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Pretreatment with concurrent UV photocatalysis and alkaline H2O2 enhanced the enzymatic hydrolysis of sisal waste
Bioresource Technology ( IF 9.7 ) Pub Date : 2018-07-10 , DOI: 10.1016/j.biortech.2018.07.038
Yishuo Yang , Jian Yang , Jing Cao , Zhaomei Wang

This work studied a concurrent UV photocatalysis and alkaline H2O2 pretreatment (UHP) to enhance the subsequent enzymatic hydrolysis of sisal waste in comparison with alkaline H2O2 pretreatment (AHP). An optimal condition was identified for UHP at H2O2 charge 0.1 g/g dried sisal waste, pH 10.0, and UV radiation for 6 h. Under this condition, UHP led to a delignification rate of 76.6%, a conversion to reducing sugar at 71.2%, and a conversion to glucose at 91.6%, respectively. XRD, FT-IR and SEM analysis showed an increase in crystalline degree and significant changes in the structure of sisal during UHP. The current study implicates that UHP is more efficient than AHP in pretreating sisal waste, with reduced H2O2 charge, shortened pretreatment time, and enhanced enzymatic digestibility.



中文翻译:

同时进行紫外线光催化和碱性H 2 O 2预处理可增强剑麻废料的酶促水解

这项工作研究了同时进行的UV光催化和碱性H 2 O 2预处理(UHP),与碱性H 2 O 2预处理(AHP)相比,可以增强随后的剑麻废料的酶促水解。确定了H 2 O 2下UHP的最佳条件充入0.1 g / g的剑麻废液,pH 10.0和UV辐射6小时。在这种条件下,UHP的去木质素率达到76.6%,还原糖转化率为71.2%,葡萄糖转化率为91.6%。XRD,FT-IR和SEM分析表明,UHP过程中剑麻的结晶度增加,剑麻的结构发生了显着变化。当前的研究表明,在预处理剑麻废物方面,UHP比AHP更有效,减少了H 2 O 2的加入,缩短了预处理时间,并增强了酶消化率。

更新日期:2018-07-10
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