期刊
BIORESOURCE TECHNOLOGY
卷 342, 期 -, 页码 -出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.biortech.2021.125963
关键词
Acetone; phenoxyethanol; water; Organosolv fractionation; Hansen solubility parameters; Taguchi experimental design; Biorefinery
资金
- National Nature Science Foundation of China [51976221]
- National Key Research and Development Plan of China [2018YFB1501402]
- Key Research and Development Program of Guangdong Province [2020B0101070001]
The novel APW process using acetone, phenoxyethanol, and water for organosolv fractionation of lignocellulosic biomass showed efficient removal of lignin and hemicellulose, good retention of cellulose, and successful recovery of hemicellulose and lignin. Furthermore, this process also demonstrated effective fractionation of various biomass sources with high cellulose and hemicellulose recovery rates exceeding 80%.
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 degrees 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%.
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