Fractionation of green coconut fiber using sequential hydrothermal/alkaline pretreatments and amberlite XAD-7HP resin
The 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, bio...
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ri-123456789-451642023-02-14T19:11:39Z Fractionation of green coconut fiber using sequential hydrothermal/alkaline pretreatments and amberlite XAD-7HP resin Souza, Domingos Fabiano de Santana Padilha, Carlos Eduardo de Araújo Nogueira, Cleitiane da Costa Oliveira Filho, Marcos Antônio Sousa Júnior, Francisco Canindé de Assis, Cristiane Fernandes de Oliveira, Jackson Araújo de Santos, Everaldo Silvino dos Alkaline pretreatment Ethanol production Phenolic compounds Lignin recovery Arabinoxylan recovery Methylene blue dye The 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 materials 2021-12-03T19:05:18Z 2021-12-03T19:05:18Z 2019-12 article PADILHA, 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. 2213-3437 https://repositorio.ufrn.br/handle/123456789/45164 10.1016/j.jece.2019.103474 en Elsevier |
| institution |
Repositório Institucional |
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RI - UFRN |
| language |
English |
| topic |
Alkaline pretreatment Ethanol production Phenolic compounds Lignin recovery Arabinoxylan recovery Methylene blue dye |
| spellingShingle |
Alkaline pretreatment Ethanol production Phenolic compounds Lignin recovery Arabinoxylan recovery Methylene blue dye Souza, Domingos Fabiano de Santana Padilha, Carlos Eduardo de Araújo Nogueira, Cleitiane da Costa Oliveira Filho, Marcos Antônio Sousa Júnior, Francisco Canindé de Assis, Cristiane Fernandes de Oliveira, Jackson Araújo de Santos, Everaldo Silvino dos Fractionation of green coconut fiber using sequential hydrothermal/alkaline pretreatments and amberlite XAD-7HP resin |
| description |
The 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 materials |
| format |
article |
| author |
Souza, Domingos Fabiano de Santana Padilha, Carlos Eduardo de Araújo Nogueira, Cleitiane da Costa Oliveira Filho, Marcos Antônio Sousa Júnior, Francisco Canindé de Assis, Cristiane Fernandes de Oliveira, Jackson Araújo de Santos, Everaldo Silvino dos |
| author_facet |
Souza, Domingos Fabiano de Santana Padilha, Carlos Eduardo de Araújo Nogueira, Cleitiane da Costa Oliveira Filho, Marcos Antônio Sousa Júnior, Francisco Canindé de Assis, Cristiane Fernandes de Oliveira, Jackson Araújo de Santos, Everaldo Silvino dos |
| author_sort |
Souza, Domingos Fabiano de Santana |
| title |
Fractionation of green coconut fiber using sequential hydrothermal/alkaline pretreatments and amberlite XAD-7HP resin |
| title_short |
Fractionation of green coconut fiber using sequential hydrothermal/alkaline pretreatments and amberlite XAD-7HP resin |
| title_full |
Fractionation of green coconut fiber using sequential hydrothermal/alkaline pretreatments and amberlite XAD-7HP resin |
| title_fullStr |
Fractionation of green coconut fiber using sequential hydrothermal/alkaline pretreatments and amberlite XAD-7HP resin |
| title_full_unstemmed |
Fractionation of green coconut fiber using sequential hydrothermal/alkaline pretreatments and amberlite XAD-7HP resin |
| title_sort |
fractionation of green coconut fiber using sequential hydrothermal/alkaline pretreatments and amberlite xad-7hp resin |
| publisher |
Elsevier |
| publishDate |
2021 |
| url |
https://repositorio.ufrn.br/handle/123456789/45164 |
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