Biofuel recovery from microalgae biomass grown in dairy wastewater treated with activated sludge: the next step in sustainable production
Autor(a) principal: | |
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Data de Publicação: | 2022 |
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/10400.9/3882 |
Resumo: | ABSTRACT: Microalgae biofuel could be the next step in avoiding the excessive use of fossil fuels and reducing negative impacts on the environment. In the present study, two species of microalgae (Scenedesmus obliquus and Chlorella vulgaris) were used for biomass production, grown in dairy wastewater treated by activated sludge systems. The photobioreactors were operated in batch and in continuous mode. The dry biomass produced was in the range of 2.30 to 3.10 g L-1. The highest volumetric yields for lipids and carbohydrates were 0.068 and 0.114 g L-1 day(-1). Maximum CO2 biofixation (750 mg L-1 day(-1)) was obtained in continuous mode. The maximum values for lipids (21%) and carbohydrates (39%) were recorded in the batch process with species Scenedesmus obliquus. In all of the experiments, the Linolenic acid concentration (C18:3) was greater than 12%, achieving satisfactory oxidative stability and good quality. Projected biofuel production could vary between 4,863,708 kg and 9,246,456 kg year(-1) if all the dairy wastewater produced in Brazil were used for this purpose. Two hectares would be needed to produce 24,99 x 10(9) L year(-1) of microalgae bioethanol, a far lower value than used in cultivating sugar cane. If all dairy wastewater generated annually in Brazil were used to produce microalgae biomass, it would be possible to obtain approximately 30,609 to 53,647 barrels of biodiesel per year. These data show that only by using dairy wastewater would biofuels be produced to replace 17% to 40% of the fossil fuels currently used in Brazil. |
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Biofuel recovery from microalgae biomass grown in dairy wastewater treated with activated sludge: the next step in sustainable productionBioresourcesRenewable energiesFatty acidsBioremediationBiodieselWastewater treatmentMicroalgal biomassScenedesmus obliquusChlorella VulgarisABSTRACT: Microalgae biofuel could be the next step in avoiding the excessive use of fossil fuels and reducing negative impacts on the environment. In the present study, two species of microalgae (Scenedesmus obliquus and Chlorella vulgaris) were used for biomass production, grown in dairy wastewater treated by activated sludge systems. The photobioreactors were operated in batch and in continuous mode. The dry biomass produced was in the range of 2.30 to 3.10 g L-1. The highest volumetric yields for lipids and carbohydrates were 0.068 and 0.114 g L-1 day(-1). Maximum CO2 biofixation (750 mg L-1 day(-1)) was obtained in continuous mode. The maximum values for lipids (21%) and carbohydrates (39%) were recorded in the batch process with species Scenedesmus obliquus. In all of the experiments, the Linolenic acid concentration (C18:3) was greater than 12%, achieving satisfactory oxidative stability and good quality. Projected biofuel production could vary between 4,863,708 kg and 9,246,456 kg year(-1) if all the dairy wastewater produced in Brazil were used for this purpose. Two hectares would be needed to produce 24,99 x 10(9) L year(-1) of microalgae bioethanol, a far lower value than used in cultivating sugar cane. If all dairy wastewater generated annually in Brazil were used to produce microalgae biomass, it would be possible to obtain approximately 30,609 to 53,647 barrels of biodiesel per year. These data show that only by using dairy wastewater would biofuels be produced to replace 17% to 40% of the fossil fuels currently used in Brazil.ElsevierRepositório do LNEGMendonca, Henrique Vieira deOtenio, Marcelo HenriqueMarchão, LeonildeLomeu, AliceSouza, Denise Salvador deReis, Alberto2022-07-14T10:57:47Z2022-06-01T00:00:00Z2022-06-01T00:00:00Zinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleapplication/pdfhttp://hdl.handle.net/10400.9/3882engMendonça, Henrique Vieira de... [et.al.] - Biofuel recovery from microalgae biomass grown in dairy wastewater treated with activated sludge: the next step in sustainable production. In: Science of the Total Environment, 2022, vol. 824, article nº 1538380048-969710.1016/j.scitotenv.2022.1538381879-1026info: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:RCAAP2022-09-06T12:29:44Zoai:repositorio.lneg.pt:10400.9/3882Portal AgregadorONGhttps://www.rcaap.pt/oai/openaireopendoar:71602024-03-19T15:37:08.375300Repositório 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 |
Biofuel recovery from microalgae biomass grown in dairy wastewater treated with activated sludge: the next step in sustainable production |
