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Es'hagi M, Farbodi M, Gharbani P, Ghasemi E, Jamshidi S, Majdan-Cegincara R, Mehrizad A, Seyyedi K, Shahverdizadeh GH. A comparative review on the mitigation of metronidazole residues in aqueous media using various physico-chemical technologies. ANALYTICAL METHODS : ADVANCING METHODS AND APPLICATIONS 2024; 16:7294-7310. [PMID: 39469862 DOI: 10.1039/d4ay01502a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/30/2024]
Abstract
In the last few decades, pharmaceuticals have emerged as a new class of serious environmental pollutants. The presence of these emerging contaminants even in minimal amounts (micro- to nanograms) has side effects, and they can cause chronic toxicity to health and the environment. Furthermore, the presence of pharmaceutical contaminants in water resources leads to significant antibiotic resistance in bacteria. Hence, the removal of antibiotics from water resources is essential. Thus far, a wide range of methods, including adsorption, photodegradation, oxidation, photolysis, micro-/nanofiltration, and reverse osmosis, has been used to remove pharmaceutical contaminants from water systems. In this article, research related to the processes for the removal of metronidazole antibiotics from water and wastewater, including adsorption (carbon nanotubes (CNTs), magnetic nanocomposites, magnetic molecularly imprinted polymer (MMIP), and metal-organic frameworks), filtration, advanced oxidation processes (photocatalytic process, electrochemical advanced oxidation processes, sonolysis and sonocatalysis) and aqueous two-phase systems (ATPSs), was reviewed. Results reveal that advanced oxidation processes, especially photocatalytic and sonolysis processes, have high potential in removing MNZ (more than 90%).
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Affiliation(s)
- Moosa Es'hagi
- Department of Chemistry, Islamic Azad University, Tabriz Branch, Tabriz, Iran.
- Industrial Nanotechnology Research Center, Islamic Azad University, Tabriz Branch, Tabriz, Iran
| | - Maryam Farbodi
- Department of Chemistry, Islamic Azad University, Tabriz Branch, Tabriz, Iran.
- Industrial Nanotechnology Research Center, Islamic Azad University, Tabriz Branch, Tabriz, Iran
| | - Parvin Gharbani
- Industrial Nanotechnology Research Center, Islamic Azad University, Tabriz Branch, Tabriz, Iran
- Department of Chemistry, Islamic Azad University, Ahar Branch, Ahar, Iran.
| | - Elnaz Ghasemi
- Department of Chemistry, Islamic Azad University, Tabriz Branch, Tabriz, Iran.
- Industrial Nanotechnology Research Center, Islamic Azad University, Tabriz Branch, Tabriz, Iran
| | - Sona Jamshidi
- Department of Chemistry, Islamic Azad University, Tabriz Branch, Tabriz, Iran.
- Industrial Nanotechnology Research Center, Islamic Azad University, Tabriz Branch, Tabriz, Iran
| | - Roghayeh Majdan-Cegincara
- Department of Chemistry, Islamic Azad University, Tabriz Branch, Tabriz, Iran.
- Industrial Nanotechnology Research Center, Islamic Azad University, Tabriz Branch, Tabriz, Iran
| | - Ali Mehrizad
- Department of Chemistry, Islamic Azad University, Tabriz Branch, Tabriz, Iran.
- Industrial Nanotechnology Research Center, Islamic Azad University, Tabriz Branch, Tabriz, Iran
| | - Kambiz Seyyedi
- Department of Chemistry, Islamic Azad University, Tabriz Branch, Tabriz, Iran.
- Industrial Nanotechnology Research Center, Islamic Azad University, Tabriz Branch, Tabriz, Iran
| | - Gholam Hossein Shahverdizadeh
- Department of Chemistry, Islamic Azad University, Tabriz Branch, Tabriz, Iran.
- Industrial Nanotechnology Research Center, Islamic Azad University, Tabriz Branch, Tabriz, Iran
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Zhang SY, Shi H, Zhu MD, Jie WG, Kan LB. Synthesis, magnetic properties, biotoxicity and potential mechanism of modified nano zero-valent iron for decolorization of dye wastewater. ENVIRONMENTAL TECHNOLOGY 2024:1-14. [PMID: 38770638 DOI: 10.1080/09593330.2024.2354057] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/02/2024] [Accepted: 05/02/2024] [Indexed: 05/22/2024]
Abstract
SiO2-coated nano zero-valent iron (nZVI) has emerged as a fine material for the treatment of dye wastewater due to its large specific surface area, high surface activity, and strong reducibility. However, the magnetic properties based on which SiO2-coated nZVI (SiO2-nZVI) could effectively separate and recover from treated wastewater, and the biotoxicity analysis of degradation products of the dye wastewater treated by SiO2-nZVI remain unclear. In this study, SiO2-nZVI was synthesized using a modified one-step synthesis method. The SiO2-nZVI nanoparticles were characterized using Transmission electron microscopy, X-ray diffraction, Fourier-transform infrared spectroscopy, Fully automatic specific surface and porosity analyzer, Vibrating sample magnetometer, and Zeta potential analyzer. The removal rate of methyl orange (MO) by SiO2-nZVI composite reached 98.35% when the degradation performance of SiO2-nZVI treating MO was optimized. Since SiO2-nZVI analysed by magnetic hysteresis loops had large saturation magnetization and strong magnetic properties, SiO2-nZVI exhibited excellent ferromagnetic behaviour. The analysis of the degradation products showed that the MO treated by SiO2-nZVI was converted into a series of intermediates, resulting in reducing the toxicity of MO. The potential mechanism of MO degradated by SiO2-nZVI was speculated through degradation process and degradation kinetics analysis. Overall, the SiO2-nZVI composite may be regarded as a promising catalyst for decolorization of dye wastewater.
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Affiliation(s)
- Si-Yi Zhang
- Engineering Research Center of Agricultural Microbiology Technology, Ministry of Education & Heilongjiang Provincial Key Laboratory of Plant Genetic Engineering and Biological Fermentation Engineering for Cold Region & Key Laboratory of Microbiology, College of Heilongjiang Province & School of Life Sciences, Heilongjiang University, Harbin, People's Republic of China
| | - He Shi
- Engineering Research Center of Agricultural Microbiology Technology, Ministry of Education & Heilongjiang Provincial Key Laboratory of Plant Genetic Engineering and Biological Fermentation Engineering for Cold Region & Key Laboratory of Microbiology, College of Heilongjiang Province & School of Life Sciences, Heilongjiang University, Harbin, People's Republic of China
| | - Man-di Zhu
- Engineering Research Center of Agricultural Microbiology Technology, Ministry of Education & Heilongjiang Provincial Key Laboratory of Plant Genetic Engineering and Biological Fermentation Engineering for Cold Region & Key Laboratory of Microbiology, College of Heilongjiang Province & School of Life Sciences, Heilongjiang University, Harbin, People's Republic of China
| | - Wei-Guang Jie
- Engineering Research Center of Agricultural Microbiology Technology, Ministry of Education & Heilongjiang Provincial Key Laboratory of Plant Genetic Engineering and Biological Fermentation Engineering for Cold Region & Key Laboratory of Microbiology, College of Heilongjiang Province & School of Life Sciences, Heilongjiang University, Harbin, People's Republic of China
| | - Lian-Bao Kan
- Engineering Research Center of Agricultural Microbiology Technology, Ministry of Education & Heilongjiang Provincial Key Laboratory of Plant Genetic Engineering and Biological Fermentation Engineering for Cold Region & Key Laboratory of Microbiology, College of Heilongjiang Province & School of Life Sciences, Heilongjiang University, Harbin, People's Republic of China
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Wang X, Jiang M, Lynch I, Guo Z, Zhang P, Wu L, Ma J. Construction of urchin-like core-shell Fe/Fe 2O 3@UiO-66 hybrid for effective tetracycline reduction and photocatalytic oxidation. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2023; 336:122280. [PMID: 37573962 DOI: 10.1016/j.envpol.2023.122280] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/05/2023] [Revised: 07/15/2023] [Accepted: 07/27/2023] [Indexed: 08/15/2023]
Abstract
Although Fe/Fe2O3 has potential application compared with nanoscale zero-valent iron (nZVI), its smooth structure largely limits the catalytic performance. To address this challenge, we innovatively constructed highly efficient composite Fe/Fe2O3@UiO-66 via employing an urchin-like core-shell structure of Fe/Fe2O3 onto UiO-66 through a facile ion exchange precipitation method without inert gas protection. The characterization results show the urchin-like core-shell configuration can extend the life span of Fe0 and produce more active sites. Besides, the absorption spectrum is broadened by Fe2O3 which has narrow band gap and the high-efficiency separation of photogenerated electron-hole pairs is obtained with the load of Fe/Fe2O3. Moreover, Two-parameter pseudo-first-order decay model fits well with the reduction and adsorption of composites in the dark reaction, and a plausible pathway for tetracycline (TC) degradation is also proposed. The findings of this research provide a promising method for promoting the catalytic properties of MOF-based materials and Fe/Fe2O3.
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Affiliation(s)
- Xiangyu Wang
- Faculty of Environmental Science and Engineering, Kunming University of Science and Technology, Kunming, 650500, China; School of Geography, Earth and Environmental Sciences, University of Birmingham, Birmingham, B15 2TT, UK.
| | - Min Jiang
- Faculty of Environmental Science and Engineering, Kunming University of Science and Technology, Kunming, 650500, China
| | - Iseult Lynch
- School of Geography, Earth and Environmental Sciences, University of Birmingham, Birmingham, B15 2TT, UK
| | - Zhiling Guo
- School of Geography, Earth and Environmental Sciences, University of Birmingham, Birmingham, B15 2TT, UK
| | - Peng Zhang
- School of Geography, Earth and Environmental Sciences, University of Birmingham, Birmingham, B15 2TT, UK
| | - Lisi Wu
- School of Geography, Earth and Environmental Sciences, University of Birmingham, Birmingham, B15 2TT, UK
| | - Jun Ma
- State Key Laboratory of Urban Water Resource and Environment, School of Environment, Harbin Institute of Technology, Harbin, 150090, China
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Mazloomi S, Amarloei A, Gholami F, Haghighat GA, Badalians Gholikandi G, Nourmoradi H, Mohammadi AA, Fattahi M, Nguyen Le B. Parametric study and process modeling for metronidazole removal by rhombic dodecahedron ZIF-67 crystals. Sci Rep 2023; 13:14654. [PMID: 37669982 PMCID: PMC10480145 DOI: 10.1038/s41598-023-41724-y] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/18/2023] [Accepted: 08/30/2023] [Indexed: 09/07/2023] Open
Abstract
Metronidazole (MNZ) is an extensively used antibiotic against bacterial infections for humans and farm animals. Prevention of antibiotics discharge is essential to prevent adverse environmental and health impacts. A member of metal-organic frameworks, zeolite imidazole framework-67 with cobalt sulfate precursor (ZIF-67-SO4) and exceptional physio-chemical properties was prepared via room temperature precipitation to adsorb MNZ. The study framework was designed by Box-Behnken Design to evaluate the effect of pH, ZIF-67-SO4 dose, and contact time on adsorption efficiency. The polynomial model fitted the adsorption system indicated the optimal condition for 97% MNZ removal occurs at pH = 7, adsorbent dosage = 1 g/L, and mixing time = 60 min. The model also revealed that the removal increased with contact time and decreased at strong pH. Equilibrium and kinetic study also indicated the adsorption of MNZ followed the intra-particle diffusion model and the Langmuir isotherm model with a qmax = 63.03 mg/g. The insignificant loss in removal efficacy in use-reuse adsorption cycles reflected the practical viability of ZIF-67-SO4.
