Characterization of fractional cuts of co-solvent enhanced lignocellulosic fractionation lignin isolated by sequential precipitation
Abstract
Lignin valorization is significantly hindered by the intrinsic heterogeneity of its complex structures and variability of biomass feedstocks. Fractionation of lignin can overcome these challenges by producing functionally distinct lignin cuts that can be further tailored to end products. Herein, lignin was extracted and depolymerized from poplar by the co-solvent enhanced lignocellulosic fractionation method with renewable THF to obtain CELF lignin. Several solvents were screened to separate soluble and insoluble fractions from the parent CELF lignin. The ethanol soluble portion was then fractionated into different molecular weight cuts via sequential precipitation of the lignin by reducing the concentration of THF. The physicochemical structures of different CELF lignin cuts were elucidated by GPC and NMR techniques. These results suggest that CELF lignin cuts with lower molecular weight contain progressively higher phenolic and carboxylic acid OH groups, which can be more suitable as green antioxidants than the parent lignin.
- Authors:
-
- Univ. of Tennessee, Knoxville, TN (United States)
- Univ. of California, Riverside, CA (United States)
- Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
- Univ. of Tennessee, Knoxville, TN (United States); Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
- Publication Date:
- Research Org.:
- Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States); Univ. of California, Riverside, CA (United States)
- Sponsoring Org.:
- USDOE Office of Science (SC), Biological and Environmental Research (BER); USDOE Office of Energy Efficiency and Renewable Energy (EERE), Transportation Office. Bioenergy Technologies Office
- OSTI Identifier:
- 1489560
- Alternate Identifier(s):
- OSTI ID: 1581904; OSTI ID: 1636689
- Grant/Contract Number:
- AC05-00OR22725; EE0007006
- Resource Type:
- Accepted Manuscript
- Journal Name:
- Bioresource Technology
- Additional Journal Information:
- Journal Volume: 272; Journal Issue: C; Journal ID: ISSN 0960-8524
- Publisher:
- Elsevier
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 59 BASIC BIOLOGICAL SCIENCES; 37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY; Lignin valorization; Co-solvent enhanced lignocellulosic fractionation; Sequential precipitation; Molecular weight distribution; 09 BIOMASS FUELS
Citation Formats
Meng, Xianzhi, Parikh, Aakash, Seemala, Bhogeswararao, Kumar, Rajeev, Pu, Yunqiao Joseph, Wyman, Charles E., Cai, Charles M., and Ragauskas, Arthur J. Characterization of fractional cuts of co-solvent enhanced lignocellulosic fractionation lignin isolated by sequential precipitation. United States: N. p., 2018.
Web. doi:10.1016/j.biortech.2018.09.130.
Meng, Xianzhi, Parikh, Aakash, Seemala, Bhogeswararao, Kumar, Rajeev, Pu, Yunqiao Joseph, Wyman, Charles E., Cai, Charles M., & Ragauskas, Arthur J. Characterization of fractional cuts of co-solvent enhanced lignocellulosic fractionation lignin isolated by sequential precipitation. United States. doi:10.1016/j.biortech.2018.09.130.
Meng, Xianzhi, Parikh, Aakash, Seemala, Bhogeswararao, Kumar, Rajeev, Pu, Yunqiao Joseph, Wyman, Charles E., Cai, Charles M., and Ragauskas, Arthur J. Thu .
"Characterization of fractional cuts of co-solvent enhanced lignocellulosic fractionation lignin isolated by sequential precipitation". United States. doi:10.1016/j.biortech.2018.09.130. https://www.osti.gov/servlets/purl/1489560.
@article{osti_1489560,
title = {Characterization of fractional cuts of co-solvent enhanced lignocellulosic fractionation lignin isolated by sequential precipitation},
author = {Meng, Xianzhi and Parikh, Aakash and Seemala, Bhogeswararao and Kumar, Rajeev and Pu, Yunqiao Joseph and Wyman, Charles E. and Cai, Charles M. and Ragauskas, Arthur J.},
abstractNote = {Lignin valorization is significantly hindered by the intrinsic heterogeneity of its complex structures and variability of biomass feedstocks. Fractionation of lignin can overcome these challenges by producing functionally distinct lignin cuts that can be further tailored to end products. Herein, lignin was extracted and depolymerized from poplar by the co-solvent enhanced lignocellulosic fractionation method with renewable THF to obtain CELF lignin. Several solvents were screened to separate soluble and insoluble fractions from the parent CELF lignin. The ethanol soluble portion was then fractionated into different molecular weight cuts via sequential precipitation of the lignin by reducing the concentration of THF. The physicochemical structures of different CELF lignin cuts were elucidated by GPC and NMR techniques. These results suggest that CELF lignin cuts with lower molecular weight contain progressively higher phenolic and carboxylic acid OH groups, which can be more suitable as green antioxidants than the parent lignin.},
doi = {10.1016/j.biortech.2018.09.130},
journal = {Bioresource Technology},
number = C,
volume = 272,
place = {United States},
year = {2018},
month = {9}
}
Web of Science
Works referencing / citing this record:
A simple fractionation method and GPC analysis of organosolv extracts obtained from lignocellulosic materials
journal, January 2020
- Andreo-Martínez, Pedro; Ortiz-Martínez, Víctor Manuel; García-Martínez, Nuria
- Biomass Conversion and Biorefinery
Determination of hydroxyl groups in biorefinery resources via quantitative 31P NMR spectroscopy
journal, August 2019
- Meng, Xianzhi; Crestini, Claudia; Ben, Haoxi
- Nature Protocols, Vol. 14, Issue 9