Red mud-derived iron carbon catalyst for the removal of organic pollutants in wastewater.

Fei, Y; Han, N; Shi, J; Tang, S; Zhuang, H; Wang, L; Ran, J; Gao, E; Habila, MA; Chen, Z; Tao, D; Ni, B-J; Jiang, M

Red mud-derived iron carbon catalyst for the removal of organic pollutants in wastewater.

Fei, Y Han, N Shi, J Tang, S Zhuang, H Wang, L Ran, J Gao, E Habila, MA Chen, Z

Tao, D Ni, B-J Jiang, M

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Publisher:: Elsevier
Publication Type:: Journal Article
Citation:: Chemosphere, 2023, 337, pp. 139211
Issue Date:: 2023-10

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Field	Value	Language
dc.contributor.author	Fei, Y
dc.contributor.author	Han, N
dc.contributor.author	Shi, J
dc.contributor.author	Tang, S
dc.contributor.author	Zhuang, H
dc.contributor.author	Wang, L
dc.contributor.author	Ran, J
dc.contributor.author	Gao, E
dc.contributor.author	Habila, MA
dc.contributor.author	Chen, Z https://orcid.org/0000-0003-0627-0856
dc.contributor.author	Tao, D
dc.contributor.author	Ni, B-J
dc.contributor.author	Jiang, M
dc.date.accessioned	2024-04-12T04:26:29Z
dc.date.available	2023-06-11
dc.date.available	2024-04-12T04:26:29Z
dc.date.issued	2023-10
dc.identifier.citation	Chemosphere, 2023, 337, pp. 139211
dc.identifier.issn	0045-6535
dc.identifier.issn	1879-1298
dc.identifier.uri	http://hdl.handle.net/10453/177822
dc.description.abstract	In order to reduce the environmental hazards of red mud (RM) and realize its resource utilization, in this study, RM-based iron-carbon micro-electrolysis material (RM-MEM) were prepared by a carbothermal reduction process using RM as raw material. The influence of the preparation conditions on the phase transformation and structural characteristics of the RM-MEM were investigated during the reduction process. The ability of RM-MEM to remove organic pollutants from wastewater was evaluated. The results showed that RM-MEM prepared at a reduction temperature of 1100 °C, a reduction time of 50 min and a coal dosage of 50% had the best removal effect for the degradation of methylene blue (MB). When the initial MB concentration was 20 mg L-1, the amount of RM-MEM material was 4 g L-1, the initial pH was 7, and the degradation efficiency reached 99.75% after 60 min. When RM-MEM is split into carbon free and iron free parts for use, the degradation effect becomes worse. Compared to other materials, RM-MEM has lower cost and better degradation. X-ray diffraction (XRD) analysis showed that hematite was transformed to zero-valent iron with the increase in the roasting temperature. Scanning electron microscopy (SEM) and energy spectroscopy (EDS) analysis showed that micron-sized ZVI particles were formed in the RM-MEM, and increasing the carbon thermal reduction temperature was beneficial to the growth of zero-valent iron particles.
dc.format	Print-Electronic
dc.language	eng
dc.publisher	Elsevier
dc.relation.ispartof	Chemosphere
dc.relation.isbasedon	10.1016/j.chemosphere.2023.139211
dc.rights	info:eu-repo/semantics/closedAccess
dc.subject.classification	Environmental Sciences
dc.subject.classification	Meteorology & Atmospheric Sciences
dc.subject.mesh	Wastewater
dc.subject.mesh	Environmental Pollutants
dc.subject.mesh	Water Pollutants, Chemical
dc.subject.mesh	X-Ray Diffraction
dc.subject.mesh	Temperature
dc.subject.mesh	Environmental Pollutants
dc.subject.mesh	Water Pollutants, Chemical
dc.subject.mesh	X-Ray Diffraction
dc.subject.mesh	Temperature
dc.subject.mesh	Wastewater
dc.subject.mesh	Wastewater
dc.subject.mesh	Environmental Pollutants
dc.subject.mesh	Water Pollutants, Chemical
dc.subject.mesh	X-Ray Diffraction
dc.subject.mesh	Temperature
dc.title	Red mud-derived iron carbon catalyst for the removal of organic pollutants in wastewater.
dc.type	Journal Article
utslib.citation.volume	337
utslib.location.activity	England
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
pubs.organisational-group	University of Technology Sydney/Strength - CTWW - Centre for Technology in Water and Wastewater Treatment
utslib.copyright.status	closed_access	*
dc.date.updated	2024-04-12T04:26:25Z
pubs.publication-status	Published
pubs.volume	337

Abstract:

In order to reduce the environmental hazards of red mud (RM) and realize its resource utilization, in this study, RM-based iron-carbon micro-electrolysis material (RM-MEM) were prepared by a carbothermal reduction process using RM as raw material. The influence of the preparation conditions on the phase transformation and structural characteristics of the RM-MEM were investigated during the reduction process. The ability of RM-MEM to remove organic pollutants from wastewater was evaluated. The results showed that RM-MEM prepared at a reduction temperature of 1100 °C, a reduction time of 50 min and a coal dosage of 50% had the best removal effect for the degradation of methylene blue (MB). When the initial MB concentration was 20 mg L-1, the amount of RM-MEM material was 4 g L-1, the initial pH was 7, and the degradation efficiency reached 99.75% after 60 min. When RM-MEM is split into carbon free and iron free parts for use, the degradation effect becomes worse. Compared to other materials, RM-MEM has lower cost and better degradation. X-ray diffraction (XRD) analysis showed that hematite was transformed to zero-valent iron with the increase in the roasting temperature. Scanning electron microscopy (SEM) and energy spectroscopy (EDS) analysis showed that micron-sized ZVI particles were formed in the RM-MEM, and increasing the carbon thermal reduction temperature was beneficial to the growth of zero-valent iron particles.

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http://hdl.handle.net/10453/177822