TGA-FTIR study on the slow pyrolysis of lignin and cellulose-rich fractions derived from imidazolium-based ionic liquid pre-treatment of sugarcane straw

Halder, P, Kundu, S, Patel, S, Parthasarathy, R, Pramanik, B, Paz-Ferreiro, J and Shah, K 2019, 'TGA-FTIR study on the slow pyrolysis of lignin and cellulose-rich fractions derived from imidazolium-based ionic liquid pre-treatment of sugarcane straw', Energy Conversion and Management, vol. 200, pp. 1-11.


Document type: Journal Article
Collection: Journal Articles

Title TGA-FTIR study on the slow pyrolysis of lignin and cellulose-rich fractions derived from imidazolium-based ionic liquid pre-treatment of sugarcane straw
Author(s) Halder, P
Kundu, S
Patel, S
Parthasarathy, R
Pramanik, B
Paz-Ferreiro, J
Shah, K
Year 2019
Journal name Energy Conversion and Management
Volume number 200
Start page 1
End page 11
Total pages 11
Publisher Elsevier
Abstract Slow pyrolysis of regenerated cellulose-rich material (RCRM) and recovered lignin produced from imidazolium-based ionic liquid (IL) pre-treatment of sugarcane straw (SCS) was investigated employing a Thermogravimetric Analyser (TGA) instrument coupled with a Fourier-Transform Infrared (FTIR) spectroscopy. 1-ethyl-3-methylimidazolium acetate ([Emim][OAc]) pre-treatment of SCS altered the hydrogen bonds of cellulose and produced amorphous Cellulose II structure in RCRM. FTIR spectroscopic analysis of liquid products showed that the IL pre-treatment increased the production of furans from the pyrolysis of RCRM, because the presence of amorphous Cellulose II in RCRM enhanced the dehydration reaction during pyrolysis. Moreover, the recovered lignin from IL pre-treatment enhanced the production of phenol-rich pyrolysis oil due to the cleavage of β-O-4 ether bonds of lignin during pre-treatment. Scanning electron microscope (SEM) analysis indicated highly porous structure of both RCRM and recovered lignin derived biochars. The kinetic analysis using a hybrid approach (a combination of model-fitting and model-free methods) indicated a reduction in the activation energy for both RCRM and recovered lignin pyrolysis. It is concluded that IL pre-treatment of lignocellulosic biomass followed by low-temperature pyrolysis can be an efficient route for biorefinery production.
Subject Non-automotive Combustion and Fuel Engineering (incl. Alternative/Renewable Fuels)
Keyword(s) Enhanced furans production
Enhanced phenols production
Ionic liquid pre-treatment
Kinetic analysis
Slow pyrolysis
Sugarcane straw
DOI - identifier 10.1016/j.enconman.2019.112067
Copyright notice © 2019 Elsevier Ltd. All rights reserved.
ISSN 0196-8904
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