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Wang L, Tang M, Jiang H, Dai J, Cheng R, Luo B, Yang L, Du G, Gao W. Sustainable, efficient, and synergistic photocatalytic degradation toward organic dyes and formaldehyde gas via Cu 2O NPs@wood. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2024; 351:119676. [PMID: 38052144 DOI: 10.1016/j.jenvman.2023.119676] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/23/2023] [Revised: 11/16/2023] [Accepted: 11/20/2023] [Indexed: 12/07/2023]
Abstract
Cuprous oxide (Cu2O) nanoparticles (NPs) was anchored on wood by simple spraying method, then both soft and hard wood has been endowed efficient function photocatalytic degradation toward organic dyes and formaldehyde gas synergistically. The best recycle ability of wood based photocatalyst toward organic pollutants was achieved, which was characterized by photocatalytic degradation efficiency of methylene blue (MB) more than 95% after 100 cycles, and formaldehyde gas over 85% after 60 cycles. Cu2O NPs@wood performed much lower forbidden bandwidth (Eg), which accelerated to generate much more radical of e- and finally promoted the capacity of photocatalytic degradation. The proposed Cu2O NPs@wood catalysts has potential to be applied both in the field of wastewater and air pollution remediation.
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Affiliation(s)
- Lingling Wang
- Yunnan Key Laboratory of Wood Adhesives and Glue Products, Southwest Forestry University, Kunming, Yunnan Province, 650224, People's Republic of China; College of Material and Chemistry Engineering, Southwest Forestry University, Kunming, Yunnan Province, 650224, People's Republic of China
| | - Maojie Tang
- Yunnan Key Laboratory of Wood Adhesives and Glue Products, Southwest Forestry University, Kunming, Yunnan Province, 650224, People's Republic of China; College of Material and Chemistry Engineering, Southwest Forestry University, Kunming, Yunnan Province, 650224, People's Republic of China
| | - Haiqiu Jiang
- Yunnan Key Laboratory of Wood Adhesives and Glue Products, Southwest Forestry University, Kunming, Yunnan Province, 650224, People's Republic of China; College of Material and Chemistry Engineering, Southwest Forestry University, Kunming, Yunnan Province, 650224, People's Republic of China
| | - Jiahui Dai
- Yunnan Key Laboratory of Wood Adhesives and Glue Products, Southwest Forestry University, Kunming, Yunnan Province, 650224, People's Republic of China; College of Material and Chemistry Engineering, Southwest Forestry University, Kunming, Yunnan Province, 650224, People's Republic of China
| | - Ruifeng Cheng
- Yunnan Key Laboratory of Wood Adhesives and Glue Products, Southwest Forestry University, Kunming, Yunnan Province, 650224, People's Republic of China; College of Material and Chemistry Engineering, Southwest Forestry University, Kunming, Yunnan Province, 650224, People's Republic of China
| | - Bei Luo
- Yunnan Key Laboratory of Wood Adhesives and Glue Products, Southwest Forestry University, Kunming, Yunnan Province, 650224, People's Republic of China; College of Material and Chemistry Engineering, Southwest Forestry University, Kunming, Yunnan Province, 650224, People's Republic of China
| | - Long Yang
- Yunnan Key Laboratory of Wood Adhesives and Glue Products, Southwest Forestry University, Kunming, Yunnan Province, 650224, People's Republic of China; College of Material and Chemistry Engineering, Southwest Forestry University, Kunming, Yunnan Province, 650224, People's Republic of China
| | - Guanben Du
- Yunnan Key Laboratory of Wood Adhesives and Glue Products, Southwest Forestry University, Kunming, Yunnan Province, 650224, People's Republic of China; College of Material and Chemistry Engineering, Southwest Forestry University, Kunming, Yunnan Province, 650224, People's Republic of China
| | - Wei Gao
- Yunnan Key Laboratory of Wood Adhesives and Glue Products, Southwest Forestry University, Kunming, Yunnan Province, 650224, People's Republic of China; College of Material and Chemistry Engineering, Southwest Forestry University, Kunming, Yunnan Province, 650224, People's Republic of China.