title |
Biofuel recovery from microalgae biomass grown in dairy wastewater treated with activated sludge: the next step in sustainable production |
spellingShingle |
Biofuel recovery from microalgae biomass grown in dairy wastewater treated with activated sludge: the next step in sustainable production Mendonca, Henrique Vieira de Bioresources Renewable energies Fatty acids Bioremediation Biodiesel Wastewater treatment Microalgal biomass Scenedesmus obliquus Chlorella Vulgaris |
title_short |
Biofuel recovery from microalgae biomass grown in dairy wastewater treated with activated sludge: the next step in sustainable production |
title_full |
Biofuel recovery from microalgae biomass grown in dairy wastewater treated with activated sludge: the next step in sustainable production |
title_fullStr |
Biofuel recovery from microalgae biomass grown in dairy wastewater treated with activated sludge: the next step in sustainable production |
title_full_unstemmed |
Biofuel recovery from microalgae biomass grown in dairy wastewater treated with activated sludge: the next step in sustainable production |
title_sort |
Biofuel recovery from microalgae biomass grown in dairy wastewater treated with activated sludge: the next step in sustainable production |
author |
Mendonca, Henrique Vieira de |
author_facet |
Mendonca, Henrique Vieira de Otenio, Marcelo Henrique Marchão, Leonilde Lomeu, Alice Souza, Denise Salvador de Reis, Alberto |
author_role |
author |
author2 |
Otenio, Marcelo Henrique Marchão, Leonilde Lomeu, Alice Souza, Denise Salvador de Reis, Alberto |
author2_role |
author author author author author |
dc.contributor.none.fl_str_mv |
Repositório do LNEG |
dc.contributor.author.fl_str_mv |
Mendonca, Henrique Vieira de Otenio, Marcelo Henrique Marchão, Leonilde Lomeu, Alice Souza, Denise Salvador de Reis, Alberto |
dc.subject.por.fl_str_mv |
Bioresources Renewable energies Fatty acids Bioremediation Biodiesel Wastewater treatment Microalgal biomass Scenedesmus obliquus Chlorella Vulgaris |
topic |
Bioresources Renewable energies Fatty acids Bioremediation Biodiesel Wastewater treatment Microalgal biomass Scenedesmus obliquus Chlorella Vulgaris |
description |
ABSTRACT: Microalgae biofuel could be the next step in avoiding the excessive use of fossil fuels and reducing negative impacts on the environment. In the present study, two species of microalgae (Scenedesmus obliquus and Chlorella vulgaris) were used for biomass production, grown in dairy wastewater treated by activated sludge systems. The photobioreactors were operated in batch and in continuous mode. The dry biomass produced was in the range of 2.30 to 3.10 g L-1. The highest volumetric yields for lipids and carbohydrates were 0.068 and 0.114 g L-1 day(-1). Maximum CO2 biofixation (750 mg L-1 day(-1)) was obtained in continuous mode. The maximum values for lipids (21%) and carbohydrates (39%) were recorded in the batch process with species Scenedesmus obliquus. In all of the experiments, the Linolenic acid concentration (C18:3) was greater than 12%, achieving satisfactory oxidative stability and good quality. Projected biofuel production could vary between 4,863,708 kg and 9,246,456 kg year(-1) if all the dairy wastewater produced in Brazil were used for this purpose. Two hectares would be needed to produce 24,99 x 10(9) L year(-1) of microalgae bioethanol, a far lower value than used in cultivating sugar cane. If all dairy wastewater generated annually in Brazil were used to produce microalgae biomass, it would be possible to obtain approximately 30,609 to 53,647 barrels of biodiesel per year. These data show that only by using dairy wastewater would biofuels be produced to replace 17% to 40% of the fossil fuels currently used in Brazil. |
publishDate |
2022 |
dc.date.none.fl_str_mv |
2022-07-14T10:57:47Z 2022-06-01T00:00:00Z 2022-06-01T00:00:00Z |
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 |
http://hdl.handle.net/10400.9/3882 |
url |
http://hdl.handle.net/10400.9/3882 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
Mendonça, Henrique Vieira de... [et.al.] - Biofuel recovery from microalgae biomass grown in dairy wastewater treated with activated sludge: the next step in sustainable production. In: Science of the Total Environment, 2022, vol. 824, article nº 153838 0048-9697 10.1016/j.scitotenv.2022.153838 1879-1026 |
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 |
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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) |
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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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