TY - JOUR
T1 - Potential use of pure and diluted choline chloride-based deep eutectic solvent in delignification of oil palm fronds
AU - New, Eng Kein
AU - Wu, Ta Yeong
AU - Tien Loong Lee, Cornelius Basil
AU - Poon, Zi Yet
AU - Loow, Yu Loong
AU - Wei Foo, Luther Yang
AU - Procentese, Alessandra
AU - Siow, Lee Fong
AU - Teoh, Wen Hui
AU - Nik Daud, Nik Norsyahariati
AU - Jahim, Jamaliah Md
AU - Mohammad, Abdul Wahab
N1 - Funding Information:
The funding of this research is supported by Ministry of Higher Education under Fundamental Research Grant Scheme ( FRGS/1/2016/WAB01/MUSM/02/2 ) and Long Term Research Grant Scheme ( LRGS/2013/UKM-UKM/PT/01 ). Additionally, the authors would like to thank Monash University Malaysia for providing E.K. New, C.B.T.L. Lee and Y.-L. Loow with postgraduate scholarships. Lastly, the authors would like to thank School of Engineering for providing UROP to L.Y.W. Foo an early opportunity to undergo a research experience at Monash University Malaysia.
Publisher Copyright:
© 2018
Copyright:
Copyright 2020 Elsevier B.V., All rights reserved.
PY - 2019/3
Y1 - 2019/3
N2 - The existence of deep eutectic solvents (DESs) has improved the process of biomass transformation and valorization due to its ability to break down the recalcitrant structure of biomass via delignification. However, the high viscosity of DES is one of the factors that restraints its effectiveness in delignification of biomass. The addition of water was expected to reduce the viscosity of DES and improve the process consequently. This study investigated the effects of water content in the DES (choline chloride:urea in 1:2 M ratio) on delignification of oil palm fronds (OPF), which are underutilized but available abundantly in Malaysia. The pretreatment was carried out at 120 °C for 4 h using DES at a solid-to-liquid ratio of 1:10 (w/v). In terms of lignin removal, 30 vol% of distilled water in DES was determined to achieve the optimal result at 16.31% in delignification of OPF. Delignification of OPF was further confirmed via a series of characterization tests. In comparison with pure DES, the aqueous DES enabled more favorable improvement of lignin removal in a biomass pretreatment.
AB - The existence of deep eutectic solvents (DESs) has improved the process of biomass transformation and valorization due to its ability to break down the recalcitrant structure of biomass via delignification. However, the high viscosity of DES is one of the factors that restraints its effectiveness in delignification of biomass. The addition of water was expected to reduce the viscosity of DES and improve the process consequently. This study investigated the effects of water content in the DES (choline chloride:urea in 1:2 M ratio) on delignification of oil palm fronds (OPF), which are underutilized but available abundantly in Malaysia. The pretreatment was carried out at 120 °C for 4 h using DES at a solid-to-liquid ratio of 1:10 (w/v). In terms of lignin removal, 30 vol% of distilled water in DES was determined to achieve the optimal result at 16.31% in delignification of OPF. Delignification of OPF was further confirmed via a series of characterization tests. In comparison with pure DES, the aqueous DES enabled more favorable improvement of lignin removal in a biomass pretreatment.
KW - Biomass valorization
KW - Biorefinery
KW - Green solvent
KW - Lignin
KW - Lignocellulosic biomass
KW - Waste management
UR - http://www.scopus.com/inward/record.url?scp=85060346131&partnerID=8YFLogxK
U2 - 10.1016/j.psep.2018.11.015
DO - 10.1016/j.psep.2018.11.015
M3 - Article
AN - SCOPUS:85060346131
SN - 0957-5820
VL - 123
SP - 190
EP - 198
JO - Process Safety and Environmental Protection
JF - Process Safety and Environmental Protection
ER -