Pretreatment and sugar recovery of oil palm fronds using choline chloride:calcium chloride hexahydrate integrated with metal chloride
Eng Kein New,
Ta Yeong Wu,
Shen Khang Tnah,
Alessandra Procentese and
Chin Kui Cheng
Energy, 2023, vol. 277, issue C
Abstract:
In this study, metal chlorides with different valences, namely potassium chloride (KCl), copper (ii) chloride (CuCl2) and iron (iii) chloride (FeCl3), were used as co-catalysts in a Type II deep eutectic solvent (DES) system, namely, choline chloride:calcium chloride hexahydrate (ChCl:CaCl2·6H2O). After determining their corresponding recommended pretreatment conditions, specific volumetric water content was integrated into the DES + co-catalyst system to aggrandize the pretreatment for oil palm fronds (OPF). At one atmospheric condition, pretreatment of OPF using ChCl:CaCl2·6H2O/1 wt% CuCl2/30 vol% water (115 °C, 1.5 h) and ChCl:CaCl2·6H2O/1 wt% FeCl3/20 vol% water (125 °C, 1.5 h) could produce xylose recovery up to 15.78 g/L (76.42%) and 15.02 g/L (72.74%), respectively. Additionally, both transition metal salt co-catalysts expedited the solvent systems with high lignin (≥50%), xylan (≥85%) and arabinan (∼100%) removal from the OPF. Therefore, applying the studied Type II DES containing co-catalyst while integrated with additional water content had enabled an effective OPF pretreatment for dissolving the ligno-hemicellulose components and expanded a bright horizon for biorefinery processes. A utilization of DES + co-catalyst system could lead to the reduction of energy intensity as compared to the conventional DES system.
Keywords: Biomass valorization; Biorefinery; Deep eutectic solvent; Delignification; Green solvent; Lignocellulosic biomass; Waste management; Wood technology (search for similar items in EconPapers)
Date: 2023
References: Add references at CitEc
Citations: View citations in EconPapers (1)
Downloads: (external link)
http://www.sciencedirect.com/science/article/pii/S0360544223008800
Full text for ScienceDirect subscribers only
Related works:
This item may be available elsewhere in EconPapers: Search for items with the same title.
Export reference: BibTeX
RIS (EndNote, ProCite, RefMan)
HTML/Text
Persistent link: https://EconPapers.repec.org/RePEc:eee:energy:v:277:y:2023:i:c:s0360544223008800
DOI: 10.1016/j.energy.2023.127486
Access Statistics for this article
Energy is currently edited by Henrik Lund and Mark J. Kaiser
More articles in Energy from Elsevier
Bibliographic data for series maintained by Catherine Liu (repec@elsevier.com).