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Thermochemical and Toxic Element Behavior during Co-Combustion of Coal and Municipal Sludge

The thermochemical and kinetic behavior of co-combustion of coal, municipal sludge (MS) and their blends at different ratios were investigated by thermogravimetric analysis. Simulation experiments were performed in a vacuum tube furnace to determine the conversion behavior of toxic elements. The res...

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Autores principales: Chen, Yongchun, Gui, Herong, Xia, Ziwei, Chen, Xing, Zheng, Liugen
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2021
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8307717/
https://www.ncbi.nlm.nih.gov/pubmed/34299445
http://dx.doi.org/10.3390/molecules26144170
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author Chen, Yongchun
Gui, Herong
Xia, Ziwei
Chen, Xing
Zheng, Liugen
author_facet Chen, Yongchun
Gui, Herong
Xia, Ziwei
Chen, Xing
Zheng, Liugen
author_sort Chen, Yongchun
collection PubMed
description The thermochemical and kinetic behavior of co-combustion of coal, municipal sludge (MS) and their blends at different ratios were investigated by thermogravimetric analysis. Simulation experiments were performed in a vacuum tube furnace to determine the conversion behavior of toxic elements. The results show that the combustion processes of the blends of coal and municipal sludge are divided into three stages and the combustion curves of the blends are located between those of individual coal and municipal sludge samples. The DTG(max) of the sample with 10% sludge addition reaches a maximum at the heating rate of 20 °C/min, indicating that the combustion characteristics of coal can be improved during co-combustion. Strong interactions were observed between coal and municipal sludge during the co-combustion. The volatilization rates of toxic elements decrease with an increasing proportion of sludge in the blends during co-combustion, which indicates that the co-combustion of coal and sludge can effectively reduce the volatilization rate of toxic elements. The study reflects the potential of municipal sludge as a blended fuel and the environmental effects of co-combustion of coal and municipal sludge.
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spelling pubmed-83077172021-07-25 Thermochemical and Toxic Element Behavior during Co-Combustion of Coal and Municipal Sludge Chen, Yongchun Gui, Herong Xia, Ziwei Chen, Xing Zheng, Liugen Molecules Article The thermochemical and kinetic behavior of co-combustion of coal, municipal sludge (MS) and their blends at different ratios were investigated by thermogravimetric analysis. Simulation experiments were performed in a vacuum tube furnace to determine the conversion behavior of toxic elements. The results show that the combustion processes of the blends of coal and municipal sludge are divided into three stages and the combustion curves of the blends are located between those of individual coal and municipal sludge samples. The DTG(max) of the sample with 10% sludge addition reaches a maximum at the heating rate of 20 °C/min, indicating that the combustion characteristics of coal can be improved during co-combustion. Strong interactions were observed between coal and municipal sludge during the co-combustion. The volatilization rates of toxic elements decrease with an increasing proportion of sludge in the blends during co-combustion, which indicates that the co-combustion of coal and sludge can effectively reduce the volatilization rate of toxic elements. The study reflects the potential of municipal sludge as a blended fuel and the environmental effects of co-combustion of coal and municipal sludge. MDPI 2021-07-09 /pmc/articles/PMC8307717/ /pubmed/34299445 http://dx.doi.org/10.3390/molecules26144170 Text en © 2021 by the authors. https://creativecommons.org/licenses/by/4.0/Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
Chen, Yongchun
Gui, Herong
Xia, Ziwei
Chen, Xing
Zheng, Liugen
Thermochemical and Toxic Element Behavior during Co-Combustion of Coal and Municipal Sludge
title Thermochemical and Toxic Element Behavior during Co-Combustion of Coal and Municipal Sludge
title_full Thermochemical and Toxic Element Behavior during Co-Combustion of Coal and Municipal Sludge
title_fullStr Thermochemical and Toxic Element Behavior during Co-Combustion of Coal and Municipal Sludge
title_full_unstemmed Thermochemical and Toxic Element Behavior during Co-Combustion of Coal and Municipal Sludge
title_short Thermochemical and Toxic Element Behavior during Co-Combustion of Coal and Municipal Sludge
title_sort thermochemical and toxic element behavior during co-combustion of coal and municipal sludge
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8307717/
https://www.ncbi.nlm.nih.gov/pubmed/34299445
http://dx.doi.org/10.3390/molecules26144170
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