TY - JOUR
T1 - A utilization of choline chloride-based deep eutectic solvent integrated with alkaline earth metal hexahydrate in the pretreatment of oil palm fronds
AU - New, Eng Kein
AU - Wu, Ta Yeong
AU - Voon, Khai Shing
AU - Procentese, Alessandra
AU - Shak, Katrina Pui Yee
AU - Teoh, Wen Hui
AU - Lim, Jun Wei
AU - Md. Jahim, Jamaliah
N1 - Funding Information:
This study was supported by funding from the Ministry of Higher Education, Malaysia under the Fundamental Research Grant Scheme (FRGS/1/2019/WAB01/MUSM/02/1). Additionally, the authors would like to thank Monash University Malaysia for providing E.K.N. with a Ph.D. scholarship. Also, the authors would like to thank the School of Engineering for providing UROP to K.S.V. an early opportunity to undergo a research experience at Monash University Malaysia.
Publisher Copyright:
©
Copyright:
Copyright 2021 Elsevier B.V., All rights reserved.
PY - 2021/2/10
Y1 - 2021/2/10
N2 - Over the past decade, deep eutectic solvents (DESs) have been touted as promising reagents in biomass valorization. This study focused on the novel utilization of type II choline chloride (ChCl)-based DESs by integrating group II metal chloride hexahydrate, namely, calcium chloride hexahydrate (CaCl2·6H2O) and magnesium chloride hexahydrate (MgCl2·6H2O) as the hydrogen bond donors for the pretreatment of oil palm fronds (OPF). Under atmospheric conditions, pretreatment with ChCl:CaCl2·6H2O (125 °C and 4.5 h) resulted in dual biomass valorization effects with a delignification of 46.51%, followed by xylose recovery and xylan removal at 54.12% and 78.67%, respectively. Such performance of ChCl:CaCl2·6H2O as a pretreatment solvent expedited the enzymatic glucose (59.31%) and total reducing sugar (63.89%) conversion in the OPF at a subsequent stage. Thus, the characterizations of pretreated OPF samples endorsed the application of type II ChCl-based DESs, particularly, ChCl:CaCl2·6H2O as a propitious approach for ligno-hemicellulose removal in pretreatment.
AB - Over the past decade, deep eutectic solvents (DESs) have been touted as promising reagents in biomass valorization. This study focused on the novel utilization of type II choline chloride (ChCl)-based DESs by integrating group II metal chloride hexahydrate, namely, calcium chloride hexahydrate (CaCl2·6H2O) and magnesium chloride hexahydrate (MgCl2·6H2O) as the hydrogen bond donors for the pretreatment of oil palm fronds (OPF). Under atmospheric conditions, pretreatment with ChCl:CaCl2·6H2O (125 °C and 4.5 h) resulted in dual biomass valorization effects with a delignification of 46.51%, followed by xylose recovery and xylan removal at 54.12% and 78.67%, respectively. Such performance of ChCl:CaCl2·6H2O as a pretreatment solvent expedited the enzymatic glucose (59.31%) and total reducing sugar (63.89%) conversion in the OPF at a subsequent stage. Thus, the characterizations of pretreated OPF samples endorsed the application of type II ChCl-based DESs, particularly, ChCl:CaCl2·6H2O as a propitious approach for ligno-hemicellulose removal in pretreatment.
UR - http://www.scopus.com/inward/record.url?scp=85100604512&partnerID=8YFLogxK
U2 - 10.1021/acs.iecr.0c05052
DO - 10.1021/acs.iecr.0c05052
M3 - Article
AN - SCOPUS:85100604512
VL - 60
SP - 2011
EP - 2026
JO - Industrial and Engineering Chemistry Research
JF - Industrial and Engineering Chemistry Research
SN - 0888-5885
IS - 5
ER -