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Chang H, Xu G, Huang X, Xu W, Luo F, Zang J, Lin X, Huang R, Yu H, Yu B. Photocatalytic Degradation of Quinolones by Magnetic MOFs Materials and Mechanism Study. Molecules 2024; 29:2294. [PMID: 38792155 PMCID: PMC11123774 DOI: 10.3390/molecules29102294] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2024] [Revised: 05/10/2024] [Accepted: 05/10/2024] [Indexed: 05/26/2024] Open
Abstract
With the rising incidence of various diseases in China and the constant development of the pharmaceutical industry, there is a growing demand for floxacin-type antibiotics. Due to the large-scale production and high cost of waste treatment, the parent drug and its metabolites constantly enter the water environment through domestic sewage, production wastewater, and other pathways. In recent years, the pollution of the aquatic environment by floxacin has become increasingly serious, making the technology to degrade floxacin in the aquatic environment a research hotspot in the field of environmental science. Metal-organic frameworks (MOFs), as a new type of porous material, have attracted much attention in recent years. In this paper, four photocatalytic materials, MIL-53(Fe), NH2-MIL-53(Fe), MIL-100(Fe), and g-C3N4, were synthesised and applied to the study of the removal of ofloxacin and enrofloxacin. Among them, the MIL-100(Fe) material exhibited the best photocatalytic effect. The degradation efficiency of ofloxacin reached 95.1% after 3 h under visible light, while enrofloxacin was basically completely degraded. The effects of different materials on the visible photocatalytic degradation of the floxacin were investigated. Furthermore, the photocatalytic mechanism of enrofloxacin and ofloxacin was revealed by the use of three trappers (▪O2-, h+, and ▪OH), demonstrating that the role of ▪O2- promoted the degradation effect of the materials under photocatalysis.
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Affiliation(s)
- Hongchao Chang
- School of Pharmaceutical and Chemical Engineering, Taizhou University, Taizhou 318000, China; (H.C.); (G.X.); (F.L.); (J.Z.); (X.L.); (R.H.)
| | - Guangyao Xu
- School of Pharmaceutical and Chemical Engineering, Taizhou University, Taizhou 318000, China; (H.C.); (G.X.); (F.L.); (J.Z.); (X.L.); (R.H.)
| | - Xiantong Huang
- Ecological Environment Testing Centre, Zaozhuang 277300, China;
| | - Wei Xu
- Zhejiang Baima Lake Laboratory Co., Ltd., Hangzhou 310053, China;
| | - Fujuan Luo
- School of Pharmaceutical and Chemical Engineering, Taizhou University, Taizhou 318000, China; (H.C.); (G.X.); (F.L.); (J.Z.); (X.L.); (R.H.)
| | - Jiarong Zang
- School of Pharmaceutical and Chemical Engineering, Taizhou University, Taizhou 318000, China; (H.C.); (G.X.); (F.L.); (J.Z.); (X.L.); (R.H.)
| | - Xiaowei Lin
- School of Pharmaceutical and Chemical Engineering, Taizhou University, Taizhou 318000, China; (H.C.); (G.X.); (F.L.); (J.Z.); (X.L.); (R.H.)
| | - Rong Huang
- School of Pharmaceutical and Chemical Engineering, Taizhou University, Taizhou 318000, China; (H.C.); (G.X.); (F.L.); (J.Z.); (X.L.); (R.H.)
| | - Hua Yu
- School of Pharmaceutical and Chemical Engineering, Taizhou University, Taizhou 318000, China; (H.C.); (G.X.); (F.L.); (J.Z.); (X.L.); (R.H.)
- Taizhou Biomedical and Chemistry Industry Institute, Taizhou 318000, China
| | - Binbin Yu
- School of Pharmaceutical and Chemical Engineering, Taizhou University, Taizhou 318000, China; (H.C.); (G.X.); (F.L.); (J.Z.); (X.L.); (R.H.)
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Liu F, Zou Y, Liang H, Hu J, Li Y, Lin L, Li X, Li B. Trace Co(II) triggers peracetic acid activation in phosphate buffer: New insights into the oxidative species responsible for ciprofloxacin removal. JOURNAL OF HAZARDOUS MATERIALS 2024; 467:133638. [PMID: 38354441 DOI: 10.1016/j.jhazmat.2024.133638] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/12/2023] [Revised: 01/10/2024] [Accepted: 01/25/2024] [Indexed: 02/16/2024]
Abstract
Peracetic acid (PAA) emerges as a promising disinfectant and oxidant applied worldwide, and its application has been broadened for advanced oxidation processes (AOPs) in wastewater treatment. Current studies on transition metal-activated AOPs utilized relatively high concentrations of catalysts, leading to potential secondary pollution concerns. This study boosts the understanding of reaction mechanism in PAA activation system under a low-level concentration. Herein, trace levels of Co(II) (1 μM) and practical dosages of PAA (50-250 μM) were employed, achieving noticeable ciprofloxacin (CIP) degradation efficiencies (75.8-99.0%) within 20 min. Two orders of magnitude of the CIP's antibacterial activity significantly decreased after Co(II)/PAA AOP treatment, which suggested the effective ecological risk control capability of the reaction system. The degradation performed well in various water matrices and the primary reactive species is proposed to be CoHPO4-OO(O)CCH3 complexes with scavenging tests and electron paramagnetic resonance tests. The degradation pathway of fluoroquinolones including piperazine ring-opening (dealkylation and oxidation), defluorination, and decarboxylation, were systematically elucidated. This study boosts a comprehensive and novel understanding of PAA-based AOP for CIP degradation.
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Affiliation(s)
- Feifei Liu
- Guangdong Provincial Engineering Research Center for Urban Water Recycling and Environmental Safety, Tsinghua Shenzhen International Graduate School, Tsinghua University, Shenzhen 518055, China; School of Environment, Tsinghua University, Beijing 100084, China
| | - Yubin Zou
- Guangdong Provincial Engineering Research Center for Urban Water Recycling and Environmental Safety, Tsinghua Shenzhen International Graduate School, Tsinghua University, Shenzhen 518055, China; School of Environment, Tsinghua University, Beijing 100084, China; Shenzhen Environmental Science and New Energy Laboratory, Tsinghua-Berkeley Shenzhen Institute, Tsinghua University, Shenzhen 518055, China
| | - Hebin Liang
- Guangdong Provincial Engineering Research Center for Urban Water Recycling and Environmental Safety, Tsinghua Shenzhen International Graduate School, Tsinghua University, Shenzhen 518055, China
| | - Jiahui Hu
- Guangdong Provincial Engineering Research Center for Urban Water Recycling and Environmental Safety, Tsinghua Shenzhen International Graduate School, Tsinghua University, Shenzhen 518055, China; School of Environment, Tsinghua University, Beijing 100084, China
| | - Yin Li
- Guangdong Provincial Engineering Research Center for Urban Water Recycling and Environmental Safety, Tsinghua Shenzhen International Graduate School, Tsinghua University, Shenzhen 518055, China; School of Environment, Tsinghua University, Beijing 100084, China
| | - Lin Lin
- Guangdong Provincial Engineering Research Center for Urban Water Recycling and Environmental Safety, Tsinghua Shenzhen International Graduate School, Tsinghua University, Shenzhen 518055, China
| | - Xiaoyan Li
- Guangdong Provincial Engineering Research Center for Urban Water Recycling and Environmental Safety, Tsinghua Shenzhen International Graduate School, Tsinghua University, Shenzhen 518055, China; Shenzhen Environmental Science and New Energy Laboratory, Tsinghua-Berkeley Shenzhen Institute, Tsinghua University, Shenzhen 518055, China
| | - Bing Li
- Guangdong Provincial Engineering Research Center for Urban Water Recycling and Environmental Safety, Tsinghua Shenzhen International Graduate School, Tsinghua University, Shenzhen 518055, China.
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Zheng C, Wu Q, Hu X, Ma J, Sun K, Sun Y, Xu B. Macro-manufacturing robust and stable metal-organic framework beads for antibiotics removal from wastewater. ENVIRONMENTAL RESEARCH 2024; 246:118564. [PMID: 38417658 DOI: 10.1016/j.envres.2024.118564] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/20/2023] [Revised: 02/05/2024] [Accepted: 02/25/2024] [Indexed: 03/01/2024]
Abstract
Metal-organic frameworks (MOFs) have shown great prospects in wastewater remediation. However, the easy aggregation, difficult separation and inferior reusability greatly limit their large-scale application. Herein, we proposed a facile, green and low-cost strategy to construct robust and stable MOF-based hydrogel beads (Fe-BTC-HBs) in a gram scale, and employed them to remove antibiotics from wastewater. As a result, the Fe-BTC-HBs demonstrated outstanding adsorption capacity for both ofloxacin (OFL) and tetracycline (TC) (281.17 mg/g for OFL and 223.60 mg/g for TC) under a near-neutral environment. The main adsorption mechanisms of OFL and TC were hydrogen bonding and π-π stacking interaction. Owing to its macroscopic granule and stable structure, Fe-BTC-HBs can be separated rapidly from wastewater after capturing antibiotics, and more than 85% adsorption capacity still remained after six cycles, while the powdered Fe-BTC only showed less than 6% recovery efficiency with massive weight loss (around 92%). In real industrial effluent, the adsorption performance of Fe-BTC-HBs toward two antibiotics exhibited negligible decreases (2.9% for OFL and 2.2% for TC) compared with that in corresponding solutions. Furthermore, Fe-BTC-HBs also had appealing economic and environmental benefit. Overall, the macro-manufactured MOF beads have the promising potential for the large-scale wastewater treatment.
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Affiliation(s)
- Chaofan Zheng
- College of Urban Construction, Nanjing Tech University, Nanjing, 211816, China.
| | - Qu Wu
- College of Urban Construction, Nanjing Tech University, Nanjing, 211816, China
| | - Xiaojing Hu
- College of Urban Construction, Nanjing Tech University, Nanjing, 211816, China
| | - Jingxuan Ma
- College of Urban Construction, Nanjing Tech University, Nanjing, 211816, China
| | - Kuiyuan Sun
- College of Urban Construction, Nanjing Tech University, Nanjing, 211816, China
| | - Yongjun Sun
- College of Urban Construction, Nanjing Tech University, Nanjing, 211816, China
| | - Bincheng Xu
- State Key Laboratory of Pollution Control and Resources Reuse, College of Environmental Science and Engineering, Tongji University, Shanghai, 200092, China.
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Li Y, Han D, Wang Z, Gu F. Double-Solvent-Induced Derivatization of Bi-MOF to Vacancy-Rich Bi 4O 5Br 2: Toward Efficient Photocatalytic Degradation of Ciprofloxacin in Water and HCHO Gas. ACS APPLIED MATERIALS & INTERFACES 2024; 16:7080-7096. [PMID: 38293772 DOI: 10.1021/acsami.3c15898] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/01/2024]
Abstract
MOF-derived photocatalytic materials have potential in degrading ciprofloxacin (CIP) in water and HCHO gas pollutants. Novel derivatization means and defect regulation are effective techniques for improving the performance of MOF-derived photocatalysis. Vacancy-rich Bi4O5Br2 (MBO-x) were derived in one step from Bi-MOF (CAU-17) by a modified double-solvent method. MBO-50 produced more oxygen vacancies due to the combined effect of the CAU-17 precursor and double solvents. The photocatalytic performance of MBO was evaluated by degrading CIP and HCHO. Thanks to the favorable morphology and vacancy structure, MBO-50 demonstrated the best photocatalytic efficiency, with 97.0% removal of CIP (20 mg L-1) and 90.1% removal of HCHO (6.5 ppm) at 60 min of light irradiation. The EIS Nyquist measurement, transient photocurrent response, photoluminescence spectra, and the calculation of energy band information indicated that the vacancy sites can effectively capture photoexcited electrons during the charge transfer process, thus limiting the recombination of electrons and holes, improving the energy band structure, and making it easier to produce superoxide anion radical (·O2-) and to degrade CIP and HCHO. The improvement of photocatalytic performance of MBO-50 in HCHO degradation due to the bromine vacancy generation and filling mechanism was discussed in detail. This work provides a promising new idea for the modulation of MOF-derived photocatalytic materials.
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Affiliation(s)
- Yansheng Li
- State Key Laboratory of Chemical Resource Engineering, Beijing University of Chemical Technology, Beijing 100029, China
| | - Dongmei Han
- State Key Laboratory of Chemical Resource Engineering, Beijing University of Chemical Technology, Beijing 100029, China
| | - Zhihua Wang
- State Key Laboratory of Chemical Resource Engineering, Beijing University of Chemical Technology, Beijing 100029, China
| | - Fubo Gu
- State Key Laboratory of Chemical Resource Engineering, Beijing University of Chemical Technology, Beijing 100029, China
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Georgin J, Franco DSP, Meili L, Bonilla-Petriciolet A, Kurniawan TA, Imanova G, Demir E, Ali I. Environmental remediation of the norfloxacin in water by adsorption: Advances, current status and prospects. Adv Colloid Interface Sci 2024; 324:103096. [PMID: 38309035 DOI: 10.1016/j.cis.2024.103096] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/20/2023] [Revised: 01/13/2024] [Accepted: 01/28/2024] [Indexed: 02/05/2024]
Abstract
Antibiotics are considered as the new generation water pollutants as these disturb endocrine systems if water contaminated with antibiotics is consumed. Among many antibiotics norfloxacin is present in various natural water bodies globally. This antibiotic is considered an emerging pollutant due to its low degradation in aquatic animals. Besides, it has many side effects on human vital organs. Therefore, the present article discusses the recent advances in the removal of norfloxacin by adsorption. This article describes the presence of norfloxacin in natural water, consumption, toxicity, various adsorbents for norfloxacin removal, optimization factors for norfloxacin removal, kinetics, thermodynamics, modeling, adsorption mechanism and regeneration of the adsorbents. Adsorption takes place in a monolayer following the Langmuir model. The Pseudo-second order model represents the kinetic data. The adsorption capacity ranged from 0.924 to 1282 mg g-1. In this sense, the parameters such as the NFX concentration added to the adsorbent textural properties exerted a great influence. Besides, the fixed bed-based removal at a large scale is also included. In addition to this, the simulation studies were also discussed to describe the adsorption mechanism. Finally, the research challenges and future perspectives have also been highlighted. This article will be highly useful for academicians, researchers, industry persons, and government authorities for designing future advanced experiments.
