Pyrite-mediated advanced oxidation processes: Applications, mechanisms, and enhancing strategies

Biao Song; Zhuotong Zeng; Eydhah Almatrafi; Maocai Shen; Weiping Xiong; Chengyun Zhou; Wenjun Wang; Guangming Zeng; Jilai Gong

doi:10.1016/j.watres.2022.118048

Pyrite-mediated advanced oxidation processes: Applications, mechanisms, and enhancing strategies

Water Res. 2022 Mar 1:211:118048. doi: 10.1016/j.watres.2022.118048. Epub 2022 Jan 9.

Authors

Biao Song¹, Zhuotong Zeng², Eydhah Almatrafi³, Maocai Shen⁴, Weiping Xiong¹, Chengyun Zhou¹, Wenjun Wang⁴, Guangming Zeng⁵, Jilai Gong⁶

Affiliations

¹ College of Environmental Science and Engineering and Key Laboratory of Environmental Biology and Pollution Control (Ministry of Education), Hunan University, Changsha 410082, PR China; Department of Dermatology, Second Xiangya Hospital, Central South University, Changsha 410011, PR China; Center of Research Excellence in Renewable Energy and Power Systems, Center of Excellence in Desalination Technology, Department of Mechanical Engineering, Faculty of Engineering-Rabigh, King Abdulaziz University, Jeddah 21589, Saudi Arabia.
² Department of Dermatology, Second Xiangya Hospital, Central South University, Changsha 410011, PR China.
³ Center of Research Excellence in Renewable Energy and Power Systems, Center of Excellence in Desalination Technology, Department of Mechanical Engineering, Faculty of Engineering-Rabigh, King Abdulaziz University, Jeddah 21589, Saudi Arabia.
⁴ College of Environmental Science and Engineering and Key Laboratory of Environmental Biology and Pollution Control (Ministry of Education), Hunan University, Changsha 410082, PR China.
⁵ College of Environmental Science and Engineering and Key Laboratory of Environmental Biology and Pollution Control (Ministry of Education), Hunan University, Changsha 410082, PR China; Department of Dermatology, Second Xiangya Hospital, Central South University, Changsha 410011, PR China; Center of Research Excellence in Renewable Energy and Power Systems, Center of Excellence in Desalination Technology, Department of Mechanical Engineering, Faculty of Engineering-Rabigh, King Abdulaziz University, Jeddah 21589, Saudi Arabia. Electronic address: zgming@hnu.edu.cn.
⁶ College of Environmental Science and Engineering and Key Laboratory of Environmental Biology and Pollution Control (Ministry of Education), Hunan University, Changsha 410082, PR China; Department of Dermatology, Second Xiangya Hospital, Central South University, Changsha 410011, PR China; Center of Research Excellence in Renewable Energy and Power Systems, Center of Excellence in Desalination Technology, Department of Mechanical Engineering, Faculty of Engineering-Rabigh, King Abdulaziz University, Jeddah 21589, Saudi Arabia. Electronic address: jilaigong@hnu.edu.cn.

PMID: 35074575
DOI: 10.1016/j.watres.2022.118048

Abstract

Proper treatment of wastewater is one of the key issues to the sustainable development of human society, and people have been searching for high-efficiency and low-cost methods for wastewater treatment. This article reviews recent studies about pyrite-mediated advanced oxidation processes (AOPs) in removing refractory organics from wastewater. The basic information of pyrite and its characteristics for AOPs are first introduced. Then, the performance and mechanisms of pyrite-mediated Fenton oxidation, electro-Fenton oxidation, and persulfate oxidation processes are carefully reviewed and presented. Natural pyrite is an abundant low-cost heterogeneous catalyst for AOPs, and the slow release of Fe²⁺ and the self-regulation of solution pH are highlighted characteristics of pyrite-mediated AOPs. In AOPs, the interaction between Fe³⁺ and pyrite facilitates the Fe²⁺ regeneration and the Fe²⁺/Fe³⁺ cycle. Making pyrite into nanoparticles, assisting by ultrasound and light irradiation, and adding exogenous Fe³⁺, organic chelating agents, or biochar is effective to enhance the performance of pyrite-mediated AOPs. Based on the analyses of those pyrite-mediated AOPs and their enhancing strategies, the future development directions are proposed in the aspects of toxicity research, mechanism research, and technological coupling.

Keywords: Advanced oxidation process; Organic wastewater; Pyrite; Water treatment.

Publication types

Review

MeSH terms

Humans
Hydrogen Peroxide
Iron
Oxidation-Reduction
Sulfides
Water Pollutants, Chemical* / analysis
Water Purification*

Substances

Sulfides
Water Pollutants, Chemical
pyrite
Hydrogen Peroxide
Iron