Chen Jiazhao, Tan Xuesong, Miao Changlin, Zhang Yu, Yuan Zhenhong, Zhuang Xinshu
Guangzhou Institute of Energy Conversion, Chinese Academy of Sciences, CAS Key Laboratory of Renewable Energy, Guangdong Provincial Key Laboratory of New and Renewable Energy Research and Development, Guangzhou 510640, PR China; University of Chinese Academy of Sciences, Beijing 100049, PR China.
Guangzhou Institute of Energy Conversion, Chinese Academy of Sciences, CAS Key Laboratory of Renewable Energy, Guangdong Provincial Key Laboratory of New and Renewable Energy Research and Development, Guangzhou 510640, PR China.
Bioresour Technol. 2021 Dec;342:125963. doi: 10.1016/j.biortech.2021.125963. Epub 2021 Sep 20.
A novel ternary solvent system for organosolv fractionation of lignocellulosic biomass, named APW process, which is composed of acetone, phenoxyethanol and water with the advantages of monophasic deconstruction and biphasic separation of components was developed. Through fractionation of amorpha as a case study, a monophasic APW solution (acetone/phenoxyethanol/water = 5:11:4, volume ratio) with the best lignin affinity was constructed based on Hansen solubility parameters. According to Taguchi experimental design, the optimal conditions were 130 °C, 70 min, 0.15 M sulfuric acid and 20 LSR. Under optimal conditions, removal of lignin and hemicellulose reached 95.60% and 98.39%, respectively. While 80.48% of cellulose was retained in residue and its digestibility was 80.36%. Then, 83.74% of hemicellulose was recovered from aqueous as sugars, and 35.64% of lignin was recovered by precipitation. Moreover, APW process also have effective fractionation of sugarcane bagasse, corn cob and pine, cellulose and hemicellulose recovery were both over 80%.
开发了一种用于木质纤维素生物质有机溶剂分级分离的新型三元溶剂体系，称为APW工艺，它由丙酮、苯氧乙醇和水组成，具有单相解构和双相分离组分的优点。以紫穗槐为例进行分级分离，基于汉森溶解度参数构建了具有最佳木质素亲和力的单相APW溶液（丙酮/苯氧乙醇/水 = 5:11:4，体积比）。根据田口实验设计，最佳条件为130℃、70分钟、0.15M硫酸和20LSR。在最佳条件下，木质素和半纤维素的去除率分别达到95.60%和98.39%。同时，80.48%的纤维素保留在残渣中，其消化率为80.36%。然后，83.74%的半纤维素以糖的形式从水溶液中回收，35.64%的木质素通过沉淀回收。此外，APW工艺对甘蔗渣、玉米芯和松木也有有效的分级分离，纤维素和半纤维素的回收率均超过80%。