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Affiliation(s)
- Sajad Mazloomi
- Biotechnology and Medicinal Plants Research Center, Faculty of Medicine, Ilam University of Medical Sciences, Ilam, Iran
- Department of Environmental Health Engineering, School of Public Health, Ilam University of Medical Sciences, Ilam, Iran
| | - Ali Amarloei
- Department of Environmental Health Engineering, School of Public Health, Ilam University of Medical Sciences, Ilam, Iran
- Health and Environment Research Center, Ilam University of Medical Sciences, Ilam, Iran
| | - Faeze Gholami
- Department of Environmental Health Engineering, School of Public Health, Iran University of Medical Sciences, Tehran, Iran
| | - Gholam Ali Haghighat
- Faculty of Civil, Water and Environmental Engineering, Shahid Beheshti University, Tehran, Iran
- Department of Environmental Health Engineering, School of Health, Jiroft University of Medical Sciences, Jiroft, Iran
| | | | - Heshmatollah Nourmoradi
- Department of Environmental Health Engineering, School of Public Health, Ilam University of Medical Sciences, Ilam, Iran
- Health and Environment Research Center, Ilam University of Medical Sciences, Ilam, Iran
| | - Ali Akbar Mohammadi
- Department of Environmental Health Engineering, Neyshabur University of Medical Sciences, Neyshabur, Iran.
| | - Mehdi Fattahi
- Institute of Research and Development, Duy Tan University, Da Nang, Vietnam.
- School of Engineering &Technology, Duy Tan University, Da Nang, Vietnam.
| | - Binh Nguyen Le
- Institute of Research and Development, Duy Tan University, Da Nang, Vietnam
- School of Engineering &Technology, Duy Tan University, Da Nang, Vietnam
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5
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Falyouna O, Faizul Idham M, Maamoun I, Bensaida K, Ashik UPM, Sugihara Y, Eljamal O. Promotion of ciprofloxacin adsorption from contaminated solutions by oxalate modified nanoscale zerovalent iron particles. J Mol Liq 2022. [DOI: 10.1016/j.molliq.2022.119323] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
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6
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Optimization by Box–Behnken Design and Synthesis of Magnetite Nanoparticles for Removal of the Antibiotic from an Aqueous Phase. ADSORPT SCI TECHNOL 2022. [DOI: 10.1155/2022/1267460] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
Some environmental problems caused by the intrusion of active drug ingredients, especially antibiotics, into water resources pose a serious threat. Ciprofloxacin (CIP) is an antibiotic from the group of fluoroquinolones that is used extensively in the treatment of bacterial infections. The presence of drug residues in the environment, especially in water resources, is an essential issue due to their stability and nondegradability. This study is aimed at investigating the efficiency of magnetite (Fe3O4) nanoparticles and the effect of independent variables, including initial concentrations of CIP (35-80 mg/L), adsorbent doses (20–60 mg), and pH values (4–10) at reaction time (80 min) for the removal efficiency of CIP antibiotics based on the Box-Behnken design (BBD) method. The analysis of variance (ANOVA) results indicated that a quadratic model was convenient for modeling CIP removal. The first step, the coprecipitation method, was appropriate for the preparation of Fe3O4 nanoparticles and developed as highly efficient adsorbents. Synthesized nanoparticles were later characterized by X-ray diffraction (XRD), Scanning Electron Microscopy (SEM), and Fourier transform infrared spectra (FT-IR). The results of XRD have shown that angles for the peaks at
, which corresponded to the crystal planes 220, 311, 400, 422, 511, 440, and 535, respectively, were consistent with standard peaks of magnetite and a cubic face structure. The obtained results indicated that the CIP removal efficiency was 74.44% under optimum operation parameters: initial concentration of CIP 44.15 (mg/L), adsorbent dosage of 59.6 (mg),
, and contact time of 80 min. In fact, a cooperative agreement between model prediction and experimental data using BBD with significant
values of 0.95 was observed. Based on the results, magnetite nanoparticles have an excellent ability to remove antibiotics from an aqueous phase.
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7
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Yang C, Li K, Xu L, Wang Z, Yu L, Wang J. Reduction of nitrobenzene by a zero-valent iron microspheres/polyvinylidene fluoride (mZVI/PVDF) membrane. Sep Purif Technol 2022. [DOI: 10.1016/j.seppur.2021.120006] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
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8
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Zhao B, Sun Z, Liu Y. An overview of in-situ remediation for nitrate in groundwater. THE SCIENCE OF THE TOTAL ENVIRONMENT 2022; 804:149981. [PMID: 34517309 DOI: 10.1016/j.scitotenv.2021.149981] [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: 05/24/2021] [Revised: 08/19/2021] [Accepted: 08/24/2021] [Indexed: 06/13/2023]
Abstract
Faced with the increasing nitrate pollution in groundwater, in-situ remediation has been widely studied and applied on field-scale as an efficient, economical and less disturbing remediation technology. In this review, we discussed various in-situ remediation for nitrate in groundwater and elaborate on biostimulation, phytoremediation, electrokinetic remediation, permeable reactive barrier and combined remediation. This review described principles of each in-situ remediation, application, the latest progress, problems and challenges on field-scale. Factors affecting the efficiency of in-situ remediation for nitrate in groundwater are also summarized. Finally, this review presented the prospect of in-situ remediation for nitrate pollution in groundwater. The objective of this review is to examine the state of knowledge on in-situ remediation for nitrate in groundwater and critically evaluate factors which affect the up-scaling of laboratory and bench-scale research to field-scale application. This helps to better understand the control mechanisms of various in-situ remediation for nitrate pollution in groundwater and the design options available for application to the field-scale.
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Affiliation(s)
- Bei Zhao
- China University of Geosciences (Beijing), Beijing 100083, China
| | - Zhanxue Sun
- State Key Laboratory of Nuclear Resources and Environment, East China University of Technology, Nanchang 330013, China.
| | - Yajie Liu
- State Key Laboratory of Nuclear Resources and Environment, East China University of Technology, Nanchang 330013, China
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9
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Malakootian M, Aghasi M, Fatehizadeh A, Ahmadian M. Synergetic metronidazole removal from aqueous solutions using combination of electro-persulfate process with magnetic Fe 3O 4@AC nanocomposites: nonlinear fitting of isotherms and kinetic models. Z PHYS CHEM 2021; 235:1297-1321. [DOI: 10.1515/zpch-2020-1702] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 09/20/2023]
Abstract
Abstract
The removal of metronidazole (MNZ) from aqueous solutions by the electro-persulfate (EC–PS) process was performed in combination with magnetic Fe3O4@activated carbon (AC) nanocomposite. In the first step, the Fe3O4@AC nanocomposites were synthesized and characterized using energy-dispersive X-ray spectroscopy (XRD), vibrating-sample magnetometer (VSM) and field emission scanning electron microscopy (FESEM), energy dispersive X-ray spectroscopy (EDS), mapping, and Fourier-transform infrared spectroscopy (FTIR) analysis. The effect of Fe3O4@AC, PS and EC processes were studied separately and in combination and finally, the appropriate process for MNZ removal was selected. The effect of key parameters on the EC–Fe3O4@AC–PS process including pH, Fe3O4@AC dosage, initial MNZ concentration, and PS concentration were investigated. Based on the results obtained, the Fe3O4@AC had a good structure. The MNZ removal in EC, PS, Fe3O4@AC, EC–Fe3O4@AC, EC–PS, EC–Fe3O4@AC–NaCl, EC–Fe3O4@AC–PS, and EC–Fe3O4@AC–PS–NaCl processes were 0, 0, 59.68, 62, 68.94, 67.71, 87.23 and 88%, respectively. Due to the low effect of NaCl insertion on the EC–Fe3O4@AC–PS process, it was not added into the reactor and optimum conditions for the EC–Fe3O4@AC–PS process were determined. Under ideal conditions, including MNZ = 40 mg/L, Fe3O4@AC dose = 1 g/L, pH = 3, PS concentration = 1.68 mM, current density (CD) = 0.6 mA/cm2 and time = 80 min, the MNZ removal was 92%. Kinetic study showed that the pseudo-second-order model was compatible with the obtained results. In the isotherm studies, the Langmuir model was the most consistent for the data of the present study, and the Q
max for Fe3O4@AC dose from 0.25 to 1 g/L was 332 to 125 mg/g, respectively.
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Affiliation(s)
- Mohammad Malakootian
- Environmental Health Engineering Research Center, Kerman University of Medical Sciences , Kerman , Iran
- Department of Environmental Health , School of Public Health, Kerman University of Medical Sciences , Kerman , Iran
| | - Majid Aghasi
- Department of Environmental Health , School of Public Health, Kerman University of Medical Sciences , Kerman , Iran
| | - Ali Fatehizadeh
- Environment Research Center, Research Institute for Primordial Prevention of Non-communicable Disease, Isfahan University of Medical Sciences , Isfahan , Iran
- Department of Environmental Health Engineering , School of Health, Isfahan University of Medical Sciences , Isfahan , Iran
| | - Mohammad Ahmadian
- Environmental Health Engineering Research Center, Kerman University of Medical Sciences , Kerman , Iran
- Department of Environmental Health , School of Public Health, Kerman University of Medical Sciences , Kerman , Iran
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Rabajczyk A, Zielecka M, Cygańczuk K, Pastuszka Ł, Jurecki L. The Use of Polymer Membranes to Counteract the Risk of Environmental of Soil and Water Contamination. MEMBRANES 2021; 11:membranes11060426. [PMID: 34199707 PMCID: PMC8226685 DOI: 10.3390/membranes11060426] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/03/2021] [Revised: 05/31/2021] [Accepted: 06/01/2021] [Indexed: 11/16/2022]
Abstract
Chemical, biological, radiological, or nuclear (CBRN) contamination of the environment is a significant threat to human health and life as well as environmental safety. It is then necessary to take actions aimed at minimizing and eliminating the threat. Depending on the type of contamination, various methods are used, including sorption, biodegradation, separation, or ion exchange processes in which membranes play an important role. The type of membrane is selected in respect of both the environment and the type of neutralized pollutants. Therefore, the production and modification of membranes are being adapted to the type of contamination and the purpose of the work. This article presents examples of membranes and their possible applications depending on the part of the environment subject to reclamation and the type of contamination.
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Ye Q, Xu H, Wang Q, Huo X, Wang Y, Huang X, Zhou G, Lu J, Zhang J. New insights into the mechanisms of tartaric acid enhancing homogeneous and heterogeneous copper-catalyzed Fenton-like systems. JOURNAL OF HAZARDOUS MATERIALS 2021; 407:124351. [PMID: 33144019 DOI: 10.1016/j.jhazmat.2020.124351] [Citation(s) in RCA: 26] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/04/2020] [Revised: 10/04/2020] [Accepted: 10/19/2020] [Indexed: 06/11/2023]
Abstract
The specific roles of tartaric acid (TA), as an eco-friendly ligand, in homogeneous and heterogeneous copper-catalyzed systems were systematically revealed and new mechanisms of TA enhancing the three Fenton-like processes were proposed to provide a theoretical significance in overcoming the deficiency of conventional Fenton processes. The results identified hydroxyl radical (•OH) as the main species responsible for the simultaneous decomposition of TA and metronidazole (MNZ) according to TOC removal. The ESR technique was used to detect superoxide radicals (•O2-), carbon-centered radical (•R) and hydrogen radical (•H) in the Cu2+/TA/H2O2 system, which contributed to the acceleration of the Cu2+/Cu+ redox cycle. The enhancing effect of TA on the homogeneous process was ascribed to the formation of a soluble complex with Cu2+, which favored the pH range extension, Cu+ oxidation, and radical generation. Moreover, the adsorption of TA on the catalysts surface promoted the consumption of H2O2, inducing •OH generation. The formed surface complex (≡Cu2+-TA) also accelerated the regeneration of ≡Cu+, which was confirmed by density functional theory (DFT) calculation and surface characterization analysis (SEM, XRD, and XPS). The possible degradation pathways of MNZ in TA-modified Fenton-like system were also clarified.
