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Pyrolysis of ionic liquid pretreated lignite: Effect of 1-butyl-3-methylimidazolium methyl sulfate pretreatment on kinetic and thermodynamic parameters of lignite.
- Source :
-
Energy Sources Part A: Recovery, Utilization & Environmental Effects . Jun2021, p1-17. 17p. 6 Illustrations, 3 Charts. - Publication Year :
- 2021
-
Abstract
- In this work, the effect of ionic liquid (IL) pretreatment on the pyrolytic behavior of lignite was analyzed by examining reactivity, kinetic, and thermodynamic parameters. Pretreatment of lignite with 1-butyl-3-methylimidazolium methyl sulfate ([Bmim][MeSO4]) was carried out at 150°C and 30 min followed by thermal analysis under an inert environment, at a constant ramp rate of 20°C/min. Ten Coats–Redfern (CR) models were applied to the TGA data to evaluate kinetic and thermodynamic parameters. IL-treated lignite increased volatile matter from 46.39% to 57.81% and reduced ash from 21.71% to 8.50%. DTG profiles indicated that [Bmim][MeSO4] accelerated the thermal degradation of lignite by breaking the hydrogen bonding structure of coal, which was statistically confirmed by a higher average rate of thermal degradation, mean relative reactivity (Rm), pyrolysis factor (PF), and lower activation energy (Eα) than untreated lignite. This study shows that [Bmim][MeSO4] could be an attractive eco-friendly pretreatment solvent for the thermochemical conversion of lignite. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 15567036
- Database :
- Academic Search Index
- Journal :
- Energy Sources Part A: Recovery, Utilization & Environmental Effects
- Publication Type :
- Academic Journal
- Accession number :
- 150759766
- Full Text :
- https://doi.org/10.1080/15567036.2021.1929575