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Thermally activated natural chalcopyrite for Fenton-like degradation of Rhodamine B: Catalyst characterization, performance evaluation, and catalytic mechanism
Abstract
In this work, catalytic activity of natural chalcopyrite (CuFeS2) was improved by thermal activation. The modified chalcopyrite was used as efficient catalyst for degradation of organic dye Rhodamine B (RhB) through advanced oxidation process (AOP). Effects of catalyst dosage, H2O2 concentration, reaction temperature, solution pH, anions, and natural organic matter on the degradation efficiency of RhB were investigated. This study revealed that thermal activation at 300°C changed the chemical valency of surface elements rather than transforming the major chemical phase of natural chalcopyrite. The Fenton-like degradation of RhB was significantly improved by thermally activated chalcopyrite. RhB degradation could be obtained under broad pH and showed high resistance to natural organic matter and anions. Under optimal conditions H2O2 43.0 mM, catalyst 0.75 g/L, initial pH 4.0, and reaction temperature 25°C, the degradation of RhB reached 96.7% at 50 min. Based on the rate constant of reaction kinetics, the activation energy for RhB degradation was calculated to be 9 kJ/mol. Radical scavenging experiments and electron paramagnetic resonance (EPR) technique demonstrated that RhB degradation was dominated by the generated hydroxyl radicals in activated chalcopyrite/H2O2 system. The formation of surface sulfates resulted from thermal activation induced the dissolved copper or iron ions, and promoted H2O2 activation and facilitated RhB degradation by reactive hydroxyl radicals. This…
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The reduction in radical production leads to a decrease in decolorization efficiency.
“The reduction in radical production leads to a decrease in decolorization efficiency [256].”
From Recent Advances in the Remediation of Textile-Dye-Containing Wastewater: Prioritizing Human Health and Sustainable Wastewater Treatment (2024) · cites this paper as [256]
The effectiveness of wastewater decolorization is enhanced in an acidic environment.
“The effectiveness of wastewater decolorization is enhanced in an acidic environment [256,257].”
From Recent Advances in the Remediation of Textile-Dye-Containing Wastewater: Prioritizing Human Health and Sustainable Wastewater Treatment (2024) · cites this paper as [256]
The H2O2-UV process generates O2, which may be effectively utilized for aerobic treatment.
“This process generates O 2 , which may be effectively utilized for aerobic treatment [256].”
From Recent Advances in the Remediation of Textile-Dye-Containing Wastewater: Prioritizing Human Health and Sustainable Wastewater Treatment (2024) · cites this paper as [256]
The breakdown of organic pollutants is facilitated by the OH- radical through four primary routes: radical addition, hydrogen abstraction, electron transfer, and radical combination.
“The breakdown of organic pollutants is facilitated by the OH -radical through four primary routes, radical addition, hydrogen abstraction, electron transfer, and radical combination [256,257].”
From Recent Advances in the Remediation of Textile-Dye-Containing Wastewater: Prioritizing Human Health and Sustainable Wastewater Treatment (2024) · cites this paper as [256]
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Heterogeneous Fenton catalysts: A review of recent advances
Thomas, N., Dionysiou, D. D., & Pillai, S. C. (2021) · Journal of Hazardous Materials · doi:10.1016/j.jhazmat.2020.124082 · Cited by 889
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Periyasamy, A. P. (2024) · Sustainability · doi:10.3390/su16020495 · Cited by 652
Metadata
- Authors
- Yang, J., Jia, K., Lu, S., Cao, Y., Boczkaj, G., & Wang, C.
- ORCID
- Boczkaj, Grzegorz
- Venue
- Journal of Environmental Chemical Engineering
- Publisher
- Elsevier BV
- Published
- 2024-02
- Volume
- 12
- Issue
- 1
- Pages
- 111469
- ISSN
- 2213-3437
- Cited by
- 19
- References
- 1
- Language
- en
- Licence
- Funders
- National Natural Science Foundation of China (52004251)
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