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Hirani RAK, Wu H, Asif AH, Rafique N, Shi L, Zhang S, Wu Z, Zhang LC, Wang S, Yin Y, Saunders M, Sun H. Cobalt oxide functionalized ceramic membrane for 4-hydroxybenzoic acid degradation via peroxymonosulfate activation. JOURNAL OF HAZARDOUS MATERIALS 2023; 448:130874. [PMID: 36716559 DOI: 10.1016/j.jhazmat.2023.130874] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/26/2022] [Revised: 12/18/2022] [Accepted: 01/24/2023] [Indexed: 06/18/2023]
Abstract
Membrane separation and sulfate radicals-based advanced oxidation processes (SR-AOPs) can be combined as an efficient technique for the elimination of organic pollutants. The immobilization of metal oxide catalysts on ceramic membranes can enrich the membrane separation technology with catalytic oxidation avoiding recovering suspended catalysts. Herein, nanostructured Co3O4 ceramic catalytic membranes with different Co loadings were fabricated via a simple ball-milling and calcination process. Uniform distribution of Co3O4 nanoparticles in the membrane provided sufficient active sites for catalytic oxidation of 4-hydroxybenzoic acid (HBA). Mechanistic studies were conducted to determine the reactive radicals and showed that both SO4•- and •OH were present in the catalytic process while SO4•- plays the dominant role. The anti-fouling performance of the composite Co@Al2O3 membranes was also evaluated, showing that a great flux recovery was achieved with the addition of PMS for the fouling caused by humic acid (HA).
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Affiliation(s)
| | - Hong Wu
- School of Science, Edith Cowan University, 270 Joondalup Drive, Joondalup, WA 6027, Australia
| | - Abdul Hannan Asif
- School of Science, Edith Cowan University, 270 Joondalup Drive, Joondalup, WA 6027, Australia
| | - Nasir Rafique
- School of Science, Edith Cowan University, 270 Joondalup Drive, Joondalup, WA 6027, Australia
| | - Lei Shi
- College of Materials Science and Engineering, Nanjing Forestry University, 210037 Nanjing, China
| | - Shu Zhang
- College of Materials Science and Engineering, Nanjing Forestry University, 210037 Nanjing, China
| | - Zhentao Wu
- Aston Institute of Materials Research, School of Engineering and Applied Science, Aston University, B4 7ET Birmingham, UK
| | - Lai-Chang Zhang
- School of Engineering, Edith Cowan University, 270 Joondalup Drive, Joondalup, WA 6027, Australia
| | - Shaobin Wang
- School of Chemical Engineering and Advanced Materials, The University of Adelaide, Adelaide, SA 5005, Australia
| | - Yu Yin
- School of Environmental and Chemical Engineering, Jiangsu University of Science and Technology, Zhenjiang 212003, China
| | - Martin Saunders
- Centre for Microscopy, Characterisation and Analysis (CMCA), University of Western Australia, Perth, WA 6009, Australia
| | - Hongqi Sun
- School of Science, Edith Cowan University, 270 Joondalup Drive, Joondalup, WA 6027, Australia.
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