TY - JOUR
T1 - Reviving Pretreatment Effectiveness of Deep Eutectic Solvents on Lignocellulosic Date Palm Residues by Prior Recalcitrance Reduction
AU - Fang, Chuanji
AU - Thomsen, Mette Hedegaard
AU - Frankær, Christian Grundahl
AU - Brudecki, Grzegorz P.
AU - Schmidt, Jens Ejbye
AU - Alnashef, Inas Muen
N1 - Funding Information:
ACKNOWLEDGMENTS The authors gratefully acknowledge financial support from a Cooperative Agreement between the Masdar Institute of Science and Technology (Masdar Institute), Abu Dhabi, UAE and the Massachusetts Institute of Technology (MIT), Cambridge, MA, USA - Reference 02/MI/MI/CP/11/07633/ GEN/G/00. Dr. Ahmed D. Aljaberi is acknowledged for his technical assistance on XRD.
Publisher Copyright:
© 2017 American Chemical Society.
PY - 2017/3/29
Y1 - 2017/3/29
N2 - Deep eutectic solvents (DESs), featured as promising green solvents, have increasingly drawn attention in the processing of a wide spectrum of lignocellulosic biomass (e.g., corn stover, wheat straw, and rice straw). However, the ineffectiveness of enhancing enzymatic digestibility of lignocellulosic date palm residues by pretreatment using DESs (choline chloride/glycerol) only was observed in this study. Inspired by the different observation with counterparts, it was hypothesized that the recalcitrance of date palm residues caused the ineffectiveness. A novel approach of reducing recalcitrance of biomass through hydrothermal pretreatment prior to DESs treatment was proposed to revive the effectiveness of DESs on enhancing cellulose digestibility. The results showed that hydrothermal treatment effectively triggered the functioning of choline chloride/glycerol to boost enzymatic digestibility (1.7 times increase) of date palm residues. In addition, this study indicated that the significant increases of both xylan (25%) and lignin (22%) removals rather than the modification of cellulose crystallinity by choline chloride/glycerol were responsible for the enhancement of enzymatic digestibility.
AB - Deep eutectic solvents (DESs), featured as promising green solvents, have increasingly drawn attention in the processing of a wide spectrum of lignocellulosic biomass (e.g., corn stover, wheat straw, and rice straw). However, the ineffectiveness of enhancing enzymatic digestibility of lignocellulosic date palm residues by pretreatment using DESs (choline chloride/glycerol) only was observed in this study. Inspired by the different observation with counterparts, it was hypothesized that the recalcitrance of date palm residues caused the ineffectiveness. A novel approach of reducing recalcitrance of biomass through hydrothermal pretreatment prior to DESs treatment was proposed to revive the effectiveness of DESs on enhancing cellulose digestibility. The results showed that hydrothermal treatment effectively triggered the functioning of choline chloride/glycerol to boost enzymatic digestibility (1.7 times increase) of date palm residues. In addition, this study indicated that the significant increases of both xylan (25%) and lignin (22%) removals rather than the modification of cellulose crystallinity by choline chloride/glycerol were responsible for the enhancement of enzymatic digestibility.
UR - http://www.scopus.com/inward/record.url?scp=85019839980&partnerID=8YFLogxK
U2 - 10.1021/acs.iecr.6b04733
DO - 10.1021/acs.iecr.6b04733
M3 - Article
AN - SCOPUS:85019839980
SN - 0888-5885
VL - 56
SP - 3167
EP - 3174
JO - Industrial and Engineering Chemistry Research
JF - Industrial and Engineering Chemistry Research
IS - 12
ER -