芬顿法和铁酸铋芬顿法预处理甘蔗渣以提高酶解糖化效率的比较。
Comparison of Fenton and bismuth ferrite Fenton-like pretreatments of sugarcane bagasse to enhance enzymatic saccharification.
机构信息
Laboratory of Ecological and Environmental Engineering, College of Resources and Environment, Huazhong Agricultural University, Wuhan 430070, China.
Laboratory of Ecological and Environmental Engineering, College of Resources and Environment, Huazhong Agricultural University, Wuhan 430070, China; Collaborative Innovation Center for Sustainable Pig Production, Hubei Province, China.
出版信息
Bioresour Technol. 2019 Aug;285:121343. doi: 10.1016/j.biortech.2019.121343. Epub 2019 Apr 13.
This study compared enzymatic saccharification of sugarcane bagasse (SCB) after application of two different pretreatment methods, Fenton pretreatment (FP) and BiFeO Fenton-like pretreatment (BFP). The composition, morphology and structural properties of SCB with different pretreatments were analyzed. Results showed that, after BFP, the yield of reducing sugar of SCB under enzymatic saccharification for 72 h was 25.8%, and the sugar conversion rate was 36.6%, which were 2.2 and 2.4-fold those of the FP, respectively. Moreover, the removal of hemicellulose and delignification in the BFP was more severe than that in the FP. The determination of hydroxyl radical (OH) in the two different Fenton processes revealed that the OH generated in the BiFeO Fenton-like system was higher in concentration and longer in action time than that in the Fenton system, which was likely key to the stronger effect of BFP than FP on the enzymatic saccharification of SCB.
本研究比较了两种不同预处理方法（芬顿预处理（FP）和 BiFeO 类芬顿预处理（BFP））对甘蔗渣（SCB）进行酶解糖化的效果。分析了不同预处理方法后 SCB 的组成、形态和结构特性。结果表明，经过 BFP 预处理后，SCB 在酶解 72 小时内的还原糖得率为 25.8%，糖转化率为 36.6%，分别是 FP 的 2.2 倍和 2.4 倍。此外，BFP 对 SCB 中半纤维素的去除和木质素的脱除比 FP 更为剧烈。两种不同芬顿工艺中羟基自由基（OH）的测定表明，BiFeO 类芬顿体系中生成的 OH 浓度更高，作用时间更长，这可能是 BFP 比 FP 对 SCB 酶解糖化效果更强的关键。
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