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Affiliation(s)
- Jordana Georgin
- Department of Civil and Environmental, Universidad de la Costa, CUC, Calle 58 # 55-66, Barranquilla, Atlántico, Colombia; Instituto Tecnológico de Aguascalientes, Aguascalientes 20256, Mexico
| | - Dison Stracke Pfingsten Franco
- Department of Civil and Environmental, Universidad de la Costa, CUC, Calle 58 # 55-66, Barranquilla, Atlántico, Colombia.
| | - Lucas Meili
- Laboratory of Processes, Center of Technology, Federal University of Alagoas, Maceió 57072-900, AL, Brazil
| | | | | | - Gunel Imanova
- Institute of Radiation Problems, Ministry of Science and Education Republic of Azerbaijan, 9 B. Vahabzade str., Baku AZ1143, Azerbaijan; UNEC Research Center for Sustainable Development and Green Economy named after Nizami Ganjavi, Azerbaijan State University of Economics (UNEC), 6 Istiglaliyyat Str., Baku 1001, Azerbaijan; Department of Physics and Electronics, Khazar University, 41 Mahsati Str., Baku AZ1096, Azerbaijan
| | - Ersin Demir
- Afyonkarahisar Health Sciences University, Faculty of Pharmacy, Department of Analytical Chemistry, Afyonkarahisar 03030, Turkey
| | - Imran Ali
- Department of Chemistry, Jamia Millia Islamia, New Delhi, India.
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González-Rodríguez J, Conde JJ, Vargas-Osorio Z, Vázquez-Vázquez C, Piñeiro Y, Rivas J, Feijoo G, Moreira MT. LED-driven photo-Fenton process for micropollutant removal by nanostructured magnetite anchored in mesoporous silica. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2024; 349:119461. [PMID: 37922820 DOI: 10.1016/j.jenvman.2023.119461] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/20/2023] [Revised: 10/20/2023] [Accepted: 10/21/2023] [Indexed: 11/07/2023]
Abstract
The presence of organic micropollutants in water bodies represents a threat to living organisms and ecosystems due to their toxicological effects and recalcitrance in conventional wastewater treatments. In this context, the application of heterogeneous photo-Fenton based on magnetite nanoparticles supported on mesoporous silica (SBA15) is proposed to carry out the non-specific degradation of the model compounds ibuprofen, carbamazepine, hormones, bisphenol A and the dye ProcionRed®. The operating conditions (i.e., pH, catalyst load and hydrogen peroxide concentration) were optimized by Response Surface Methodology (RSM). The paramagnetic properties of the nanocatalysts allowed their repeated use in sequential batch operations with catalyst losses below 1%. The feasibility of the process was demonstrated as removal rates above 90% after twelve accomplished after twelve consecutive cycles. In addition, the contributions of different reactive oxygen species, mainly •OH, were analyzed together with the formation of by-products, achieving total mineralization values of 15% on average.
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Affiliation(s)
- J González-Rodríguez
- CRETUS, Department of Chemical Engineering, Universidade de Santiago de Compostela, 15782, Santiago de Compostela, Spain.
| | - J J Conde
- CRETUS, Department of Chemical Engineering, Universidade de Santiago de Compostela, 15782, Santiago de Compostela, Spain
| | - Z Vargas-Osorio
- Department of Biomaterials, Centre for Functional and Surface Functionalized Glass (FUNGLASS), Alexander Dubcek University of Trencin, Slovakia; Laboratory of Magnetism and Nanotechnology, Department of Physical Chemistry, Faculty of Chemistry, and Applied Physics, Universidade de Santiago de Compostela, 15782, Santiago de Compostela, Spain
| | - C Vázquez-Vázquez
- Laboratory of Magnetism and Nanotechnology, Department of Physical Chemistry, Faculty of Chemistry, and Applied Physics, Universidade de Santiago de Compostela, 15782, Santiago de Compostela, Spain
| | - Y Piñeiro
- Laboratory of Magnetism and Nanotechnology, Department of Physical Chemistry, Faculty of Chemistry, and Applied Physics, Universidade de Santiago de Compostela, 15782, Santiago de Compostela, Spain
| | - J Rivas
- Laboratory of Magnetism and Nanotechnology, Department of Physical Chemistry, Faculty of Chemistry, and Applied Physics, Universidade de Santiago de Compostela, 15782, Santiago de Compostela, Spain
| | - G Feijoo
- CRETUS, Department of Chemical Engineering, Universidade de Santiago de Compostela, 15782, Santiago de Compostela, Spain
| | - M T Moreira
- CRETUS, Department of Chemical Engineering, Universidade de Santiago de Compostela, 15782, Santiago de Compostela, Spain
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You X, Hou F, Xie T, Cai A, He H, Li G, Zhang F, Peng W, Fan X, Li Y. Fabrication of superhydrophilic porous carbon materials through a porogen-free method: Surface and structure modification promoting the two-electron oxygen reduction activity. J Colloid Interface Sci 2023; 639:333-342. [PMID: 36812850 DOI: 10.1016/j.jcis.2023.02.063] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2022] [Revised: 02/08/2023] [Accepted: 02/12/2023] [Indexed: 02/16/2023]
Abstract
HYPOTHESIS Electrochemical manufacture of H2O2 through the two-electron oxygen reduction reaction (2e- ORR), providing prospects of the distributed production of H2O2 in remote regions, is considered a promising alternative to the energy-intensive anthraquinone oxidation process. EXPERIMENTS In this study, one glucose-derived oxygen-enriched porous carbon material (labeled as HGC500) is developed through a porogen-free strategy integrating structural and active site modification. FINDINGS The superhydrophilic surface and porous structure together promote the mass transfer of reactants and accessibility of active sites in the aqueous reaction, while the abundant CO species (e.g., aldehyde groups) are taken for the main active site to facilitate the 2e- ORR catalytic process. Benefiting from the above merits, the obtained HGC500 possesses superior performance with a selectivity of 92 % and mass activity of 43.6 A gcat-1 at 0.65 V (vs. RHE). Besides, the HGC500 can operate steadily for 12 h with the accumulation of H2O2 reaching up to 4090±71 ppm and a Faradic efficiency of 95 %. The H2O2 generated from the electrocatalytic process in 3 h can degrade a variety of organic pollutants (10 ppm) in 4-20 min, displaying the potential in practical applications.
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Affiliation(s)
- Xiangyu You
- School of Chemical Engineering and Technology, Tianjin University, Tianjin 300350, People's Republic of China
| | - Fang Hou
- School of Chemical Engineering and Technology, Tianjin University, Tianjin 300350, People's Republic of China
| | - Tianzhu Xie
- School of Chemical Engineering and Technology, Tianjin University, Tianjin 300350, People's Republic of China
| | - An Cai
- School of Chemical Engineering and Technology, Tianjin University, Tianjin 300350, People's Republic of China
| | - Hongwei He
- School of Chemical Engineering and Technology, Tianjin University, Tianjin 300350, People's Republic of China
| | - Guozhu Li
- School of Chemical Engineering and Technology, Tianjin University, Tianjin 300350, People's Republic of China.
| | - Fengbao Zhang
- School of Chemical Engineering and Technology, Tianjin University, Tianjin 300350, People's Republic of China
| | - Wenchao Peng
- School of Chemical Engineering and Technology, Tianjin University, Tianjin 300350, People's Republic of China; Haihe Laboratory of Sustainable Chemical Transformations, Tianjin 300192, People's Republic of China; Institute of Shaoxing, Tianjin University, Zhejiang 312300, People's Republic of China
| | - Xiaobin Fan
- School of Chemical Engineering and Technology, Tianjin University, Tianjin 300350, People's Republic of China; Haihe Laboratory of Sustainable Chemical Transformations, Tianjin 300192, People's Republic of China; Institute of Shaoxing, Tianjin University, Zhejiang 312300, People's Republic of China
| | - Yang Li
- School of Chemical Engineering and Technology, Tianjin University, Tianjin 300350, People's Republic of China; Haihe Laboratory of Sustainable Chemical Transformations, Tianjin 300192, People's Republic of China; Institute of Shaoxing, Tianjin University, Zhejiang 312300, People's Republic of China.
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Liao W, Zheng L, Hao J, Huang L, Wang Q, Yin Z, Qi T, Jia L, Liu K. Eco-friendly fabrication of multifunctional magnetic plasmonic photocatalyst for adsorption, SERS monitoring and photodegradation of residual fluoroquinolone antibiotics in water. CHEMOSPHERE 2023; 331:138842. [PMID: 37142102 DOI: 10.1016/j.chemosphere.2023.138842] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/28/2023] [Revised: 04/30/2023] [Accepted: 05/01/2023] [Indexed: 05/06/2023]
Abstract
In this work, a kind of multifunctional magnetic plasmonic photocatalyst was prepared by a green and efficient process. Magnetic mesoporous anatase titanium dioxide (Fe3O4@mTiO2) was synthesized by microwave-assisted hydrothermal, and Ag NPs were simultaneously in-situ grown on Fe3O4@mTiO2 (Fe3O4@mTiO2@Ag), graphene oxide (GO) was then wrapped on Fe3O4@mTiO2@Ag (Fe3O4@mTiO2@Ag@GO) to increase its adsorption capacity for fluoroquinolone antibiotics (FQs). Owing to the localized surface plasmon resonance (LSPR) effect of Ag, as well as the photocatalytic capacity of TiO2, a multifunctional platform based on Fe3O4@mTiO2@Ag@GO was constructed for adsorption, surface-enhanced Raman spectroscopy (SERS) monitoring and photodegradation of FQs in water. The quantitative SERS detection of norfloxacin (NOR), ciprofloxacin (CIP), and enrofloxacin (ENR) was demonstrated with LOD of 0.1 μg mL-1, and the qualitative analysis was confirmed by density functional theory (DFT) calculation. The photocatalytic degradation rate of NOR over Fe3O4@mTiO2@Ag@GO was about 4.6 and 1.4 times faster than that of Fe3O4@mTiO2 and Fe3O4@mTiO2@Ag, indicating the synergetic effects of Ag NPs and GO, the used Fe3O4@mTiO2@Ag@GO can be easily recovered and recycled for at least 5 times. Thus, the eco-friendly magnetic plasmonic photocatalyst provided a potential solution for the removal and monitoring of residual FQs in environmental water.
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Affiliation(s)
- Wenlong Liao
- School of Food and Biological Engineering, Chengdu University, Chengdu, 610106, China; Key Laboratory of Medicinal and Edible Plants Resources Development of Sichuan Education Department, Sichuan Industrial Institute of Antibiotics, College of Pharmacy, Chengdu University, Chengdu, 610106, China.
| | - Li Zheng
- Key Laboratory of Medicinal and Edible Plants Resources Development of Sichuan Education Department, Sichuan Industrial Institute of Antibiotics, College of Pharmacy, Chengdu University, Chengdu, 610106, China
| | - Juan Hao
- Key Laboratory of Medicinal and Edible Plants Resources Development of Sichuan Education Department, Sichuan Industrial Institute of Antibiotics, College of Pharmacy, Chengdu University, Chengdu, 610106, China
| | - Lijuan Huang
- Key Laboratory of Medicinal and Edible Plants Resources Development of Sichuan Education Department, Sichuan Industrial Institute of Antibiotics, College of Pharmacy, Chengdu University, Chengdu, 610106, China
| | - Qinghui Wang
- School of Food and Biological Engineering, Chengdu University, Chengdu, 610106, China
| | - Zhihang Yin
- Key Laboratory of Medicinal and Edible Plants Resources Development of Sichuan Education Department, Sichuan Industrial Institute of Antibiotics, College of Pharmacy, Chengdu University, Chengdu, 610106, China
| | - Ting Qi
- Sichuan Industrial Institute of Antibiotics, College of Pharmacy, Chengdu University, Chengdu, 610106, China
| | - Lingpu Jia
- Key Laboratory of Medicinal and Edible Plants Resources Development of Sichuan Education Department, Sichuan Industrial Institute of Antibiotics, College of Pharmacy, Chengdu University, Chengdu, 610106, China; Institute for Advanced Study, Chengdu University, Chengdu, 610106, China
| | - Kunping Liu
- Key Laboratory of Medicinal and Edible Plants Resources Development of Sichuan Education Department, Sichuan Industrial Institute of Antibiotics, College of Pharmacy, Chengdu University, Chengdu, 610106, China.
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Zhao C, Liang L, Shi Q, Xia H, Li C, Ma J. Effective degradation of tetracycline via recyclable free-standing three-dimensional copper-based graphene as a persulfate catalyst. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2023; 30:62410-62421. [PMID: 36941523 DOI: 10.1007/s11356-023-26407-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/07/2022] [Accepted: 03/07/2023] [Indexed: 05/10/2023]
Abstract
Water pollution by antibiotics is a serious and growing problem. Given this challenge, a free-standing three-dimensional (3D) reduced graphene oxide foam supported copper oxide nanoparticles (3D-rGO-CuxO) was synthesized using GO as a precursor and applied as an efficient persulfate activator for tetracycline (TC) degradation. The influences of CuxO mass, solution pH, persulfate dosage, and common anions on the TC degradation were investigated in detail. Analytical techniques indicated that the 3D-rGO-CuxO showed a cross-linking three-dimensional network structure, and CuxO particles with irregular shapes were uniformly loaded on graphene pore walls. The XPS and Auger spectra of Cu confirmed that Cu2O was the main component in solid copper compounds. The addition of CuxO was vitally important for the activation of the oxidation system, and the removal rate reached 98% with a CuxO load of 7:1. The pH showed little influence on the activation effect on TC degradation. For common anions, Cl- and CO32- had little influence on the system, while humic acid had a great inhibitory effect. The EPR test and quenching experiment revealed that the active substances in the oxidative degradation process mainly include SO4-·, ·OH, 1O2, and reactive Cu(III). Additionally, the 3D-rGO-CuxO material proved highly stable according to the replicated test results and was promising for the remediation of antibiotic-contaminated water.
