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A multi-product strategy for the fractionation of corn stover based on peracetic acid and maleic acid processing.
- Source :
- Journal of Environmental Chemical Engineering; Dec2022, Vol. 10 Issue 6, pN.PAG-N.PAG, 1p
- Publication Year :
- 2022
-
Abstract
- As an efficient lignocellulose fractionation process, peracetic acid and maleic acid (PAM) pretreatment is integrated into a multi-product platform for the simultaneous manufacture of cellulose, lignin, and xylose. Employing such strategy, 100 g corn stover (dry basis) yielded 39.63 g cellulose-rich solids along with 11.88 g xylose and 12.00 g lignin recovered from the pretreatment liquor. The recovery of xylose and lignin was assessed with various organic solvents, of which 2-methyltetrahydrofuran (2-MeTHF) showed superior performance, giving high lignin yield (75.23%) and xylose yield (67.32%). The recovered lignin (2-MeTHF-L) was characterized by high purity, relatively low molecular weight, and large numbers of carboxyl group. Besides, 2D-HSQC NMR analysis revealed that the 2-MeTHF-L was esterified with maleic acid during PAM pretreatment, partly responsible for its enhanced antioxidant ability. This strategy maximizes feedstock utilization and improves the processability in downstream valorization, offering a prospect for sustainable and efficient biorefineries. [Display omitted] • A multi-product strategy was evaluated for the fractionation of corn stover. • High lignin yield (75.23%) and xylose yield (67.32%) were attained with 2-MeTHF. • Recovered lignin possessed desirable properties such as low molecular weight. • Esterification of recovered lignin partly enhanced the antioxidant activity. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 22133437
- Volume :
- 10
- Issue :
- 6
- Database :
- Supplemental Index
- Journal :
- Journal of Environmental Chemical Engineering
- Publication Type :
- Academic Journal
- Accession number :
- 160535789
- Full Text :
- https://doi.org/10.1016/j.jece.2022.108764