Evaluation on the microwave-assisted chemical desulfurization for organic sulfur removal

Liu, J; Wang, Z; Qiao, Z; Chen, W; Zheng, L; Zhou, J

Evaluation on the microwave-assisted chemical desulfurization for organic sulfur removal

Liu, J Wang, Z Qiao, Z Chen, W Zheng, L

Zhou, J

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Publisher:: Elsevier BV
Publication Type:: Journal Article
Citation:: Journal of Cleaner Production, 2020, 267, pp. 121878-121878
Issue Date:: 2020-09-10

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Field	Value	Language
dc.contributor.author	Liu, J
dc.contributor.author	Wang, Z
dc.contributor.author	Qiao, Z
dc.contributor.author	Chen, W
dc.contributor.author	Zheng, L https://orcid.org/0000-0002-6352-8975
dc.contributor.author	Zhou, J
dc.date.accessioned	2021-06-21T01:09:30Z
dc.date.available	2021-06-21T01:09:30Z
dc.date.issued	2020-09-10
dc.identifier.citation	Journal of Cleaner Production, 2020, 267, pp. 121878-121878
dc.identifier.issn	0959-6526
dc.identifier.uri	http://hdl.handle.net/10453/149669
dc.description.abstract	Coal desulfurization is imperative to create clean coal and reducing harmful emissions during the combustion process. However, organic sulfur in coal is more difficult to remove than inorganic sulfur. Therefore, in this paper, a method of coal sample desulfurization using citric acid with microwave assisted was proposed, and experimental investigation was carried out. The influences of the particle size, reaction temperature, irradiation time, microwave power, and concentration of citric acid on desulfurization effect were studied and the corresponding optimal value was determined. The desulfurization effect was improved; the remove efficiencies of the total sulfur, organic sulfur and inorganic sulfur were 34.25%, 59.86% and 20.23%, respectively. In addition, XRD and FTIR were used to test and compare the coal samples before and after the experiment, and it was found that pyrite was transformed into H2S, S and the Fe2+ which was combined with citric acid to form a complex; The carbon-sulfur bond of sulfonate and the iron-sulfur bond of ferrous sulfide are both broken; Clean coal has a smoother surface. In general, microwave-assisted citric acid could potentially remove organic sulfur without any significant interference of the calorific value on coal. And compared with other desulfurizers, citric acid has the advantages of good desulfurization effect (especially organic sulfur), non-toxic, low corrosion and low cost, etc. The current research work may provide new routes and meaningful guidelines to pre-combustion desulfurization of coal.
dc.language	en
dc.publisher	Elsevier BV
dc.relation.ispartof	Journal of Cleaner Production
dc.relation.isbasedon	10.1016/j.jclepro.2020.121878
dc.rights	info:eu-repo/semantics/closedAccess
dc.subject	0907 Environmental Engineering, 0910 Manufacturing Engineering, 0915 Interdisciplinary Engineering
dc.subject.classification	Environmental Sciences
dc.title	Evaluation on the microwave-assisted chemical desulfurization for organic sulfur removal
dc.type	Journal Article
utslib.citation.volume	267
utslib.for	0907 Environmental Engineering
utslib.for	0910 Manufacturing Engineering
utslib.for	0915 Interdisciplinary Engineering
pubs.organisational-group	/University of Technology Sydney
pubs.organisational-group	/University of Technology Sydney/Faculty of Engineering and Information Technology
pubs.organisational-group	/University of Technology Sydney/Faculty of Engineering and Information Technology/School of Civil and Environmental Engineering
utslib.copyright.status	closed_access	*
dc.date.updated	2021-06-21T01:09:27Z
pubs.publication-status	Published
pubs.volume	267

Abstract:

Coal desulfurization is imperative to create clean coal and reducing harmful emissions during the combustion process. However, organic sulfur in coal is more difficult to remove than inorganic sulfur. Therefore, in this paper, a method of coal sample desulfurization using citric acid with microwave assisted was proposed, and experimental investigation was carried out. The influences of the particle size, reaction temperature, irradiation time, microwave power, and concentration of citric acid on desulfurization effect were studied and the corresponding optimal value was determined. The desulfurization effect was improved; the remove efficiencies of the total sulfur, organic sulfur and inorganic sulfur were 34.25%, 59.86% and 20.23%, respectively. In addition, XRD and FTIR were used to test and compare the coal samples before and after the experiment, and it was found that pyrite was transformed into H2S, S and the Fe2+ which was combined with citric acid to form a complex; The carbon-sulfur bond of sulfonate and the iron-sulfur bond of ferrous sulfide are both broken; Clean coal has a smoother surface. In general, microwave-assisted citric acid could potentially remove organic sulfur without any significant interference of the calorific value on coal. And compared with other desulfurizers, citric acid has the advantages of good desulfurization effect (especially organic sulfur), non-toxic, low corrosion and low cost, etc. The current research work may provide new routes and meaningful guidelines to pre-combustion desulfurization of coal.

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http://hdl.handle.net/10453/149669