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Affiliation(s)
- Qian Ye
- College of Architecture & Environment, Sichuan University, Chengdu 610065, China
| | - Hao Xu
- College of Architecture & Environment, Sichuan University, Chengdu 610065, China
| | - Qingguo Wang
- College of Architecture & Environment, Sichuan University, Chengdu 610065, China
| | - Xiaowei Huo
- College of Architecture & Environment, Sichuan University, Chengdu 610065, China
| | - Yunqi Wang
- College of Architecture & Environment, Sichuan University, Chengdu 610065, China
| | - Xue Huang
- College of Architecture & Environment, Sichuan University, Chengdu 610065, China
| | - Guanyu Zhou
- College of Architecture & Environment, Sichuan University, Chengdu 610065, China
| | - Jinfeng Lu
- College of Environmental Science and Engineering, Nankai University, Tianjin 300071, China
| | - Jing Zhang
- College of Architecture & Environment, Sichuan University, Chengdu 610065, China.
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12
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Li J, Li C, Zhao L, Pan X, Cai G, Zhu G. The application status, development and future trend of nano-iron materials in anaerobic digestion system. CHEMOSPHERE 2021; 269:129389. [PMID: 33385673 DOI: 10.1016/j.chemosphere.2020.129389] [Citation(s) in RCA: 19] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/07/2020] [Revised: 12/18/2020] [Accepted: 12/19/2020] [Indexed: 06/12/2023]
Abstract
Growing environment problem and emphasis of environmental protection motivate intense research efforts in exploring technology to improve treatment efficiency on refractory organic pollutants. Hence, finding a method to make up for the deficiency of anaerobic digestion (AD) is very attractive and challenging tasks. The recent spark in the interest for the usage of some nanomaterials as an additive to strengthen AD system. The adoption of iron compounds can influence the performance and stability in AD system. However, different iron species and compounds can influence AD system in significantly different ways, both positive and negative. Therefore, strengthening mechanism, treatment efficiency, microbial community changes in Nanoscale Zero Valent Iron (nZVI) and Fe3O4 nanoparticles (Fe3O4 NPs) added AD systems were summarized by this review. The strengthening effects of nZVI and Fe3O4 NPs in different pollutants treatment system were analyzed. Previous study on the effects of nZVI and Fe3O4 NPs addition on AD have reported the concentration of nZVI and Fe3O4 NPs, and the types and biodegradability of pollutants might be the key factors that determine the direction and extent of effect in AD system. This review provides a summary on the nZVI and Fe3O4 NPs added AD system to establish experiment systems and conduct follow-up experiments in future study.
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Affiliation(s)
- Junjie Li
- Key Laboratory of Urban Pollutant Conversion, Institute of Urban Environment, Chinese Academy of Sciences, Xiamen, 361021, China; University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Chunxing Li
- Department of Environmental Engineering, Technical University of Denmark, Kgs. Lyngby DK-2800, Denmark
| | - Lixin Zhao
- Institute of Environment and Sustainable Development in Agriculture, Chinese Academy of Agriculture Sciences, Beijing, 100081, China
| | - Xiaofang Pan
- Key Laboratory of Urban Pollutant Conversion, Institute of Urban Environment, Chinese Academy of Sciences, Xiamen, 361021, China
| | - Guanjing Cai
- Key Laboratory of Urban Pollutant Conversion, Institute of Urban Environment, Chinese Academy of Sciences, Xiamen, 361021, China
| | - Gefu Zhu
- Key Laboratory of Urban Pollutant Conversion, Institute of Urban Environment, Chinese Academy of Sciences, Xiamen, 361021, China.
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13
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Silva LL, Abdelraheem W, Nadagouda MN, Rocco AM, Dionysiou DD, Fonseca FV, Borges CP. Novel microwave-driven synthesis of hydrophilic polyvinylidene fluoride/polyacrylic acid (PVDF/PAA) membranes and decoration with nano zero-valent-iron (nZVI) for water treatment applications. J Memb Sci 2021. [DOI: 10.1016/j.memsci.2020.118817] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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14
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Martins PM, Salazar H, Aoudjit L, Gonçalves R, Zioui D, Fidalgo-Marijuan A, Costa CM, Ferdov S, Lanceros-Mendez S. Crystal morphology control of synthetic giniite for enhanced photo-Fenton activity against the emerging pollutant metronidazole. CHEMOSPHERE 2021; 262:128300. [PMID: 33182084 DOI: 10.1016/j.chemosphere.2020.128300] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/04/2020] [Revised: 09/07/2020] [Accepted: 09/08/2020] [Indexed: 06/11/2023]
Abstract
Metronidazole (MNZ) is a recalcitrant antibiotic with toxic and carcinogenic effects in aquatic environments. In this work, Fe5(PO4)4(OH)3·2H2O (giniite) particles were synthesised with three different alkaline cations (Li+, Na+ and K+) and used as Fenton catalysts for MNZ removal. It is shown that the addition of different cations during the hydrothermal synthesis process promote different morphologies from asterisk-like to flower-like and branches-like, maintaining the crystalline structure of pure giniite. The photo-Fenton activity of these particles was then evaluated through the degradation of MNZ under sunlight radiation for 9 h. The results indicate that the alkaline cation has a predominant role in the photo-Fenton efficiency, as demonstrated by the superior degradation efficiencies of Na@giniite particles (91.2% and 72.5% with giniite concentration of 0.2 g L-1 and 0.07 g L-1, respectively), related with its high surface area (10.7 m2 g-1). Thus, it is demonstrated the suitability of Na@giniite particles as Fenton catalyst for MNZ removal from water.
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Affiliation(s)
- P M Martins
- Centre/Department of Physics, University of Minho, Campus de Gualtar, 4710-057, Braga, Portugal; Centre/Department of Chemistry, University of Minho, Campus de Gualtar, 4710-057, Braga, Portugal; IB-S - Institute for Research and Innovation on Bio-Sustainability, University of Minho, 4710-057, Braga, Portugal.
| | - H Salazar
- Centre/Department of Physics, University of Minho, Campus de Gualtar, 4710-057, Braga, Portugal; Centre/Department of Chemistry, University of Minho, Campus de Gualtar, 4710-057, Braga, Portugal; IB-S - Institute for Research and Innovation on Bio-Sustainability, University of Minho, 4710-057, Braga, Portugal
| | - L Aoudjit
- Unité de Développement des équipements Solaires, UDES /Centre de Développement des Energies Renouvelables, CDER, Bou Ismail, 42415, W. Tipaza, Algeria
| | - R Gonçalves
- Centre/Department of Chemistry, University of Minho, Campus de Gualtar, 4710-057, Braga, Portugal
| | - D Zioui
- Unité de Développement des équipements Solaires, UDES /Centre de Développement des Energies Renouvelables, CDER, Bou Ismail, 42415, W. Tipaza, Algeria
| | - A Fidalgo-Marijuan
- BCMaterials, Basque Center for Materials, Applications and Nanostructures, UPV/EHU Science Park, 48940, Leioa, Spain
| | - C M Costa
- Centre/Department of Physics, University of Minho, Campus de Gualtar, 4710-057, Braga, Portugal; Centre/Department of Chemistry, University of Minho, Campus de Gualtar, 4710-057, Braga, Portugal
| | - S Ferdov
- Centre/Department of Physics, University of Minho, Campus de Gualtar, 4710-057, Braga, Portugal
| | - S Lanceros-Mendez
- BCMaterials, Basque Center for Materials, Applications and Nanostructures, UPV/EHU Science Park, 48940, Leioa, Spain; IKERBASQUE, Basque Foundation for Science, 48013, Bilbao, Spain.
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15
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Liu J, Liu A, Guo J, Zhou T, Zhang WX. Enhanced aggregation and sedimentation of nanoscale zero-valent iron (nZVI) with polyacrylamide modification. CHEMOSPHERE 2021; 263:127875. [PMID: 32835968 DOI: 10.1016/j.chemosphere.2020.127875] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/02/2020] [Revised: 07/24/2020] [Accepted: 07/27/2020] [Indexed: 06/11/2023]
Abstract
Nanoscale zero-valent iron (nZVI) settled slowly and incompletely in a nano-iron reactor (NIR) in wastewater treatment, and the effluent quality and processing capacity of nZVI were degenerated. Herein, three types of polyacrylamide (PAM), anionic-APAM (nZVIAPAM), cationic-CPAM (nZVICPAM), and nonionic-NPAM (nZVINPAM)) were applied to modify the nZVI (nZVIPAM), which were proved to enhance aggregation and sedimentation in the gravity settling clarifier of NIR. PAM modification lead to aggregate by forming large agglomerates. The median sizes of aggregates were 32, 194, 168 and 133 μm respectively for nZVI, nZVICPAM, nZVINPAM, and nZVIAPAM. Under quiescent conditions, bare nZVI needed 5 min to reach sedimentation equilibrium, while nZVIPAM just within 1 min nZVICPAM settled more quickly and completely than nZVINPAM and nZVIAPAM. The Fe concentration in the dynamic flow NIR effluent could keep a low level for 8 h for nZVIPAM, while bare nZVI for 6 h. Iron concentration was 3.11, 0.037, 0.93, and 1.20 mg·L-1 for nZVI, nZVICPAM, nZVINPAM, and nZVIAPAM after 8-h-reaction. Meanwhile, the reactivity of nZVIPAM was kept much longer for lead removal in the NIR. Results demonstrated PAM modifications (especially CPAM) provided a reliable solution for nZVI aggregation and sedimentation in wastewater treatment.
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Affiliation(s)
- Jing Liu
- State Key Laboratory for Pollution Control and Resource Reuse, College of Environmental Science and Engineering, Tongji University, Shanghai, 200092, China; Shanghai Institute of Pollution Control and Ecological Security, Shanghai, 200092, China
| | - Airong Liu
- State Key Laboratory for Pollution Control and Resource Reuse, College of Environmental Science and Engineering, Tongji University, Shanghai, 200092, China; Shanghai Institute of Pollution Control and Ecological Security, Shanghai, 200092, China.
| | - Jie Guo
- State Key Laboratory for Pollution Control and Resource Reuse, College of Environmental Science and Engineering, Tongji University, Shanghai, 200092, China; Shanghai Institute of Pollution Control and Ecological Security, Shanghai, 200092, China
| | - Tao Zhou
- State Key Laboratory for Pollution Control and Resource Reuse, College of Environmental Science and Engineering, Tongji University, Shanghai, 200092, China; Shanghai Institute of Pollution Control and Ecological Security, Shanghai, 200092, China
| | - Wei-Xian Zhang
- State Key Laboratory for Pollution Control and Resource Reuse, College of Environmental Science and Engineering, Tongji University, Shanghai, 200092, China; Shanghai Institute of Pollution Control and Ecological Security, Shanghai, 200092, China
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16
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Ranjbar Kalahrudi S, Shakeri A, Ghadimi A, Mahdavi H. Selective oxidation of benzene to phenol using functionalized membrane via Fenton-like process. J Memb Sci 2020. [DOI: 10.1016/j.memsci.2020.118230] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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17
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Saadi S, Moteshaker PM, Rokni SE, Ahmadidoust G, Farnoodian N, Yousefi A. The electrochemical degradation of the metronidazole (MNZ) antibiotic using electrochemical oxidation on a stainless steel316 coated with beta lead oxide (SS316/β-PbO2) anode. INTERNATIONAL JOURNAL OF CHEMICAL REACTOR ENGINEERING 2020. [DOI: 10.1515/ijcre-2019-0226] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
AbstractMetronidazole (MNZ) is one of the pharmaceutical products which is considered as one of the most important pollutants in the environment due to its wide use and resistance to biodegradation. Hence, the purpose of this study is the optimization of the electrochemical degradation of the metronidazole (MNZ) antibiotic using electrochemical oxidation on a stainless steel316 coated with beta lead oxide (SS316/β-PbO2) anode. In the studied electrochemical process, the response surface methodology (RSM) involving a five-level ((pH (A) and electrolysis time (B), current density (C), and MNZ concentration (D)). The central composite design (CCD) was employed for optimizing and modeling of the electrochemical process in the degradation of MNZ. The preparation of SS316/β-PbO2 anode was accomplished using the electro-deposition method. Scanning electron microscope (SEM), energy-dispersive X-ray (EDX), and X-ray diffraction (XRD) analyses were conducted for accurate evaluation and characterization of the coated electrode. The effect of influencing factors on electrochemical degradation of MNZ was studied, and the highest MNZ degradation efficiency was observed to be 98.88% after 120 min under the optimal conditions including the supporting electrolyte concentration of 1.0 g/100 cc, the initial MNZ concentration of 30.1 mg/L, pH of 4 and the current density of 9.99 mA/cm2. The linear regression coefficient (R2) between experiments and different response values in the model was 0.99. Moreover, the statistical analysis of the results indicated that in the range studied, the most effective parameters in MNZ degradation are MNZ concentration and pH. In general, it can be concluded that the electrochemical process using SS316/β-PbO2 anode can effectively eliminate metronidazole, and it can be considered as an efficient method in the degradation of various pollutants.
