OPEFB pretreatment using the low-cost N,N,N-dimethylbutylammonium hydrogen sulfate ionic liquid under varying conditions

This study investigates the effects of temperature and period on the pretreatment of OPEFB using the low-cost N , N , N -dimethylbutylammonium hydrogen sulfate ionic liquid ([DMBA][HSO 4 ] IL) with 20 wt% of water. The results demonstrate that higher pretreatment temperatures (120, 150, and 170 °C)...

Full description

Saved in:
Bibliographic Details
Published in:Scientific reports 2023-12, Vol.13 (1), p.22354-22354, Article 22354
Main Authors: Shikh Zahari, S. M. Shahrul Nizan, Liu, Yichen, Yao, Putian, Ideris, Mahfuzah Samirah, Azman, Hazeeq Hazwan, Hallett, Jason P.
Format: Article
Language:English
Subjects:
631/61
639/166/898
639/638
Biomass
Biopolymers
Cellulose
Depolymerization
Humanities and Social Sciences
Hydrogen
Lignin
Molecular weight
multidisciplinary
Science
Science (multidisciplinary)
Sulfates
Sulfuric acid
Temperature
Temperature effects
Citations: Items that this one cites
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:This study investigates the effects of temperature and period on the pretreatment of OPEFB using the low-cost N , N , N -dimethylbutylammonium hydrogen sulfate ionic liquid ([DMBA][HSO 4 ] IL) with 20 wt% of water. The results demonstrate that higher pretreatment temperatures (120, 150, and 170 °C) and longer periods (0.5, 1, and 2 h) enhanced lignin recovery, resulting in increased purity of the recovered pulp and subsequently enhanced glucose released during enzymatic hydrolysis. However, at 170 °C, prolonging the period led to cellulose degradation and the formation of pseudo-lignin deposited on the pulps, resulting in a decreasing-trend in glucose released. Finally, the analysis of extracted lignin reveals that increasing pretreatment severity intensified lignin depolymerisation and condensation, leading to a decrease in number average molecular weight (M n ), weight average molecular weight (M w ) and polydispersity index (Đ) values.
ISSN:2045-2322
2045-2322
DOI:10.1038/s41598-023-48722-0