Acidic and thermal pre-treatments for anaerobic digestion inoculum to improve hydrogen and volatile fatty acid production using xylose as the substrate

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Autor(es): dc.contributorUniversidade Estadual de Campinas (UNICAMP)-
Autor(es): dc.contributorNational Research Council Canada (CNRC/NRC)-
Autor(es): dc.contributorUniversidade Estadual Paulista (Unesp)-
Autor(es): dc.contributorUniversidade de São Paulo (USP)-
Autor(es): dc.creatorMockaitis, Gustavo-
Autor(es): dc.creatorBruant, Guillaume-
Autor(es): dc.creatorGuiot, Serge R.-
Autor(es): dc.creatorPeixoto, Guilherme [UNESP]-
Autor(es): dc.creatorForesti, Eugenio-
Autor(es): dc.creatorZaiat, Marcelo-
Data de aceite: dc.date.accessioned2022-02-22T00:22:59Z-
Data de disponibilização: dc.date.available2022-02-22T00:22:59Z-
Data de envio: dc.date.issued2020-12-11-
Data de envio: dc.date.issued2020-12-11-
Data de envio: dc.date.issued2019-12-31-
Fonte completa do material: dc.identifierhttp://dx.doi.org/10.1016/j.renene.2019.06.134-
Fonte completa do material: dc.identifierhttp://hdl.handle.net/11449/197924-
Fonte: dc.identifier.urihttp://educapes.capes.gov.br/handle/11449/197924-
Descrição: dc.descriptionXylose is a by-product of lignocellulosic biomass processing for production of second-generation biofuels and could be suitable for bioproduct manufacturing. This paper describes an innovative approach that enables the system to achieve high yielding for hydrogen production. The study compared 4 physicochemical pre-treatments performed in an anaerobic mixed culture (acidic, thermal, acidic-thermal and thermal acidic) to achieve an inoculum with a high-efficiency xylose to hydrogen conversion under mesophilic conditions (30 °C). The acidic pre-treatment was the most efficient to select microorganisms able to produce hydrogen and volatile acid from xylose. Kinetics has shown that acidic pre-treatment had a hydrogen/xylose molar yielding factor of 1.57 (molar base) and a hydrogen maximum production rate of 253 mL H2 h−1. Mass balance considered all possible metabolic pathways using xylose as a substrate. Anaerobic degradation of ethanol was the most active pathway for hydrogen production in all experiments, except for the control. Each pre-treatment performed for the original inoculum resulted in different microbiological profiles, but the genus Clostridium was the most abundant in all assays. Acidic pre-treatment stimulated the growth of organisms from the genera Peptostreptococcaceae, Truepera and Kurthia, which could be related to the better results in hydrogen production found in this condition.-
Descrição: dc.descriptionInterdisciplinary Research Group on Biotechnology Applied to the Agriculture and the Environment School of Agricultural Engineering University of Campinas (GBMA/FEAGRI/UNICAMP), 501 Cândido Rondon Avenue, CEP, 13.083-875-
Descrição: dc.descriptionAnaerobic Technologies and Bioprocess Control Group – Energy Mining and Environment Portfolio National Research Council Canada (CNRC/NRC), 6100 Royalmount Avenue-
Descrição: dc.descriptionBioprocess and Biotechnology Department Faculty of Pharmaceutical Sciences of Araraquara Universidade Estadual Paulista “Júlio de Mesquita Filho” (FCFAR/UNESP) Km 01 - Campus Universitário, Araraquara-Jaú Road, CEP 14.801-902-
Descrição: dc.descriptionHydraulics and Sanitation Department São Carlos Engineering School Universidade de São Paulo (SHS/EESC/USP), Av. Trabalhador São-Carlense 400, CEP 13.566-590, São Carlos-
Descrição: dc.descriptionBioprocess and Biotechnology Department Faculty of Pharmaceutical Sciences of Araraquara Universidade Estadual Paulista “Júlio de Mesquita Filho” (FCFAR/UNESP) Km 01 - Campus Universitário, Araraquara-Jaú Road, CEP 14.801-902-
Formato: dc.format1388-1398-
Idioma: dc.languageen-
Relação: dc.relationRenewable Energy-
???dc.source???: dc.sourceScopus-
Palavras-chave: dc.subjectAcidogenesis-
Palavras-chave: dc.subjectAnaerobic-
Palavras-chave: dc.subjectBiohydrogen-
Palavras-chave: dc.subjectDark fermentation-
Palavras-chave: dc.subjectKinetics-
Título: dc.titleAcidic and thermal pre-treatments for anaerobic digestion inoculum to improve hydrogen and volatile fatty acid production using xylose as the substrate-
Tipo de arquivo: dc.typelivro digital-
Aparece nas coleções:Repositório Institucional - Unesp

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