Article
Deep eutectic solvents’ ability to solubilize lignin, cellulose, and hemicellulose; thermal stability; and density
Bioresource Technology
(2017)
Abstract
An environmentally-friendly method to separate cellulose and hemicelluloses from lignin in recalcitrant
biomass for subsequent conversion is desirable to reduce greenhouse gas generation. Easily-prepared,
deep eutectic solvents (DESs) have low volatility, wide liquid range, non-flammability, nontoxicity,
biocompatibility, and biodegradability. This study shows the DESs (formic acid:choline chloride, lactic
acid:choline chloride, acetic acid:choline chloride, lactic acid:betaine, and lactic acid:proline) to be
capable of preferentially dissolving lignin at 60 C. Thermogravimetric analysis show DES to be stable
at typical biomass processing temperatures. Pretreating loblolly pine in one DES increased glucose yield
after enzymatic hydrolysis to more than seven times that of raw or glycerol-pretreated pine. The density
of DES-pretreated biomass was found to be 40% higher than the untreated pine’s density.
Keywords
- Loblolly pine,
- Biomass,
- TGA,
- Enzymatic hydrolysis,
- Glucose yield
Disciplines
Publication Date
Spring April 22, 2017
DOI
10.1016/j.biortech.2017.04.079
Citation Information
Joan Lynam, Narendra Kumar and Mark J. Wong. "Deep eutectic solvents’ ability to solubilize lignin, cellulose, and hemicellulose; thermal stability; and density" Bioresource Technology Vol. 238 (2017) p. 684 - 689 Available at: http://works.bepress.com/joan-lynam/27/