Fractionation of green coconut fiber using sequential hydrothermal/alkaline pretreatments and amberlite XAD-7HP resin

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dc.contributor.authorSouza, Domingos Fabiano de Santana
dc.contributor.authorPadilha, Carlos Eduardo de Araújo
dc.contributor.authorNogueira, Cleitiane da Costa
dc.contributor.authorOliveira Filho, Marcos Antônio
dc.contributor.authorSousa Júnior, Francisco Canindé de
dc.contributor.authorAssis, Cristiane Fernandes de
dc.contributor.authorOliveira, Jackson Araújo de
dc.contributor.authorSantos, Everaldo Silvino dos
dc.date.accessioned2021-12-03T19:05:18Z
dc.date.available2021-12-03T19:05:18Z
dc.date.issued2019-12
dc.description.resumoThe fractionation of agroindustrial and forest residues is a premise of the biorefinery concept. Thus, the present study focuses on pretreatments (hydrothermal and alkaline) and detoxification processes in order to transform green coconut fiber (GCF) into cellulose-rich material, dye biosorbent, bioactive phenolic compounds, lignin and arabinoxylan. The adsorption onto Amberlite XAD-7HP resin allowed the best recovery of phenolic compounds from hydrothermal pretreatment liquor, which presented potent antioxidant activities such as inhibition of hydroxyl and superoxide radicals of 77.05% and 76.88%, respectively. Acid precipitation was effective to recover 41.23% of the initial lignin content from alkaline pretreatment liquor. The detoxified hydrothermal pretreatment liquor was used as an additional source of glucose, increasing the final concentration of ethanol by 79.6% in simultaneous saccharification and fermentation of delignified GCF. Using delignified GCF as biosorbent, made it possible to obtain a static adsorption capacity of 200 mg of methylene blue dye per gram of biosorbent and good recyclability in dynamic experiments. Therefore, the proposed methodology guarantees a practical way of manufacturing value-added products from lignocellulosic materialspt_BR
dc.identifier.citationPADILHA, Carlos Eduardo de Araújo; NOGUEIRA, Cleitiane da Costa; OLIVEIRA FILHO, Marcos Antônio; SOUSA JÚNIOR, Francisco Canindé de; ASSIS, Cristiane Fernandes de; SOUZA, Domingos Fabiano de Santana; OLIVEIRA, Jackson Araújo de; SANTOS, Everaldo Silvino dos. Fractionation of green coconut fiber using sequential hydrothermal/alkaline pretreatments and Amberlite XAD-7HP resin. Journal Of Environmental Chemical Engineering, [S.L.], v. 7, n. 6, p. 103474, dez. 2019. Elsevier BV. http://dx.doi.org/10.1016/j.jece.2019.103474. Disponível em <https://www.sciencedirect.com/science/article/abs/pii/S2213343719305974?via%3Dihub>. Acesso em 05 nov. 2021.pt_BR
dc.identifier.doi10.1016/j.jece.2019.103474
dc.identifier.issn2213-3437
dc.identifier.urihttps://repositorio.ufrn.br/handle/123456789/45164
dc.languageenpt_BR
dc.publisherElsevierpt_BR
dc.subjectAlkaline pretreatmentpt_BR
dc.subjectEthanol productionpt_BR
dc.subjectPhenolic compoundspt_BR
dc.subjectLignin recoverypt_BR
dc.subjectArabinoxylan recoverypt_BR
dc.subjectMethylene blue dyept_BR
dc.titleFractionation of green coconut fiber using sequential hydrothermal/alkaline pretreatments and amberlite XAD-7HP resinpt_BR
dc.typearticlept_BR

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