Abstract Acidified [Bmim]Cl solution showed a great efficacy for the pretreatment of softwood, hardwood, rice straw, and sugarcane bagasse. The pretreatment resulted in 29 and 20-fold increase in cellulose digestibility of hardwood and softwood, respectively, and most cellulose in rice straw and sugarcane bagasse was converted into glucose. Fermentation of biomass hydrolysates produced 21.86–29.56 g/L ethanol, thereby achieving ethanol yields of 0.49–0.51 g/g. Ethanol was concentrated up to 79.8% from a fermentation broth containing 2.4% ethanol using four consecutive pervaporations. This work demonstrates the viability of biofuel production from diverse feedstocks and the feasibility of ethanol recovery using pervaporative separation.

中文翻译：

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用于生物乙醇生产的水性酸化离子液体预处理和渗透蒸发法浓缩生产乙醇

摘要 酸化[Bmim]Cl溶液对针叶木、阔叶木、稻草和甘蔗渣的预处理效果显着。预处理使硬木和软木的纤维素消化率分别提高了 29 倍和 20 倍，并且稻草和甘蔗渣中的大部分纤维素转化为葡萄糖。生物质水解物的发酵产生 21.86–29.56 g/L 乙醇，从而实现 0.49–0.51 g/g 的乙醇产量。使用连续四次渗透蒸发，乙醇从含有 2.4% 乙醇的发酵液中浓缩至 79.8%。这项工作证明了从不同原料生产生物燃料的可行性以及使用渗透蒸发分离回收乙醇的可行性。