Thermogravimetric and mass-spectrometric analyses of combustion of spent potlining under N2/O2 and CO2/O2 atmospheres
Copyright © 2019 Elsevier Ltd. All rights reserved..
Thermal decomposition and gaseous evolution of the spent potlining (SPL) combustion were quantified using thermogravimetric and mass-spectrometric analyses in CO2/O2 and N2/O2 atmospheres using three heating rates (15, 20 and 25 °C/min). The thermal decomposition of SPL occurred mainly between 450 and 800 °C. Based on the four kinetic methods of Friedman, Starink, Kissinger-Akahira-Sunose and Flynn-Wall-Ozawa under the various conversion degrees (α) from 0.1 to 0.7, the lowest apparent activation energy was estimated at 149.81 kJ/mol in the 70% CO2/30% O2 atmosphere. The pre-exponential factor, and changes in entropy, enthalpy and free Gibbs energy were also estimated. The reaction model did not suggest a single reaction of the SPL combustion. With the α value of 0.25-0.7, the following function best described the reaction based on the Malek method: f(α) = 1/2α and G(α) = lnα2. The gases released during the combustion process included CO2, CO, NOx, HCN, and HF.
Medienart: |
E-Artikel |
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Erscheinungsjahr: |
2019 |
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Erschienen: |
2019 |
Enthalten in: |
Zur Gesamtaufnahme - volume:87 |
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Enthalten in: |
Waste management (New York, N.Y.) - 87(2019) vom: 15. März, Seite 237-249 |
Sprache: |
Englisch |
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Beteiligte Personen: |
Sun, Guang [VerfasserIn] |
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Links: |
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Themen: |
142M471B3J |
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Anmerkungen: |
Date Completed 12.09.2019 Date Revised 12.09.2019 published: Print-Electronic Citation Status MEDLINE |
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doi: |
10.1016/j.wasman.2019.01.047 |
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funding: |
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Förderinstitution / Projekttitel: |
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PPN (Katalog-ID): |
NLM29727970X |
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500 | |a Date Revised 12.09.2019 | ||
500 | |a published: Print-Electronic | ||
500 | |a Citation Status MEDLINE | ||
520 | |a Copyright © 2019 Elsevier Ltd. All rights reserved. | ||
520 | |a Thermal decomposition and gaseous evolution of the spent potlining (SPL) combustion were quantified using thermogravimetric and mass-spectrometric analyses in CO2/O2 and N2/O2 atmospheres using three heating rates (15, 20 and 25 °C/min). The thermal decomposition of SPL occurred mainly between 450 and 800 °C. Based on the four kinetic methods of Friedman, Starink, Kissinger-Akahira-Sunose and Flynn-Wall-Ozawa under the various conversion degrees (α) from 0.1 to 0.7, the lowest apparent activation energy was estimated at 149.81 kJ/mol in the 70% CO2/30% O2 atmosphere. The pre-exponential factor, and changes in entropy, enthalpy and free Gibbs energy were also estimated. The reaction model did not suggest a single reaction of the SPL combustion. With the α value of 0.25-0.7, the following function best described the reaction based on the Malek method: f(α) = 1/2α and G(α) = lnα2. The gases released during the combustion process included CO2, CO, NOx, HCN, and HF | ||
650 | 4 | |a Journal Article | |
650 | 4 | |a Oxy-fuel combustion | |
650 | 4 | |a Spent potlining | |
650 | 4 | |a TG-MS | |
650 | 4 | |a Thermodynamic analysis | |
650 | 7 | |a Carbon Dioxide |2 NLM | |
650 | 7 | |a 142M471B3J |2 NLM | |
700 | 1 | |a Zhang, Gang |e verfasserin |4 aut | |
700 | 1 | |a Liu, Jingyong |e verfasserin |4 aut | |
700 | 1 | |a Xie, Wuming |e verfasserin |4 aut | |
700 | 1 | |a Kuo, Jiahong |e verfasserin |4 aut | |
700 | 1 | |a Lu, Xingwen |e verfasserin |4 aut | |
700 | 1 | |a Buyukada, Musa |e verfasserin |4 aut | |
700 | 1 | |a Evrendilek, Fatih |e verfasserin |4 aut | |
700 | 1 | |a Sun, Shuiyu |e verfasserin |4 aut | |
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