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Affiliation(s)
- Sommayeh Saadi
- Department of Environmental Health Engineering, School of Public Health, Tehran University of Medical Sciences, Tehran, Islamic Republic of Iran
| | - Parisa Mahmoudpoor Moteshaker
- Department of Natural Resources and Environment, Science and Research Branch, Islamic Azad University, Tehran, Islamic Republic of Iran
| | - Seyed Ehsan Rokni
- Department of Natural Resources and Environment, Science and Research Branch, Islamic Azad University, Tehran, Islamic Republic of Iran
| | - Ghobad Ahmadidoust
- Department of Environmental Health Engineering, School of Public Health, Hamadan University of Medical Sciences, Hamadan, Islamic Republic of Iran
| | - Narges Farnoodian
- Department of Environment and Energy, Science and Research Branch, Islamic Azad University, Tehran, Islamic Republic of Iran
| | - Arman Yousefi
- Department of Microbiology, Faculty of Basic Sciences, Islamic Azad University Bonab, Bonab, Islamic Republic of Iran
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The Influence of Pluronic F-127 Modification on Nano Zero-Valent Iron (NZVI): Sedimentation and Reactivity with 2,4-Dichlorophenol in Water Using Response Surface Methodology. Catalysts 2020. [DOI: 10.3390/catal10040412] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
Nano zero-valent iron (NZVI) is widely used for reducing chlorinated organic pollutants in water. However, the stability of the particles will affect the removal rate of the contaminant. In order to enhance the stability of nano zero-valent iron (NZVI), the particles were modified with F-127 as an environmentally friendly organic stabilizer. The study investigated the effect of the F-127 mass ratio on the colloidal stability of NZVI. Results show that the sedimentation behavior of F-NZVI varied at different mass ratios. A biphasic model was used to describe the two time-dependent settling processes (rapid sedimentation followed by slower settling), and the settling rates were calculated. The surface morphology of the synthesized F-NZVI was observed with a scanning electron microscope (SEM), and the functional groups of the samples were analyzed with Fourier Transform Infrared Spectroscopy (FTIR). Results show that the F-127 was successfully coated on the surface of the NZVI, and that significantly improved the stability of NZVI. Finally, in order to optimize the removal rate of 2,4-dichlorophenol (2,4-DCP) by F-NZVI, three variables were tested: the initial concentration 2,4-DCP, the pH, and the F-NZVI dosage. These were evaluated with a Box-Behnken Design (BBD) of response surface methodology (RSM). The experiments were designed by Design Expert software, and the regression model of fitting quadratic model was established. The following optimum removal conditions were determined: pH = 5, 3.5 g·L−1 F-NZVI for 22.5 mg·L−1 of 2,4-DCP.
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19
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Wang X, Zhang B, Ma J, Ning P. Novel synthesis of aluminum hydroxide gel-coated nano zero-valent iron and studies of its activity in flocculation-enhanced removal of tetracycline. J Environ Sci (China) 2020; 89:194-205. [PMID: 31892391 DOI: 10.1016/j.jes.2019.09.017] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/20/2019] [Revised: 09/07/2019] [Accepted: 09/29/2019] [Indexed: 06/10/2023]
Abstract
A newly designed aluminum hydroxide gel-coated nanoscale zero-valent iron (AHG@NZVI) with enhanced activity and dispersibility of NZVI was successfully synthesized. The AHG@NZVI composite was synthesized via control of the surface AHG content. AHG@NZVI-1, AHG@NZVI-2 and AHG@NZVI-3 were prepared under centrifugal mixing speeds of 1000, 2000 and 4000 r/min, respectively. The activity of AHG@NZVI was evaluated by its tetracycline (TC) removal efficiency. The effects of AHG content, pH value, reaction temperature, and presence of competitive anions on TC removal were investigated. TC could be removed by both adsorption and chemical reduction on AHG@NZVI-2 (centrifugal speed 2000 r/min) in a short time with high removal efficiency (≥98.1%) at the optimal conditions. Such excellent performance can be attributed to a synergistic interaction between aluminum hydroxide gel and NZVI: (1) AHG could enhance the stability and dispersity of NZVI; (2) aluminum hydroxide gel could absorb a certain amount of TC and Fe2+/Fe3+, which facilitated the mass transfer of TC onto the NZVI surface, resulting in acceleration of the reduction rate of TC by the AHG@NZVI composite; and (3) AHG-Fe2+/Fe3+ could absorb a certain amount of TC by flocculation. The kinetics of TC removal by AHG@NZVI composite was found to follow a two-parameter pseudo-first-order model. The presence of competitive anions slightly inhibited the activity of AHG@NZVI systems for TC removal. Overall, this study provides a promising alternative material and environmental pollution management option for antibiotic wastewater treatment.
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Affiliation(s)
- Xiangyu Wang
- Faculty of Environmental Science and Engineering, Kunming University of Science and Technology, Kunming 650500, China.
| | - Binbin Zhang
- Faculty of Environmental Science and Engineering, Kunming University of Science and Technology, Kunming 650500, China
| | - Jun Ma
- School of Environment, Harbin Institute of Technology, Harbin 150090, China
| | - Ping Ning
- Faculty of Environmental Science and Engineering, Kunming University of Science and Technology, Kunming 650500, China.
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20
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Evaluation of Nano Zero-Valent Iron (nZVI) Activity in Solution and Immobilized in Hydrophilic PVDF Membrane for Drimaren Red X-6BN and Bisphenol-a Removal in Water. Processes (Basel) 2019. [DOI: 10.3390/pr7120904] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
Fenton reactions that involve nano zero-valent iron (nZVI) have shown high promise in the removal of organic pollutants. In this work, nZVI stabilized with carboxymethyl cellulose (CMC) was evaluated for drimaren red X-6BN (DRX-6BN, 10 mg/L) and bisphenol-a (BPA, 800 mg/L) removal. Oxidation reactions were conducted for removal of both compounds by varying nZVI/CMC concentration (0.01–5 g/L), hydrogen peroxide (H2O2, 0.01–0.1 g/L), and pH (3–9). DRX-6BN degradation rate was the highest (kinetic constant (kobs) = 4.622 h−1) when working at pH 3 and 3 g/L of nZVI/CMC. Increasing H2O2 concentration could not improve the reaction. For BPA, all the conditions tested showed removals of more than 96% with 0.02 g/L of H2O2. This result was compared with the activity of nZVI loaded in hydrophilic PVDF (Polyvinylidene fluoride) membranes by polyacrylic acid (PAA) to entrap nanoparticles to the membrane surface. As expected, the attachment of nZVI onto the membranes diminished nanoparticles’ activity; however, it is important to highlight the need for preparing a stable catalytic membrane, which could enhance pollutant removal of microfiltration membranes’ systems. This was confirmed by the percentage of iron leaching from functionalized membranes, where a higher concentration of iron in the bulk solution leads to enhancement on BPA removal. Issues with BPA diffusion resistance inside the pores were overcome by conducting the nZVI/PAA/PVDF membranes in the cross-flow system, reaching 40% of BPA removal after 3 h of permeation.
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21
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Wi H, Kim H, Oh D, Bae S, Hwang Y. Surface modification of poly(vinyl alcohol) sponge by acrylic acid to immobilize Prussian blue for selective adsorption of aqueous cesium. CHEMOSPHERE 2019; 226:173-182. [PMID: 30927669 DOI: 10.1016/j.chemosphere.2019.03.101] [Citation(s) in RCA: 23] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/30/2018] [Revised: 03/05/2019] [Accepted: 03/14/2019] [Indexed: 06/09/2023]
Abstract
Prussian blue (PB) is known to be an effective cesium adsorbent, but the direct application of PB is limited by the difficulty of its recovery from solution. In this study, PB was immobilized on a porous support media, poly(vinyl alcohol) (PVA) sponge, for use as a selective material for cesium adsorption. The commercially available PVA sponge was functionalized by the addition of poly(acrylic acid) (PAA) (i.e., PAA-PVA) to enhance the PB immobilization, which increased both PB loading and binding strength. The AA functionalization changed the major functional groups from hydroxyl to carboxylic, as confirmed by Fourier-transform infrared spectroscopy. PB was further synthesized in the PAA-PVA using layer-by-layer (LBL) assembly, which contributed to more stable PB formation, and reduced detachment of PB during washing. The prepared adsorbent, PAA-L@PVA-PB, was tested for cesium adsorption capability. Cesium adsorption was equilibrated within three hours, and the maximum cesium adsorption capacity was 4.082 mg/g, which was 5.7 times higher than Pure-L@PVA-PB. The observed decrease in solution pH during cesium adsorption inhibited overall cesium uptake, however, this was minimized by buffering. The prepared PAA-L@PVA-PB was used as a column filling material and its potential use as a countermeasure for removing radioactive cesium from a contaminated water stream was demonstrated.
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Affiliation(s)
- Hyobin Wi
- Department of Environmental Engineering, Seoul National University of Science and Technology, 232 Gongneung-ro, Nowon-gu, Seoul, 01811, Republic of Korea
| | - Hyowon Kim
- Department of Environmental Engineering, Seoul National University of Science and Technology, 232 Gongneung-ro, Nowon-gu, Seoul, 01811, Republic of Korea
| | - Daemin Oh
- Department of Land, Water and Environment Research, Korea Institute of Civil Engineering and Building Technology, 283 Goyang-daero, Ilsanseo-gu, Goyang-si, Gyeonggi-do, 10223, Republic of Korea
| | - Sungjun Bae
- Department of Civil and Environmental Engineering, Konkuk University, 120 Neungdong-ro, Gwangjin-gu, Seoul, 05029, Republic of Korea
| | - Yuhoon Hwang
- Department of Environmental Engineering, Seoul National University of Science and Technology, 232 Gongneung-ro, Nowon-gu, Seoul, 01811, Republic of Korea.
