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首页> 外文期刊>Energy Conversion & Management >Preparation of furfural from Eucalyptus by the MIBK/H_2O pretreatment with biphasic system and enzymatic hydrolysis of the resulting solid fraction
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Preparation of furfural from Eucalyptus by the MIBK/H_2O pretreatment with biphasic system and enzymatic hydrolysis of the resulting solid fraction

机译：通过双相体系MIBK / H_2O预处理从桉树中制备糠醛并酶解所得固体部分

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摘要

Forest wood biomass can be a sustainable and cost-effective feedstock for the biorefinery industries, but the rigid and compact structure of plant cell is a major barrier for production of clean energy and biochemical. In this case, the MIBK/H2O pretreatment with biphasic system was applied to treat Eucalyptus and then systematically evaluated pretreatment conditions (e.g., MIBK/H2O ratio, reaction temperature and time, NaCl concentration, and HCl dosage) on the effect of furfural yield. The resulting solid fraction obtained from the optimum pretreatment condition for furfural yield was to produce fermentable glucose by enzymatic hydrolysis. Study on enzymatic hydrolysis of the raw material and resulting solid fraction obtained by single aqueous system was also contrastively investigated. The furfural yield was 65.9% and the recovery of residue was 46.9% under an optimal reaction condition (V-MIBK:V-H2O = 5:5, 150 degrees C, 60 min, 0.3 M HCI). Meanwhile, the yield of glucose of cellulose was improved after the pretreatments with different systems and a maximum value was up to 60.2% by the MIBK/H2O pretreatment. The effective fermentable glucose production was mainly affected by the significant removal of hemicelluloses, change of CrI, and destruction of surface morphology of Eucalyptus. The MIBK/H2O pretreatment can be considered as a potential approach for efficient conversion of Eucalyptus to clean energy and biochemicals.
机译：森林木材生物质可以是生物炼制行业的一种可持续且具有成本效益的原料，但是植物细胞的刚性和紧凑结构是生产清洁能源和生化产品的主要障碍。在这种情况下，采用双相体系的MIBK / H2O预处理来处理桉树，然后系统地评估预处理条件（例如MIBK / H2O比例，反应温度和时间，NaCl浓度和HCl剂量）对糠醛收率的影响。从糠醛收率的最佳预处理条件获得的固体馏分通过酶促水解产生可发酵的葡萄糖。还对比研究了原料的酶水解和通过单一水体系获得的固体部分的研究。在最佳反应条件下（V-MIBK：V-H2O = 5：5、150摄氏度，60分钟，0.3 M HCl），糠醛收率为65.9％，残留物回收率为46.9％。同时，采用不同体系进行预处理后，纤维素的葡萄糖产量得到提高，MIBK / H2O预处理的最大值达到60.2％。有效发酵葡萄糖的产生主要受到半纤维素的大量去除，CrI的变化以及桉树表面形态的破坏的影响。 MIBK / H2O预处理可以被认为是将桉树有效转化为清洁能源和生化物质的一种潜在方法。

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