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学者姓名:浦娴娟
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With the continuous advancement of society, an increasing number of emerging pollutants are being identified in the environment. A substantial body of literature indicates that these emerging pollutants can form composite pollutants, which exhibit heightened toxicity and pose challenges for removal. However, research on the mechanisms and removal methodologies for these composite pollutants remains limited. In this study, ciprofloxacin, a representative antibiotic, was selected to investigate the effects of environmental factors on its degradation via electron beam irradiation. This study explores the composite mechanisms and interactions between ciprofloxacin, microplastics, and heavy metals, elucidating the removal processes and mechanisms of emerging composite pollutants through electron beam/oxidant systems. The findings demonstrate that electron beam treatment can effectively degrade ciprofloxacin, achieving removal efficiencies approaching 100 %, with degradation kinetics following a pseudo-first-order model. The introduction of oxidants further enhances the removal efficiency of ciprofloxacin, while environmental factors exert only minimal inhibitory effects on its degradation. The study reveals that the presence of nitrogen, oxygen, and fluorine atoms in ciprofloxacin facilitates the formation of composite pollutants with microplastics and heavy metals through electrostatic interactions, hydrogen bonding, and weak interactions. Furthermore, the electron beam not only effectively removes ciprofloxacin but also promotes the aging of microplastics and the reduction of heavy metals, presenting a novel approach for the remediation of emerging composite pollutants.
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Composite mechanisms Composite mechanisms Composite pollutants Composite pollutants Degradation mechanisms Degradation mechanisms Electron beam/oxidant systems Electron beam/oxidant systems Emerging pollutants Emerging pollutants
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GB/T 7714 | Yuan, Shanning , Chen, Lei , Liang, Huanhuan et al. Effective removal of composite emerging composite pollutants by irradiation: Composite process, composite mechanism and removal process [J]. | JOURNAL OF WATER PROCESS ENGINEERING , 2025 , 72 . |
MLA | Yuan, Shanning et al. "Effective removal of composite emerging composite pollutants by irradiation: Composite process, composite mechanism and removal process" . | JOURNAL OF WATER PROCESS ENGINEERING 72 (2025) . |
APA | Yuan, Shanning , Chen, Lei , Liang, Huanhuan , Yu, Fang , Jian, Weixiong , Pu, Xianjuan et al. Effective removal of composite emerging composite pollutants by irradiation: Composite process, composite mechanism and removal process . | JOURNAL OF WATER PROCESS ENGINEERING , 2025 , 72 . |
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Novel catalytic silicon carbide membrane filters (SCMFs) are synthesized with Co/Al-layered double hydroxide (Co/Al-LDH)-coated silicon carbide powder. After capsuled in a self-designed membrane shell, the SCMFs are utilized in activating persulphate for aniline degradation. Thermal analysis conducted via TG/DTG/DSC examination shows that the heating treatment is beneficial in elevating the activating ability of SCMFs, and the derived Co3O4 displays superior catalytical efficiency than Co/Al-LDHs precursor. The XRD patterns and SEM images indicate the sheet-like Co/Al-LDHs are uniformly coprecipitated throughout the surface of SCMFs. Within 20 min, around 95% of aniline is eliminated under 0.7 m of flow velocity and 8:1 of persulphate to aniline ratio. Three-dimensional fluorescence and GC chromatography reveal that distinct by-products exist in the early stage of the aniline degradation process between the sintered and non-sintered Co/Al-LDH-coated SCMFs. The integration strategy of Co/Al-LDH coatings and heating treatment endows traditional SCMFs with robust catalytic properties for engineering-oriented applications in wastewater treatment.
Keyword :
aniline degradation aniline degradation Co/Al-LDHs Co/Al-LDHs long-term evaluation long-term evaluation persulphate activation persulphate activation silicon carbide silicon carbide
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GB/T 7714 | Zhang, Yunfei , Shen, Hongmei , Zheng, Wenzheng et al. Co/Al-Layered Double Hydroxide-Modified Silicon Carbide Membrane Filters as Persulphate Activator for Aniline Degradation [J]. | WATER , 2025 , 17 (3) . |
MLA | Zhang, Yunfei et al. "Co/Al-Layered Double Hydroxide-Modified Silicon Carbide Membrane Filters as Persulphate Activator for Aniline Degradation" . | WATER 17 . 3 (2025) . |
APA | Zhang, Yunfei , Shen, Hongmei , Zheng, Wenzheng , Wu, Tong , Pu, Xianjuan , Zhou, Diwen et al. Co/Al-Layered Double Hydroxide-Modified Silicon Carbide Membrane Filters as Persulphate Activator for Aniline Degradation . | WATER , 2025 , 17 (3) . |
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With the increasing severity of the plastic pollution issue, biodegradable plastics are considered a critical approach to addressing plastic pollution. However, the aging process of biodegradable plastics and the resulting microplastics adsorption of pollutants in the environment are not clearly understood. This study investigated the physicochemical property changes of different microplastics (Biodegradable microplastics and nonbiodegradable microplastics) during aging, examined the adsorption processes and mechanisms of biodegradable plastics and non-degradable plastics towards typical pollutants in the environment, and elucidated the different aging mechanisms and adsorption mechanisms of biodegradable plastics and non-biodegradable plastics. The experimental results indicated that compared to non-biodegradable microplastics, biodegradable microplastics are more prone to aging in the environment, forming smaller microplastic particles and easier adsorption of environmental pollutants. Biodegradable microplastics have abundant oxygen-containing functional groups on the surface, which enhance age biodegradable microplastics adsorption capacity for pollutants through electrostatic interactions, chelation, and hydrogen bonding. The experimental results show that a strong oxidation system has unique advantages in the aging removal of biodegradable microplastics and can effectively reduce the adsorption equilibrium capacity of biodegradable microplastics. This research contributes to a deeper understanding of biodegradable microplastics' aging and adsorption behaviors in the environment, highlighting their significant role as carriers of pollutants.
Keyword :
Adsorption mechanism Adsorption mechanism Biodegradable microplastics Biodegradable microplastics Novel aging process Novel aging process Oxygen-containing functional groups Oxygen-containing functional groups
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GB/T 7714 | Chen, Lei , Mao, Chengkai , Yuan, Shanning et al. Comparison of aging behavior and adsorption processes of biodegradable and conventional microplastics [J]. | CHEMICAL ENGINEERING JOURNAL , 2024 , 502 . |
MLA | Chen, Lei et al. "Comparison of aging behavior and adsorption processes of biodegradable and conventional microplastics" . | CHEMICAL ENGINEERING JOURNAL 502 (2024) . |
APA | Chen, Lei , Mao, Chengkai , Yuan, Shanning , Pu, Xianjuan , Liang, Huanhuan , Chen, Xiangyu et al. Comparison of aging behavior and adsorption processes of biodegradable and conventional microplastics . | CHEMICAL ENGINEERING JOURNAL , 2024 , 502 . |
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