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Production of Ethanol from Green Coconut Fiber by Integrating Cloud Point Extraction and Simultaneous Saccharification and Fermentation.

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Title: Production of Ethanol from Green Coconut Fiber by Integrating Cloud Point Extraction and Simultaneous Saccharification and Fermentation.
Authors: de Araújo Padilha, Carlos Eduardo1,2 (AUTHOR) carlos.padilha.089@ufrn.edu.br, Thomas, Habila Yusuf2 (AUTHOR), dos Santos, Mariza Gabryella Brito1 (AUTHOR), Fidelis, José Dário Silva1 (AUTHOR), Silva, Lucas Felipe Simões1 (AUTHOR), de Freitas Silva, Jadna Lúcia1 (AUTHOR), de Oliveira, Gleyson Batista1 (AUTHOR), do Bonfim, Karina Soares1 (AUTHOR), dos Santos, Everaldo Silvino2 (AUTHOR), de Santana Souza, Domingos Fabiano1 (AUTHOR)
Source: BioEnergy Research. Dec2024, Vol. 17 Issue 4, p2268-2281. 14p.
Subjects: Artificial neural networks, Water consumption, Genetic algorithms, Phenols, Point cloud, Lignocellulose
Abstract: The fermentation of whole slurry favors the increase in ethanol titers and minimizes water consumption. However, inhibitors accumulate in the liquid fraction pretreatment, reducing fermentation performance. In order to find a way out, the present study proposed an integration between cloud point extraction (CPE) and ethanol production using fiber of green coconut (GCF) as substrate. Triton X-114 was used to detoxify the liquid fraction from acid pretreatment, and optimal operating conditions were obtained by mathematical modeling. The effects of the residual surfactant from the dilute phase of CPE were analyzed in cellulase adsorption tests, enzymatic hydrolysis, and fermentation of acid-pretreated GCF. CPE promoted high removal of furans (86.23–100%) and phenolic compounds (22.79–75.15%), while the sugars migrated to the dilute phase. A neural network model coupled with a genetic algorithm obtained an optimal condition of 2.38% Triton X-114, temperature of 42 °C, pH of 4.3, and 0.55% sodium chloride. The incubation with the CPE dilute phase increased the residual activity from 25.1 to 50.1% and increased the cellulosic conversion from 32.28 to 41.15%. CPE-saccharification and simultaneous fermentation integration boosted the ethanol production to 12.40 g/L, while the untreated whole slurry reached only 6.29 g/L. Because of these results, the CPE emerges as a promising alternative to favor the full use of sugars from lignocellulosic biomass. [ABSTRACT FROM AUTHOR]
Copyright of BioEnergy Research is the property of Springer Nature and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
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  Data: Production of Ethanol from Green Coconut Fiber by Integrating Cloud Point Extraction and Simultaneous Saccharification and Fermentation.
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  Data: <searchLink fieldCode="JN" term="%22BioEnergy+Research%22">BioEnergy Research</searchLink>. Dec2024, Vol. 17 Issue 4, p2268-2281. 14p.
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  Data: <searchLink fieldCode="DE" term="%22Artificial+neural+networks%22">Artificial neural networks</searchLink><br /><searchLink fieldCode="DE" term="%22Water+consumption%22">Water consumption</searchLink><br /><searchLink fieldCode="DE" term="%22Genetic+algorithms%22">Genetic algorithms</searchLink><br /><searchLink fieldCode="DE" term="%22Phenols%22">Phenols</searchLink><br /><searchLink fieldCode="DE" term="%22Point+cloud%22">Point cloud</searchLink><br /><searchLink fieldCode="DE" term="%22Lignocellulose%22">Lignocellulose</searchLink>
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  Data: The fermentation of whole slurry favors the increase in ethanol titers and minimizes water consumption. However, inhibitors accumulate in the liquid fraction pretreatment, reducing fermentation performance. In order to find a way out, the present study proposed an integration between cloud point extraction (CPE) and ethanol production using fiber of green coconut (GCF) as substrate. Triton X-114 was used to detoxify the liquid fraction from acid pretreatment, and optimal operating conditions were obtained by mathematical modeling. The effects of the residual surfactant from the dilute phase of CPE were analyzed in cellulase adsorption tests, enzymatic hydrolysis, and fermentation of acid-pretreated GCF. CPE promoted high removal of furans (86.23–100%) and phenolic compounds (22.79–75.15%), while the sugars migrated to the dilute phase. A neural network model coupled with a genetic algorithm obtained an optimal condition of 2.38% Triton X-114, temperature of 42 °C, pH of 4.3, and 0.55% sodium chloride. The incubation with the CPE dilute phase increased the residual activity from 25.1 to 50.1% and increased the cellulosic conversion from 32.28 to 41.15%. CPE-saccharification and simultaneous fermentation integration boosted the ethanol production to 12.40 g/L, while the untreated whole slurry reached only 6.29 g/L. Because of these results, the CPE emerges as a promising alternative to favor the full use of sugars from lignocellulosic biomass. [ABSTRACT FROM AUTHOR]
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  Data: <i>Copyright of BioEnergy Research is the property of Springer Nature and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.)
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        Value: 10.1007/s12155-024-10776-x
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        PageCount: 14
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      – SubjectFull: Water consumption
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      – SubjectFull: Genetic algorithms
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      – TitleFull: Production of Ethanol from Green Coconut Fiber by Integrating Cloud Point Extraction and Simultaneous Saccharification and Fermentation.
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