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Larralde-Piña IA, Acuña-Askar K, Villanueva-Rodríguez M, Guzmán-Mar JL, Murillo-Sierra JC, Ruiz-Ruiz EJ. An optimized electro-fenton pretreatment for the degradation and mineralization of a mixture of ofloxacin, norfloxacin, and ciprofloxacin. CHEMOSPHERE 2023; 344:140339. [PMID: 37820878 DOI: 10.1016/j.chemosphere.2023.140339] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/22/2023] [Revised: 09/18/2023] [Accepted: 09/28/2023] [Indexed: 10/13/2023]
Abstract
The electro-Fenton process (EFP) is a powerful advanced oxidation process beneficial to treating recalcitrant contaminants, and there has been a continuing interest in combining this technology to enhance the efficiency of conventional wastewater treatment processes. In this work, an optimized EFP process is performed as pretreatment for the degradation and mineralization of three blank fluoroquinolones (FQs) drugs: ofloxacin (OFL), norfloxacin (NOR), and ciprofloxacin (CIP). The optimization of the experiment was carried out using a Box-Behnken experimental design. Faster and complete degradation of the drugs mixture was achieved in 90 min with 61.12 ± 2.0% of mineralization in 180 min, under the optimized conditions: j = 244.0 mA cm-2, [Fe2+] = 0.31 mM, and [FQs] = 87.0 mg L-1. Furthermore, a low toxicity effluent was obtained in 90 min of the experiment, according to bioassay toxicity with Vibrio fischeri. Five short-chain carboxylic acids, including oxalic, maleic, oxamic, formic, and fumaric acids, were detected and quantified, in addition to F- and NO3- inorganic ions. The inhibition of the reactive oxygen species with scavenger proof was also evaluated in this paper.
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Affiliation(s)
- I A Larralde-Piña
- Universidad Autónoma de Nuevo León (UANL), Facultad de Ciencias Químicas, Cd. Universitaria, San Nicolás de Los Garza, Nuevo León, C.P. 66455, México
| | - K Acuña-Askar
- Universidad Autónoma de Nuevo León (UANL), Facultad de Medicina, Depto. de Microbiología, Monterrey, Nuevo León, C.P. 64460, México
| | - M Villanueva-Rodríguez
- Universidad Autónoma de Nuevo León (UANL), Facultad de Ciencias Químicas, Cd. Universitaria, San Nicolás de Los Garza, Nuevo León, C.P. 66455, México
| | - J L Guzmán-Mar
- Universidad Autónoma de Nuevo León (UANL), Facultad de Ciencias Químicas, Cd. Universitaria, San Nicolás de Los Garza, Nuevo León, C.P. 66455, México
| | - J C Murillo-Sierra
- Universidad de Concepción, Facultad de Ciencias Químicas, Edmundo Larenas 129, Concepción, Chile
| | - E J Ruiz-Ruiz
- Universidad Autónoma de Nuevo León (UANL), Facultad de Ciencias Químicas, Cd. Universitaria, San Nicolás de Los Garza, Nuevo León, C.P. 66455, México.
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Tang L, Li A, Kong M, Dionysiou DD, Duan X. Effects of wavelength on the treatment of contaminants of emerging concern by UV-assisted homogeneous advanced oxidation/reduction processes. THE SCIENCE OF THE TOTAL ENVIRONMENT 2023; 899:165625. [PMID: 37481088 DOI: 10.1016/j.scitotenv.2023.165625] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/08/2023] [Revised: 06/09/2023] [Accepted: 07/16/2023] [Indexed: 07/24/2023]
Abstract
Pollutants of emerging concern in aqueous environments present a significant threat to both the aquatic ecosystem and human health due to their rapid transfer. Among the various treatment approaches to remove those pollutants, UV-assisted advanced oxidation/reduction processes are considered competent and cost-effective. The treatment effectiveness is highly dependent on the wavelength of the UV irradiation used. This article systematically discusses the wavelength dependency of direct photolysis, UV/peroxides, UV/chlor(am)ine, UV/ClO2, UV/natural organic matter, UV/nitrate, and UV/sulfite on the transformation of contaminants. Altering wavelengths affects the photolysis of target pollutants, photo-decay of the oxidant/reductant, and quantum yields of reactive species generated in the processes, which significantly impact the degradation rates and formation of disinfection byproducts. In general, the degradation of contaminants is most efficient when using wavelengths that closely match the highest molar absorption coefficients of the target pollutants or the oxidizing/reducing agents, and the contribution of pollutant absorption is generally more significant. By matching the wavelength with the peak absorbance of target compounds and oxidants/reductants, researchers and engineers have the potential to optimize the UV wavelengths used in UV-AO/RPs to effectively remove pollutants and control the formation of disinfection byproducts.
