Comparison and optimization of different methods for Microcystis aeruginosa's harvesting and the role of zeta potential on its efficiency
Autor(a) principal: | |
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Data de Publicação: | 2019 |
Outros Autores: | , , , , , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
Texto Completo: | https://hdl.handle.net/1822/60564 |
Resumo: | This study has compared the harvesting efficiency of four flocculation methods, namely, induced by pH, FeCl3, AlCl3 and chitosan. No changes were observed on M. aeruginosa cells. Flocculation assays performed at pH 3 and 4 have shown the best harvesting efficiency among the pH-induced tests, reaching values above 90% after 8 h. The adjustment of zeta potential (ZP) to values comprised between 6.7 and 20.7 mV enhanced significantly the settling rates using flocculant agents, being FeCl3 the best example where increments up to 88% of harvesting efficiency were obtained. Although all the four methods tested have presented harvesting efficiencies above 91% within the first 8 h after the optimization process, the highest performance was obtained using 3.75 mg L1 of FeCl3, which allowed reaching 92% in 4 h. |
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Comparison and optimization of different methods for Microcystis aeruginosa's harvesting and the role of zeta potential on its efficiencyInduced flocculationZeta potentialHarvesting efficiencyMicrocystis aeruginosaScience & TechnologyThis study has compared the harvesting efficiency of four flocculation methods, namely, induced by pH, FeCl3, AlCl3 and chitosan. No changes were observed on M. aeruginosa cells. Flocculation assays performed at pH 3 and 4 have shown the best harvesting efficiency among the pH-induced tests, reaching values above 90% after 8 h. The adjustment of zeta potential (ZP) to values comprised between 6.7 and 20.7 mV enhanced significantly the settling rates using flocculant agents, being FeCl3 the best example where increments up to 88% of harvesting efficiency were obtained. Although all the four methods tested have presented harvesting efficiencies above 91% within the first 8 h after the optimization process, the highest performance was obtained using 3.75 mg L1 of FeCl3, which allowed reaching 92% in 4 h.This research work was supported by the grants SFRH/BPD/98694/2013 (Bruno Fernandes) and SFRH/BD/52335/2013 (Pedro Geada) from Fundação para a Ciência e a Tecnologia (Portugal). Luís Loureiro is recipient of a fellowship supported by a doctoral advanced training (call NORTE-69-2015-15) funded by the European Social Fund under the scope of Norte2020 - Programa Operacional Regional do Norte. This study was supported by the Portuguese Foundation for Science and Technology (FCT) under the scope of the FCT Strategic funding of UID/BIO/04469/2013 unit and COMPETE 2020 (POCI-01-0145-FEDER-006684) and BioTecNorte operation (NORTE-01-0145-FEDER-000004) funded by the European Regional Development Fund under the scope of Norte2020 - Programa Operacional Regional do Norte. This study was also supported by the Project UID/Multi/04423/2013, the Project RECI/BBB-EBI/0179/2012 (FCOMP-01-0124-FEDER-027462), and the project NOVELMAR (reference NORTE-01-0145-FEDER-000035) co-financed by the North Portugal Regional Operational Programme (Norte 2020) under the National Strategic Reference Framework (NSRF) through the ERDF.info:eu-repo/semantics/publishedVersionSpringer NatureUniversidade do MinhoGeada, PedroOliveira, F.Loureiro, LuísEsteves, D.Teixeira, J. A.Vasconcelos, VítorVicente, A. A.Fernandes, Bruno D.2019-062019-06-01T00:00:00Zinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleapplication/pdfhttps://hdl.handle.net/1822/60564engGeada, Pedro; Oliveira, F.; Luís Loureiro; Esteves, D.; Teixeira, José A.; Vasconcelos, Vítor; Vicente, António A.; Fernandes, Bruno D., Comparison and optimization of different methods for Microcystis aeruginosa's harvesting and the role of zeta potential on its efficiency. Environmental Science and Pollution Research, 26(16), 16708-16715, 20190944-13441614-749910.1007/s11356-019-04803-030993559http://www.springer.com/environment/journal/11356info: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:RCAAP2024-03-16T01:19:53Zoai:repositorium.sdum.uminho.pt:1822/60564Portal AgregadorONGhttps://www.rcaap.pt/oai/openaireopendoar:71602024-03-19T19:48:05.516126Repositório 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 |