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Affiliation(s)
- Chuanqi Zhao
- School of Materials and Environment, Guangxi Key Laboratory of Advanced Structural Materials and Carbon Neutralization, Guangxi Colleges and Universities Key Laboratory of Environmental-Friendly Materials and New Technology For Carbon Neutralization, Guangxi Minzu University, Guangxi Nanning, 530006, China.
| | - Liying Liang
- School of Materials and Environment, Guangxi Key Laboratory of Advanced Structural Materials and Carbon Neutralization, Guangxi Colleges and Universities Key Laboratory of Environmental-Friendly Materials and New Technology For Carbon Neutralization, Guangxi Minzu University, Guangxi Nanning, 530006, China
| | - Qin Shi
- School of Materials and Environment, Guangxi Key Laboratory of Advanced Structural Materials and Carbon Neutralization, Guangxi Colleges and Universities Key Laboratory of Environmental-Friendly Materials and New Technology For Carbon Neutralization, Guangxi Minzu University, Guangxi Nanning, 530006, China
| | - Hui Xia
- Zhengzhou Institute of Multipurpose Utilization of Mineral Resources, CAGS, Zhengzhou, 450006, China
| | - Chaofan Li
- Key Lab of Eco-Restoration of Regional Contaminated Environment, Ministry of Education, Shenyang University, Shenyang, 110044, China
| | - Junguan Ma
- School of Artificial Intelligence, Shenyang University of Technology, Shenyang, 110870, China
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10
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Qian X, Ma Y, Arif M, Xia J, He G, Chen H. Construction of 2D/2D Bi4O5Br2/Bi2WO6 Z-scheme heterojunction for highly efficient photodegradation of ciprofloxacin under visible light. Sep Purif Technol 2023. [DOI: 10.1016/j.seppur.2023.123794] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/08/2023]
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11
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Chen X, Xian Z, Gao S, Bai L, Liang S, Tian H, Wang C, Gu C. Mechanistic insights into surface catalytic oxidation of fluoroquinolone antibiotics on sediment mackinawite. WATER RESEARCH 2023; 232:119651. [PMID: 36731203 DOI: 10.1016/j.watres.2023.119651] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/21/2022] [Revised: 01/15/2023] [Accepted: 01/19/2023] [Indexed: 06/18/2023]
Abstract
Fluoroquinolone antibiotics (FQs) have been widely detected in the sediments due to vast production and consumption. In this study, the transformation of FQs was investigated in the presence of sediment mackinawite (FeS) under ambient conditions. Moreover, the role of dissolved oxygen was evaluated for the enhanced degradation of FQs induced by FeS. Our results demonstrated that typical FQs (i.e., flumequine, enrofloxacin and ciprofloxacin) could be efficiently adsorbed and degraded by FeS under neutral pH conditions. As indicated by the results of electron paramagnetic resonance analysis (EPR) and free radicals quenching experiments, hydroxyl radical and superoxide radical anions were identified as the dominant reactive species responsible for FQs degradation. Based on the results of product analysis and theoretical calculation, the degradation of FQs mainly occurred at the piperazine ring and quinolone structure. Our results show that FQs could be efficiently removed by FeS, which benefits understanding the transformation of antibiotics in the sediments, and even sheds light on the remediation of organic pollutants contaminated soils.
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Affiliation(s)
- Xiru Chen
- State Key Laboratory of Pollution Control and Resource Reuse, School of Environment, Nanjing University, Nanjing, Jiangsu 210023, PR China
| | - Zeyu Xian
- State Key Laboratory of Pollution Control and Resource Reuse, School of Environment, Nanjing University, Nanjing, Jiangsu 210023, PR China; Nanjing Kaver Scientific Instruments, Institute of Forestry Chemical Industry, China Academy of Forestry, Nanjing 210042, PR China
| | - Song Gao
- State Key Laboratory of Pollution Control and Resource Reuse, School of Environment, Nanjing University, Nanjing, Jiangsu 210023, PR China
| | - Lihua Bai
- State Key Laboratory of Pollution Control and Resource Reuse, School of Environment, Nanjing University, Nanjing, Jiangsu 210023, PR China
| | - Sijia Liang
- State Key Laboratory of Pollution Control and Resource Reuse, School of Environment, Nanjing University, Nanjing, Jiangsu 210023, PR China
| | - Haoting Tian
- School of Environmental Science and Engineering, Suzhou University of Science and Technology, Suzhou 215009, PR China
| | - Chao Wang
- State Key Laboratory of Pollution Control and Resource Reuse, School of Environment, Nanjing University, Nanjing, Jiangsu 210023, PR China.
| | - Cheng Gu
- State Key Laboratory of Pollution Control and Resource Reuse, School of Environment, Nanjing University, Nanjing, Jiangsu 210023, PR China
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12
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Ao X, Zhang X, Li S, Yang Y, Sun W, Li Z. Comprehensive understanding of fluoroquinolone degradation via MPUV/PAA process: Radical chemistry, matrix effects, degradation pathways, and toxicity. JOURNAL OF HAZARDOUS MATERIALS 2023; 445:130480. [PMID: 36462245 DOI: 10.1016/j.jhazmat.2022.130480] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/28/2022] [Revised: 10/21/2022] [Accepted: 11/23/2022] [Indexed: 06/17/2023]
Abstract
The wide occurrence of fluoroquinolones (FQs) in aquatic environments has aroused increasing concern about their potential adverse effects on human health. In this study, an emerging advanced oxidation process, i.e., the Medium-Pressure Ultraviolet/Peracetic Acid (MPUV/PAA) process, was used to degrade FQs (e.g., levofloxacin (LEV), norfloxacin, and ciprofloxacin). Compared with the MPUV process alone and the PAA process alone, the MPUV/PAA process significantly promoted degradation of FQs due to the considerable contribution of reactive radicals. Probe experiments revealed that PAA-specific organic radicals (e.g., CH3C(O)O• and CH3C(O)OO•) were the major radicals responsible for FQ elimination. Rapid degradation of FQs via the MPUV/PAA process was achieved within a wide range of pH values (5-9) by selecting LEV as the target compound, and higher pH values were more favorable for the reaction. The slight impacts of Cl- and CO32-/HCO3- on LEV removal were observed. The transformation products and pathways of LEV were identified, and nearly all of the transformation pathways occurred on the piperazine ring. Based on Quantitative Structure-Activity Relationship (QSAR) analysis, most of the products had lower toxicities than LEV. Overall, these findings improve our understanding and application of the MPUV/PAA process for degrading emerging contaminants in (waste)water treatment.
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Affiliation(s)
- Xiuwei Ao
- School of Energy and Environmental Engineering, Beijing Key Laboratory of Resource-oriented Treatment of Industrial Pollutants, International Science and Technology Cooperation Base for Environmental and Energy Technology of MOST, University of Science and Technology Beijing, Beijing 100083, China
| | - Xi Zhang
- School of Energy and Environmental Engineering, Beijing Key Laboratory of Resource-oriented Treatment of Industrial Pollutants, International Science and Technology Cooperation Base for Environmental and Energy Technology of MOST, University of Science and Technology Beijing, Beijing 100083, China
| | - Shiyu Li
- School of Energy and Environmental Engineering, Beijing Key Laboratory of Resource-oriented Treatment of Industrial Pollutants, International Science and Technology Cooperation Base for Environmental and Energy Technology of MOST, University of Science and Technology Beijing, Beijing 100083, China
| | - Yiting Yang
- School of Energy and Environmental Engineering, Beijing Key Laboratory of Resource-oriented Treatment of Industrial Pollutants, International Science and Technology Cooperation Base for Environmental and Energy Technology of MOST, University of Science and Technology Beijing, Beijing 100083, China
| | - Wenjun Sun
- School of Environment, Tsinghua University, Beijing 100084, China; Research Institute for Environmental Innovation (Suzhou) Tsinghua, Suzhou 215163, China.
| | - Zifu Li
- School of Energy and Environmental Engineering, Beijing Key Laboratory of Resource-oriented Treatment of Industrial Pollutants, International Science and Technology Cooperation Base for Environmental and Energy Technology of MOST, University of Science and Technology Beijing, Beijing 100083, China.
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13
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Shi J, Jiang J, Chen Q, Wang L, Nian K, Long T. Production of higher toxic intermediates of organic pollutants during chemical oxidation processes: A review. ARAB J CHEM 2023. [DOI: 10.1016/j.arabjc.2023.104856] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/30/2023] Open
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14
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A review of the antibiotic ofloxacin: current status of ecotoxicology and scientific advances in its removal from aqueous systems by adsorption technology. Chem Eng Res Des 2023. [DOI: 10.1016/j.cherd.2023.03.025] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/18/2023]
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15
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Cai W, Zhang W, Chen Z. Magnetic Fe 3O 4@ZIF-8 nanoparticles as a drug release vehicle: pH-sensitive release of norfloxacin and its antibacterial activity. Colloids Surf B Biointerfaces 2023; 223:113170. [PMID: 36696823 DOI: 10.1016/j.colsurfb.2023.113170] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2022] [Revised: 01/14/2023] [Accepted: 01/21/2023] [Indexed: 01/23/2023]
Abstract
Metal-organic frameworks (MOFs) have a high specific surface area and inherent biodegradability due to their unique structure and composition. As well, owing to the properties of nanomaterials and especially their magnetic features, Fe3O4 nanoparticles and MOFs composite materials have great potential in the design and application of drug release. The present work: firstly, investigated norfloxacin loading in magnetic metal organic framework (Fe3O4@ZIF-8); and secondly, studied the release of norfloxacin and its antibacterial activity. Results showed the release efficiencies reached 97 % at 310 K after 84 h (pH 7.4). Drug release behavior was tested at various pH levels and it was found that Fe3O4@ZIF-8 has pH-sensitive properties. Furthermore, the release model calculation illustrated that the release process fitted well to the Bhaskar model. The magnetic properties of Fe3O4@ZIF-8 confirmed that the composite has potential application for a targeted drug delivery system. The mechanism of pH-responsive norfloxacin release was combined with diffusion, ion exchange and electrostatic repulsion. Furthermore, the antibacterial activities of Fe3O4@ZIF-8 and NOR-Fe3O4@ZIF-8 were tested against Escherichia coli. Results showed that Fe3O4@ZIF-8 had good biocompatibility while NOR-Fe3O4@ZIF-8 can deter or inhibit the actions of microorganisms.
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Affiliation(s)
- Wanling Cai
- School of Mechanical and Intelligent Manufacturing, Fujan Chuanzheng Communications College, Fuzhou 350007, Fujian Province, China; School of Environmental Science and Engineering, Fujian Normal University, Fuzhou 350007, Fujian Province, China
| | - Wei Zhang
- Centre for Marine Bioproducts Development, Flinders University, Bedford Park, SA 5042, Australia
| | - Zuliang Chen
- School of Environmental Science and Engineering, Fujian Normal University, Fuzhou 350007, Fujian Province, China.
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16
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Synergy of dielectric barrier discharge plasma and magnetically separable MOF-derived Co@C composite for the improved degradation of norfloxacin antibiotic in water. Sep Purif Technol 2023. [DOI: 10.1016/j.seppur.2022.122488] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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17
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Han J, Xu Y, Xu D, Niu Y, Li L, Li F, Li Z, Wang H. Mechanism of downward migration of quinolone antibiotics in antibiotics polluted natural soil replenishment water and its effect on soil microorganisms. ENVIRONMENTAL RESEARCH 2023; 218:115032. [PMID: 36502909 DOI: 10.1016/j.envres.2022.115032] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/17/2022] [Revised: 12/06/2022] [Accepted: 12/07/2022] [Indexed: 06/17/2023]
Abstract
Reclaimed water is widely concerned as an effective recharge of groundwater and surface water, but trace organic pollutants produced by traditional wastewater treatment plants (WWTPs) would cause environmental pollution (water and soil) during infiltration. Therefore, the effects of reclaimed water containing ofloxacin (OFL) and ciprofloxacin (CIP) in antibiotics polluted natural soil (APNS) were investigated by simulating soil aquifer treatment systems (SATs). The experiment results showed that OFL and CIP in water were adsorbed and microbially degraded mainly at 30 cm, and the concentration of OFL and CIP in soil increased with depth, which were mainly due to the desorption from APNS. Concurrently, the change in replenishment water concentration also significantly affected OFL and CIP in pore water and soil. Although OFL and CIP inhibited the diversity of soil microbial community, they also promoted the growth of some microorganisms. As the dominant bacteria, Proteobacteria and Acidobacteriota can effectively participate in the degradation of OFL and CIP. The degradation effects of soil microorganisms on OFL and CIP were 45.48% and 42.39%, respectively, indicating that soil microorganisms selectively degraded pollutants. This experiment was carried out on APNS, which provided a reference for future studies on the migration of trace organic pollutants under natural conditions.
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Affiliation(s)
- Jinlong Han
- Tangshan Key Laboratory of Bioelectrochemical Water Pollution Control Technology, North China University of Science and Technology, Tangshan, 063210, PR China; Beijing Institute of Water Science and Technology, Beijing, 100048, PR China; School of Energy and Environmental Engineering, Hebei University of Technology, Tianjin, 300401, PR China
| | - Yufei Xu
- Tangshan Key Laboratory of Bioelectrochemical Water Pollution Control Technology, North China University of Science and Technology, Tangshan, 063210, PR China
| | - Duo Xu
- Tangshan Key Laboratory of Bioelectrochemical Water Pollution Control Technology, North China University of Science and Technology, Tangshan, 063210, PR China
| | - Yunxia Niu
- Tangshan Key Laboratory of Bioelectrochemical Water Pollution Control Technology, North China University of Science and Technology, Tangshan, 063210, PR China; Hebei Mining Area Ecological Restoration Industry Technology Research Institute Tangshan, 063000, PR China
| | - Lei Li
- Beijing Institute of Water Science and Technology, Beijing, 100048, PR China
| | - Fuping Li
- Hebei Mining Area Ecological Restoration Industry Technology Research Institute Tangshan, 063000, PR China
| | - Zhaoxin Li
- Beijing Institute of Water Science and Technology, Beijing, 100048, PR China; School of Water Conservancy and Hydroelectric Power, Hebei University of Engineering, Handan, 056038, PR China.
| | - Hao Wang
- Tangshan Key Laboratory of Bioelectrochemical Water Pollution Control Technology, North China University of Science and Technology, Tangshan, 063210, PR China; Hebei Mining Area Ecological Restoration Industry Technology Research Institute Tangshan, 063000, PR China.
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18
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Ohale PE, Igwegbe CA, Iwuozor KO, Emenike EC, Obi CC, Białowiec A. A review of the adsorption method for norfloxacin reduction from aqueous media. MethodsX 2023; 10:102180. [PMID: 37122364 PMCID: PMC10133760 DOI: 10.1016/j.mex.2023.102180] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2022] [Accepted: 04/10/2023] [Indexed: 05/02/2023] Open
Abstract
Norfloxacin (NRFX) is one of a class of antibiotics known as broad-spectrum fluoroquinolone antibiotic that is frequently used to treat infectious disorders in both animals and humans. NRFX is considered an emergent pharmaceutical contaminate. This review's objective is to evaluate empirical data on NRFX's removal from aqueous medium. The environmental danger of NRFX in the aquatic environment was validated by an initial ecotoxicological study. Graphene oxide/Metal Organic Framework (MOF) based composite, followed by Magnesium oxide/Chitosan/Graphene oxide composite gave the highest NRFX adsorption capacities (Qmax) of 1114.8 and 1000 mg/g, respectively. The main adsorption mechanisms for NRFX uptake include electrostatic interactions, H-bonds, π-π interactions, electron donor-acceptor interactions, hydrophobic interactions, and pore diffusion. The adsorptive uptake of NRFX were most suitably described by Langmuir isotherm and pseudo-second order implying adsorbate-to-adsorbent electron transfer on a monolayer surface. The thermodynamics of NRFX uptake is heavily dependent on the makeup of the adsorbent, and the selection of the eluent for desorption from the solid phase is equally important. There were detected knowledge gaps in column studies and adsorbent disposal method. There's great interest in scale-up and industrial applications of research results that will aid in management of water resources for sustainability.
