A high-solid DES pretreatment using never-dried biomass as the starting material: towards high-quality lignin fractionation
- Chinese Academy of Forestry, Nanjing (China).
- Chinese Academy of Forestry, Nanjing (China)
- Nanjing Forestry Univ. (China)
- Univ. of Tennessee, Knoxville, TN (United States)
- State Univ. of New York (SUNY), Syracuse, NY (United States). College of Environmental Science and Forestry
- Univ. of Tennessee, Knoxville, TN (United States); Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States). Joint Institute for Biological Sciences (JIBS)
This study investigated a high-solid diol deep eutectic solvent (DES) pretreatment using a wet substrate as the starting material. This pretreatment led to a remarkable glucan saccharification of 94.8% with efficient lignin and xylan removal (as high as 63.1% and 73.0%, respectively). Here the chemical structures of the substrates were analyzed comprehensively to reveal the impact of the pretreatment. In addition, over 90% of the removed lignin was recovered from the pretreated liquid, which exhibited a well-preserved β-O-4 structure (46–56/100Ar). The protection mechanism of our DES was investigated by 2D HSQC NMR, GPC, and 31P NMR analysis. This study emphasized that diol-based DES pretreatment of undried lignocellulosic biomass at a high-solid loading can significantly utilize both carbohydrates and lignin fractions with high saccharification yields and high-quality lignin as a co-product.
- Research Organization:
- Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States)
- Sponsoring Organization:
- Jiangsu Province Key Laboratory of Biomass Energy and Materials; National Natural Science Foundation for Youth; USDOE
- Grant/Contract Number:
- AC05-00OR22725
- OSTI ID:
- 1928910
- Journal Information:
- Green Chemistry, Journal Name: Green Chemistry Journal Issue: 4 Vol. 25; ISSN 1463-9262
- Publisher:
- Royal Society of ChemistryCopyright Statement
- Country of Publication:
- United States
- Language:
- English
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