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
PY - 2021
Y1 - 2021
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, calciumchloride 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, calciumchloride 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.
U2 - 10.1021/acs.iecr.0c05052
DO - 10.1021/acs.iecr.0c05052
M3 - Journal article
VL - 60
SP - 2011
EP - 2026
JO - Industrial & Engineering Chemistry Research
JF - Industrial & Engineering Chemistry Research
SN - 0888-5885
IS - 5
ER -