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Affiliation(s)
| | - Chinenye Adaobi Igwegbe
- Department of Chemical Engineering, Nnamdi Azikiwe University, P. M. B. 5025, Awka, Nigeria
- Department of Applied Bioeconomy, Wroclaw University of Environmental and Life Sciences, Poland
- Corresponding authors. @chinenyeigwegbe
| | - Kingsley O. Iwuozor
- Department of Pure and Industrial Chemistry, Nnamdi Azikiwe University, P. M. B. 5025, Awka, Nigeria
- Nigeria Sugar Institute, Ilorin, Nigeria
- Corresponding authors. @chinenyeigwegbe
| | - Ebuka Chizitere Emenike
- Department of Pure and Industrial Chemistry, Nnamdi Azikiwe University, P. M. B. 5025, Awka, Nigeria
| | - Christopher Chiedozie Obi
- Department of Chemical Engineering, Nnamdi Azikiwe University, P. M. B. 5025, Awka, Nigeria
- Department of Polymer Engineering, Nnamdi Azikiwe University, P.M.B. 5025, Awka 420218, Nigeria
| | - Andrzej Białowiec
- Department of Applied Bioeconomy, Wroclaw University of Environmental and Life Sciences, Poland
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Sciscenko I, Mora M, Micó P, Escudero-Oñate C, Oller I, Arques A. EEM-PARAFAC as a convenient methodology to study fluorescent emerging pollutants degradation: (fluoro)quinolones oxidation in different water matrices. THE SCIENCE OF THE TOTAL ENVIRONMENT 2022; 852:158338. [PMID: 36041605 DOI: 10.1016/j.scitotenv.2022.158338] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/14/2022] [Revised: 07/21/2022] [Accepted: 08/23/2022] [Indexed: 06/15/2023]
Abstract
Commercial (fluoro)quinolones ((F)Qs), ciprofloxacin (CIP), enrofloxacin (ENR), ofloxacin (OFL), oxolinic acid (OA) and flumequine (FLU) (3 μM each), were degraded with solar-photo-Fenton in a compound parabolic concentrator photoreactor (total volume 5 L) in ultra-pure water at pH = 5.0, salty water at pH = 5.0, and simulated wastewater at pH = 5.0 and 7.5. Iron speciation (its hydrolysis and the complexation with (F)Qs 15 μM and/or chlorides 0.5 M) was calculated at pH 5.0, observing, negligible formation of Fe(III)-chloride complexes, and that >99 % of the total (F)Qs are forming complexes stoichiometry 1:1 with Fe(III) (which also increases the percentage of Fe(OH)2+), being minoritarian the free antibiotic form. On the other hand, EEM-PARAFAC (fluorescence excitation-emission matrices-parallel factor analysis) was employed to simultaneously study the behaviour of: i) 4 structure-related groups corresponding to parent pollutants and slightly oxidised by-products, ENR-like (including CIP), OFL-like, OA-like, FLU-like; ii) intermediates still showing (F)Q characteristics (exhibiting analogous fluorescent fingerprint to ENR-like one, but shifted to shorter wavelengths); iii) humic-like substances. The scores from the 4 PARAFAC components corresponding to the parent pollutants were plotted vs. accumulated energy, exhibiting slower decay than their individual removals (measured with HPLC-UV/vis) due to the contribution of the aforementioned by-products to the overall fluorescence. Moreover, thiabendazole (TBZ) 3 μM was added as fluorescence interference. The presence of (F)Qs greatly enhanced TBZ degradation due to (F)Q-Fe(III) complex formation, keeping iron active at pH = 5.0 for Fenton process. The EEM-PARAFAC model was able to recognise the former six components plus an additional one attributable to TBZ-like.
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Affiliation(s)
- Iván Sciscenko
- Departamento de Ingeniería Textil y Papelera, Universitat Politècnica de València (UPV), Plaza Ferrándiz y Carbonell S/N, 03801 Alcoy, Spain.
| | - Margarita Mora
- Departamento de Matemática Aplicada, Universitat Politècnica de València, Plaza Ferrándiz y Carbonell S/N, 03801 Alcoy, Spain
| | - Pau Micó
- Departamento de Informática de Sistemas y Computadores, Universitat Politècnica de València, Plaza Ferrándiz y Carbonell S/N, 03801 Alcoy, Spain
| | | | - Isabel Oller
- CIEMAT-Plataforma Solar de Almería, Carretera de Senés km 4, 04200 Tabernas, Spain; CIESOL, Joint Centre of the University of Almería-CIEMAT, Ctra. Sacramento s/n, 04120 Almería, Spain
| | - Antonio Arques
- Departamento de Ingeniería Textil y Papelera, Universitat Politècnica de València (UPV), Plaza Ferrándiz y Carbonell S/N, 03801 Alcoy, Spain
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20
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Zhang Z, Wang Y, Gao P, Feng L, Zhang L, Liu Y, Du Z. Visible-light-driven photocatalytic degradation of ofloxacin by BiOBr nanocomposite modified with oxygen vacancies and N-doped CQDs: Enhanced photodegradation performance and mechanism. CHEMOSPHERE 2022; 307:135976. [PMID: 35944686 DOI: 10.1016/j.chemosphere.2022.135976] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/06/2022] [Revised: 06/17/2022] [Accepted: 08/03/2022] [Indexed: 06/15/2023]
Abstract
The rapid recombination of photogenerated carriers and weak light absorption capacity are two major challenges for bismuth-based photocatalysts. Here, N-CQDs/BiO1-xBr micro-flower photocatalysts with the visible-light activity were fabricated through the ethylene glycol solvothermal method for the first time, and oxygen vacancies (OVs) and N-doped carbon quantum dots (N-CQDs) were simultaneously introduced on the surface of BiOBr. OVs were introduced to form defective BiOBr (BiO1-xBr). N-CQDs and BiO1-xBr formed a strong binding effect. Then, the composition, morphology, crystal structure and photoelectric property of photocatalysts were studied, and the mechanism and pathway of ofloxacin (OFL) photodegradation were studied. N-CQDs/BiO1-xBr-4 was a micro-flower composed of nanosheets with a thickness of about 60 nm, this structure produced multiple light reflections. Photoelectrochemical analysis confirmed that the synergistic effect of OVs and N-CQDs significantly promoted the electron-hole separation (3 times vs BiOBr) and enhanced the light absorption range (Eg = 2.96 eV vs 3.24 eV). Meanwhile, the removal rate of OFL by N-CQDs/BiO1-xBr-4 was 6 times higher than that by BiOBr (Kobs of N-CQDs/BiO1-xBr-4 was 32 times higher than that of BiOBr). Electron spin resonances analysis and radical quenching experiments showed that ·O2- and h+ played dominant roles in the OFL photodegradation system, and their contribution rates were 89.84% and 70.31%, respectively. There were main degradation pathways for OFL, including oxidation, dealkylation, hydroxylation and decarboxylation. This study explored the synergistic and complementary effects between OVs and N-CQDs, and provided a promising strategy for the photodegradation of toxic antibiotics by visible-light-driven photocatalysts.
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Affiliation(s)
- Zijing Zhang
- Beijing Key Laboratory for Source Control Technology of Water Pollution, Engineering Research Center for Water Pollution Source Control and Eco-remediation, Beijing Forestry University, Beijing, 100083, China
| | - Yang Wang
- Beijing Key Laboratory for Source Control Technology of Water Pollution, Engineering Research Center for Water Pollution Source Control and Eco-remediation, Beijing Forestry University, Beijing, 100083, China
| | - Peng Gao
- Beijing Key Laboratory for Source Control Technology of Water Pollution, Engineering Research Center for Water Pollution Source Control and Eco-remediation, Beijing Forestry University, Beijing, 100083, China
| | - Li Feng
- Beijing Key Laboratory for Source Control Technology of Water Pollution, Engineering Research Center for Water Pollution Source Control and Eco-remediation, Beijing Forestry University, Beijing, 100083, China.
| | - Liqiu Zhang
- Beijing Key Laboratory for Source Control Technology of Water Pollution, Engineering Research Center for Water Pollution Source Control and Eco-remediation, Beijing Forestry University, Beijing, 100083, China.
| | - Yongze Liu
- Beijing Key Laboratory for Source Control Technology of Water Pollution, Engineering Research Center for Water Pollution Source Control and Eco-remediation, Beijing Forestry University, Beijing, 100083, China
| | - Ziwen Du
- Beijing Key Laboratory for Source Control Technology of Water Pollution, Engineering Research Center for Water Pollution Source Control and Eco-remediation, Beijing Forestry University, Beijing, 100083, China
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21
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Yu J, Jiao R, Sun H, Xu H, He Y, Wang D. Removal of microorganic pollutants in aquatic environment: The utilization of Fe(VI). JOURNAL OF ENVIRONMENTAL MANAGEMENT 2022; 316:115328. [PMID: 35658263 DOI: 10.1016/j.jenvman.2022.115328] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/05/2022] [Revised: 05/09/2022] [Accepted: 05/13/2022] [Indexed: 06/15/2023]
Abstract
Microorganic pollutants (MOPs) in aquatic environment with low levels but high toxicity are harmful to ecosystem and human health. Fe(VI) has a dual-functional role in oxidation and coagulation, and can effectively remove MOPs, heavy metal, phosphate, particulates and colloids. Moreover, Fe(VI) can combine with traditional coagulants, or use as a pretreatment for membrane treatment because of its characters to generate nanoparticles by degradation in water. Based on the relevant toxicity experiments, Fe(VI) had been proved to be safe for the efficient treatment of MOPs. For better utilization of Fe(VI), its oxidation and coagulation mechanisms are summarized, and the knowledge about the control parameters, utilization methods, and toxicity effect for Fe(VI) application are reviewed in this paper. pH, different valences of iron, environmental substances, and other parameters are summarized in this study to clarify the important factors in the treatment of MOPs with Fe(VI). In the future study, aiming at cost reduction in Fe(VI) preparation, transportation and storage, enhancement of oxidation in the intermediate state, and better understanding the mechanism between interface and Fe(VI) oxidation will help promote the application of Fe(VI) in the removal of MOPs. This study offers guidelines for the application and development of Fe(VI) for the treatment of MOPs in aquatic environment.
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Affiliation(s)
- Junjie Yu
- State Key Laboratory of Environmental Aquatic Chemistry, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing, 100085, China; University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Ruyuan Jiao
- State Key Laboratory of Environmental Aquatic Chemistry, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing, 100085, China; Yangtze River Delta Branch, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Yiwu City, Zhejiang Province, 322000, China.
| | - Hongyan Sun
- School of Environmental and Chemical Engineering, Foshan University, Foshan, 528000, China
| | - Hui Xu
- State Key Laboratory of Environmental Aquatic Chemistry, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing, 100085, China
| | - Yi He
- State Key Laboratory of Environmental Aquatic Chemistry, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing, 100085, China
| | - Dongsheng Wang
- College of Environmental and Resource Sciences, Zhejiang University, Hangzhou, 310058, China.
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22
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Li C, Wu X, Hu J, Shan J, Zhang Z, Huang X, Liu H. Graphene-based photocatalytic nanocomposites used to treat pharmaceutical and personal care product wastewater: A review. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2022; 29:35657-35681. [PMID: 35257332 DOI: 10.1007/s11356-022-19469-4] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/27/2021] [Accepted: 02/23/2022] [Indexed: 06/14/2023]
Abstract
Photocatalytic technology has been widely studied by researchers in the field of environmental purification. This technology can not only completely convert organic pollutants into small molecules of CO2 and H2O through redox reactions but also remove metal ions and other inorganic substances from water. This article reviews the research progress of graphene-based photocatalytic nanocomposites in the treatment of wastewater. First, we elucidate the basic principles of photocatalysis, the types of graphene-based nanocomposites, and the role of graphene in photocatalysis (e.g., graphene can accelerate the separation of photon-hole pairs and increase the intensity and range of light absorption). Second, the preparation, characterization, and application of composites in wastewater are introduced. We also discuss the kinetic model of the photocatalytic degradation of pollutants. Finally, the enhancement mechanism of graphene in terms of photocatalysis is not completely clear, and graphene-based photocatalysts with high catalytic efficiency, low cost, and large-scale production have not yet appeared, so there is an urgent need for more extensive and in-depth research.
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Affiliation(s)
- Caifang Li
- Guizhou Provincial Key Laboratory for Information Systems of Mountainous Areas and Protection of Ecological Environment, Guizhou Normal University, Guiyang, 550001, China
| | - Xianliang Wu
- Guizhou Institute of Biology, Guiyang, Guizhou, 550009, China
| | - Jiwei Hu
- Guizhou Provincial Key Laboratory for Information Systems of Mountainous Areas and Protection of Ecological Environment, Guizhou Normal University, Guiyang, 550001, China
| | - Junyue Shan
- Guizhou Provincial Key Laboratory for Information Systems of Mountainous Areas and Protection of Ecological Environment, Guizhou Normal University, Guiyang, 550001, China
| | - Zhenming Zhang
- Guizhou Institute of Biology, Guiyang, Guizhou, 550009, China
| | - Xianfei Huang
- Guizhou Provincial Key Laboratory for Information Systems of Mountainous Areas and Protection of Ecological Environment, Guizhou Normal University, Guiyang, 550001, China.
| | - Huijuan Liu
- The Key Laboratory of Environmental Pollution Monitoring and Disease Control, Ministry of Education, Guizhou Medical University, Guiyang, 550025, China
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An Z, Sun J, Mei Q, Wei B, Li M, Xie J, He M, Wang Q. Unravelling the effects of complexation of transition metal ions on the hydroxylation of catechol over the whole pH region. J Environ Sci (China) 2022; 115:392-402. [PMID: 34969467 DOI: 10.1016/j.jes.2021.08.011] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/06/2021] [Revised: 07/29/2021] [Accepted: 08/09/2021] [Indexed: 06/14/2023]
Abstract
Catechol pollutants (CATPs) serving as chelating agents could coordinate with many metal ions to form various CATPs-metal complexes. Little information is available on the effects of complexation of metal ions on CATPs degradation. This work presents a systematical study of •OH-mediated degradation of catechol and catechol-metal complexes over the whole pH range in advanced oxidation processes (AOPs). Results show that the pH-dependent complexation of metal ions (Zn2+, Cu2+, Ti4+ and Fe3+) promotes the deprotonation of catechol under neutral and even acidic conditions. The radical adduct formation (RAF) reactions are both thermodynamically and kinetically favorable for all dissociation and complexation species, and OH/O- group-containing C positions are more vulnerable to •OH attack. The kinetic results show that the complexation of the four metal ions offers a wide pH range of effectiveness for catechol degradation. At pH 7, the apparent rate constant (kapp) values for different systems follow the order of catechol+Ti4+ ≈ catechol+Zn2+ > catechol+Cu2+ > catechol+Fe3+ > catechol. The mechanistic and kinetic results would greatly improve our understanding of the degradation of CATPs-metal and other organics-metal complexes in AOPs. The toxicity assessment indicates that the •OH-based AOPs have the ability for decreasing the toxicity and increasing the biodegradability during the processes of catechol degradation.
