%0 Evaluation Study
%T Novel process for the coproduction of xylo-oligosaccharides, fermentable sugars, and lignosulfonates from hardwood.
%A Huang C
%A Jeuck B
%A Du J
%A Yong Q
%A Chang HM
%A Jameel H
%A Phillips R
%J Bioresour Technol
%V 219
%N 0
%D Nov 2016
%M 27543951
%F 11.889
%R 10.1016/j.biortech.2016.08.051
%X Many biorefineries have not been commercialized due to poor economic returns from final products. In this work, a novel process has been developed to coproduce valuable sugars, xylo-oligosaccharides, and lignosulfonates from hardwood. The modified process includes a mild autohydrolysis pretreatment, which enables for the recovery of the xylo-oligosaccharides in auto-hydrolysate. Following enzymatic hydrolysis, the residue is sulfomethylated to produce lignosulfonates. Recycling the sulfomethylation residues increased both the glucan recovery and lignosulfonate production. The glucose recovery was increased from 81.7% to 87.9%. Steady state simulation using 100g of hardwood produced 46.7g sugars, 5.9g xylo-oligosaccharides, and 25.7g lignosulfonates, which were significantly higher than that produced from the no-recycling process with 39.1g sugars, 5.9g xylo-oligosaccharides, and 15.0g lignosulfonates. The results indicate that this novel biorefinery process can improve the production of fermentable sugars and lignosulfonate from hardwood as compared to a conventional biorefinery process.