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Affiliation(s)
- Liang Tang
- Key Laboratory of Organic Compound Pollution Control Engineering (MOE), School of Environmental and Chemical Engineering, Shanghai University, Shanghai 200444, China
| | - Aozhou Li
- Key Laboratory of Organic Compound Pollution Control Engineering (MOE), School of Environmental and Chemical Engineering, Shanghai University, Shanghai 200444, China
| | - Minghao Kong
- Environmental Engineering and Science Program, Department of Chemical and Environmental Engineering, University of Cincinnati, Cincinnati, OH 45221, USA
| | - Dionysios D Dionysiou
- Environmental Engineering and Science Program, Department of Chemical and Environmental Engineering, University of Cincinnati, Cincinnati, OH 45221, USA.
| | - Xiaodi Duan
- Key Laboratory of Organic Compound Pollution Control Engineering (MOE), School of Environmental and Chemical Engineering, Shanghai University, Shanghai 200444, China.
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Kubiak A. Comparative study of TiO 2-Fe 3O 4 photocatalysts synthesized by conventional and microwave methods for metronidazole removal. Sci Rep 2023; 13:12075. [PMID: 37495674 PMCID: PMC10371990 DOI: 10.1038/s41598-023-39342-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2023] [Accepted: 07/24/2023] [Indexed: 07/28/2023] Open
Abstract
This study focused on a direct comparison of conventional hydrothermal and microwave treatment during the synthesis of TiO2-Fe3O4 photocatalyst, which is an effective catalyst for decomposing metronidazole. The photocatalyst underwent various characterization analyses, including X-ray diffraction, Raman spectroscopy, transmission electron microscopy, energy dispersive X-ray, and diffuse reflectance spectroscopy. The Raman spectroscopy analysis revealed that the materials obtained through the conventional hydrothermal treatment consisted of separate phases of anatase and magnetite. On the other hand, the materials synthesized using the microwave process showed a noticeable shift in the Eg band (143 cm-1) and its half-width towards higher wavenumbers. This shift is likely due to the introduction of Fe ions into the TiO2 lattice. Additionally, both conventional hydrothermal and microwave synthesis routes produced TiO2-Fe3O4 systems with superparamagnetic properties, as demonstrated by SQUID magnetic measurements. The TEM analysis revealed that the materials synthesized using the microwave process exhibited higher homogeneity, with no noticeable large aggregates observed. Finally, this work proposed a convenient LED photoreactor that effectively utilized the photo-oxidative properties of TiO2-Fe3O4 photocatalysts to remove metronidazole. Combining photoactive TiO2-Fe3O4 catalysts with an energy-efficient LED reactor resulted in a low electrical energy per order (EEO).
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Affiliation(s)
- Adam Kubiak
- Faculty of Chemistry, Adam Mickiewicz University, Uniwersytetu Poznanskiego 8, 61614, Poznan, Poland.
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Wang T, Deng L, Shen J, Tan C, Hu J, Singh RP. Formation, toxicity, and mechanisms of halonitromethanes from poly(diallyl dimethyl ammonium chloride) during UV/monochloramine disinfection in the absence and presence of bromide ion. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2023; 338:117819. [PMID: 36996559 DOI: 10.1016/j.jenvman.2023.117819] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/05/2023] [Revised: 03/22/2023] [Accepted: 03/25/2023] [Indexed: 06/19/2023]
Abstract
Bromide ion (Br-) is known as a prevalent component in water environments, which exhibits significant impacts on halonitromethanes (HNMs) formation. This study was performed to explore and compare the formation, toxicity, and mechanisms of HNMs from poly(diallyl dimethyl ammonium chloride) (PDDACl) in the absence and presence of Br- in the UV/monochloramine (UV/NH2Cl) disinfection process. The results showed that chlorinated HNMs were found in the absence of Br-, while brominated (chlorinated) HNMs and brominated HNMs were found in the presence of Br-. Furthermore, the peaks of total HNMs were promoted by 2.0 and 2.4 times, respectively when 1.0 and 2.0 mg L-1 Br- were added. Also, the peaks of total HNMs were enhanced with the increase of the NH2Cl dosage, which were reduced with the increase of pH. It should be noted that Br- induced higher toxicity of HNMs, and the cytotoxicity and genotoxicity of HNMs with the addition of 2.0 mg L-1 Br- were 78.0 and 3.7 times those without the addition of Br-, respectively. Meanwhile, both the reaction mechanisms of HNMs produced from PDDACl were speculated in the absence and presence of Br-. Finally, different HNMs species and yields were discovered in these two real water samples compared to those in simulated waters. These findings of this work will be conducive to understanding the significance of Br- affecting HNMs formation and toxicity in the disinfection process.