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Affiliation(s)
- Zexiu An
- Environment Research Institute, Shandong University, Qingdao 266237, China
| | - Jianfei Sun
- School of Environmental and Materials Engineering, Yantai University, Yantai 264005, China
| | - Qiong Mei
- Environment Research Institute, Shandong University, Qingdao 266237, China
| | - Bo Wei
- Environment Research Institute, Shandong University, Qingdao 266237, China; College of Safety and Environmental Engineering, Shandong University of Science and Technology, Qingdao 266590, China
| | - Mingxue Li
- Environment Research Institute, Shandong University, Qingdao 266237, China
| | - Ju Xie
- School of Chemistry and Chemical Engineering, Yangzhou University, Yangzhou 225002, China
| | - Maoxia He
- Environment Research Institute, Shandong University, Qingdao 266237, China.
| | - Qiao Wang
- Environment Research Institute, Shandong University, Qingdao 266237, China
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High Photocatalytic Activity of g-C3N4/La-N-TiO2 Composite with Nanoscale Heterojunctions for Degradation of Ciprofloxacin. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2022; 19:ijerph19084793. [PMID: 35457660 PMCID: PMC9027728 DOI: 10.3390/ijerph19084793] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/02/2022] [Revised: 04/06/2022] [Accepted: 04/09/2022] [Indexed: 12/21/2022]
Abstract
Ciprofloxacin (CIP) in natural waters has been taken as a serious pollutant because of its hazardous biological and ecotoxicological effects. Here, a 3D nanocomposite photocatalyst g-C3N4/La-N-TiO2 (CN/La-N-TiO2) was successfully synthesized by a simple and reproducible in-situ synthetic method. The obtained composite was characterized by XRD, SEM, BET, TEM, mapping, IR, and UV-vis spectra. The photocatalytic degradation of ciprofloxacin was investigated by using CN/La-N-TiO2 nanocomposite. The main influential factors such as pH of the solution, initial CIP concentration, catalyst dosage, and coexisting ions were investigated in detail. The fastest degradation of CIP occurred at a pH of about 6.5, and CIP (5 mg/L starting concentration) was completely degraded in about 60 min after exposure to the simulated solar light. The removal rates were rarely affected by Na+ (10 mg·L−1), Ca2+ (10 mg·L−1), Mg2+ (10 mg·L−1), and urea (5 mg·L−1), but decreased in the presence of NO3− (10 mg·L−1). The findings indicate that CN/La-N-TiO2 nanocomposite is a green and promising photocatalyst for large-scale applications and would be a candidate for the removal of the emerging antibiotics present in the water environment.
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Dou M, Wang J, Ma Z, Gao B, Huang X. Origins of selective differential oxidation of β-lactam antibiotics with different structure in an efficient visible-light driving mesoporous g-C 3N 4 activated persulfate synergistic mechanism. JOURNAL OF HAZARDOUS MATERIALS 2022; 426:128111. [PMID: 34954433 DOI: 10.1016/j.jhazmat.2021.128111] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/08/2021] [Revised: 12/10/2021] [Accepted: 12/16/2021] [Indexed: 06/14/2023]
Abstract
In the study, an efficient '1 + 1 > 2' synergistic coupling system driven by visible light consisting of mesoporous g-C3N4 (MCN) and persulfate (PS)was constructed. The free radical transformation, electron transfer and non-covalent interaction between the MCN layer and PS in the system were explored via experiments and DFT calculations. The similarity for the fate of the seven β-lactam antibiotics with typical structures in the oxidation system was studied systematically in depth. First, the consistencies and differences of the seven antibiotics were summarized from three aspects: three-dimensional structures, electron cloud distributions, and the vulnerable sites. Notably, the selective differential degradation of β-lactam antibiotics in the MCN/PS system was speculated to be related with the molecular ionization potential (MIP), as a key index to describe the difficulty of oxidation. The distribution relationship between MIP and the oxidation kinetic constant (K) was explored and showed the following trend: a higher MIP indicates a weaker ability to provide electrons, and this leads to a greater resistance to oxidative degradation. In total, four main oxidation pathways of β-lactam antibiotics were systematically summarized combining HPLC-QTOF-MS and the simplified Fukui function calculation. The toxicity assessment of intermediate products provided by the T.E.S.T software of USEPA also shows a decreasing trend in the oxidation process. In the end, the superior practicability and stability of the MCN/PS system was verified by complex environment simulation and cyclic test. This research clarified the selective differential degradation mechanism of β-lactam antibiotics and provided a possible idea for the effective removal of refractory organic pollutants in water.
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Affiliation(s)
- Mengmeng Dou
- Beijing Key Laboratory of Aqueous Typical Pollutants Control and Water Quality Safeguard, Department of Municipal and Environmental Engineering, School of Civil Engineering, Beijing Jiaotong University, Haidian District, Beijing 100044, China
| | - Jin Wang
- Beijing Key Laboratory of Aqueous Typical Pollutants Control and Water Quality Safeguard, Department of Municipal and Environmental Engineering, School of Civil Engineering, Beijing Jiaotong University, Haidian District, Beijing 100044, China.
| | - Zhaokun Ma
- Shandong Academy for Environmental Planning, Jinan 250101, China
| | - Boru Gao
- Beijing Key Laboratory of Aqueous Typical Pollutants Control and Water Quality Safeguard, Department of Municipal and Environmental Engineering, School of Civil Engineering, Beijing Jiaotong University, Haidian District, Beijing 100044, China
| | - Xue Huang
- Beijing Greentech Technology Group Co., Ltd, Beijing 100083, China
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26
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Gaho MM, Memon GZ, Memon JUR, Arain JB, Arain AJ, Shah A, Samejo MQ. Synthesis of novel magnetic molecularly imprinted polymers by solid-phase extraction method for removal of Norfloxacin. CHINESE JOURNAL OF ANALYTICAL CHEMISTRY 2022. [DOI: 10.1016/j.cjac.2022.100079] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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Yao J, Tang Y, Zhang Y, Ruan M, Wu W, Sun J. New theoretical investigation of mechanism, kinetics, and toxicity in the degradation of dimetridazole and ornidazole by hydroxyl radicals in aqueous phase. JOURNAL OF HAZARDOUS MATERIALS 2022; 422:126930. [PMID: 34449347 DOI: 10.1016/j.jhazmat.2021.126930] [Citation(s) in RCA: 14] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/25/2021] [Revised: 08/14/2021] [Accepted: 08/15/2021] [Indexed: 06/13/2023]
Abstract
Dimetridazole (DMZ) and ornidazole (ONZ) have been widely used to treat anaerobic and protozoal infections. The residues of DMZ/ONZ persist in the water environment. The mechanisms and kinetics of hydroxyl-initiated oxidation, the primary DMZ/ONZ degradation method, were evaluated by quantum chemical methods.·OH-induced degradation of DMZ and ONZ shared many mechanistic and kinetic characteristics. The most feasible degradation pathway involved forming OH-imidazole adducts and NO2. The OH-imidazole adducts were subsequently degraded into double·OH imidazole intermediates. The rate coefficients for·OH degradation of DMZ and ONZ were 4.32 × 109 M-1 s-1 and 4.42 × 109 M-1 s-1 at 298 K, respectively. The lifetimes of DMZ and ONZ treated with·OH at concentrations of 10-9-10-18 mol L-1 at 298 K were τDMZ = 0.231-2.31 × 108 s and τONZ = 0.226-2.26 × 108 s, respectively. Toxicity assessment showed that the first degradation products of DMZ and ONZ exhibited enhanced aquatic toxicity, whereas most of the secondary degradation products were not harmful to aquatic organisms. Some of transformation products were still developmental toxicant or mutagenicity positive.
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Affiliation(s)
- Junfang Yao
- Hubei Key Laboratory of Pollutant Analysis & Reuse Technology, College of Chemistry and Chemical Engineering, Hubei Normal University, Cihu Road 11, Huangshi, Hubei 435002, PR China
| | - Yizhen Tang
- School of Environmental and municipal Engineering, Qingdao University of Technology, Fushun Road 11, Qingdao, Shandong, 266033, PR China
| | - Yunju Zhang
- Key Laboratory of Photoinduced Functional Materials, Mianyang Normal University, Mianyang, Sichuan 621000, PR China
| | - Min Ruan
- Institute of Materials Science and Engineering, Hubei Polytechnic University, Huangshi, Hubei 435002, PR China
| | - Wenzhong Wu
- College of Foreign Languages, Hubei Normal University, Cihu Road 11, Huangshi, Hubei 435002, PR China
| | - Jingyu Sun
- Hubei Key Laboratory of Pollutant Analysis & Reuse Technology, College of Chemistry and Chemical Engineering, Hubei Normal University, Cihu Road 11, Huangshi, Hubei 435002, PR China.
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28
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Wu CH, Dong CD, Chen CW, Lin YL. Mineralization of sulfamethoxazole by ozone-based and Fenton/Fenton-like-based processes. REACTION KINETICS MECHANISMS AND CATALYSIS 2022. [DOI: 10.1007/s11144-021-02124-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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29
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Berkani M, Smaali A, Kadmi Y, Almomani F, Vasseghian Y, Lakhdari N, Alyane M. Photocatalytic degradation of Penicillin G in aqueous solutions: Kinetic, degradation pathway, and microbioassays assessment. JOURNAL OF HAZARDOUS MATERIALS 2022; 421:126719. [PMID: 34364215 DOI: 10.1016/j.jhazmat.2021.126719] [Citation(s) in RCA: 58] [Impact Index Per Article: 29.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/19/2021] [Revised: 07/14/2021] [Accepted: 07/20/2021] [Indexed: 05/18/2023]
Abstract
The photocatalytic degradation of pharmaceutical micropollutants of Penicillin G (PG) was investigated in a photoreactor at a laboratory scale. The impact of type of catalyst, pH, and initial concentration of PG were studied. Maximum removal efficiency was obtained at pH = 6.8, [ZnO]0 = 0.8 g L-1, and [PG]0 = 5 mg L-1 and reaction time of 150 min. The addition of persulfate sodium (PPS) enhanced the efficiency of the photocatalytic reaction. The efficiency of photolysis process in the presence of PPS was significantly improved to 72.72% compared to the classical photocatalysis system (56.71%). Optimum concentration of PPS to completely degraded PG was found to be 500 mg L-1. The QuEChERS extraction, GC-MS/MS method, and concentration technique showed favorable performance identification of the possible mechanism of PG degradation pathway. Toxicity of PG and its by-products were evaluated using microbioassays assessment based on nine selected bacterial strains. Results confirmed the effectiveness of the implemented system and its safe use via the bacteria Bacillus subtilis, which has illustrated significant activity. Due to the high efficiency, facility benefits, and low-cost of the suggested process, the process can be considered for the degradation of various pharmaceutical contaminants in pharmaceutical industry treatment under the optimal conditions.
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Affiliation(s)
- Mohammed Berkani
- Laboratoire Biotechnologies, Ecole Nationale Supérieure de Biotechnologie, Ville Universitaire Ali Mendjeli, BP E66 25100, Constantine, Algeria
| | - Anfel Smaali
- Laboratoire Biotechnologies, Ecole Nationale Supérieure de Biotechnologie, Ville Universitaire Ali Mendjeli, BP E66 25100, Constantine, Algeria
| | - Yassine Kadmi
- LASIRE, Equipe Physico-Chimie de l'Environnement, CNRS UMR 8516, Université de Lille, Sciences et Technologies, Villeneuve d'Ascq Cedex 59655, France; Université D'Artois, IUT de Béthune, Béthune 62400, France
| | - Fares Almomani
- Department of Chemical Engineering, College of Engineering, Qatar University, P.O. Box 2713, Doha, Qatar.
| | - Yasser Vasseghian
- Department of Chemical Engineering, Quchan University of Technology, Quchan, Iran.
| | - Nadjem Lakhdari
- Laboratoire Biotechnologies, Ecole Nationale Supérieure de Biotechnologie, Ville Universitaire Ali Mendjeli, BP E66 25100, Constantine, Algeria
| | - Mohamed Alyane
- Laboratoire Biotechnologies, Ecole Nationale Supérieure de Biotechnologie, Ville Universitaire Ali Mendjeli, BP E66 25100, Constantine, Algeria
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Visca A, Rauseo J, Spataro F, Patrolecco L, Grenni P, Massini G, Mazzurco Miritana V, Barra Caracciolo A. Antibiotics and antibiotic resistance genes in anaerobic digesters and predicted concentrations in agroecosystems. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2022; 301:113891. [PMID: 34731939 DOI: 10.1016/j.jenvman.2021.113891] [Citation(s) in RCA: 13] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/22/2021] [Revised: 09/18/2021] [Accepted: 09/30/2021] [Indexed: 05/23/2023]
Abstract
In recent decades, the innovative practice of management and valorization of agrozootechnical waste as energy through anaerobic digestion (AD) has been rapidly growing. However, whether applying digestate to soil as biofertilizer can be a source of antibiotics (ABs) and antibiotic resistance genes (ARGs) has not been fully investigated so far. In this work the ARGs responsible for sulfamethoxazole (SMX) resistance (sul1, sul2), ciprofloxacin (CIP) resistance (qnrS, qepA, aac-(6')-Ib-cr) and the mobile genetic element intl1, together with the concentrations of the antibiotics SMX and CIP, were measured in several anaerobic digesters located in Central Italy. Based on these results, the concentrations of antibiotics and ARGs which can potentially reach soil through amendment with digestate were also estimated. The highest CIP and SMX concentrations were found during winter and spring in anaerobic digesters. The highest ARG abundances were found for the aac-(6')-Ib-cr and sul2 genes. The overall results showed that application of digestate to soil does not exclude AB contamination and spread of ARGs in agroecosystems, especially in the case of ciprofloxacin, owing to its high intrinsic persistence.