Comparison and optimization of different methods for Microcystis aeruginosa's harvesting and the role of zeta potential on its efficiency |
title |
Comparison and optimization of different methods for Microcystis aeruginosa's harvesting and the role of zeta potential on its efficiency |
spellingShingle |
Comparison and optimization of different methods for Microcystis aeruginosa's harvesting and the role of zeta potential on its efficiency Geada, Pedro Induced flocculation Zeta potential Harvesting efficiency Microcystis aeruginosa Science & Technology |
title_short |
Comparison and optimization of different methods for Microcystis aeruginosa's harvesting and the role of zeta potential on its efficiency |
title_full |
Comparison and optimization of different methods for Microcystis aeruginosa's harvesting and the role of zeta potential on its efficiency |
title_fullStr |
Comparison and optimization of different methods for Microcystis aeruginosa's harvesting and the role of zeta potential on its efficiency |
title_full_unstemmed |
Comparison and optimization of different methods for Microcystis aeruginosa's harvesting and the role of zeta potential on its efficiency |
title_sort |
Comparison and optimization of different methods for Microcystis aeruginosa's harvesting and the role of zeta potential on its efficiency |
author |
Geada, Pedro |
author_facet |
Geada, Pedro Oliveira, F. Loureiro, Luís Esteves, D. Teixeira, J. A. Vasconcelos, Vítor Vicente, A. A. Fernandes, Bruno D. |
author_role |
author |
author2 |
Oliveira, F. Loureiro, Luís Esteves, D. Teixeira, J. A. Vasconcelos, Vítor Vicente, A. A. Fernandes, Bruno D. |
author2_role |
author author author author author author author |
dc.contributor.none.fl_str_mv |
Universidade do Minho |
dc.contributor.author.fl_str_mv |
Geada, Pedro Oliveira, F. Loureiro, Luís Esteves, D. Teixeira, J. A. Vasconcelos, Vítor Vicente, A. A. Fernandes, Bruno D. |
dc.subject.por.fl_str_mv |
Induced flocculation Zeta potential Harvesting efficiency Microcystis aeruginosa Science & Technology |
topic |
Induced flocculation Zeta potential Harvesting efficiency Microcystis aeruginosa Science & Technology |
description |
This study has compared the harvesting efficiency of four flocculation methods, namely, induced by pH, FeCl3, AlCl3 and chitosan. No changes were observed on M. aeruginosa cells. Flocculation assays performed at pH 3 and 4 have shown the best harvesting efficiency among the pH-induced tests, reaching values above 90% after 8 h. The adjustment of zeta potential (ZP) to values comprised between 6.7 and 20.7 mV enhanced significantly the settling rates using flocculant agents, being FeCl3 the best example where increments up to 88% of harvesting efficiency were obtained. Although all the four methods tested have presented harvesting efficiencies above 91% within the first 8 h after the optimization process, the highest performance was obtained using 3.75 mg L1 of FeCl3, which allowed reaching 92% in 4 h. |
publishDate |
2019 |
dc.date.none.fl_str_mv |
2019-06 2019-06-01T00:00:00Z |
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 |
https://hdl.handle.net/1822/60564 |
url |
https://hdl.handle.net/1822/60564 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
Geada, Pedro; Oliveira, F.; Luís Loureiro; Esteves, D.; Teixeira, José A.; Vasconcelos, Vítor; Vicente, António A.; Fernandes, Bruno D., Comparison and optimization of different methods for Microcystis aeruginosa's harvesting and the role of zeta potential on its efficiency. Environmental Science and Pollution Research, 26(16), 16708-16715, 2019 0944-1344 1614-7499 10.1007/s11356-019-04803-0 30993559 http://www.springer.com/environment/journal/11356 |
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 Nature |
publisher.none.fl_str_mv |
Springer Nature |
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) |
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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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1799133057967456256 |