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Affiliation(s)
- Tao Wang
- Department of Municipal Engineering, Southeast University, Nanjing, 211189, China
| | - Lin Deng
- Department of Municipal Engineering, Southeast University, Nanjing, 211189, China.
| | - Jiaxin Shen
- Department of Municipal Engineering, Southeast University, Nanjing, 211189, China
| | - Chaoqun Tan
- Department of Municipal Engineering, Southeast University, Nanjing, 211189, China
| | - Jun Hu
- Department of Municipal Engineering, Southeast University, Nanjing, 211189, China
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Gao Y, Ning H, Rao Y, Li K, Zeng C, Gao N. Efficient elimination of phenazone by an electro-assisted Fe 3+-EDDS/PS process at neutral pH: Kinetics, mechanistic insights and toxicity evaluation. CHEMOSPHERE 2023; 328:138598. [PMID: 37028723 DOI: 10.1016/j.chemosphere.2023.138598] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/29/2023] [Revised: 04/01/2023] [Accepted: 04/03/2023] [Indexed: 06/19/2023]
Abstract
The feasibility of the degradation of phenazone (PNZ), a common anti-inflammatory drug used for reducing pain and fever, in water at neutral pH by an electrochemically assisted Fe3+-ethylenediamine disuccinate-activated persulfate process (EC/Fe3+-EDDS/PS) was investigated. The efficient removal of PNZ at neutral pH condition was mainly attributed to the continuous activation of PS via electrochemically driven regenerated Fe2+ from a Fe3+-EDDS complex at the cathode. The influence of several critical parameters, including current density, Fe3+ concentration, EDDS to Fe3+ molar ratio, and PS dosage, on PNZ degradation was evaluated and optimized. Both hydroxyl radicals (•OH) and sulfate radicals (SO4●-) were considered major reactive species responsible for PNZ degradation. To understand the mechanistic model of action at the molecular level, the thermodynamic and kinetic behaviors of the reactions between PNZ with •OH and SO4●- were theoretically calculated using a density functional theory (DFT) method. The results revealed that radical adduct formation (RAF) is the most favorable pathway for the •OH-driven oxidation of PNZ, while single electron transfer (SET) appears to be the dominant pathway for the reaction of SO4●- with PNZ. In total, thirteen oxidation intermediates were identified, and hydroxylation, pyrazole ring opening, dephenylization, and demethylation were speculated to be the major degradation pathways. Furthermore, predicted toxicity to aquatic organisms indicated that PNZ degradation resulted in products that were less harmful. However, the developmental toxicity of PNZ and its intermediate products should be further investigated in the environment. The findings of this work demonstrate the viability of effectively removing organic contaminants in water at near-neutral pH by using EDDS chelation combined with electrochemistry in a Fe3+/persulfate system.
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Affiliation(s)
- Yuqiong Gao
- School of Environment and Architecture, University of Shanghai for Science and Technology, Shanghai, 200093, China.
| | - Han Ning
- School of Environment and Architecture, University of Shanghai for Science and Technology, Shanghai, 200093, China
| | - Yanyan Rao
- School of Environment and Architecture, University of Shanghai for Science and Technology, Shanghai, 200093, China
| | - Kexuan Li
- School of Environment and Architecture, University of Shanghai for Science and Technology, Shanghai, 200093, China
| | - Chaole Zeng
- School of Environment and Architecture, University of Shanghai for Science and Technology, Shanghai, 200093, China
| | - Naiyun Gao
- College of Environmental Science and Engineering, Tongji University, Shanghai, 200092, China
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Pereira TC, Flores EMM, Abramova AV, Verdini F, Calcio Gaudino E, Bucciol F, Cravotto G. Simultaneous hydrodynamic cavitation and glow plasma discharge for the degradation of metronidazole in drinking water. ULTRASONICS SONOCHEMISTRY 2023; 95:106388. [PMID: 37011519 PMCID: PMC10457580 DOI: 10.1016/j.ultsonch.2023.106388] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/27/2023] [Revised: 03/17/2023] [Accepted: 03/26/2023] [Indexed: 06/19/2023]
Abstract
In this study, a novel hydrodynamic cavitation unit combined with a glow plasma discharge system (HC-GPD) was proposed for the degradation of pharmaceutical compounds in drinking water. Metronidazole (MNZ), a commonly used broad-spectrum antibiotic, was selected to demonstrate the potential of the proposed system. Cavitation bubbles generated by hydrodynamic cavitation (HC) can provide a pathway for charge conduction during glow plasma discharge (GPD). The synergistic effect between HC and GPD promotes the production of hydroxyl radicals, emission of UV light, and shock waves for MNZ degradation. Sonochemical dosimetry provided information on the enhanced formation of hydroxyl radicals during glow plasma discharge compared to hydrodynamic cavitation alone. Experimental results showed a MNZ degradation of 14% in 15 min for the HC alone (solution initially containing 300 × 10-6 mol L-1 MNZ). In experiments with the HC-GPD system, MNZ degradation of 90% in 15 min was detected. No significant differences were observed in MNZ degradation in acidic and alkaline solutions. MNZ degradation was also studied in the presence of inorganic anions. Experimental results showed that the system is suitable for the treatment of solutions with conductivity up to 1500 × 10-6 S cm-1. The results of sonochemical dosimetry showed the formation of oxidant species of 0.15 × 10-3 mol H2O2 L-1 in the HC system after 15 min. For the HC-GPD system, the concentration of oxidant species after 15 min reached 13 × 10-3 molH2O2L-1. Based on these results, the potential of combining HC and GPD systems for water treatment was demonstrated. The present work provided useful information on the synergistic effect between hydrodynamic cavitation and glow plasma discharge and their application for the degradation of antibiotics in drinking water.
