Enhanced Ciprofloxacin Ozonation Degradation by an Aqueous Zn-Cu-Ni Composite Silicate: Degradation Performance and Surface Mechanism
This study investigates the environmental significance of ciprofloxacin as an emerging contaminant and the need for effective degradation methods. The chemical coprecipitation method was used in this study to prepare the Zn-Cu-Ni composite silicate, serving as a heterogeneous ozonation catalyst. The...
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2025-01-01
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| author | Yue Liu Rong Guo Jie Li Yizhen Cheng Congmin Wang Weiqiang Wang Huifan Zheng |
| author_facet | Yue Liu Rong Guo Jie Li Yizhen Cheng Congmin Wang Weiqiang Wang Huifan Zheng |
| author_sort | Yue Liu |
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| description | This study investigates the environmental significance of ciprofloxacin as an emerging contaminant and the need for effective degradation methods. The chemical coprecipitation method was used in this study to prepare the Zn-Cu-Ni composite silicate, serving as a heterogeneous ozonation catalyst. The catalytic activity was then evaluated by degrading ciprofloxacin (CIP). Scanning electron microscopy, X-ray diffraction, X-ray photoelectron spectroscopy, nitrogen adsorption–desorption, and Fourier transform infrared analysis (FTIR) were used to characterize the Zn-Cu-Ni composite silicate. The catalyst had a high surface area (308.137 m<sup>2</sup>/g), no regular morphology, and a particle size of 7.6 µm and contained Si-O-Si, Ni-O-Si, and Zn-O-Si. The results showed that the CIP degradation and mineralization rates (pH 7.0, CIP 3.0 mg/L, Ozone 1.5 mg/L) were significantly enhanced in the presence of the Zn-Cu-Ni composite silicate. The CIP and total organic carbon (TOC) removal rates were increased by 51.09% and 18.72%, respectively, under optimal conditions, compared with ozonation alone. The adsorption of Zn-Cu-Ni composite silicate, ozone oxidation, and ·OH oxidation synergistically promoted the efficient removal of CIP. This study provides valuable catalytic ozone technology for degradation of antibiotics in wastewater to reduce environmental pollution with potential practical applications. |
| format | Article |
| id | doaj-art-1fe4c5881e1244528578339fda099312 |
| institution | Kabale University |
| issn | 2297-8739 |
| language | English |
| publishDate | 2025-01-01 |
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| spelling | doaj-art-1fe4c5881e1244528578339fda0993122025-01-24T13:49:32ZengMDPI AGSeparations2297-87392025-01-011211510.3390/separations12010015Enhanced Ciprofloxacin Ozonation Degradation by an Aqueous Zn-Cu-Ni Composite Silicate: Degradation Performance and Surface MechanismYue Liu0Rong Guo1Jie Li2Yizhen Cheng3Congmin Wang4Weiqiang Wang5Huifan Zheng6School of Smart Energy and Environment, Zhongyuan University of Technology, Zhengzhou 451191, ChinaJiangsu Kejia Design Group Co., Ltd., Wuxi 214000, ChinaSchool of Smart Energy and Environment, Zhongyuan University of Technology, Zhengzhou 451191, ChinaDepartment of Environmental Science and Engineering, Fuzhou University, Fuzhou 350108, ChinaSchool of Smart Energy and Environment, Zhongyuan University of Technology, Zhengzhou 451191, ChinaSchool of Smart Energy and Environment, Zhongyuan University of Technology, Zhengzhou 451191, ChinaSchool of Smart Energy and Environment, Zhongyuan University of Technology, Zhengzhou 451191, ChinaThis study investigates the environmental significance of ciprofloxacin as an emerging contaminant and the need for effective degradation methods. The chemical coprecipitation method was used in this study to prepare the Zn-Cu-Ni composite silicate, serving as a heterogeneous ozonation catalyst. The catalytic activity was then evaluated by degrading ciprofloxacin (CIP). Scanning electron microscopy, X-ray diffraction, X-ray photoelectron spectroscopy, nitrogen adsorption–desorption, and Fourier transform infrared analysis (FTIR) were used to characterize the Zn-Cu-Ni composite silicate. The catalyst had a high surface area (308.137 m<sup>2</sup>/g), no regular morphology, and a particle size of 7.6 µm and contained Si-O-Si, Ni-O-Si, and Zn-O-Si. The results showed that the CIP degradation and mineralization rates (pH 7.0, CIP 3.0 mg/L, Ozone 1.5 mg/L) were significantly enhanced in the presence of the Zn-Cu-Ni composite silicate. The CIP and total organic carbon (TOC) removal rates were increased by 51.09% and 18.72%, respectively, under optimal conditions, compared with ozonation alone. The adsorption of Zn-Cu-Ni composite silicate, ozone oxidation, and ·OH oxidation synergistically promoted the efficient removal of CIP. This study provides valuable catalytic ozone technology for degradation of antibiotics in wastewater to reduce environmental pollution with potential practical applications.https://www.mdpi.com/2297-8739/12/1/15Zn-Cu-Ni composite silicatechemical coprecipitation methodheterogeneous catalytic ozonationciprofloxacin degradationreactive oxygen species |
| spellingShingle | Yue Liu Rong Guo Jie Li Yizhen Cheng Congmin Wang Weiqiang Wang Huifan Zheng Enhanced Ciprofloxacin Ozonation Degradation by an Aqueous Zn-Cu-Ni Composite Silicate: Degradation Performance and Surface Mechanism Separations Zn-Cu-Ni composite silicate chemical coprecipitation method heterogeneous catalytic ozonation ciprofloxacin degradation reactive oxygen species |
| title | Enhanced Ciprofloxacin Ozonation Degradation by an Aqueous Zn-Cu-Ni Composite Silicate: Degradation Performance and Surface Mechanism |
| title_full | Enhanced Ciprofloxacin Ozonation Degradation by an Aqueous Zn-Cu-Ni Composite Silicate: Degradation Performance and Surface Mechanism |
| title_fullStr | Enhanced Ciprofloxacin Ozonation Degradation by an Aqueous Zn-Cu-Ni Composite Silicate: Degradation Performance and Surface Mechanism |
| title_full_unstemmed | Enhanced Ciprofloxacin Ozonation Degradation by an Aqueous Zn-Cu-Ni Composite Silicate: Degradation Performance and Surface Mechanism |
| title_short | Enhanced Ciprofloxacin Ozonation Degradation by an Aqueous Zn-Cu-Ni Composite Silicate: Degradation Performance and Surface Mechanism |
| title_sort | enhanced ciprofloxacin ozonation degradation by an aqueous zn cu ni composite silicate degradation performance and surface mechanism |
| topic | Zn-Cu-Ni composite silicate chemical coprecipitation method heterogeneous catalytic ozonation ciprofloxacin degradation reactive oxygen species |
| url | https://www.mdpi.com/2297-8739/12/1/15 |
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