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Affiliation(s)
- Andrea Visca
- Water Research Institute - National Research Council (IRSA-CNR), Rome, Italy
| | - Jasmin Rauseo
- Institute of Polar Sciences - National Research Council (ISP-CNR), Rome, Italy.
| | - Francesca Spataro
- Institute of Polar Sciences - National Research Council (ISP-CNR), Rome, Italy
| | - Luisa Patrolecco
- Institute of Polar Sciences - National Research Council (ISP-CNR), Rome, Italy
| | - Paola Grenni
- Water Research Institute - National Research Council (IRSA-CNR), Rome, Italy
| | - Giulia Massini
- Department of Energy Technologies, Italian National Agency for New Technologies, Energy and Sustainable Economic Development (ENEA), Via Anguillarese 301, 00123, Rome, Italy
| | - Valentina Mazzurco Miritana
- Water Research Institute - National Research Council (IRSA-CNR), Rome, Italy; Department of Energy Technologies, Italian National Agency for New Technologies, Energy and Sustainable Economic Development (ENEA), Via Anguillarese 301, 00123, Rome, Italy
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31
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Fischer–Tropsch synthetic wastewater treatment with Fe/Mn@CH: Catalytic ozonation and process evaluation. Sep Purif Technol 2021. [DOI: 10.1016/j.seppur.2021.119274] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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32
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Synthesis of molecularly imprinted polymers for extraction of fluoroquinolones in environmental, food and biological samples. J Pharm Biomed Anal 2021; 208:114447. [PMID: 34740088 DOI: 10.1016/j.jpba.2021.114447] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/25/2021] [Revised: 10/23/2021] [Accepted: 10/25/2021] [Indexed: 12/28/2022]
Abstract
In recent years, fluoroquinolones have been found present in important water resources and food sources which compromises the food quality and availability, thereby, causing risks to the consumer. Despite the recent advancement in the development of analytical instrumentation for routine monitoring of fluoroquinolones in water, food, and biological samples, sample pre-treatment is still a major bottleneck of the analytical methods. Therefore, fast, selective, sensitive, and cost-effective sample preparation methods prior to instrumental analysis for fluoroquinolones residues in environmental, food and biological samples are increasingly important. Solid-phase extraction using different adsorbents is one of the most widely used pre-concentration/clean-up techniques for analysis of fluoroquinolones. Molecularly imprinted polymers (MIPs) serve as excellent effective adsorbent materials for selective extraction, separation, clean-up and preconcentration of various pollutants in different complex matrices. Therefore, synthesis of MIPs remains crucial for their applications in sample preparation as this offers much-needed selectivity in the extraction of compounds in complex samples. In this study, the progress made in the synthesis of MIPs for fluoroquinolones and their applications in water, food and biological samples were reviewed. The present review discusses the selection of all the elements of molecular imprinting for fluoroquinolones, polymerization processes and molecular recognition mechanisms. In conclusion, the related challenges and gaps are given to offer ideas for future research focussing on MIPs for fluoroquinolones.
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Zhang Y, Zhang M, Ye C, Feng M, Wan K, Lin W, Sharma VK, Yu X. Mechanistic insight of simultaneous removal of tetracycline and its related antibiotic resistance bacteria and genes by ferrate(VI). THE SCIENCE OF THE TOTAL ENVIRONMENT 2021; 786:147492. [PMID: 33984704 DOI: 10.1016/j.scitotenv.2021.147492] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/17/2021] [Revised: 04/28/2021] [Accepted: 04/28/2021] [Indexed: 06/12/2023]
Abstract
The emergence of antibiotics and their corresponding antibiotic resistant bacteria (ARB) and antibiotic resistance genes (ARGs) have posed great challenges to the public health. The paper demonstrates the removal of co-existing tetracycline (TC), its resistant Escherichia coli (E. coli), and ARGs (tetA and tetR) in a mixed system by applying ferrate(VI) (FeVIO42-, Fe(VI)) at pH 7.0. TC was efficiently degraded by Fe(VI), and the rapid inactivation of the resistant E. coli was found with the complete loss of culturability. The results of flow cytometry suggested that the damage of membrane integrity and respiratory activity were highly correlated with the Fe(VI) dosages. Moreover, high-dose Fe(VI) eliminates 6 log10 viable but non-culturable (VBNC) cells and even breaks the cells into fragments. ARGs in extracellular form (e-ARGs) exhibited a high sensitivity of 4.44 log10 removal to Fe(VI). Comparatively, no removal of intracellular ARGs (i-ARGs) was observed due to the multi-protection of cellular structure and rapid decay of Fe(VI). The oxidized products of TC were assessed to be less toxic than the parent compound. Overall, this study demonstrated the superior efficiency and great promise of Fe(VI) on simultaneous removal of antibiotics and their related ARB and ARGs in water.
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Affiliation(s)
- Yiting Zhang
- Key Lab of Urban Environment and Health, Institute of Urban Environment, Chinese Academy of Sciences, Xiamen 361021, China; University of Chinese Academy of Sciences, Beijing 100049, China
| | - Menglu Zhang
- College of Environmental Science and Engineering, Fujian Normal University, Fuzhou 350007, China
| | - Chengsong Ye
- College of the Environment and Ecology, Xiamen University, Xiamen 361102, China
| | - Mingbao Feng
- College of the Environment and Ecology, Xiamen University, Xiamen 361102, China
| | - Kun Wan
- College of the Environment and Ecology, Xiamen University, Xiamen 361102, China
| | - Wenfang Lin
- Key Lab of Urban Environment and Health, Institute of Urban Environment, Chinese Academy of Sciences, Xiamen 361021, China
| | - Virender K Sharma
- Department of Environmental and Occupational Health, School of Public Health, Texas A&M University, College Station, TX 77843, USA.
| | - Xin Yu
- College of the Environment and Ecology, Xiamen University, Xiamen 361102, China.
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34
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Li B, Guo R, Tian J, Wang Z, Qu R. New Findings of Ferrate(VI) Oxidation Mechanism from Its Degradation of Alkene Imidazole Ionic Liquids. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2021; 55:11733-11744. [PMID: 34369153 DOI: 10.1021/acs.est.1c03348] [Citation(s) in RCA: 21] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
Chemical reactivity, kinetics, degradation pathways and mechanisms, and ecotoxicity of the oxidation of 1-vinyl-3-ethylimidazolium bromide ([VEIm]Br), the most common alternative to organic solvents, by Fe(VI) (HFeO4-) were studied by lab experiments and theoretical calculations. Results show that Fe(VI) can efficiently remove VEIm through the dioxygen transfer-hydrolysis mechanism, which has not been reported yet. The reactivity of VEIm toward Fe(VI) mainly depends on the double bonds in the side chain of VEIm. The second-order rate constant for VEIm was 629.45 M-1 s-1 at pH 7.0 and 25 °C. Typical water constituents, except for SO32-, Cl-, and Cu2+, had no obvious effects on the oxidation. The oxidation products were determined by high-performance liquid chromatography hybrid quadrupole time-of-flight mass spectrometry, which proves that there were interactions between the oxidation intermediates of the anion and cation parts of [VEIm]Br during the degradation process. The structures of related products and oxidation mechanisms were further rationalized by theoretical calculations. The ecotoxicity of products from the three oxidation pathways all showed a trend of increase after the initial decrease. We hope that the findings of this work can give researchers some new inspirations on Fe(VI) degradation of other alkene-containing contaminants.
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Affiliation(s)
- Beibei Li
- State Key Laboratory of Pollution Control and Resources Reuse, School of the Environment, Nanjing University, Nanjing, Jiangsu 210023, P.R. China
| | - Ruixue Guo
- State Key Laboratory of Pollution Control and Resources Reuse, School of the Environment, Nanjing University, Nanjing, Jiangsu 210023, P.R. China
| | - Jie Tian
- State Key Laboratory of Pollution Control and Resources Reuse, School of the Environment, Nanjing University, Nanjing, Jiangsu 210023, P.R. China
| | - Zunyao Wang
- State Key Laboratory of Pollution Control and Resources Reuse, School of the Environment, Nanjing University, Nanjing, Jiangsu 210023, P.R. China
| | - Ruijuan Qu
- State Key Laboratory of Pollution Control and Resources Reuse, School of the Environment, Nanjing University, Nanjing, Jiangsu 210023, P.R. China
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Li J, Xue Q, Chen T, Liu F, Wang Q, Chang C, Lu X, Zhou T, Niwa O. The influence mechanism of the molecular structure on the peak current and peak potential in electrochemical detection of typical quinolone antibiotics. Phys Chem Chem Phys 2021; 23:13873-13877. [PMID: 34110338 DOI: 10.1039/d1cp01358k] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
Antibiotic pollution in water has become an increasingly serious problem, posing a potentially huge threat to human health. Ofloxacin (OFL), norfloxacin (NOR), and enoxacin (ENX) are typical broad-spectrum quinolone antibiotics, which are frequently detected in various water environments. An electrochemical sensor is a rapid and effective tool to detect antibiotics in the aquatic environment. The molecular structure of target pollutants is an important factor affecting the detection performance of electrochemical sensors. Based on the electrochemical detection results of antibiotics (OFL, NOR, and ENX), we first used the molecular structure analysis method based on quantum chemistry to accurately identify the electronegativity and the electrocatalytic degree of the oxidizable (and non-oxidizable) functional groups of pollutants. We also clarified the influence mechanism of the molecular structure on the peak current and peak potential. These results can provide theoretical support for rapidly selecting electrodes with a suitable electrochemical window to efficiently detect trace organic pollutants (such as antibiotics) in water based on the molecular structure of the target pollutant.
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Affiliation(s)
- Jiawei Li
- MOE Key Laboratory of Groundwater Circulation and Environmental Evolution, China University of Geosciences (Beijing), Beijing 100083, P. R. China. and Aerospace Seahawk Electromechanical Technology Research Institute Co., Ltd, 100074, Beijing, China and Beijing Jinghang Institute of Computing and Communication, 100074, China
| | - Qiang Xue
- MOE Key Laboratory of Groundwater Circulation and Environmental Evolution, China University of Geosciences (Beijing), Beijing 100083, P. R. China. and Beijing Key Laboratory of Water Resources and Environmental Engineering, School of Water Resources and Environment, China University of Geosciences (Beijing), Beijing 100083, P. R. China
| | - Tao Chen
- MOE Key Laboratory of Groundwater Circulation and Environmental Evolution, China University of Geosciences (Beijing), Beijing 100083, P. R. China. and Beijing Key Laboratory of Water Resources and Environmental Engineering, School of Water Resources and Environment, China University of Geosciences (Beijing), Beijing 100083, P. R. China
| | - Fei Liu
- MOE Key Laboratory of Groundwater Circulation and Environmental Evolution, China University of Geosciences (Beijing), Beijing 100083, P. R. China. and Beijing Key Laboratory of Water Resources and Environmental Engineering, School of Water Resources and Environment, China University of Geosciences (Beijing), Beijing 100083, P. R. China
| | - Qun Wang
- MOE Key Laboratory of Groundwater Circulation and Environmental Evolution, China University of Geosciences (Beijing), Beijing 100083, P. R. China. and Beijing Key Laboratory of Water Resources and Environmental Engineering, School of Water Resources and Environment, China University of Geosciences (Beijing), Beijing 100083, P. R. China
| | - Chunwen Chang
- MOE Key Laboratory of Groundwater Circulation and Environmental Evolution, China University of Geosciences (Beijing), Beijing 100083, P. R. China. and Beijing Key Laboratory of Water Resources and Environmental Engineering, School of Water Resources and Environment, China University of Geosciences (Beijing), Beijing 100083, P. R. China
| | - Xiaohua Lu
- National Institute of Metrology, No. 18, Bei San Huan Dong Lu, 100022 Beijing, China
| | - Taogeng Zhou
- Beijing Institute of Technology, No. 5, South Zhongguancun Street, 100081 Beijing, China
| | - Osamu Niwa
- Saitama Institute of Technology, 1690, Fusaiji, Fukaya, Saitama 369-0293, Japan
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Zhu H, Yang B, Yang J, Yuan Y, Zhang J. Persulfate-enhanced degradation of ciprofloxacin with SiC/g-C 3N 4 photocatalyst under visible light irradiation. CHEMOSPHERE 2021; 276:130217. [PMID: 34088097 DOI: 10.1016/j.chemosphere.2021.130217] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/24/2021] [Revised: 03/04/2021] [Accepted: 03/06/2021] [Indexed: 06/12/2023]
Abstract
SiC/g-C3N4 composite (SCN) showed the potential for photocatalytic degradation of synthetic dyes, it is deserved to study whether it is effective for the photocatalytic degradation of ciprofloxacin (CIP). In this work, persulfate-enhanced CIP degradation was investigated with SCN under visible light irradiation. The results showed that the degradation efficiency of 10 mg L-1 CIP could reach 95% for 30 min under the conditions of 0.4 g L-1 SCN, 2 mM persulfate (PS) and solution initial pH 6. The degradation process abided by pseudo first-order kinetic equation, and the observed rate constant (kobs) with SCN/PS (0.132 min-1) was 13 times of that with SCN (0.0102 min-1), and twice of that with g-C3N4/PS (0.0649 min-1). The quenching experiments and electron paramagnetic resonance analysis indicated that O2-· and 1O2 played the main role and other active species (e.g., h+, SO4-· and ·OH) also participated in CIP degradation. The possible degradation pathways were proposed through identifying the intermediate products, and the main reactions may include the ring opening of piperazine, decarbonylation, decarboxylation and defluorination. Bacterial toxicity test showed that the toxicity of the reaction solution decreased dramatically after 30 min degradation. Overall, this work could provide an efficient and environmentally friendly technology for eliminating CIP.
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Affiliation(s)
- Hongqing Zhu
- College of Resources and Environment, Southwest University, Chongqing Key Laboratory of Agricultural Resources and Environment, Chongqing, 400715, PR China; School of Environment and Quality Test, Chongqing Chemical Industry Vocational College, Chongqing, 401228, China
| | - Bing Yang
- School of Environment and Quality Test, Chongqing Chemical Industry Vocational College, Chongqing, 401228, China
| | - Jingjing Yang
- School of Environment and Quality Test, Chongqing Chemical Industry Vocational College, Chongqing, 401228, China.
| | - Ying Yuan
- School of Environment and Quality Test, Chongqing Chemical Industry Vocational College, Chongqing, 401228, China
| | - Jinzhong Zhang
- College of Resources and Environment, Southwest University, Chongqing Key Laboratory of Agricultural Resources and Environment, Chongqing, 400715, PR China.