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Kim H, Wi H, Kang S, Yoon S, Bae S, Hwang Y. Prussian blue immobilized cellulosic filter for the removal of aqueous cesium. THE SCIENCE OF THE TOTAL ENVIRONMENT 2019; 670:779-788. [PMID: 30921711 DOI: 10.1016/j.scitotenv.2019.03.234] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/23/2018] [Revised: 02/26/2019] [Accepted: 03/15/2019] [Indexed: 06/09/2023]
Abstract
Cesium is a typical radioisotope that has a long half-life and is dangerous and can be emitted in the event of a nuclear accident. Prussian blue (PB), which is known to effectively adsorb cesium, is difficult to separate when it is dissolved in an aqueous system. In this study, PB was immobilized on a filter type support media, cellulose filter (CF), for use as a selective material for cesium adsorption. The commercially available CF was functionalized by the addition of acrylic acid (AA) (i.e., CF-AA) to enhance the PB immobilization, which increased both PB loading and binding strength. The AA functionalization changed the major functional groups from hydroxyl to carboxylic, as confirmed by Fourier-transform infrared spectroscopy. As a result of the surface modification, the PB immobilization increased 1.5 times and reduced detachment of PB during washing. The prepared adsorbent, CF-AA-PB, was tested for its cesium adsorption capability. Cesium adsorption equilibrated within 3 h, and the maximum cesium adsorption capacity was 16.66 mg/g. The observed decrease in the solution pH during cesium adsorption inhibited the overall cesium uptake; however, this was minimized by buffering. The prepared CF-AA-PB was used as a filter material and its potential use as a countermeasure for removing radioactive cesium from a contaminated water stream was demonstrated.
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Affiliation(s)
- Hyowon Kim
- Department of Environmental Engineering, Seoul National University of Science and Technology, 232 Gongneung-ro, Nowon-gu, Seoul 01811, Republic of Korea
| | - Hyobin Wi
- Department of Materials and Environmental Engineering, Seoul National University, 1 Gwanak-ro, Gwanak-gu, Seoul 08826, Republic of Korea
| | - Sungwon Kang
- Department of Land, Water and Environment Research, Korea Institute of Civil Engineering and Building Technology, 283 Goyang-daero, Ilsanseo-gu, Goyang-si, Gyeonggi-do 10223, Republic of Korea
| | - Sunho Yoon
- Department of Civil and Environmental Engineering, Konkuk University, 120 Neungdong-ro, Gwangjin-gu, Seoul 05029, Republic of Korea
| | - Sungjun Bae
- Department of Civil and Environmental Engineering, Konkuk University, 120 Neungdong-ro, Gwangjin-gu, Seoul 05029, Republic of Korea
| | - Yuhoon Hwang
- Department of Environmental Engineering, Seoul National University of Science and Technology, 232 Gongneung-ro, Nowon-gu, Seoul 01811, Republic of Korea.
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Zhou J, Zhang C, Niu T, Huang R, Li S, Sun J, Wang Y. Facile synthesis of reusable magnetic Fe/Fe3C/C composites from renewable resources for super-fast removal of organic dyes: Characterization, mechanism and kinetics. POWDER TECHNOL 2019. [DOI: 10.1016/j.powtec.2019.04.016] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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Liu P, Wang X, Ma J, Liu H, Ning P. Highly efficient immobilization of NZVI onto bio-inspired reagents functionalized polyacrylonitrile membrane for Cr(VI) reduction. CHEMOSPHERE 2019; 220:1003-1013. [PMID: 33395787 DOI: 10.1016/j.chemosphere.2018.12.163] [Citation(s) in RCA: 28] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/19/2018] [Revised: 12/06/2018] [Accepted: 12/22/2018] [Indexed: 06/12/2023]
Abstract
To provide superior substrates and determine the specific species of immobilized nano zero-valent iron (NZVI) system, polyacrylonitrile (PAN) membrane was functionalized by bio-inspired polydopamine (PDA) and poly(l-DOPA) (PDOPA) for efficient immobilization of NZVI. The synthesized composites were denoted as PAN/PDA-NZVI (PPN) and PAN/PDOPA-NZVI (PON), respectively. Analyses of XRD, SEM/EDS and XPS show that the aggregation and release of iron nanoparticles had been successfully controlled by improving membrane hydrophilcity and iron-chelating capacity via the graft of functionalized groups (i.e. OH and COOH) of PDA and PDOPA on PAN membrane. Both PPN and PON composites exhibited superior reactivity for Cr(VI) removal (Cr(VI) removal efficiency and reaction rate were 2.21-2.22 and 9.90-10.14 times higher than that of bare NZVI, respectively). The stability and recyclability of PPN and PON composites could be maintained over repeated cycles. Further analyses indicate that PON is more capable for Cr(VI) elimination than PPN due to the proprietary carboxyl of l-DOPA. With the addition of 1,10-phenanthroline, membrane-chelated Fe(II) was determined to be the major species in Cr(VI) removal system, accounting for 56.9% and 53.8% with regard to PPN and PON composites, and Fe0 was responsible for the reduction of residual Cr(VI). Analyse of reacted composites revealed that Cr(VI) was completely converted into Cr(III), followed by formation of dominant Cr(III)/Fe(III) (oxy)hydroxides and partial desorption from NZVI reactive sites. This study suggested that both synthesized PPN and PON composites have potentials for Cr(VI)-contaminated wastewater treatment.
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Affiliation(s)
- Peng Liu
- Faculty of Environmental Science and Engineering, Kunming University of Science and Technology, Kunming 650500, China
| | - Xiangyu Wang
- Faculty of Environmental Science and Engineering, Kunming University of Science and Technology, Kunming 650500, China.
| | - Jun Ma
- State Key Laboratory of Urban Water Resources and Environment, School of Municipal and Environmental Engineering, Harbin Institute of Technology, Harbin 150090, China
| | - Huiling Liu
- State Key Laboratory of Urban Water Resources and Environment, School of Municipal and Environmental Engineering, Harbin Institute of Technology, Harbin 150090, China
| | - Ping Ning
- Faculty of Environmental Science and Engineering, Kunming University of Science and Technology, Kunming 650500, China.
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25
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Wang X, Lu M, Ma J, Ning P. Preparation of air-stable magnetic g-C3N4@Fe0-graphene composite by new reduction method for simultaneous and synergistic conversion of organic dyes and heavy metal ions in aqueous solution. Sep Purif Technol 2019. [DOI: 10.1016/j.seppur.2018.11.052] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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26
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Xu L, Yang Y, Li W, Tao Y, Sui Z, Song S, Yang J. Three-dimensional macroporous graphene-wrapped zero-valent copper nanoparticles as efficient micro-electrolysis-promoted Fenton-like catalysts for metronidazole removal. THE SCIENCE OF THE TOTAL ENVIRONMENT 2019; 658:219-233. [PMID: 30577018 DOI: 10.1016/j.scitotenv.2018.12.040] [Citation(s) in RCA: 36] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/13/2018] [Revised: 11/15/2018] [Accepted: 12/04/2018] [Indexed: 06/09/2023]
Abstract
Three-dimensional macroporous graphene-wrapped zero-valent copper nanoparticles (3D-GN@Cu0) were synthesized using a self-assembly process of liquid-phase reduction and characterized by field emission scanning electron microscopy, nitrogen adsorption/desorption isotherms, X-ray diffraction, Raman spectrum analysis, and X-ray photoelectron spectroscopy. The catalytic activity of 3D-GN@Cu0 was evaluated in view of the effects of various systems, the pH value, catalyst dosage, initial metronidazole concentration and temperature, and it showed a high efficiency for removing metronidazole with saturated dissolved oxygen (without adding extra H2O2) in a wide range of pH value from 3.2 to 9.8. Combined with the results of dissolved oxygen activation, determination of reactive oxidizing species, and X-ray photoelectron spectroscopy (XPS) analysis, the surface-bounded ·OHads formed by the reaction of the in situ generation H2O2 with 3D-GN@Cu0 was mainly responsible for the removal of metronidazole. The charge distribution and electrostatic potential (ESP) of 3D-GN@Cu0 further illustrated the distribution and transfer of electrons on the catalyst surface, which predicted a micro-electrolysis-promoted Fenton-like reaction mechanism.
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Affiliation(s)
- Lejin Xu
- Department of Nuclear Engineering and Technology, School of Energy and Power Engineering, Huazhong University of Science & Technology, Wuhan 430074, PR China
| | - Yujia Yang
- Department of Nuclear Engineering and Technology, School of Energy and Power Engineering, Huazhong University of Science & Technology, Wuhan 430074, PR China
| | - Wuyang Li
- Department of Nuclear Engineering and Technology, School of Energy and Power Engineering, Huazhong University of Science & Technology, Wuhan 430074, PR China
| | - Yujie Tao
- Department of Nuclear Engineering and Technology, School of Energy and Power Engineering, Huazhong University of Science & Technology, Wuhan 430074, PR China
| | - Zengguang Sui
- Department of Nuclear Engineering and Technology, School of Energy and Power Engineering, Huazhong University of Science & Technology, Wuhan 430074, PR China
| | - Shuang Song
- College of Environment, Zhejiang University of Technology, Hangzhou 310032, PR China
| | - Jun Yang
- Department of Nuclear Engineering and Technology, School of Energy and Power Engineering, Huazhong University of Science & Technology, Wuhan 430074, PR China.
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Xu L, Li W, Désesquelles P, Van-Oanh NT, Thomas S, Yang J. A Statistical Model and DFT Study of the Fragmentation Mechanisms of Metronidazole by Advanced Oxidation Processes. J Phys Chem A 2019; 123:933-942. [DOI: 10.1021/acs.jpca.8b10554] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Affiliation(s)
- Lejin Xu
- Department of Nuclear Engineering and Technology, School of Energy and Power Engineering, Huazhong University of Science & Technology, Wuhan 430074, People’s Republic of China
| | - Wuyang Li
- Department of Nuclear Engineering and Technology, School of Energy and Power Engineering, Huazhong University of Science & Technology, Wuhan 430074, People’s Republic of China
| | - Pierre Désesquelles
- Department of Nuclear Engineering and Technology, School of Energy and Power Engineering, Huazhong University of Science & Technology, Wuhan 430074, People’s Republic of China
- Centre des Sciences Nucléaires et des Sciences de la Matière (CSNSM), Université Paris-Sud and CNRS-IN2P3, Université Paris-Saclay, Bâtiment 104, 15 rue Clemenceau, F91405 Orsay Cédex, France
| | - Nguyen-Thi Van-Oanh
- Laboratoire de Chimie Physique (LCP), CNRS UMR 8000, Université Paris-Sud, Université Paris-Saclay, F91405 Orsay Cédex, France
| | - Sébastien Thomas
- Centre des Sciences Nucléaires et des Sciences de la Matière (CSNSM), Université Paris-Sud and CNRS-IN2P3, Université Paris-Saclay, Bâtiment 104, 15 rue Clemenceau, F91405 Orsay Cédex, France
- Laboratoire de Chimie Physique (LCP), CNRS UMR 8000, Université Paris-Sud, Université Paris-Saclay, F91405 Orsay Cédex, France
| | - Jun Yang
- Department of Nuclear Engineering and Technology, School of Energy and Power Engineering, Huazhong University of Science & Technology, Wuhan 430074, People’s Republic of China
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Kalhori EM, Ghahramani E, Al-Musawi TJ, Saleh HN, Sepehr MN, Zarrabi M. Effective reduction of metronidazole over the cryptomelane-type manganese oxide octahedral molecular sieve (K-OMS-2) catalyst: facile synthesis, experimental design and modeling, statistical analysis, and identification of by-products. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2018; 25:34164-34180. [PMID: 30284713 DOI: 10.1007/s11356-018-3352-9] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/16/2018] [Accepted: 09/26/2018] [Indexed: 06/08/2023]
Abstract
High concentrations of antibiotic compounds within pharmaceutical wastewater have hazardous impacts toward environment and human health. Therefore, there is an immediate requirement of efficient treatment method for removal of antibiotics from aquatic environment. In the present study, the cryptomelane catalyst-type manganese oxide octahedral molecular sieve (K-OMS-2) was synthesized in the presence of benzyl alcohol as a reducing agent and cetyltrimethylammonium bromide as a structure-directing agent and then utilized to reduce the metronidazole. The central composite design method was the experimental design adopted. The FESEM analysis revealed that the K-OMS-2 surface contained many uniformly cylindrical aggregates less than about 40 nm in diameter and about 80-100 nm in length. Besides, a high specific surface area of 129 m2/g and average pore size of 45.47 nm were recorded. According to the TGA/DTA analysis, the prepared catalyst revealed high thermal stability. The maximum metronidazole degradation (95.36%) was evident at conditions of pH = 3, catalyst mass = 0.97 g/L, contact time = 200 min, and metronidazole concentration = 20 mg/L. Metronidazole did not form a complex with nitrate, fluoride, sulfate, or hardness. These ions exerted a negligible effect on metronidazole reduction using the K-OMS-2 catalyst, except for hardness, which reduced the removal efficiency of metronidazole by 17%. The FTIR and LC-MS revealed a complex mechanism involved in the metronidazole degradation by the K-OMS-2 involving the formation of an amino group, a hydroxyelated compound via N-denitration, and hydrogenation process on the K-OMS-2 catalyst surface.
