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Optimization of alkali pretreatment to enhance rice straw conversion to butanol

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Optimization of alkali pretreatment to enhance rice straw conversion to butanol

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dc.contributor.author	Valles Sáez, Alejo
dc.contributor.author	Capilla Lloris, Miguel
dc.contributor.author	Álvarez Hornos, Francisco Javier
dc.contributor.author	Mario García-Puchol
dc.contributor.author	San-Valero, Pau
dc.contributor.author	Gabaldón García, Carmen
dc.date.accessioned	2023-11-14T11:48:28Z
dc.date.available	2023-11-14T11:48:28Z
dc.date.issued	2021
dc.identifier.uri	https://hdl.handle.net/10550/91130
dc.description.abstract	The use of rice straw (RS) was enhanced to produce biobutanol as biofuel, for which the NaOH pretreatment was optimized by considering the butanol-biomass ratio that quantify the mass balance efficiency of the three sequential stages of the process: pretreatment, enzymatic hydrolysis and fermentation by Clostridium beijerinckii. The optimum point (solid loading of 5% w/v with 0.75% w/v NaOH at 134 °C for 20 min) of the best cost-wise option yielded an enhanced biomass use of 77.6 g kg RS−1. A maximum butanol titer of 10.1 g L−1 was reached after 72 h of fermentation with the complete uptake of glucose and nearly complete uptake of xylose. The NaOH concentration was the most influential parameter. The appropriate dosage to maximize fermentable sugars instead of the mass balance efficiency of the three stages underestimated the biomass use by 13%, showing the importance of correctly selecting the variable response during optimization.
dc.language.iso	eng
dc.relation.ispartof	Biomass & Bioenergy, 2021, vol. 150, p. 106131
dc.source	Valles Sáez, Alejo Capilla Lloris, Miguel Álvarez Hornos, Francisco Javier Mario García-Puchol San-Valero, Pau Gabaldón García, Carmen 2021 Optimization of alkali pretreatment to enhance rice straw conversion to butanol Biomass & Bioenergy 150 106131
dc.subject	química
dc.title	Optimization of alkali pretreatment to enhance rice straw conversion to butanol
dc.type	journal article
dc.date.updated	2023-11-14T11:48:28Z
dc.identifier.doi	10.1016/j.biombioe.2021.106131
dc.identifier.idgrec	147052
dc.rights.accessRights	open access