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Wang Z, Cai X, Xie X, Li S, Zhang X, Wang Z. Visible-LED-light-driven photocatalytic degradation of ofloxacin and ciprofloxacin by magnetic biochar modified flower-like Bi 2WO 6: The synergistic effects, mechanism insights and degradation pathways. THE SCIENCE OF THE TOTAL ENVIRONMENT 2021; 764:142879. [PMID: 33129540 DOI: 10.1016/j.scitotenv.2020.142879] [Citation(s) in RCA: 41] [Impact Index Per Article: 13.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/12/2020] [Revised: 09/21/2020] [Accepted: 10/04/2020] [Indexed: 05/22/2023]
Abstract
Bi2WO6 possesses good stability but poor photocatalytic activity under visible light. Herein, the coupling of Bi2WO6, Fe3O4 and biochar (Bi2WO6/Fe3O4/BC) was investigated to enhance the photocatalytic performance of Bi2WO6 through facile hydrothermal method, which almost completely degraded ofloxacin (OFL) and ciprofloxacin (CIP) within 30 min under energy-saving visible LED irradiation. The superior photocatalytic activity of Bi2WO6/Fe3O4/BC was ascribed to the stronger visible light adsorption capacity and the lower recombination of electron-hole pairs. O2- played a major role during the photocatalytic reaction. The characterization results suggested that the introduction of biochar avoided the agglomeration of Bi2WO6 microspheres and Fe3O4 nanoparticles, at the same time, the biochar participated in OFL and CIP photodegradation by consuming different oxygen-containing functional groups. In order to further evaluate the application potential of Bi2WO6/Fe3O4/BC, the effects of environment factors and the application in different actual water were carefully investigated. Various transformation products and the possible degradation pathways of OFL and CIP were analyzed based on high resolution mass spectrometry (HRMS) results, moreover, the toxicity evaluation results of Escherichia coli indicated these intermediates products were less toxic compared OFL and CIP. Overall, Bi2WO6/Fe3O4/BC can provide a potential way for the application of photocatalytic technology in ambient wastewater purification.
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Affiliation(s)
- Zirun Wang
- College of Earth and Environmental Sciences, Lanzhou University, Lanzhou 730000, Key Laboratory for Environmental Pollution Prediction and Control, Gansu Province, China
| | - Xuewei Cai
- College of Earth and Environmental Sciences, Lanzhou University, Lanzhou 730000, Key Laboratory for Environmental Pollution Prediction and Control, Gansu Province, China
| | - Xiaoyun Xie
- College of Earth and Environmental Sciences, Lanzhou University, Lanzhou 730000, Key Laboratory for Environmental Pollution Prediction and Control, Gansu Province, China.
| | - Shan Li
- College of Earth and Environmental Sciences, Lanzhou University, Lanzhou 730000, Key Laboratory for Environmental Pollution Prediction and Control, Gansu Province, China
| | - Xiaoli Zhang
- College of Earth and Environmental Sciences, Lanzhou University, Lanzhou 730000, Key Laboratory for Environmental Pollution Prediction and Control, Gansu Province, China
| | - Zhaowei Wang
- College of Earth and Environmental Sciences, Lanzhou University, Lanzhou 730000, Key Laboratory for Environmental Pollution Prediction and Control, Gansu Province, China
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Peng G, Qi C, Wang X, Zhou L, He Q, Zhou W, Chen L. Activation of peroxymonosulfate by calcined electroplating sludge for ofloxacin degradation. CHEMOSPHERE 2021; 266:128944. [PMID: 33257045 DOI: 10.1016/j.chemosphere.2020.128944] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/25/2020] [Revised: 11/04/2020] [Accepted: 11/07/2020] [Indexed: 06/12/2023]
Abstract
Developing cost-effective metal/metal oxides for peroxymonosulfate (PMS) activation remains a key issue in the sulfate radical based advanced oxidation process. In this work, electroplating sludge (ES), a transition metal-rich byproduct, was anaerobic calcined and characterized. Then, calcined electroplating sludge (CES) was applied as PMS activator for degradation of ofloxacin (OFL) and CES/PMS system exhibited a nearly 90% of OFL removal in 60 min. In addition, effect of CES, PMS, the initial pH and water constituents (chloride, bicarbonate, natural organic matter (NOM) and water backgrounds) on OFL degradation were systematically studied. Moreover, radical quenching tests and electron spin-resonance spectroscopy studies manifested that both SO4- and HO were the ruling reactive oxygen species. X-ray photoelectron spectroscopy results of the fresh and used CES demonstrated that the PMS activation mainly occur in the transformation from Fe3+ (Cu2+) to Fe2+ (Cu+). Furthermore, liquid chromatography coupled with ion trap time-of-flight mass spectrometry was used to illustrate the possible degradation pathway of OFL. Moreover, CES showed excellent stability and reusability during reaction. This work points out a new way for value-added reuse for ES as a cost-efficient activator of PMS for organic contaminant removal.
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Affiliation(s)
- Guilong Peng
- State Key Laboratory of Silkworm Genome Biology, Key Laboratory of Sericultural Biology and Genetic Breeding, Ministry of Agriculture and Rural Affairs, College of Sericulture, Textile and Biomass Sciences, Southwest University, Chongqing, 400715, China
| | - Chengdu Qi
- School of Environment, Nanjing Normal University, Nanjing, 210023, China.
| | - Xiachao Wang
- State Key Laboratory of Silkworm Genome Biology, Key Laboratory of Sericultural Biology and Genetic Breeding, Ministry of Agriculture and Rural Affairs, College of Sericulture, Textile and Biomass Sciences, Southwest University, Chongqing, 400715, China
| | - Linli Zhou
- State Key Laboratory of Silkworm Genome Biology, Key Laboratory of Sericultural Biology and Genetic Breeding, Ministry of Agriculture and Rural Affairs, College of Sericulture, Textile and Biomass Sciences, Southwest University, Chongqing, 400715, China
| | - Qiang He
- Key Laboratory of Eco-Environment of Three Gorges Region of Ministry of Education, Chongqing University, Chongqing, 400045, China.
| | - Wei Zhou
- State Key Laboratory of Silkworm Genome Biology, Key Laboratory of Sericultural Biology and Genetic Breeding, Ministry of Agriculture and Rural Affairs, College of Sericulture, Textile and Biomass Sciences, Southwest University, Chongqing, 400715, China
| | - Lin Chen
- State Key Laboratory of Silkworm Genome Biology, Key Laboratory of Sericultural Biology and Genetic Breeding, Ministry of Agriculture and Rural Affairs, College of Sericulture, Textile and Biomass Sciences, Southwest University, Chongqing, 400715, China
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Thomas N, Dionysiou DD, Pillai SC. Heterogeneous Fenton catalysts: A review of recent advances. JOURNAL OF HAZARDOUS MATERIALS 2021; 404:124082. [PMID: 33069994 PMCID: PMC7530584 DOI: 10.1016/j.jhazmat.2020.124082] [Citation(s) in RCA: 194] [Impact Index Per Article: 64.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/11/2020] [Revised: 09/18/2020] [Accepted: 09/21/2020] [Indexed: 05/17/2023]
Abstract
Heterogeneous Fenton catalysts are emerging as excellent materials for applications related to water purification. In this review, recent trends in the synthesis and application of heterogeneous Fenton catalysts for the abatement of organic pollutants and disinfection of microorganisms are discussed. It is noted that as the complexity of cell wall increases, the resistance level towards various disinfectants increases and it requires either harsh conditions or longer exposure time for the complete disinfection. In case of viruses, enveloped viruses (e.g. SARS-CoV-2) are found to be more susceptible to disinfectants than the non-enveloped viruses. The introduction of plasmonic materials with the Fenton catalysts broadens the visible light absorption efficiency of the hybrid material, and incorporation of semiconductor material improves the rate of regeneration of Fe(II) from Fe(III). A special emphasis is given to the use of Fenton catalysts for antibacterial applications. Composite materials of magnetite and ferrites remain a champion in this area because of their easy separation and reuse, owing to their magnetic properties. Iron minerals supported on clay materials, perovskites, carbon materials, zeolites and metal-organic frameworks (MOFs) dramatically increase the catalytic degradation rate of contaminants by providing high surface area, good mechanical stability, and improved electron transfer. Moreover, insights to the zero-valent iron and its capacity to remove a wide range of organic pollutants, heavy metals and bacterial contamination are also discussed. Real world applications and the role of natural organic matter are summarised. Parameter optimisation (e.g. light source, dosage of catalyst, concentration of H2O2 etc.), sustainable models for the reusability or recyclability of the catalyst and the theoretical understanding and mechanistic aspects of the photo-Fenton process are also explained. Additionally, this review summarises the opportunities and future directions of research in the heterogeneous Fenton catalysis.
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Affiliation(s)
- Nishanth Thomas
- Nanotechnology and Bio-engineering Research Group, Department of Environmental Science, Institute of Technology Sligo, Sligo, Ireland; Centre for Precision Engineering, Materials and Manufacturing Research (PEM), Institute of Technology Sligo, Sligo, Ireland
| | - Dionysios D Dionysiou
- Environmental Engineering and Science Program, Department of Chemical and Environmental Engineering, University of Cincinnati, Cincinnati, OH, USA
| | - Suresh C Pillai
- Nanotechnology and Bio-engineering Research Group, Department of Environmental Science, Institute of Technology Sligo, Sligo, Ireland; Centre for Precision Engineering, Materials and Manufacturing Research (PEM), Institute of Technology Sligo, Sligo, Ireland.
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40
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Chen Z, Wan Q, Wen G, Luo X, Xu X, Wang J, Li K, Huang T, Ma J. Effect of borate buffer on organics degradation with unactivated peroxymonosulfate: Influencing factors and mechanisms. Sep Purif Technol 2021. [DOI: 10.1016/j.seppur.2020.117841] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
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41
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Huang X, Yang W, Zhang G, Yan L, Zhang Y, Jiang A, Xu H, Zhou M, Liu Z, Tang H, Dionysiou DD. Alternative synthesis of nitrogen and carbon co-doped TiO2 for removing fluoroquinolone antibiotics in water under visible light. Catal Today 2021. [DOI: 10.1016/j.cattod.2019.10.034] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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42
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Wang J, Li S, Zhu Y, Guo J, Liu J, He B. Targeted eco-pharmacovigilance as an optimized management strategy for adverse effects of pharmaceuticals in the environment. ENVIRONMENTAL TOXICOLOGY AND PHARMACOLOGY 2021; 82:103565. [PMID: 33321209 DOI: 10.1016/j.etap.2020.103565] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/15/2020] [Revised: 11/25/2020] [Accepted: 12/09/2020] [Indexed: 05/21/2023]
Abstract
From a perspective of drug administration, eco-pharmacovigilance (EPV) has been proposed as a new approach to prevent the environmental risks posed by pharmaceutical emerging contaminants. However, it is impracticable to practice unitary and rigor EPV process for all the pharmaceutical substances with complex and diversified chemical, biological or toxicological properties. We proposed the "targeted EPV" that is the science and activities associated with the targeted detection, evaluation, understanding, and prevention of adverse effects of high-priority hazardous pharmaceuticals in the environment, especially focusing on the control of main anthropogenic sources of pharmaceutical emission among key stakeholders in high-risk areas could be used as an optimized management strategy for pharmaceutical pollution. "Targeted EPV" implementation should focus on the targeted monitoring of the occurrence of high-priority pharmaceuticals in environmental samples, the targeted reporting of over-standard discharge, the targeted management for main emission sources, the targeted legislation and researches on high-priority pharmaceutical pollutants, as well as the targeted educational strategies for specific key populations.
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Affiliation(s)
- Jun Wang
- Department of Pharmacology, College of Medicine, Wuhan University of Science and Technology, Wuhan, China
| | - Shulan Li
- Department of Pharmacology, College of Medicine, Wuhan University of Science and Technology, Wuhan, China
| | - Yujie Zhu
- Department of Pharmacology, College of Medicine, Wuhan University of Science and Technology, Wuhan, China
| | - Jie Guo
- Department of Pharmacology, College of Medicine, Wuhan University of Science and Technology, Wuhan, China
| | - Juan Liu
- Department of Pharmacology, College of Medicine, Wuhan University of Science and Technology, Wuhan, China
| | - Bingshu He
- Hubei Province Women and Children Hospital, Wuhan, China.
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43
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Zhang X, Feng M, Luo C, Nesnas N, Huang CH, Sharma VK. Effect of Metal Ions on Oxidation of Micropollutants by Ferrate(VI): Enhancing Role of Fe IV Species. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2021; 55:623-633. [PMID: 33326216 DOI: 10.1021/acs.est.0c04674] [Citation(s) in RCA: 48] [Impact Index Per Article: 16.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
This paper investigated the oxidation of recalcitrant micropollutants [i.e., atenolol (ATL), flumequine, aspartame, and diatrizoic acid] by combining ferrate(VI) (FeVIO42-, FeVI) with a series of metal ions [i.e., Fe(III), Ca(II), Al(III), Sc(III), Co(II), and Ni(II)]. An addition of Fe(III) to FeVI enhanced the oxidation of micropollutants compared solely to FeVI. The enhanced oxidation of studied micropollutants increased with increasing [Fe(III)]/[FeVI] to 2.0. The complete conversion of phenyl methyl sulfoxide (PMSO), as a probe agent, to phenyl methyl sulfone (PMSO2) by the FeVI-Fe(III) system suggested that the highly reactive intermediate FeIV/FeV species causes the increased oxidation of all four micropollutants. A kinetic modeling of the oxidation of ATL demonstrated that the major species causing the increase in ATL removal was FeIV, which had an estimated rate constant as (6.3 ± 0.2) × 104 M-1 s-1, much higher than that of FeVI [(5.0 ± 0.4) × 10-1 M-1 s-1]. Mechanisms of the formed oxidation products of ATL by FeIV, which included aromatic and/or benzylic oxidation, are delineated. The presence of natural organic matter significantly inhibited the removal of four pollutants by the FeVI-Fe(III) system. The enhanced effect of the FeVI-Fe(III) system was also seen in the oxidation of the micropollutants in river water and lake water.
