用玉米炉转化木质纤维素生产生物乙醇

Numchok Manmai, Yuwalee Unpaprom, Ramaeshprabu Ramaraj, Keng-Tung Wu
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引用次数: 1

摘要

化石燃料的使用以及与燃烧相关的环境问题推动了清洁、可再生能源的发展。由木质纤维素生物质制成的生物燃料被认为是一种碳中和和可持续的方法。随着对非石油燃料需求的增长,更多的注意力将放在开发像乙醇这样具有成本竞争力的液体运输生物燃料上。本研究以玉米炉木质纤维素为原料,采用分离水解发酵(SHF)技术生产生物乙醇。研究了不同浓度氢氧化钠的预处理。研究了酶解糖化、发酵时间和底物浓度对糖产量和最终乙醇产量的影响。采用酵解糖化水解液和酿酒酵母单培养进行发酵。结果表明,2% NaOH预处理后水解48 h生物乙醇产量最高(30.21±0.13 g/L)。该研究结果表明,碱预处理玉米炉可作为生物乙醇生产的原料,减少对化石燃料的依赖。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Transformation of lignocellulose from corn stove for bioethanol production
The use of fossil fuels, as well as the environmental issues associated with their burning, has pushed for the development of clean, renewable energy sources. Biofuels made from lignocellulosic biomass are considered a carbon-neutral and sustainable method. As the demand for non-petroleum fuels grows, more attention will be placed on developing a cost-competitive liquid transportation biofuel like ethanol. This study was conducted to produce bioethanol utilizing the SHF (separate hydrolysis and fermentation) technique from corn stove lignocellulose. Pretreatment with sodium hydroxide at various concentrations was also studied. The influence of enzymatic saccharification, fermentation time, and substrate concentration on sugar yield and, eventually, ethanol production was investigated. Fermentation was carried out by using the enzymatically saccharified hydrolysate and monoculture of Saccharomyces cerevisiae. The results reveal that pretreatment with 2% NaOH followed by 48 hours of hydrolysis produced the maximum bioethanol production (30.21 ±0.13 g/L). This study findings indicated that alkali-pretreated corn stove might be used as a feedstock for bioethanol production, reducing reliance on fossil fuels.
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