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Affiliation(s)
- Ebrahim Mohammadi Kalhori
- Department of Environmental Health Engineering, Research Center for Health, Safety and Environment, Faculty of Health, Alborz University of Medical Sciences, Karaj, Iran
| | - Esmaeil Ghahramani
- Environmental Health Research Center, Research Institute for Health Development, Kurdistan University of Medical Sciences, Sanandaj, Iran
| | - Tariq J Al-Musawi
- Department of Civil Engineering, Faculty of Engineering, Isra University, Amman, Jordan
| | - Hossien Najafi Saleh
- Department of Environmental Health Engineering, School of Health, Torbat Heydariyeh University of Medical Sciences, Torbat Heydarieh, Iran
| | - Mohammad Noori Sepehr
- Department of Environmental Health Engineering, Research Center for Health, Safety and Environment, Faculty of Health, Alborz University of Medical Sciences, Karaj, Iran
| | - Mansur Zarrabi
- Department of Environmental Health Engineering, Research Center for Health, Safety and Environment, Faculty of Health, Alborz University of Medical Sciences, Karaj, Iran.
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Aboudalle A, Djelal H, Fourcade F, Domergue L, Assadi AA, Lendormi T, Taha S, Amrane A. Metronidazole removal by means of a combined system coupling an electro-Fenton process and a conventional biological treatment: By-products monitoring and performance enhancement. JOURNAL OF HAZARDOUS MATERIALS 2018; 359:85-95. [PMID: 30014918 DOI: 10.1016/j.jhazmat.2018.07.006] [Citation(s) in RCA: 36] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/12/2018] [Revised: 06/29/2018] [Accepted: 07/02/2018] [Indexed: 06/08/2023]
Abstract
In order to mineralize Metronidazole (MTZ), a process coupling an electro-Fenton pretreatment and a biological degradation was implemented. A mono-compartment batch reactor containing a carbon-felt cathode and a platinum anode was employed to carry out the electro-Fenton pretreatment of MTZ. A total degradation of MTZ (100 mg L-1) was observed at 0.07 mA.cm-2 after only 20 min of electrolysis. Yet, after 1 and 2 h of electrolysis, the mineralization level remained low (16.2% and 32% respectively), guaranteeing a significant residual organic content for further biological treatment. LCMS/MS was used to determine the intermediates by-products and hence to propose a plausible degradation pathway. An increase from 0 to 0.44 and 0.6 for 1 and 2 h of electrolysis was observed for the BOD5/COD ratio. Thus, from 1 h of electro-Fenton pretreatment, the electrolysis by-products were considered biodegradable. A biological treatment of the electrolysis by-products after 1 and 2 h was then realized. The mineralization yields reached very close values, about 84% for 1 and 2 h of electrolysis after 504 h of biological treatment, namely close to 89% for the overall process, showing the pertinence of the proposed coupled process.
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Affiliation(s)
- Arwa Aboudalle
- Univ Rennes, Ecole Nationale Supérieure de Chimie de Rennes, CNRS, ISCR - UMR6226, F-35000 Rennes, France; Laboratoire de Biotechnologies Appliquées, Centre AZM pour la recherche en biotechnologies et ses applications, Ecole doctorale des sciences et technologies, Université Libanaise, Rue Al-Mitein, Tripoli, Lebanon.
| | - Hayet Djelal
- Univ Rennes, Ecole Nationale Supérieure de Chimie de Rennes, CNRS, ISCR - UMR6226, F-35000 Rennes, France; Ecole des Métiers de l'Environnement, Campus de Ker Lann, 35170 Bruz, France
| | - Florence Fourcade
- Univ Rennes, Ecole Nationale Supérieure de Chimie de Rennes, CNRS, ISCR - UMR6226, F-35000 Rennes, France
| | - Lionel Domergue
- Univ Rennes, Ecole Nationale Supérieure de Chimie de Rennes, CNRS, ISCR - UMR6226, F-35000 Rennes, France
| | - Aymen Amin Assadi
- Univ Rennes, Ecole Nationale Supérieure de Chimie de Rennes, CNRS, ISCR - UMR6226, F-35000 Rennes, France
| | - Thomas Lendormi
- Université Bretagne Sud, FRE CNRS 3744, IRDL, F-56300 Pontivy, France
| | - Samir Taha
- Laboratoire de Biotechnologies Appliquées, Centre AZM pour la recherche en biotechnologies et ses applications, Ecole doctorale des sciences et technologies, Université Libanaise, Rue Al-Mitein, Tripoli, Lebanon; Faculté de santé publique, Université Libanaise, quartier Dam et Farz, Tripoli, Lebanon
| | - Abdeltif Amrane
- Univ Rennes, Ecole Nationale Supérieure de Chimie de Rennes, CNRS, ISCR - UMR6226, F-35000 Rennes, France
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Tran ML, Fu CC, Juang RS. Removal of metronidazole by TiO 2 and ZnO photocatalysis: a comprehensive comparison of process optimization and transformation products. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2018; 25:28285-28295. [PMID: 30078135 DOI: 10.1007/s11356-018-2848-7] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/07/2018] [Accepted: 07/25/2018] [Indexed: 06/08/2023]
Abstract
The photodegradation of antibiotic metronidazole (MNZ) was systematically studied and compared by using aqueous suspensions of TiO2 and ZnO catalysts under 100-W UV irradiation. The degradation conditions were optimized using the central composite design and response surface methodology. The optimal photodegradation conditions obtained were at pH 6.0 with 1.5 g L-1 of TiO2 (86.10% removal for 50 mg L-1 MNZ) and at pH 9.5 with 0.5 g L-1 of ZnO (60.32% removal for 30 mg L-1 MNZ) after 60-min irradiation at 20 °C. The degradation efficiency in the presence of TiO2 was higher than that of ZnO. The participation of active species such as hydroxyl radicals (OH·), holes (h+), and superoxide radicals (O2-·) during MNZ photodegradation over TiO2 and ZnO catalysts was also examined. Experimental results showed that MNZ oxidation was mainly driven by the presence of holes and superoxide radicals. Totally, 10 major intermediates were detected in UV/TiO2 and UV/ZnO photocatalysis of MNZ using LC-QTof/MS system, in which 5 same intermediates were found. The remaining different intermediates led to the variations of degradation pathways of both processes. Moreover, some bigger transformation products than the parent MNZ were detected.
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Affiliation(s)
- Mai Lien Tran
- Department of Chemical and Materials Engineering, Chang Gung University, 259 Wenhua First Road, Guishan, Taoyuan, 33302, Taiwan
- Institute of Environmental Science, Engineering and Management, Industrial University of Ho Chi Minh City, Ho Chi Minh City, Vietnam
| | - Chun-Chieh Fu
- Department of Chemical and Materials Engineering, Chang Gung University, 259 Wenhua First Road, Guishan, Taoyuan, 33302, Taiwan
| | - Ruey-Shin Juang
- Department of Chemical and Materials Engineering, Chang Gung University, 259 Wenhua First Road, Guishan, Taoyuan, 33302, Taiwan.
- Department of Internal Medicine, Division of Nephrology, Chang Gung Memorial Hospital, Linkou, Taiwan.
- Department of Safety, Health and Environmental Engineering, Ming Chi University of Technology, Taishan, New Taipei City, 24301, Taiwan.
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Wang X, Wang A, Ma J. Visible-light-driven photocatalytic removal of antibiotics by newly designed C 3N 4@MnFe 2O 4-graphene nanocomposites. JOURNAL OF HAZARDOUS MATERIALS 2017; 336:81-92. [PMID: 28475915 DOI: 10.1016/j.jhazmat.2017.04.012] [Citation(s) in RCA: 70] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/25/2016] [Revised: 03/28/2017] [Accepted: 04/03/2017] [Indexed: 05/26/2023]
Abstract
Newly designed magnetic g-C3N4/MnFe2O4/graphene (C3N4@MnFe2O4-G) composites with enhanced photocatalytic activity were successfully synthesized. The photocatalytic behavior of C3N4@MnFe2O4-G was assessed in photo Fenton-like degradation of antibiotic pollutants, including metronidazole, amoxicillin, tetracycline and ciprofloxacin, using persulfate (S2O82-) as an oxidant under visible light illumination. The C3N4@MnFe2O4-G composites show a superior catalytic activity with 94.5% removal of metronidazole that was almost 3.5 times as high as that of the pure g-C3N4, which could be attributed to the synergistic promoting effect of the favorable adsorptivity, enhanced light absorption intensity, high migration efficiency of charge carriers and longer lifetime of separated electron-hole pairs derived from the formation of the heterojunction between the g-C3N4 and MnFe2O4. Moreover, the self-redox properties of iron and manganese atoms in MnFe2O4 induced by S2O82- were particularly beneficial for the generation of SO4-. The quenching tests and electron spin resonance (ESR) display that h+, O2-, SO4- and OH are responsible for the antibiotics decomposition. The heterogeneous photocatalyst could be easily recovered by an extra magnetic field and reused several times without any obvious deterioration in catalytic activity. According to the investigation of active species and identified intermediates, the possible photocatalytic mechanism and reaction pathways have been proposed.
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Affiliation(s)
- Xiangyu Wang
- Faculty of Environmental Science and Engineering, Kunming University of Science and Technology, Kunming, 650500, China.
| | - Anqi Wang
- Faculty of Environmental Science and Engineering, Kunming University of Science and Technology, Kunming, 650500, China.
| | - Jun Ma
- School of Municipal and Environmental Engineering, State Key Laboratory of Urban Water Resources and Environment, Harbin Institute of Technology, Harbin, 150090, China.
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32
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Wang X, Cong S, Wang P, Ma J, Liu H, Ning P. Novel green micelles Pluronic F-127 coating performance on nano zero-valent iron: Enhanced reactivity and innovative kinetics. Sep Purif Technol 2017. [DOI: 10.1016/j.seppur.2016.09.009] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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33
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Derikvandi H, Nezamzadeh-Ejhieh A. Comprehensive study on enhanced photocatalytic activity of heterojunction ZnS-NiS/zeolite nanoparticles: Experimental design based on response surface methodology (RSM), impedance spectroscopy and GC-MASS studies. J Colloid Interface Sci 2017; 490:652-664. [DOI: 10.1016/j.jcis.2016.11.105] [Citation(s) in RCA: 60] [Impact Index Per Article: 8.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/20/2016] [Revised: 11/29/2016] [Accepted: 11/30/2016] [Indexed: 10/20/2022]
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34
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Wang X, Wang A, Ma J, Fu M. Facile green synthesis of functional nanoscale zero-valent iron and studies of its activity toward ultrasound-enhanced decolorization of cationic dyes. CHEMOSPHERE 2017; 166:80-88. [PMID: 27689887 DOI: 10.1016/j.chemosphere.2016.09.056] [Citation(s) in RCA: 46] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/31/2016] [Revised: 08/06/2016] [Accepted: 09/14/2016] [Indexed: 05/28/2023]
Abstract
For the first time, an integrated green technology by coupling functional nanoscale zero-valent iron (NZVI) with ultrasound (US) was innovatively developed for the enhanced decolorization of malachite green (MG) and methylene blue (MB). The functional NZVI (TP-Fe) was successfully fabricated via a facile, one-step and environmentally-benign approach by directly introducing high pure tea polyphenol (TP), where TP contenting abundant epicatechin was employed as reductant, dispersant and capping agent. Note that neither additional extraction procedure nor protection gas was needed during the entire synthesis process. Affecting factors (including US frequency, initial pH, dye concentration, and reaction temperature) were investigated. Results show that TP-Fe exhibited enhanced activity, antioxidizability and stability over the reaction course, which could be attributed to the functionalization of TP on NZVI and the invigorating effect of US (i.e., improving the mass transfer rate, breaking up the aggregates of TP-Fe nanoparticles, and maintaining the TP-Fe surface activity). The kinetics for MG and MB decolorization by the TP-Fe/US system could be well described by a two-parameter pseudo-first-order decay model, and the activation energies of MG and MB decolorization in this new system were determined to be 21 kJ mol-1 and 24 kJ mol-1, respectively. In addition, according to the identified reaction products, a possible mechanism associated with MG and MB decolorization with the TP-Fe/US system was proposed.
