jar-­test procedure. A relationship between cell surface at different incubation stages and negative zeta potential for a wide range of pH was checked and it was found that algae removal was not significantly affected by ionic strength.Faculdade de Ciências e TecnologiaLapa, NunoOlson, LarryRUNMontes, Daniel dos Reis Fernandes2011-07-20T10:07:45Z20102010-01-01T00:00:00Zinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/masterThesisapplication/pdfhttp://hdl.handle.net/10362/5985enginfo: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:RCAAP2024-03-11T03:36:58Zoai:run.unl.pt:10362/5985Portal AgregadorONGhttps://www.rcaap.pt/oai/openaireopendoar:71602024-03-20T03:16:39.652547Repositório 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 Chlorella sp. coagulation‐flocculation by inducing a modification on the pH broth medium
title Chlorella sp. coagulation‐flocculation by inducing a modification on the pH broth medium
spellingShingle Chlorella sp. coagulation‐flocculation by inducing a modification on the pH broth medium
Montes, Daniel dos Reis Fernandes
Chlorella
Biodiesel
Harvesting
Zeta potential
Jar­‐testing
Autoflocculation
title_short Chlorella sp. coagulation‐flocculation by inducing a modification on the pH broth medium
title_full Chlorella sp. coagulation‐flocculation by inducing a modification on the pH broth medium
title_fullStr Chlorella sp. coagulation‐flocculation by inducing a modification on the pH broth medium
title_full_unstemmed Chlorella sp. coagulation‐flocculation by inducing a modification on the pH broth medium
title_sort Chlorella sp. coagulation‐flocculation by inducing a modification on the pH broth medium
author Montes, Daniel dos Reis Fernandes
author_facet Montes, Daniel dos Reis Fernandes
author_role author
dc.contributor.none.fl_str_mv Lapa, Nuno
Olson, Larry
RUN
dc.contributor.author.fl_str_mv Montes, Daniel dos Reis Fernandes
dc.subject.por.fl_str_mv Chlorella
Biodiesel
Harvesting
Zeta potential
Jar­‐testing
Autoflocculation
topic Chlorella
Biodiesel
Harvesting
Zeta potential
Jar­‐testing
Autoflocculation
description Dissertação apresentada à Faculdade de Ciências e Tecnologia da Universidade Nova de Lisboa para a obtenção do grau de Mestre em Bioenergia
publishDate 2010
dc.date.none.fl_str_mv 2010
2010-01-01T00:00:00Z
2011-07-20T10:07:45Z
dc.type.status.fl_str_mv info:eu-repo/semantics/publishedVersion
dc.type.driver.fl_str_mv info:eu-repo/semantics/masterThesis
format masterThesis
status_str publishedVersion
dc.identifier.uri.fl_str_mv http://hdl.handle.net/10362/5985
url http://hdl.handle.net/10362/5985
dc.language.iso.fl_str_mv eng
language eng
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 Faculdade de Ciências e Tecnologia
publisher.none.fl_str_mv Faculdade de Ciências e Tecnologia
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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