电生成碱性过氧化氢用于稻草预处理以增强酶解。
Electrogenerated alkaline hydrogen peroxide for rice straw pretreatment to enhance enzymatic hydrolysis.
机构信息
Key Laboratory of Green Chemical Process of Ministry of Education, Key Laboratory of Novel Reactor and Green Chemical Technology of Hubei Province, School of Chemical Engineering and Pharmacy, Wuhan Institute of Technology, Wuhan 430205, China.
Key Laboratory of Green Chemical Process of Ministry of Education, Key Laboratory of Novel Reactor and Green Chemical Technology of Hubei Province, School of Chemical Engineering and Pharmacy, Wuhan Institute of Technology, Wuhan 430205, China.
出版信息
Bioresour Technol. 2019 Nov;292:122077. doi: 10.1016/j.biortech.2019.122077. Epub 2019 Aug 28.
In this work, alkaline hydrogen peroxide (AHP) solution with 1 wt% HO was electrogenerated by oxygen reduction with a current efficiency of 75.2% in a home-made gas diffusion electrode-based electrochemical cell and used for rice straw pretreatment (0.1 g HO/g rice straw, 10% (w/v) biomass loading, 55 °C, 2 h). Results showed that the AHP pretreatment removed 97.56% of the initial lignin, 85.75% of the initial hemicellulose, and only 0.56% of the initial cellulose, and the specific surface area and porosity of the AHP pretreated rice straw (AHP-RS) were greatly increased. Saccharification results showed that after 48 h of enzymatic hydrolysis AHP-RS achieved a 3.2-fold increase in reducing sugar concentration compared to the untreated rice straw (5.81 and 1.81 g L), highlighting the potential use of this AHP solution for lignocellulose pretreatment.
在这项工作中，通过电流效率为 75.2%的氧气还原反应，在自制的基于气体扩散电极的电化学电池中生成了 1wt%HO 的碱性过氧化氢（AHP）溶液，并将其用于水稻秸秆预处理（0.1gHO/g 秸秆，生物质负载量 10%（w/v），55°C，2h）。结果表明，AHP 预处理去除了 97.56%的初始木质素、85.75%的初始半纤维素，仅 0.56%的初始纤维素，并且 AHP 预处理的水稻秸秆（AHP-RS）的比表面积和孔隙率大大增加。糖化结果表明，经过 48h 的酶水解后，与未经处理的水稻秸秆相比，AHP-RS 的还原糖浓度增加了 3.2 倍（分别为 5.81 和 1.81g/L），突出了该 AHP 溶液在木质纤维素预处理方面的潜在用途。
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