In Situ Transesterification of Microbial Biomass for Biolubricant Production Catalyzed by Heteropolyacid Supported on Niobium

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Autor(es): dc.contributorUniversidade de São Paulo (USP)-
Autor(es): dc.contributorUniversidade Estadual Paulista (UNESP)-
Autor(es): dc.contributorFederal University of Alfenas-
Autor(es): dc.creatorZorn, Savienne M. F. E.-
Autor(es): dc.creatorda Silva, Ana Paula T.-
Autor(es): dc.creatorBredda, Eduardo H.-
Autor(es): dc.creatorBento, Heitor B. S.-
Autor(es): dc.creatorPedro, Guilherme A.-
Autor(es): dc.creatorCarvalho, Ana Karine F.-
Autor(es): dc.creatorSilva, Messias Borges-
Autor(es): dc.creatorDa Rós, Patrícia C. M.-
Data de aceite: dc.date.accessioned2025-08-21T22:13:56Z-
Data de disponibilização: dc.date.available2025-08-21T22:13:56Z-
Data de envio: dc.date.issued2022-05-01-
Data de envio: dc.date.issued2022-05-01-
Data de envio: dc.date.issued2022-01-31-
Fonte completa do material: dc.identifierhttp://dx.doi.org/10.3390/en15041591-
Fonte completa do material: dc.identifierhttp://hdl.handle.net/11449/234195-
Fonte: dc.identifier.urihttp://educapes.capes.gov.br/handle/11449/234195-
Descrição: dc.descriptionLubricants are substances of the foremost importance in the modern world, as they are essential to the proper functioning of various mechanisms. Most lubricants, however, are still made from petroleum fractions. I light of this, and due to various environmental problems, the search for feasible biolubricants has become essential. This study obtained biolubricants through the in situ transesterification of microbial biomass, containing at least 20 wt% of lipids. The following two distinct biomasses were evaluated: the marine microalgae, Dunaliella salina, and the consortium of microalgae-fungi, Scenedesmus obliquus and Mucor circinelloides. Microbial oil from both biomasses presented a fatty acid profile with high amounts of oleic acid. The oil of D. salina had a lower content of polyunsaturated fatty acids relative to the microbial consortium profile, which indicates that this is a good configuration for increasing biolubricant oxidation resistance. The catalyst used was a Keggin-structure heteropolyacid supported on niobium, H3 PMo12 O40 /Nb2 O5, activated at 150◦ C, which had high transesterification yields, notwithstanding the feedstocks, which were rich in free fatty acids. The performed transesterification reactions resulted in excellent yields, up to 97.58% and 96.80%, for marine microalgae and the consortium, respectively, after 6 h at 250◦ C, with 10 wt% of catalyst (related to the lipid amount). As such, the (H3 PMo12 O40 /Nb2 O5 ) catalyst could become an attractive option for producing biolubricants from microbial biomass.-
Descrição: dc.descriptionConselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)-
Descrição: dc.descriptionFundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)-
Descrição: dc.descriptionEngineering School of Lorena University of São Paulo-
Descrição: dc.descriptionEngineering Faculty of Guaratinguetá São Paulo State University (UNESP)-
Descrição: dc.descriptionBioprocess Engineering and Biotechnology Faculty of Pharmaceutical Sciences São Paulo State University (UNESP)-
Descrição: dc.descriptionPostgraduate Program in Biotechnology Chemistry Institute Federal University of Alfenas-
Descrição: dc.descriptionEngineering Faculty of Guaratinguetá São Paulo State University (UNESP)-
Descrição: dc.descriptionBioprocess Engineering and Biotechnology Faculty of Pharmaceutical Sciences São Paulo State University (UNESP)-
Descrição: dc.descriptionCNPq: 165390/2017-4-
Descrição: dc.descriptionFAPESP: 2016/10636-8-
Descrição: dc.descriptionFAPESP: 2016/18909-3-
Descrição: dc.descriptionFAPESP: 2018/01386-3-
Descrição: dc.descriptionFAPESP: 2020/15513-7-
Idioma: dc.languageen-
Relação: dc.relationEnergies-
???dc.source???: dc.sourceScopus-
Palavras-chave: dc.subjectBiolubricant-
Palavras-chave: dc.subjectConsortium-
Palavras-chave: dc.subjectDunaliella salina-
Palavras-chave: dc.subjectFusel oil-
Palavras-chave: dc.subjectH3 PMo12 O40-
Palavras-chave: dc.subjectMicroalgae-
Palavras-chave: dc.subjectMicrobial biomass-
Palavras-chave: dc.subjectMucor circinelloides-
Palavras-chave: dc.subjectScenedesmus obliquus-
Título: dc.titleIn Situ Transesterification of Microbial Biomass for Biolubricant Production Catalyzed by Heteropolyacid Supported on Niobium-
Tipo de arquivo: dc.typelivro digital-
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