Processing thermogravimetric analysis data for isoconversional kinetic analysis of lignocellulosic biomass pyrolysis: case study of corn stalk
Processing thermogravimetric analysis data for isoconversional kinetic analysis of lignocellulosic biomass pyrolysis: case study of corn stalk
Modeling of lignocellulosic biomass pyrolysis processes can be used to determine their key operating and design parameters. This requires significant amount of information about pyrolysis kinetic parameters, in particular the activation energy. Thermogravimetric analysis (TGA) is the most commonly used tool to obtain experimental kinetic data, and isoconversional kinetic analysis is the most effective way for processing TGA data to calculate effective activation energies for lignocellulosic biomass pyrolysis. This paper reviews the overall procedure of processing TGA data for isoconversional kinetic analysis of lignocellulosic biomass pyrolysis by using the Friedman isoconversional method. This includes the removal of “error” data points and dehydration stage from original TGA data, transformation of TGA data to conversion data, differentiation of conversion data and smoothing of derivative conversion data, interpolation of conversion and derivative conversion data, isoconversional calculations, and reconstruction of kinetic process. The detailed isoconversional kinetic analysis of TGA data obtained from the pyrolysis of corn stalk at five heating rates were presented. The results have shown that the effective activation energies of corn stalk pyrolysis vary from 148 to 473 kJ mol−1 when the conversion ranges from 0.05 to 0.85.
Biomass pyrolysis, Effective activation energy, Isoconversional kinetic method, Kinetic analysis, Thermogravimetric analysis (TGA)
2705-2715
Cai, Junmeng
9e5ac5c2-f617-4571-a0f5-687670340568
Xu, Di
b68db91f-c4d1-42c7-bd9d-f23f3aa2ec40
Dong, Zhujun
2d1b6a22-68c9-4439-98a1-9ac182d92ead
Yu, Xi
7e4f553f-cc11-4c6e-ad6d-9fb5c3c07a60
Yang, Yang
4f250291-4405-49b3-a662-eb9810e00415
Banks, Scott W.
a2fa7f01-1518-4014-9ddb-5793559a37d8
Bridgwater, Anthony V.
0bb8f904-9940-4063-a29c-4b8c006786b1
23 December 2017
Cai, Junmeng
9e5ac5c2-f617-4571-a0f5-687670340568
Xu, Di
b68db91f-c4d1-42c7-bd9d-f23f3aa2ec40
Dong, Zhujun
2d1b6a22-68c9-4439-98a1-9ac182d92ead
Yu, Xi
7e4f553f-cc11-4c6e-ad6d-9fb5c3c07a60
Yang, Yang
4f250291-4405-49b3-a662-eb9810e00415
Banks, Scott W.
a2fa7f01-1518-4014-9ddb-5793559a37d8
Bridgwater, Anthony V.
0bb8f904-9940-4063-a29c-4b8c006786b1
Cai, Junmeng, Xu, Di, Dong, Zhujun, Yu, Xi, Yang, Yang, Banks, Scott W. and Bridgwater, Anthony V.
(2017)
Processing thermogravimetric analysis data for isoconversional kinetic analysis of lignocellulosic biomass pyrolysis: case study of corn stalk.
Renewable and Sustainable Energy Reviews, 82, .
(doi:10.1016/j.rser.2017.09.113).
Abstract
Modeling of lignocellulosic biomass pyrolysis processes can be used to determine their key operating and design parameters. This requires significant amount of information about pyrolysis kinetic parameters, in particular the activation energy. Thermogravimetric analysis (TGA) is the most commonly used tool to obtain experimental kinetic data, and isoconversional kinetic analysis is the most effective way for processing TGA data to calculate effective activation energies for lignocellulosic biomass pyrolysis. This paper reviews the overall procedure of processing TGA data for isoconversional kinetic analysis of lignocellulosic biomass pyrolysis by using the Friedman isoconversional method. This includes the removal of “error” data points and dehydration stage from original TGA data, transformation of TGA data to conversion data, differentiation of conversion data and smoothing of derivative conversion data, interpolation of conversion and derivative conversion data, isoconversional calculations, and reconstruction of kinetic process. The detailed isoconversional kinetic analysis of TGA data obtained from the pyrolysis of corn stalk at five heating rates were presented. The results have shown that the effective activation energies of corn stalk pyrolysis vary from 148 to 473 kJ mol−1 when the conversion ranges from 0.05 to 0.85.
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Published date: 23 December 2017
Additional Information:
Funding Information:
Junmeng gratefully acknowledge the financial support from IRSES ECOFUEL Program ( FP7-PEOPLE-2009-IRSES 246772 ) and Shanghai Jiao Tong University ( IPP IPP 15137 ). Xi Yu and Anthony V. Bridgwater gratefully acknowledge the research grant from EPSRC ( EP/M01343X/1 ). The authors greatfully acknowledge the helps from Miss Weixuan Wu about isoconversional kinetic methods and Mr. Yang Yu about data smoothing.
Keywords:
Biomass pyrolysis, Effective activation energy, Isoconversional kinetic method, Kinetic analysis, Thermogravimetric analysis (TGA)
Identifiers
Local EPrints ID: 481903
URI: http://eprints.soton.ac.uk/id/eprint/481903
ISSN: 1364-0321
PURE UUID: 2f3ac28e-8832-428f-beea-db051323edc8
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Date deposited: 12 Sep 2023 17:01
Last modified: 18 Mar 2024 04:14
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Author:
Junmeng Cai
Author:
Di Xu
Author:
Zhujun Dong
Author:
Xi Yu
Author:
Yang Yang
Author:
Scott W. Banks
Author:
Anthony V. Bridgwater
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