文献类型：期刊文献

英文题名：Modified alkaline peroxide pretreatment: An efficient path forward for bioethanol production from bamboo

作者：Huang, Chen[1,2,3] Zhan, Yunni[1,2] Du, Xinghu[2] Zhou, Yang[2] Yu, Longxiang[2] Meng, Xianzhi[3] Jiao, Jian[1] Fang, Guigan[1,2] Ragauskas, Arthur J.[3,4,5]

第一作者：黄晨;Huang, Chen

通信作者：Fang, GG[1];Ragauskas, AJ[2]|[a000589b6171897e30b38]房桂干;

机构：[1]Chinese Acad Forestry, Inst Chem Ind Forest Prod, Jiangsu Prov Key Lab Biomass Energy & Mat, Nanjing 210042, Peoples R China;[2]Nanjing Forestry Univ, Coinnovat Ctr Efficient Proc & Utilizat Forest Re, Nanjing 210037, Peoples R China;[3]Univ Tennessee, Dept Chem & Biomol Engn, Knoxville, TN 37996 USA;[4]Univ Tennessee, Ctr Renewable Carbon, Inst Agr, Dept Forestry Wildlife & Fisheries, Knoxville, TN 37996 USA;[5]Oak Ridge Natl Lab, Biosci Div, Joint Inst Biol Sci, Ctr Bioenergy Innovat, POB 2009, Oak Ridge, TN 37831 USA

年份：2020

卷号：224

外文期刊名：ENERGY CONVERSION AND MANAGEMENT

收录：;EI(收录号：20203609131760);Scopus(收录号：2-s2.0-85090039351);WOS:【SCI-EXPANDED(收录号:WOS:000603320700003)】；

基金：The authors acknowledge the Jiangsu Province Key Laboratory of Biomass Energy and Materials (No. JSBEM-S-202004), the China Postdoctoral Science Foundation (No. 2020M670526), Innovative Ability Enhancement Project for R&D Team of ICIFP, CAF (LHSXKQ8), and the Fundamental Research Funds of CAF "Enhancing Project in the Field of Wood Composite Materials and Chemical Resources Utilization" (CAFYBB2017ZX003-08) for supporting the work presented in this paper.

语种：英文

外文关键词：Modified alkaline hydrogen peroxide pretreatment; Lignin removal; Enzymatic hydrolysis; Simultaneous saccharification and fermentation

摘要：To overcome the typical delignification saturation point of alkaline peroxide pretreatment and further facilitate lignin removal, a novel modified alkaline hydrogen peroxide pretreatment (MAHP) was proposed by introducing ethanol into the reaction system. The dosages of H2O2, ethanol, and pretreatment temperature were optimized, and the results revealed that a maximum lignin removal as high as 79.25% could be achieved at only 100 degrees C, 3 wt % H2O2 concentration and 1 wt% ethanol concentration. Meanwhile, 76.5% of glucan and 56.0% of xylan were preserved at this pretreatment condition. By overcoming the delignification saturation point, enzymatic hydrolysis efficiency was remarkably enhanced, achieving 96.76% and 97.38% of glucan and xylan conversion, respectively, which are 7.4 and 11.4 times as compared to that of the untreated bamboo. Furthermore, the simultaneous saccharification and fermentation (SSF) result indicated an identical ethanol yield of similar to 75% when elevating the SSF solid loading from 5% to 30%. Based on the sequential SSF and xylose fermentation results, about 5.6 tons of bamboo would be consumed to produce 1 ton of ethanol. Finally, the energy balance revealed that a positive balance of 1255.4 KJ could be generated via processing 1 kg bamboo. The results demonstrate that the MAHP is a promising high-efficiency pretreatment technology for bamboo due to the mild pretreatment severity and robust ethanol yield.