Novel catalysts with multivalence copper for organic pollutants removal from wastewater with excellent selectivity and stability in Fenton‐like process under neutral pH conditions

Journal Article · Mon Dec 05 00:00:00 EST 2022 · Water Environment Research

DOI:https://doi.org/10.1002/wer.10816· OSTI ID:1907003

Li, Haitao ^[1]; Liu, Xiang ^[2]; Chen, Xueli ^[3]; Chen, Yonglin ^[3]; Li, Yuping ^[4]; Motkuri, Radha Kishan ^[5]; Dai, Zhongde ^[6]; Kumar, Abhishek ^[5]; Fang, Tian ^[7]; Shen, Jian  ^[8]

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1. College of Environment and Resources Xiangtan University Xiangtan China, Jiangxi Provincial Key Laboratory of Low‐Carbon Solid Waste Recycling, School of Geography and Environmental Engineering Gannan Normal University Ganzhou China, Beijing Engineering Research Center of Process Pollution Control, Division of Environment Technology and Engineering, Key Laboratory of Green Process and Engineering Institute of Process Engineering, Chinese Academy of Sciences Beijing China
2. National Key Laboratory of Human Factors Engineering Chinese Astronaut Research and Training Center Beijing China
3. Jiangxi Provincial Key Laboratory of Low‐Carbon Solid Waste Recycling, School of Geography and Environmental Engineering Gannan Normal University Ganzhou China
4. Beijing Engineering Research Center of Process Pollution Control, Division of Environment Technology and Engineering, Key Laboratory of Green Process and Engineering Institute of Process Engineering, Chinese Academy of Sciences Beijing China
5. Energy and Environment Directorate Pacific Northwest National Laboratory Richland Washington USA
6. School of Carbon Neutrality Future Technology Sichuan University Chengdu China
7. Huatian Engineering and Technology Corporation, MCC Ma'anshan China
8. College of Environment and Resources Xiangtan University Xiangtan China

Abstract Fenton‐like reaction has been widely used for organics degradation. However, most Fenton‐like reaction works at low pH range (pH < 4) with uncontrollable selectivity of hydroxyl radicals from H ₂ O ₂ activation, and unsatisfied catalyst stability, which is compromised advanced oxidation performance for water/wastewater treatments. In this work, to solve the drawbacks, novel copper catalysts were fabricated via hydrogen reduction/calcination of Cu ²⁺ ‐supported Al/MCM‐41 with precisely controllable copper valence state. Compared with catalysts with monovalence copper (i.e., CuO, Cu, and Cu ²⁺ ), the obtained catalysts with multivalence copper present higher selectivity, excellent stability towards •OH radical pathways, and outperformance in p CBA degradation efficiency at neutral state. In addition, the fabricated catalysts also exhibited excellent phenol removal efficiency (75.5%) and H ₂ O ₂ utilization efficiency (47.9%) within neutral environment. Moreover, the degradation efficiency of phenol approaches to 100% within only 2 h. The catalyst also shows good stability for organic pollutants removal, which shows good potential in catalytic oxidation for phenolic compounds‐containing wastewater in Fenton‐like reaction, especially under neutral pH conditions. Practitioner Points Multivalence copper presents great potentials for organic compounds removal at neutral condition. Multivalence copper shows higher selectivity toward •OH and good stability at neutral condition. Multivalence copper exhibiters outperformed phenol removal efficiency at neutral condition.

• Sponsoring Organization: USDOE
• Grant/Contract Number: DE‐AC05‐76RL01830
• OSTI ID: 1907003
• Journal Information: Water Environment Research, Journal Name: Water Environment Research Vol. 94 Journal Issue: 12; ISSN 1061-4303
• Publisher: Wiley Blackwell (John Wiley & Sons)
• Country of Publication: United States
• Language: English