Deep Eutectic Solvent Extraction of High-Purity Lignin from a Corn Stover Hydrolysate
- Washington State Univ., Pullman, WA (United States). Bioproducts, Science & Engineering Lab.
- National Renewable Energy Lab. (NREL), Golden, CO (United States)
- Queensland Univ. of Technology, Brisbane, QLD (Australia). Centre for Tropical Crops and Biocommodities
- Washington State Univ., Pullman, WA (United States). Bioproducts, Science & Engineering Lab.; Pacific Northwest National Lab. (PNNL), Richland, WA (United States)
Here, a lactic acid/chlorine chloride-based deep eutectic solvent (DES) was used for the extraction of high-purity lignin (up to 94.7%) in high yield (up to 75%) from the hydrolysis/fermentation residue corn stover hydrolysate (CSH), which was generated from a pilot-plant-scale biorefinery. A range of extraction conditions were investigated, which involved varying reaction temperature, time, and DES composition. The relationship between lignin yield, purity, and structural characteristics with DES treatment conditions was determined. The extraction of high-purity lignin from hydrolysis/fermentation residues presents a promising approach for enhancing the economic feasibility of a lignocellulose biorefinery. It was also determined that DES extraction can produce lignin with a controlled range of molecular weight and functional group content.
- Research Organization:
- National Renewable Energy Laboratory (NREL), Golden, CO (United States)
- Sponsoring Organization:
- National Science Foundation (NSF); USDA; USDOE Office of Energy Efficiency and Renewable Energy (EERE), Transportation Office. Bioenergy Technologies Office
- Grant/Contract Number:
- AC36-08GO28308
- OSTI ID:
- 1660155
- Report Number(s):
- NREL/JA--5100-77536; MainId:27472; UUID:ab199dc4-4fab-45f2-b4a0-c62294057f29; MainAdminID:15215
- Journal Information:
- ChemSusChem, Journal Name: ChemSusChem Journal Issue: 17 Vol. 13; ISSN 1864-5631
- Publisher:
- ChemPubSoc EuropeCopyright Statement
- Country of Publication:
- United States
- Language:
- English
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