Chalcopyrite As an Oxidants Activator for Organic Pollutant Remediation: A Review of Mechanisms, Parameters, and Future Perspectives

Overview

Journal Heliyon

Specialty Social Sciences

Date 2023 Oct 9

PMID 37809581

Authors

Setareh Rostami- Javanroudi

Nazir Fattahi

Kiomars Sharafi

Hossein Arfaeinia

Masoud Moradi

Affiliations

Soon will be listed here.

Abstract

Advanced oxidation processes (AOPs) based on oxidants have attracted attention for the degradation of organic pollutants. The combination of chalcopyrite with oxidants such as persulfate, peroxide, percarbonate, and others shows promise as a system due to its ability to activate through various pathways, leading to the formation of numerous radical and non-radical species. In this review, the generation of sulfate radical (SR) and hydroxyl radical (HR) in AOPs were summarized. The significance of chalcopyrite in various approaches including Fenton, photo-Fenton, and photo/Fenton-like methods, as well as its involvement in electrochemical Fenton-based processes was discussed. The stability and reusability, toxicity, catalyst mechanism, and effects of operational parameters (pH, catalyst dosage, and oxidant concentration) are evaluated in detail. The review also discusses the role of Fe, Cu, S and S present in CuFeS in the generation of free radicals. Finally, guidelines for future research are presented in terms of future perspectives.

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