Efficient Chloroquine Removal by Electro-Fenton with FeS<inf>2</inf>-Modified Cathode: Performance, Influencing Factors, Pathway Contributions, and Degradation Mechanisms

Lin, Y; Chen, Y; Chen, J; Chen, J; Yang, L; Wei, W; Ni, BJ; Chen, X

Efficient Chloroquine Removal by Electro-Fenton with FeS<inf>2</inf>-Modified Cathode: Performance, Influencing Factors, Pathway Contributions, and Degradation Mechanisms

Lin, Y Chen, Y Chen, J Chen, J Yang, L Wei, W

Ni, BJ Chen, X

Permalink

Publisher:: AMER CHEMICAL SOC
Publication Type:: Journal Article
Citation:: ACS ES and T Water, 2023, 3, (8), pp. 2786-2796
Issue Date:: 2023-08-11

Closed Access

	Filename	Description	Size
	lin-et-al-2023-efficient-chloroquine-removal-by-electro-fenton-with-fes2-modified-cathode-performance-influencing(1).pdf	Published version	5.53 MB	Adobe PDF	View/Open

Copyright Clearance Process

Recently Added
In Progress
Closed Access

This item is closed access and not available.

Full metadata record

Field	Value	Language
dc.contributor.author	Lin, Y
dc.contributor.author	Chen, Y
dc.contributor.author	Chen, J
dc.contributor.author	Chen, J
dc.contributor.author	Yang, L
dc.contributor.author	Wei, W https://orcid.org/0000-0001-5613-337X
dc.contributor.author	Ni, BJ
dc.contributor.author	Chen, X
dc.date.accessioned	2024-04-23T05:16:15Z
dc.date.available	2024-04-23T05:16:15Z
dc.date.issued	2023-08-11
dc.identifier.citation	ACS ES and T Water, 2023, 3, (8), pp. 2786-2796
dc.identifier.issn	2690-0637
dc.identifier.issn	2690-0637
dc.identifier.uri	http://hdl.handle.net/10453/178282
dc.description.abstract	The application of chloroquine (CLQ) due to its antibacterial/antiviral nature and high potential of being persistent and bioaccumulative poses a significant environmental threat. In this study, the electro-Fenton (EF) process with pyrite (FeS2)-modified graphite felt (FeS2/GF) as the cathode (EF-FeS2/GF), capable of providing a stable acidic environment with a solution pH of 3.0 was constructed and found to (i) achieve 83.3 ± 0.4% 60 min CLQ removal and (ii) maintain about 60.0% CLQ removal during consecutive batch tests. FeS2 loading amount, current density applied, and spacing between electrodes all influenced the efficacy of EF-FeS2/GF, with the optimum CLQ removal obtained at 10 mg, 150 mA, and 2.0 cm, respectively. Adsorption and electrocatalysis were both observed to contribute to the CLQ removal while the EF process with the verified functioning of ·OH played a dominant role. Based on the detected intermediates with identified ecotoxicities, two main paths were postulated to describe the degradation processes which led to the mineralization of CLQ. These findings supported that the EF-FeS2/GF could be an efficient technology to treat wastewater contaminated with CLQ.
dc.language	English
dc.publisher	AMER CHEMICAL SOC
dc.relation.ispartof	ACS ES and T Water
dc.relation.isbasedon	10.1021/acsestwater.3c00283
dc.rights	info:eu-repo/semantics/closedAccess
dc.title	Efficient Chloroquine Removal by Electro-Fenton with FeS<inf>2</inf>-Modified Cathode: Performance, Influencing Factors, Pathway Contributions, and Degradation Mechanisms
dc.type	Journal Article
utslib.citation.volume	3
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	2024-04-23T05:16:13Z
pubs.issue	8
pubs.publication-status	Published
pubs.volume	3
utslib.citation.issue	8

Abstract:

The application of chloroquine (CLQ) due to its antibacterial/antiviral nature and high potential of being persistent and bioaccumulative poses a significant environmental threat. In this study, the electro-Fenton (EF) process with pyrite (FeS2)-modified graphite felt (FeS2/GF) as the cathode (EF-FeS2/GF), capable of providing a stable acidic environment with a solution pH of 3.0 was constructed and found to (i) achieve 83.3 ± 0.4% 60 min CLQ removal and (ii) maintain about 60.0% CLQ removal during consecutive batch tests. FeS2 loading amount, current density applied, and spacing between electrodes all influenced the efficacy of EF-FeS2/GF, with the optimum CLQ removal obtained at 10 mg, 150 mA, and 2.0 cm, respectively. Adsorption and electrocatalysis were both observed to contribute to the CLQ removal while the EF process with the verified functioning of ·OH played a dominant role. Based on the detected intermediates with identified ecotoxicities, two main paths were postulated to describe the degradation processes which led to the mineralization of CLQ. These findings supported that the EF-FeS2/GF could be an efficient technology to treat wastewater contaminated with CLQ.

Please use this identifier to cite or link to this item:

http://hdl.handle.net/10453/178282