Izvorni znanstveni članak
https://doi.org/10.15255/CABEQ.2017.1251
Effect of Simultaneous Steam Explosion and Alkaline Depolymerization on Corncob Lignin and Cellulose Structure
X. Ouyang
; ollege of Life Science and Technology, Beijing University of Chemical Technology, Beijing, 100029, China
L. Chen
; ollege of Life Science and Technology, Beijing University of Chemical Technology, Beijing, 100029, China
S. Zhang
; Department of Biological Systems Engineering, Washington State University, Pullman, WA 99164-6120, USA
Q. Yuan
; ollege of Life Science and Technology, Beijing University of Chemical Technology, Beijing, 100029, China
W. Wang
; a)College of Life Science and Technology, Beijing University of Chemical Technology, Beijing, 100029, China; c) State Key Laboratory of Pulp and Paper Engineering, South China University of Technology, Guangzhou, China, 510640
L. J. Linhardt
; d)Departments of Chemistry and Chemical Biology, e)Chemical and Biological Engineering, f)Center for Biotechnology and Interdisciplinary Studies, Rensselaer Polytechnic Institute, 110 8th Street, Troy, NY 12180, USA Simultaneous
Sažetak
Simultaneous steam explosion and alkaline depolymerization was studied to develop an economic and green process for alkaline pretreatment of lignocellulose. Steam explosion facilitated alkaline delignification and decreased the amount of alkali used during pretreatment. Different amounts of lignin and hemicellulose were removed within 5 min by using different sodium hydroxide concentrations and steam explosion severity. The main component of lignin collected using our simultaneous process was acid-insoluble
lignin, reaching a purity of 84 %. Structural analysis indicated that steam explosion and sodium hydroxide had a synergistic effect on the removal of lignin and hemicellulose from corncob. The effect to four simultaneous pretreatment process of delignification transformed cellulose I to cellulose II, enhancing the enzymatic conversion of cellulose to glucose from 22 % to 96 %. The process of simultaneous steam explosion and alkaline depolymerization shows a potential for application in the lignocellulose biorefinery.
This work is licensed under a Creative Commons Attribution 4.0 International License.
Ključne riječi
lignin; steam explosion; alkaline depolymerization; cellulose; enzymatic hydrolysis
Hrčak ID:
203169
URI
Datum izdavanja:
5.7.2018.
Posjeta: 1.528 *