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Liu X, Zhang L, Zhang Q, Li M, Zhao Z, Lin B, Peng J, Shen H, He Q. Fenton-like system of UV/Glucose-oxidase@Kaolin coupled with organic green rust: UV-enhanced enzyme activity and the mechanism of UV synergistic degradation of photosensitive pollutants. Environ Res 2024; 247:118257. [PMID: 38262511 DOI: 10.1016/j.envres.2024.118257] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/25/2023] [Revised: 01/10/2024] [Accepted: 01/17/2024] [Indexed: 01/25/2024]
Abstract
This study introduces the UV/glucose-oxidase@Kaolin (GOD@Kaolin) coupled organic green rust (OGR) system (UV/OGR/GOD@Kaolin) to investigate the promotion of glucose oxidase activity by UV light and its synergistic degradation mechanism for photosensitive pollutants, specifically targeting the efficient degradation of 4-chlorophenol (4-CP). The enzyme system demonstrates its ability to overcome drawbacks associated with traditional Fenton systems, including a narrow pH range and high localized concentration of H2O2, by gradually releasing hydrogen peroxide in situ within a neutral environment. In the presence of UV radiation under specific conditions, enhanced enzyme activity is observed, resulting in increased efficiency in pollutant removal. The gradual release of hydrogen peroxide plays a crucial role in preventing unwanted reactions among active substances. These unique features facilitate the generation of highly reactive species, such as Fe(IV)O, •OH, and •O2-, tailored to efficiently target the organic components of interest. Additionally, the system establishes a positive iron cycle, ensuring a sustained reactive capability throughout the degradation process. The results highlight the UV/OGR/GOD@Kaolin system as an effective and environmentally friendly approach for the degradation of 4-CP, and the resilience of the enzyme extends the system's applicability to a broader range of scenarios.
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Affiliation(s)
- Xiangyu Liu
- School of Civil Engineering & Architecture, Wuhan University of Technology, 122 Luoshi Road, Wuhan, 430070, China
| | - Lei Zhang
- MWR Standard & Quality Control Research Institute, Hangzhou, 310024, China
| | - Qian Zhang
- School of Civil Engineering & Architecture, Wuhan University of Technology, 122 Luoshi Road, Wuhan, 430070, China; Shenzhen Research Institute of Wuhan University of Technology, Shenzhen, 518000, China.
| | - Meng Li
- School of Civil Engineering & Architecture, Wuhan University of Technology, 122 Luoshi Road, Wuhan, 430070, China; Shenzhen Research Institute of Wuhan University of Technology, Shenzhen, 518000, China
| | - Ziqi Zhao
- Wuhan HUADET Environmental Protection Engineering & Technology, Wuhan, 430080, China
| | - Bing Lin
- School of Civil Engineering & Architecture, Wuhan University of Technology, 122 Luoshi Road, Wuhan, 430070, China
| | - Jie Peng
- School of Civil Engineering & Architecture, Wuhan University of Technology, 122 Luoshi Road, Wuhan, 430070, China
| | - Haonan Shen
- School of Civil Engineering & Architecture, Wuhan University of Technology, 122 Luoshi Road, Wuhan, 430070, China
| | - Qi He
- School of Civil Engineering & Architecture, Wuhan University of Technology, 122 Luoshi Road, Wuhan, 430070, China
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