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Affiliation(s)
- Xiangyu Wang
- Faculty of Environmental Science and Engineering, Kunming University of Science and Technology, Kunming, 650500, China.
| | - Anqi Wang
- Faculty of Environmental Science and Engineering, Kunming University of Science and Technology, Kunming, 650500, China.
| | - Jun Ma
- School of Municipal and Environmental Engineering, State Key Laboratory of Urban Water Resources and Environment, Harbin Institute of Technology, Harbin, 150090, China.
| | - Minglai Fu
- Key Laboratory of Urban Environment and Health, Institute of Urban Environment, Chinese Academy of Sciences, Xiamen, 361021, China.
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Yanez H JE, Wang Z, Lege S, Obst M, Roehler S, Burkhardt CJ, Zwiener C. Application and characterization of electroactive membranes based on carbon nanotubes and zerovalent iron nanoparticles. WATER RESEARCH 2017; 108:78-85. [PMID: 27816193 DOI: 10.1016/j.watres.2016.10.055] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/13/2016] [Revised: 08/29/2016] [Accepted: 10/22/2016] [Indexed: 05/13/2023]
Abstract
Carbon nanotube (CNT) membranes were produced from multi-walled CNTs by a filtration technique and used for the removal of the betablocker metoprolol by adsorptive and reactive processes. The reactivity of CNT membranes was enhanced by nanoparticulate zero-valent iron (NZVI) which was deposited on the CNT membranes by pulsed voltammetry applying defined number of pulses (Fe-CNT (100) and Fe-CNT (400) membranes). Surface analysis with SEM showed iron nanoparticle sizes between 19 and 425 nm. Pore size distribution for the different membranes was determined by capillary flow porometry (Galwick fluid). Pore size distribution for all membranes was similar (40 nm), which resulted in a water permeability typical for microfiltration membranes. Metoprolol was removed by the CNT membrane only by sorption, whereas the Fe-CNT membrane revealed also metoprolol degradation due to Fenton type reactions. Further application of electrochemical potentials on both the CNT and the Fe-CNT membranes improved the removal efficiencies to 74% for CNT membranes at 1 V and to 97% for Fe-CNT (400) membranes at 1 V. Seven transformation products have been identified for metoprolol by high-resolution mass spectrometry when electrochemical degradation was performed with CNT and Fe-CNT membranes. Additionally, two of the identified transformation products (TPs) were also observed for Fe-CNT membranes without the application of electrochemical potential. However, only 10% of the degraded metoprolol could be explained by the formation of TPs.
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Affiliation(s)
- Jorge E Yanez H
- Eberhard Karls Universität Tübingen, Center for Applied Geosciences (ZAG), Environmental Analytical Chemistry, Hölderlinstr. 12, 72074 Tübingen, Germany
| | - Zi Wang
- Eberhard Karls Universität Tübingen, Center for Applied Geosciences (ZAG), Environmental Analytical Chemistry, Hölderlinstr. 12, 72074 Tübingen, Germany
| | - Sascha Lege
- Eberhard Karls Universität Tübingen, Center for Applied Geosciences (ZAG), Environmental Analytical Chemistry, Hölderlinstr. 12, 72074 Tübingen, Germany
| | - Martin Obst
- Universität Bayreuth, Bayreuth Center of Ecology and Environmental Research, Universitätsstraße 30, 95447 Bayreuth, Germany
| | - Sebastian Roehler
- NMI Natural and Medical Sciences Institute, Markwiesenstr. 55, 72770 Reutlingen, Germany
| | - Claus J Burkhardt
- NMI Natural and Medical Sciences Institute, Markwiesenstr. 55, 72770 Reutlingen, Germany
| | - Christian Zwiener
- Eberhard Karls Universität Tübingen, Center for Applied Geosciences (ZAG), Environmental Analytical Chemistry, Hölderlinstr. 12, 72074 Tübingen, Germany.
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Xu J, Cao Z, Liu X, Zhao H, Xiao X, Wu J, Xu X, Zhou JL. Preparation of functionalized Pd/Fe-Fe3O4@MWCNTs nanomaterials for aqueous 2,4-dichlorophenol removal: Interactions, influence factors, and kinetics. JOURNAL OF HAZARDOUS MATERIALS 2016; 317:656-666. [PMID: 27349842 DOI: 10.1016/j.jhazmat.2016.04.063] [Citation(s) in RCA: 39] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/14/2016] [Revised: 04/12/2016] [Accepted: 04/25/2016] [Indexed: 06/06/2023]
Abstract
Magnetic multi-walled carbon nanotubes (MWCNTs) were prepared to support Pd/Fe nanoparticles, inhibit the aggregation and passivation, and achieve magnetic separation to avoid the environmental risk of nanoparticles. Rapid adsorption of initial contaminant, steady dechlorination, and gradual desorption of final product was observed. The micromorphology, chemical structure, and components of the nanohybrids were comprehensively characterized by a series of analysis technologies, such as EDX, XRD, SEM, TEM, and XPS. The interactions between the nanohybrids compositions were discussed according to the characterization and experimental data. The whole insight of 2,4-dichlorophenol (2,4-DCP) adsorption- dechlorination-desorption was studied in detail, including the pathways, influence factors, dechlorination kinetics and selectivity. Weak acidity (pH=5.0 and 6.5) favored the 2,4-DCP removal. Satisfactory reactivity of the Pd/Fe-Fe3O4@MWCNTs nanohybrids was observed in five consecutive runs, and 99.2%, 89.6%, 92.1%, 99.8%, and 99.9% of 2,4-DCP was removed, respectively. Most of the final product (phenol) was steadily desorbed to the liquid phase, resulted in the re-exposure of active sites on the nanohybrids and maintained a longer activity.
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Affiliation(s)
- Jiang Xu
- State Key Laboratory of Estuarine and Coastal Research, East China Normal University, Shanghai 200062, China.
| | - Zhen Cao
- State Key Laboratory of Estuarine and Coastal Research, East China Normal University, Shanghai 200062, China
| | - Xue Liu
- State Key Laboratory of Estuarine and Coastal Research, East China Normal University, Shanghai 200062, China
| | - Heng Zhao
- State Key Laboratory of Estuarine and Coastal Research, East China Normal University, Shanghai 200062, China
| | - Xi Xiao
- Ocean College, Zhejiang University, Zhoushan 316021, China
| | - Jiaping Wu
- Ocean College, Zhejiang University, Zhoushan 316021, China
| | - Xinhua Xu
- Department of Environmental Engineering, Zhejiang University, Hangzhou 310058, China.
| | - John L Zhou
- School of Civil and Environmental Engineering, University of Technology Sydney, Broadway, NSW 2007, Australia
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Ammar HB. Sono-Fenton process for metronidazole degradation in aqueous solution: Effect of acoustic cavitation and peroxydisulfate anion. ULTRASONICS SONOCHEMISTRY 2016; 33:164-169. [PMID: 27245967 DOI: 10.1016/j.ultsonch.2016.04.035] [Citation(s) in RCA: 55] [Impact Index Per Article: 6.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/07/2016] [Revised: 04/29/2016] [Accepted: 04/30/2016] [Indexed: 06/05/2023]
Abstract
The present work investigates the application of an improved treatment approach based on the ultrasound irradiation as clean technology driven Fenton in the presence of peroxydisulfate anion (S2O8(2-)) for the removal of metronidazole (MTZ) from aqueous solution. The sono-generation of sulfate radicals (SO4(-)) as a stronger oxidizing agent from S2O8(2-) (redox potential of 2.6V) has improved the degradation of MTZ. However, no studies have focused on the removal of MTZ using peroxydisulfate anion under sono-Fenton process. The MTZ concentration measurement during the processing allowed the evaluation of the kinetics of organic matter decay. The results have shown that the degradation of MTZ dependent on Fe(2+)/H2O2 molar ratio, temperature and S2O8(2-) concentration. The MTZ concentration decay follows pseudo first-order kinetics, within the range studied. Sono-Fenton process using low iron and hydrogen peroxide doses was proved to be an efficient method for the elimination of MTZ with high degradation rates. At optimum conditions, 96% of MTZ removal was achieved at 60°C in the presence of 1mM of S2O8(2-).
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Affiliation(s)
- Hafedh Belhadj Ammar
- Electrochemistry and Environmental Laboratory, Department of Materials Engineering, National Engineering School of Sfax, University of Sfax, B.P. 1173, 3038 Sfax, Tunisia.
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38
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Influence of nanoparticle processing and additives on PES casting solution viscosity and cast membrane characteristics. POLYMER 2016. [DOI: 10.1016/j.polymer.2016.04.021] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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39
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Ammar HB, Brahim MB, Abdelhédi R, Samet Y. Enhanced degradation of metronidazole by sunlight via photo-Fenton process under gradual addition of hydrogen peroxide. ACTA ACUST UNITED AC 2016. [DOI: 10.1016/j.molcata.2016.04.029] [Citation(s) in RCA: 34] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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Wang X, Liu P, Fu M, Ma J, Ning P. Novel sequential process for enhanced dye synergistic degradation based on nano zero-valent iron and potassium permanganate. CHEMOSPHERE 2016; 155:39-47. [PMID: 27105151 DOI: 10.1016/j.chemosphere.2016.04.022] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/20/2016] [Revised: 03/14/2016] [Accepted: 04/06/2016] [Indexed: 06/05/2023]
Abstract
A novel synergistic technology based on nano zero-valent iron (NZVI) and potassium permanganate (KMnO4) was developed for treatment of dye wastewater. The synergistic technology was significantly superior, where above 99% of methylene blue (MB) was removed, comparatively, removal efficiencies of MB with the sole technology of NZVI and KMnO4 at pH 6.39 being 52.9% and 63.1%, respectively. The advantages of this technology include (1) the in situ formed materials (manganese (hydr)oxides, iron hydroxides and MnFe oxide), resulting in the stable and high removal efficiency of MB and (2) high removal capacity in a wide range of pH value. Compared with simultaneous addition system of NZVI and KMnO4, MB removal was remarkably improved by sequential addition system, especially when KMnO4 addition time was optimized at 20 min. Analyses of crystal structure (XRD), morphological difference (FE-SEM), element valence and chemical groups (XPS) of NZVI before and after reaction had confirmed the formation of in situ materials, which obviously enhanced removal of MB by oxidation and adsorption. More importantly, the roles of in situ formed materials and degradation mechanism were innovatively investigated, and the results suggested that NCH3 bond of MB molecule was attacked by oxidants (KMnO4 and in situ manganese (hydr)oxides) at position C1 and C9, resulting in cleavage of chromophore. This study provides new insights about an applicable technology for treatment of dye wastewater.