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Affiliation(s)
- Xianbing Zhang
- Department of Environmental and Occupational Health, School of Public Health, Texas A&M University, College Station, Texas 77843, United States
- National Inland Waterway Regulation Engineering Research Center, Chongqing Jiaotong University, Nan'an District, Chongqing 400074, China
| | - Mingbao Feng
- Department of Environmental and Occupational Health, School of Public Health, Texas A&M University, College Station, Texas 77843, United States
| | - Cong Luo
- School of Civil and Environmental Engineering, Georgia Institute of Technology, Atlanta, Georgia 30332, United States
| | - Nasri Nesnas
- Department of Biomedical and Chemical Engineering and Sciences, Florida Institute of Technology, Melbourne, Florida 32901, United States
| | - Ching-Hua Huang
- School of Civil and Environmental Engineering, Georgia Institute of Technology, Atlanta, Georgia 30332, United States
| | - Virender K Sharma
- Department of Environmental and Occupational Health, School of Public Health, Texas A&M University, College Station, Texas 77843, United States
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Chaturvedi P, Giri BS, Shukla P, Gupta P. Recent advancement in remediation of synthetic organic antibiotics from environmental matrices: Challenges and perspective. BIORESOURCE TECHNOLOGY 2021; 319:124161. [PMID: 33007697 DOI: 10.1016/j.biortech.2020.124161] [Citation(s) in RCA: 49] [Impact Index Per Article: 16.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/15/2020] [Revised: 09/17/2020] [Accepted: 09/18/2020] [Indexed: 06/11/2023]
Abstract
Continuous discharge and persistence of antibiotics in aquatic ecosystem is identified as emerging environment health hazard. Partial degradation and inappropriate disposal induce appearance of diverse antibiotic resistant genes (ARGs) and bacteria, hence their execution is imperative. Conventional methods including waste water treatment plants (WWTPs) are found ineffective for the removal of recalcitrant antibiotics. Therefore, constructive removal of antibiotics from environmental matrices and other alternatives have been discussed. This review summarizes present scenario and removal of micro-pollutants, antibiotics from environment. Various strategies including physicochemical, bioremediation, use of bioreactor, and biocatalysts are recognized as potent antibiotic removal strategies. Microbial Fuel Cells (MFCs) and biochar have emerged as promising biodegradation processes due to low cost, energy efficient and environmental benignity. With higher removal rate (20-50%) combined/ hybrid processes seems to be more efficient for permanent and sustainable elimination of reluctant antibiotics.
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Affiliation(s)
- Preeti Chaturvedi
- Aquatic Toxicology Laboratory, Environmental Toxicology Group, Council of Scientific and Industrial Research-Indian Institute of Toxicology Research (CSIR-IITR), Vishvigyan Bhawan, 31, M.G. Marg, Lucknow 226001, Uttar Pradesh, India; Department of Biotechnology, National Institute of Technology-Raipur, G.E. Road, Raipur 492010, Chhattisgarh, India.
| | - Balendu Shekher Giri
- Aquatic Toxicology Laboratory, Environmental Toxicology Group, Council of Scientific and Industrial Research-Indian Institute of Toxicology Research (CSIR-IITR), Vishvigyan Bhawan, 31, M.G. Marg, Lucknow 226001, Uttar Pradesh, India
| | - Parul Shukla
- Aquatic Toxicology Laboratory, Environmental Toxicology Group, Council of Scientific and Industrial Research-Indian Institute of Toxicology Research (CSIR-IITR), Vishvigyan Bhawan, 31, M.G. Marg, Lucknow 226001, Uttar Pradesh, India
| | - Pratima Gupta
- Department of Biotechnology, National Institute of Technology-Raipur, G.E. Road, Raipur 492010, Chhattisgarh, India
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Fang L, Miao Y, Wei D, Zhang Y, Zhou Y. Efficient removal of norfloxacin in water using magnetic molecularly imprinted polymer. CHEMOSPHERE 2021; 262:128032. [PMID: 33182153 DOI: 10.1016/j.chemosphere.2020.128032] [Citation(s) in RCA: 53] [Impact Index Per Article: 17.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/13/2020] [Revised: 08/09/2020] [Accepted: 08/13/2020] [Indexed: 05/17/2023]
Abstract
Effective and practical materials are important for the pollution control in the environment. A novel magnetic molecularly imprinted polymer (CoFe2O4@TiO2-MMIP) was prepared based on the surface molecular imprinting technology combined with photocatalytic degradation and magnetic separation. The adsorption rate constant and maximum adsorption capacity of CoFe2O4@TiO2-MMIP are 0.21 g mg-1 min-1 and 14.26 mg g-1, respectively. The effects of experimental factors on the adsorption properties of the magnetic molecularly imprinted polymer were investigated. CoFe2O4@TiO2-MMIP had selective adsorption ability towards fluoroquinolones. The adsorption efficiency was closely related to the molecular structure, molecular weight, polarity and functional groups of the target contaminant and the removal efficiency of norfloxacin was affected by another substance obviously in binary adsorption system. The adsorption-photocatalytic recycling experiment verified that CoFe2O4@TiO2-MMIP could simultaneously complete the degradation of pollutants and in-situ regeneration, indicating good reusability. This material with selective adsorption and photocatalytic regeneration would have substantial attraction for application in the removal of fluoroquinolones.
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Affiliation(s)
- Lei Fang
- College of Civil Engineering and Architecture, Zhejiang University, Key Laboratory of Drinking Water Safety and Distribution Technology of Zhejiang Province, Hangzhou, 310058, China.
| | - Yunxia Miao
- College of Civil Engineering and Architecture, Zhejiang University, Key Laboratory of Drinking Water Safety and Distribution Technology of Zhejiang Province, Hangzhou, 310058, China.
| | - Dong Wei
- College of Civil Engineering and Architecture, Zhejiang University, Key Laboratory of Drinking Water Safety and Distribution Technology of Zhejiang Province, Hangzhou, 310058, China.
| | - Yan Zhang
- College of Civil Engineering and Architecture, Zhejiang University, Key Laboratory of Drinking Water Safety and Distribution Technology of Zhejiang Province, Hangzhou, 310058, China.
| | - Yongchao Zhou
- College of Civil Engineering and Architecture, Zhejiang University, Key Laboratory of Drinking Water Safety and Distribution Technology of Zhejiang Province, Hangzhou, 310058, China.
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46
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Ruan ZY, Lu YF, Lv X, Wu JZ, Ou YC, Cai YP. Synthesis of a Eu complex based on benzonitrile hydrolysis as the first luminescent probe for clinafloxacin. CrystEngComm 2021. [DOI: 10.1039/d1ce00315a] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
[Eu2(pip)2(PhCOO)6] synthesized via hydrolysis of benzonitrile shows specific and quantitative photoluminescence quenching by clinafloxacin.
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Affiliation(s)
- Zhong-Yu Ruan
- School of Chemistry
- South China Normal University
- Guangzhou 510006
- China
| | - Yong-Fang Lu
- School of Chemistry
- South China Normal University
- Guangzhou 510006
- China
| | - Xi Lv
- School of Chemistry
- South China Normal University
- Guangzhou 510006
- China
| | - Jian-Zhong Wu
- School of Chemistry
- South China Normal University
- Guangzhou 510006
- China
- Guangzhou Key Laboratory of Materials for Energy Conversion and Storage
| | - Yong-Cong Ou
- School of Chemistry
- South China Normal University
- Guangzhou 510006
- China
| | - Yue-Peng Cai
- School of Chemistry
- South China Normal University
- Guangzhou 510006
- China
- Guangzhou Key Laboratory of Materials for Energy Conversion and Storage
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47
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Xian Z, Liang S, Jin X, Tian H, Ling J, Wang C. Application of Fe III-TAML/H 2O 2 system for treatment of fluoroquinolone antibiotics. J Environ Sci (China) 2021; 99:110-118. [PMID: 33183688 DOI: 10.1016/j.jes.2020.06.006] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2020] [Revised: 06/03/2020] [Accepted: 06/05/2020] [Indexed: 06/11/2023]
Abstract
Over the recent past, fluoroquinolone antibiotics (FQs) have raised extensive attention due to their potential to induce the formation of resistance genes and "superbugs", thus various advanced oxidation techniques have been developed to eliminate their release into the environment. In the present study, the prototype tetraamido macrocyclic ligand (FeIII-TAML)/hydrogen peroxide (H2O2) system is employed to degrade FQs (i.e., norfloxacin and ciprofloxacin) over a wide pH range (i.e., pH 6-10), and the reaction rate increases with the increase in pH level. The effect of dosage of FeIII-TAML and H2O2 on the degradation of FQs is evaluated, and the reaction rate is linearly correlated with the added amount of chemicals. Moreover, the impact of natural organic matters (NOM) on the removal of FQs is investigated, and the degradation kinetics show that both NOM type and experimental concentration exhibit negligible influence on the oxidative degradation of selected antibiotics. Based on the results of liquid chromatography-high resolution mass spectrometry and theoretical calculations, the reaction sites and pathways of FQs by FeIII-TAML/H2O2 system are further predicted and elucidated.
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Affiliation(s)
- Zeyu Xian
- State Key Laboratory of Pollution Control and Resource Reuse, School of the Environment, Nanjing University, Nanjing 210023, China
| | - Sijia Liang
- State Key Laboratory of Pollution Control and Resource Reuse, School of the Environment, Nanjing University, Nanjing 210023, China
| | - Xin Jin
- State Key Laboratory of Pollution Control and Resource Reuse, School of the Environment, Nanjing University, Nanjing 210023, China
| | - Haoting Tian
- Shandong Provincial Key Laboratory of Water and Soil Conservation and Environmental Protection, College of Resource and Environment, Linyi University, Linyi 276005, China.
| | - Jingyi Ling
- State Key Laboratory of Pollution Control and Resource Reuse, School of the Environment, Nanjing University, Nanjing 210023, China
| | - Chao Wang
- State Key Laboratory of Pollution Control and Resource Reuse, School of the Environment, Nanjing University, Nanjing 210023, China.
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48
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Wang J, Lin W, Hu H, Liu C, Cai Q, Zhou S, Kong Y. Engineering Z-system hybrids of 0D/2D F-TiO2 quantum dots/g-C3N4 heterostructures through chemical bonds with enhanced visible-light photocatalytic performance. NEW J CHEM 2021. [DOI: 10.1039/d0nj05500j] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
A Z-system hybrid of F-TiO2 quantum dots/g-C3N4 nanosheets with an effective pathway (C–O bond) for charge transfer and selective recombination was constructed.
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Affiliation(s)
- Jian Wang
- State Key Laboratory of Materials-Oriented Chemical Engineering
- College of Chemical Engineering
- Nanjing Tech University
- Nanjing 210009
- P. R. China
| | - Wei Lin
- State Key Laboratory of Materials-Oriented Chemical Engineering
- College of Chemical Engineering
- Nanjing Tech University
- Nanjing 210009
- P. R. China
| | - Hao Hu
- State Key Laboratory of Materials-Oriented Chemical Engineering
- College of Chemical Engineering
- Nanjing Tech University
- Nanjing 210009
- P. R. China
| | - Chunxia Liu
- State Key Laboratory of Materials-Oriented Chemical Engineering
- College of Chemical Engineering
- Nanjing Tech University
- Nanjing 210009
- P. R. China
| | - Qiong Cai
- State Key Laboratory of Materials-Oriented Chemical Engineering
- College of Chemical Engineering
- Nanjing Tech University
- Nanjing 210009
- P. R. China
| | - Shijian Zhou
- State Key Laboratory of Materials-Oriented Chemical Engineering
- College of Chemical Engineering
- Nanjing Tech University
- Nanjing 210009
- P. R. China
| | - Yan Kong
- State Key Laboratory of Materials-Oriented Chemical Engineering
- College of Chemical Engineering
- Nanjing Tech University
- Nanjing 210009
- P. R. China
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Green magnetic nanomaterial as antibiotic release vehicle: The release of pefloxacin and ofloxacin. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2020; 118:111439. [PMID: 33255032 DOI: 10.1016/j.msec.2020.111439] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/25/2020] [Revised: 08/18/2020] [Accepted: 08/20/2020] [Indexed: 01/05/2023]
Abstract
The increased efflux of fluoroquinolone antibiotics to the environment has become of worldwide concern due to their potential to disturb aquatic ecosystems. How to improve the antibiotic release is a challenge. In this work, magnetic Fe3O4 nanoparticles as a drug release vehicle were prepared using the green synthesis method. It is a simple and environmental friendly technique that employs the plant extract as a reducing and coating agent during the preparation process. Antibiotics ofloxacin and pefloxacin served as the drug model and the drug release behavior was tested at various pH levels. The release efficiency of ofloxacin from Fe3O4 reached 99.6% and for pefloxacin it was 57.0% at 310 K after 120 h (pH 10.5). The scanning electron microscope images show that Fe3O4 particles ranged in size from 10 to 40 nm and magnetism testing indicated that saturation magnetization was 58.7 emu/g. Furthermore, zeta potential, FTIR, UV-VIS, XRD and XPS were used to provide the evidence to support the release mechanism, where was based on the pH control. Our work clearly demonstrated that Fe3O4 nanoparticles were a potential as a targeted drug delivery system.
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Yan W, Zhang R, Ji F, Jing C. Deciphering co-catalytic mechanisms of potassium doped g-C 3N 4 in Fenton process. JOURNAL OF HAZARDOUS MATERIALS 2020; 392:122472. [PMID: 32208311 DOI: 10.1016/j.jhazmat.2020.122472] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/19/2020] [Revised: 02/29/2020] [Accepted: 03/04/2020] [Indexed: 06/10/2023]
Abstract
Conventional Fenton reaction for the pollutant removal is restricted by incomplete H2O2 decomposition due to the low efficient Fe(III)/Fe(II) cycle. In this study, the co-catalytic Fenton processes with g-C3N4 and the roles of potassium doping in the diverse mechanisms were comprehensively investigated. The degradation rate of enrofloxacin (ENR) in g-CN-3.9 %K/Fe(III)/H2O2 was 204 times higher than that in conventional Fenton reaction. This significant enhancement was ascribed to the readily formed complex between Fe(III) and K doped g-C3N4. The K doping facilitated the transfer of photoexcited e- from g-CN-3.9 %K surface to Fe(III), leading to an accelerated Fe(III) reduction to Fe(II). In addition, this complex was coordinated and oxidized by H2O2, resulting in the formation of Fe(V) which quickly degraded ENR. Without K doping, on the other hand, only O2 dominated the degradation of ENR in g-CN/Fe(III)/H2O2 due to the lack of Fe(III) complexation. This study provides a new perspective for regulating the transfer directions of the photoexcited e- with K doping in g-C3N4/Fenton coupled catalytic system for water purification.
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Affiliation(s)
- Wei Yan
- State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing, 100085, China
| | - Ru Zhang
- State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing, 100085, China; School of Municipal and Environmental Engineering, Shandong Jianzhu University, Jinan, 250101, China
| | - Feng Ji
- Shimadzu (China) Co., Ltd, China
| | - Chuanyong Jing
- State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing, 100085, China.
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