Decomposition Characteristics and Kinetics of Microalgae in N2 and CO2 Atmospheres by a Thermogravimetry

Decomposition Characteristics and Kinetics of Microalgae in N2 and CO2 Atmospheres by a Thermogravimetry

The thermal degradation characteristics of microalgae were investigated in highly purified N2 and CO2 atmospheres by a thermogravimetric analysis (TGA) under different heating rates (10, 20, and 40°C/min). The results indicated that the total residual mass in CO2 atmosphere (16.86%) was less than in...

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Main Authors: Xu Qing, Ma Xiaoqian, Yu Zhaosheng, Cai Zilin, Ling Changming
Format: Article
Language:English
Published: Hindawi Limited 2017-01-01
Series:Journal of Combustion
Online Access:http://dx.doi.org/10.1155/2017/6160234
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spelling doaj-ee4ec3ccae4d4379bd1ac312003129ec2021-07-02T09:22:31ZengHindawi LimitedJournal of Combustion2090-19682090-19762017-01-01201710.1155/2017/61602346160234Decomposition Characteristics and Kinetics of Microalgae in N2 and CO2 Atmospheres by a ThermogravimetryXu Qing0Ma Xiaoqian1Yu Zhaosheng2Cai Zilin3Ling Changming4School of Electric Power, South China University of Technology, Wushan Road 381, Tianhe District, Guangzhou City 510640, ChinaSchool of Electric Power, South China University of Technology, Wushan Road 381, Tianhe District, Guangzhou City 510640, ChinaSchool of Electric Power, South China University of Technology, Wushan Road 381, Tianhe District, Guangzhou City 510640, ChinaSchool of Electric Power, South China University of Technology, Wushan Road 381, Tianhe District, Guangzhou City 510640, ChinaSchool of Mechanical and Power Engineering, Guangdong Ocean University, Jiefang Road 40, Xiashan District, Zhanjiang City 524025, ChinaThe thermal degradation characteristics of microalgae were investigated in highly purified N2 and CO2 atmospheres by a thermogravimetric analysis (TGA) under different heating rates (10, 20, and 40°C/min). The results indicated that the total residual mass in CO2 atmosphere (16.86%) was less than in N2 atmosphere (23.12%); in addition, the kinetics of microalgae in N2 and CO2 atmospheres could be described by the pseudo bicomponent separated state model (PBSM) and pseudo-multi-component overall model (PMOM), respectively. The kinetic parameters calculated by Coats-Redfern method showed that, in CO2 atmosphere, the apparent activation energy (E) of microalgae was between 9.863 and 309.381 kJ mol−1 and the reaction order (n) was varied from 1.1 to 7. The kinetic parameters (E,n) of the second stage in CO2 atmosphere were quite similar to those in N2 atmosphere.http://dx.doi.org/10.1155/2017/6160234
collection DOAJ
language English
format Article
sources DOAJ
author Xu Qing
Ma Xiaoqian
Yu Zhaosheng
Cai Zilin
Ling Changming
spellingShingle Xu Qing
Ma Xiaoqian
Yu Zhaosheng
Cai Zilin
Ling Changming
Decomposition Characteristics and Kinetics of Microalgae in N2 and CO2 Atmospheres by a Thermogravimetry
Journal of Combustion
author_facet Xu Qing
Ma Xiaoqian
Yu Zhaosheng
Cai Zilin
Ling Changming
author_sort Xu Qing
title Decomposition Characteristics and Kinetics of Microalgae in N2 and CO2 Atmospheres by a Thermogravimetry
title_short Decomposition Characteristics and Kinetics of Microalgae in N2 and CO2 Atmospheres by a Thermogravimetry
title_full Decomposition Characteristics and Kinetics of Microalgae in N2 and CO2 Atmospheres by a Thermogravimetry
title_fullStr Decomposition Characteristics and Kinetics of Microalgae in N2 and CO2 Atmospheres by a Thermogravimetry
title_full_unstemmed Decomposition Characteristics and Kinetics of Microalgae in N2 and CO2 Atmospheres by a Thermogravimetry
title_sort decomposition characteristics and kinetics of microalgae in n2 and co2 atmospheres by a thermogravimetry
publisher Hindawi Limited
series Journal of Combustion
issn 2090-1968
2090-1976
publishDate 2017-01-01
description The thermal degradation characteristics of microalgae were investigated in highly purified N2 and CO2 atmospheres by a thermogravimetric analysis (TGA) under different heating rates (10, 20, and 40°C/min). The results indicated that the total residual mass in CO2 atmosphere (16.86%) was less than in N2 atmosphere (23.12%); in addition, the kinetics of microalgae in N2 and CO2 atmospheres could be described by the pseudo bicomponent separated state model (PBSM) and pseudo-multi-component overall model (PMOM), respectively. The kinetic parameters calculated by Coats-Redfern method showed that, in CO2 atmosphere, the apparent activation energy (E) of microalgae was between 9.863 and 309.381 kJ mol−1 and the reaction order (n) was varied from 1.1 to 7. The kinetic parameters (E,n) of the second stage in CO2 atmosphere were quite similar to those in N2 atmosphere.
url http://dx.doi.org/10.1155/2017/6160234
work_keys_str_mv AT xuqing decompositioncharacteristicsandkineticsofmicroalgaeinn2andco2atmospheresbyathermogravimetry
AT maxiaoqian decompositioncharacteristicsandkineticsofmicroalgaeinn2andco2atmospheresbyathermogravimetry
AT yuzhaosheng decompositioncharacteristicsandkineticsofmicroalgaeinn2andco2atmospheresbyathermogravimetry
AT caizilin decompositioncharacteristicsandkineticsofmicroalgaeinn2andco2atmospheresbyathermogravimetry
AT lingchangming decompositioncharacteristicsandkineticsofmicroalgaeinn2andco2atmospheresbyathermogravimetry
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