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Affiliation(s)
- Xiangyu Wang
- Faculty of Environmental Science and Engineering, Kunming University of Science and Technology, Kunming 650500, China
| | - Peng Liu
- Faculty of Environmental Science and Engineering, Kunming University of Science and Technology, Kunming 650500, China
| | - Minglai Fu
- Key Laboratory of Urban Pollutant Conversion, Institute of Urban Environment, Chinese Academy of Sciences, Xiamen 361021, China
| | - Jun Ma
- School of Municipal and Environmental Engineering, State Key Laboratory of Urban Water Resources and Environment, Harbin Institute of Technology, Harbin 150090, China
| | - Ping Ning
- Faculty of Environmental Science and Engineering, Kunming University of Science and Technology, Kunming 650500, China.
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Chen H, Cao Y, Wei E, Gong T, Xian Q. Facile synthesis of graphene nano zero-valent iron composites and their efficient removal of trichloronitromethane from drinking water. CHEMOSPHERE 2016; 146:32-39. [PMID: 26706929 DOI: 10.1016/j.chemosphere.2015.11.095] [Citation(s) in RCA: 48] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/18/2015] [Revised: 11/22/2015] [Accepted: 11/24/2015] [Indexed: 06/05/2023]
Abstract
Halonitromethanes (HNMs), as an emerging class of disinfection by-products containing nitrogen (N-DBPs) in drinking water, have possessed public health concerns. Two most studied materials, graphene and nanometer-sized zero-valent iron, have been successfully combined into binary nanocomposites (G-nZVI) via facile carbonization and calcinations of glucose and ferric chloride, which was used in the removal of HNMs from drinking water in this study. When the Fe/C mass ratio was 1:5, the as-prepared G-nZVI hybrids comprised numerous dispersed Fe(0) nanoparticles with a range of 5-10 nm in diameter. Batch experimental results indicated that the as-prepared G-nZVI could effectively remove trichloronitromethane (TCNM), a dominant in the group of HNMs from drinking water. About 99% of initial TCNM could be adsorbed and degraded under 60 mg/L G-nZVI dosage within 120 min. Kinetic studies indicated that the removal of TCNM by G-nZVI followed a pseudo first order rate (R(2) > 0.9). The degradation pathways of TCNM by G-nZVI nanocomposites might include dechlorination and denitration of TCNM. The Fe was in the form of iron oxides in the graphene material shape which was then restored to Fe(0) again via calcinations. These results indicated that the synthesized G-nZVI nanocomposites could be a powerful material to remove HNMs from drinking water.
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Affiliation(s)
- Haifeng Chen
- State Key Laboratory of Pollution Control and Resource Reuse, School of the Environment, Nanjing University, Nanjing, 210023, China
| | - Yu Cao
- State Key Laboratory of Pollution Control and Resource Reuse, School of the Environment, Nanjing University, Nanjing, 210023, China
| | - Enze Wei
- State Key Laboratory of Pollution Control and Resource Reuse, School of the Environment, Nanjing University, Nanjing, 210023, China
| | - Tingting Gong
- State Key Laboratory of Pollution Control and Resource Reuse, School of the Environment, Nanjing University, Nanjing, 210023, China
| | - Qiming Xian
- State Key Laboratory of Pollution Control and Resource Reuse, School of the Environment, Nanjing University, Nanjing, 210023, China.
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Ammar HB, Brahim MB, Abdelhédi R, Samet Y. Green electrochemical process for metronidazole degradation at BDD anode in aqueous solutions via direct and indirect oxidation. Sep Purif Technol 2016. [DOI: 10.1016/j.seppur.2015.11.027] [Citation(s) in RCA: 76] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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Jia H, Wang C. Dechlorination of chlorinated phenols by subnanoscale Pd 0 /Fe 0 intercalated in smectite: pathway, reactivity, and selectivity. JOURNAL OF HAZARDOUS MATERIALS 2015; 300:779-787. [PMID: 26313617 DOI: 10.1016/j.jhazmat.2015.08.017] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/28/2015] [Revised: 08/07/2015] [Accepted: 08/09/2015] [Indexed: 06/04/2023]
Abstract
Smectite clay was employed as templated matrix to prepare subnanoscale Pd(0)/Fe(0) particles, and their components as well as intercalated architectures were well characterized by X-ray energy dispersive spectroscopy (X-EDS) and X-ray diffraction (XRD). Furthermore, as-prepared Pd(0)/Fe(0) subnanoscale nanoparticles were evaluated for their dechlorination effect using chlorinated phenols as model molecules. As a result, pentachlorophenol (PCP) is selectively transformed to phenol in a stepwise dechlorination pathway within 6h, and the dechlorination rate constants show linearly relationship with contents of Pd as its loadings <0.065%. Comparing with PCP, other chlorinated phenols display similar degradation pattern but within much shorter time frame. The dechlorination rate of chlorinated phenols increases with decreasing in number of -Cl attached to aromatic ring, which can be predicted by the total charge of the aromatic ring, exhibiting an inversely linear relationship with the dechlorination rates. While the selectivity of dechlorination depends on the charges associated with the individual aromatic carbon. Chloro-functional groups at the ortho-position are easier to be dechlorinated than that at meta- and para- positions yielding primarily 3,4,5-TCP as intermediate from PCP, further to phenol. The effective dechlorination warrants their potential utilizations in development of in-situ remediation technologies for organic pollutants in contaminated water.
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Affiliation(s)
- Hanzhong Jia
- Laboratory of Environmental Sciences and Technology, Xinjiang Technical Institute of Physics & Chemistry; Key Laboratory of Functional Materials and Devices for Special Environments, Chinese Academy of Sciences, Urumqi 830011, China
| | - Chuanyi Wang
- Laboratory of Environmental Sciences and Technology, Xinjiang Technical Institute of Physics & Chemistry; Key Laboratory of Functional Materials and Devices for Special Environments, Chinese Academy of Sciences, Urumqi 830011, China.
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Pérez T, Garcia-Segura S, El-Ghenymy A, Nava JL, Brillas E. Solar photoelectro-Fenton degradation of the antibiotic metronidazole using a flow plant with a Pt/air-diffusion cell and a CPC photoreactor. Electrochim Acta 2015. [DOI: 10.1016/j.electacta.2015.02.243] [Citation(s) in RCA: 57] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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Yang J, Zhu M, Wang X, Alvarez PJ, Liu K. Poly(vinylidene fluoride) membrane supported nano zero-valent iron for metronidazole removal: Influences of calcium and bicarbonate ions. J Taiwan Inst Chem Eng 2015. [DOI: 10.1016/j.jtice.2014.11.033] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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Tso CP, Shih YH. The reactivity of well-dispersed zerovalent iron nanoparticles toward pentachlorophenol in water. WATER RESEARCH 2015; 72:372-380. [PMID: 25575963 DOI: 10.1016/j.watres.2014.12.038] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/05/2014] [Revised: 11/26/2014] [Accepted: 12/23/2014] [Indexed: 06/04/2023]
Abstract
In order to prevent the aggregation of nanoparticles (NPs), surface modification or the addition of a stabilizer are used for stabilization. However, the real reactivity of NPs is still unclear because of the surface coating. For different physical dispersion methods, the particle stabilization for nanoscale zerovalent iron (NZVI) particles and their reactivity are studied. The particle properties of different preparations and their reactivity toward one polychlorinated aromatic compound, pentachlorophenol (PCP), with different electrolytes are also evaluated. Ultrasonication (US) with magnetic stirring disperses NZVI and Pd/Fe NPs well in water and does not affect the surface redox property a lot under the operating conditions in this study. The well-suspended NZVI cannot dechlorinate PCP but adsorption removal is observed. Compared to shaking, which gives limited removal of PCP (about 43%), Pd/Fe NPs remove 81% and 93% of PCP from water in the US and the US/stirring systems, respectively, which demonstrates that a greater surface area is exposed because of effective dispersion of Pd/Fe NPs. As the Pd doping increases, the dechlorination kinetics of PCP is improved, which shows that a catalyst is needed. With US/stirring, chloride ions do not significantly affect the removal kinetics of PCP, but the removal efficiency increases in the presence of nitrate ions because PCP anions were adsorbed and coagulated by the greater amount of iron (hydro)oxides that are generated from the reduction of nitrate on Pd/Fe. However, bicarbonate ions significantly block the adsorption and reaction sites on the Pd/Fe NP surface with US/stirring. The US/stirring method can be used to evaluate the actual activity of NPs near the nanoscale. The use of Pd/Fe NPs with US/stirring removes PCP from water effectively, even in the presence of common anions expect a high concentration of bicarbonate.
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Affiliation(s)
- Chih-ping Tso
- Department of Agricultural Chemistry, National Taiwan University, No. 1, Sec. 4, Roosevelt Road, Taipei 106, Taiwan, ROC
| | - Yang-hsin Shih
- Department of Agricultural Chemistry, National Taiwan University, No. 1, Sec. 4, Roosevelt Road, Taipei 106, Taiwan, ROC.
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Sikhwivhilu K, Moutloali RM. Functionalized PVDF Membrane-immobilized Fe/Ni Bimetallic Nanoparticles for Catalytic Degradation of Methyl Orange Dye: A Comparative Study. ACTA ACUST UNITED AC 2015. [DOI: 10.1016/j.matpr.2015.08.037] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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48
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Liang DW, Yang YH, Xu WW, Peng SK, Lu SF, Xiang Y. Nonionic surfactant greatly enhances the reductive debromination of polybrominated diphenyl ethers by nanoscale zero-valent iron: mechanism and kinetics. JOURNAL OF HAZARDOUS MATERIALS 2014; 278:592-596. [PMID: 25019577 DOI: 10.1016/j.jhazmat.2014.06.030] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/29/2014] [Revised: 05/26/2014] [Accepted: 06/07/2014] [Indexed: 06/03/2023]
Abstract
Nanoscale zero-valent iron (nZVI) has been considered as an effective agent for reductive debromination of polybrominated diphenyl ethers (PBDEs). But the high lipophilicity of PBDEs will hinder their debromination owing to the inefficient contact of PBDEs with nZVI. In this study, different ionic forms of surfactants were investigated aiming to promote PBDE debromination, and the beneficial effects of surfactant were found to be: nonionic polyethylene glycol octylphenol ether (Triton X-100, TX)>cationic cetylpyridinium chloride (CPC)>anionic sodium dodecyl benzenesulfonate (SDDBS). Except for with SDDBS, the promotion effect for PBDE debromination was positively related to the surfactant concentrations until a critical micelle concentration (CMC). The debromination process of octa-BDE and its intermediates could be described as a consecutive reaction. The corresponding rate constants (k) for the debromination of parent octa-BDE (including nona- to hepta-BDEs), the intermediates hexa-, penta-, and tetra-BDEs are 1.24 × 10(-1) h(-1), 8.97 × 10(-2) h(-1), 6.50 × 10(-2) h(-1) and 2.37 × 10(-3) h(-1), respectively.
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Affiliation(s)
- Da-wei Liang
- School of Chemistry & Environment, Beihang University (BUAA), 37 Xueyuan Rd, Beijing 100191, China
| | - Yu-han Yang
- School of Chemistry & Environment, Beihang University (BUAA), 37 Xueyuan Rd, Beijing 100191, China
| | - Wei-wei Xu
- School of Chemistry & Environment, Beihang University (BUAA), 37 Xueyuan Rd, Beijing 100191, China
| | - Si-kan Peng
- School of Chemistry & Environment, Beihang University (BUAA), 37 Xueyuan Rd, Beijing 100191, China
| | - Shan-fu Lu
- School of Chemistry & Environment, Beihang University (BUAA), 37 Xueyuan Rd, Beijing 100191, China
| | - Yan Xiang
- School of Chemistry & Environment, Beihang University (BUAA), 37 Xueyuan Rd, Beijing 100191, China.
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