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Affiliation(s)
| | | | - Anna V Abramova
- Kurnakov Institute of General and Inorganic Chemistry of the Russian Academy of Sciences, Moscow, Russia
| | - Federico Verdini
- Department of Drug Science and Technology, Turin University, Turin, Italy
| | | | - Fabio Bucciol
- Department of Drug Science and Technology, Turin University, Turin, Italy
| | - Giancarlo Cravotto
- Department of Drug Science and Technology, Turin University, Turin, Italy
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Yu X, Mao C, Wang W, Kulshrestha S, Zhang P, Usman M, Zong S, Hilal MG, Fang Y, Han H, Li X. Reduction of metronidazole in municipal wastewater and protection of activated sludge system using a novel immobilized Aspergillus tabacinus LZ-M. BIORESOURCE TECHNOLOGY 2023; 369:128509. [PMID: 36538960 DOI: 10.1016/j.biortech.2022.128509] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/08/2022] [Revised: 12/15/2022] [Accepted: 12/16/2022] [Indexed: 06/17/2023]
Abstract
Metronidazole (MNZ) accumulation inhibits municipal wastewater treatment bio-systems, and an effective solution to augment anaerobic activated sludge (AAS) is required. This research discovered that Aspergillus tabacinus LZ-M could degrade 77.39% of MNZ at 5 mg/L. MNZ was metabolized into urea, and the enzymes involved in its degradation were aminotransferase, methyltransferase, monooxygenase, and CN cleavage hydrolase. The strain was immobilized in polyurethane foam and used in AAS for the treatment of MNZ-containing municipal wastewater. The results showed that, using immobilized LZ-M, MNZ was completely removed, and the degradation efficiency of wastewater's chemical oxygen demand (COD) was increased from 11.7% to 83.31%. The extracellular polymer and ROS levels indicated that MNZ's toxicity on AAS was reduced. Furthermore, bioaugmentation stabilized its microbial community, and decreased MNZ resistance genes. These observations confirm that the immobilized fungi are effective in protecting AAS against antibiotic contamination in the treatment process of municipal wastewater.
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Affiliation(s)
- Xuan Yu
- Ministry of Education Key Laboratory of Cell Activities and Stress Adaptations, School of Life Sciences, Lanzhou University, Tianshui South Road #222, Lanzhou 730000, Gansu, China
| | - Chunlan Mao
- Ministry of Education Key Laboratory of Cell Activities and Stress Adaptations, School of Life Sciences, Lanzhou University, Tianshui South Road #222, Lanzhou 730000, Gansu, China
| | - Wenxue Wang
- Ministry of Education Key Laboratory of Cell Activities and Stress Adaptations, School of Life Sciences, Lanzhou University, Tianshui South Road #222, Lanzhou 730000, Gansu, China
| | - Saurabh Kulshrestha
- School of Biotechnology Faculty of Applied Sciences and Biotechnology, Shoolini University of Biotechnology and Management Sciences, Solan 173212, Himachal Pradesh, India
| | - Peng Zhang
- Key Laboratory for Resources Utilization Technology of Unconventional Water of Gansu Province, Gansu Academy of Membrane Science and Technology, Duanjiatanlu #1272, Lanzhou 730020, Gansu, China
| | - Muhammad Usman
- State Key Laboratory of Grassland Agroecosystems, Key Laboratory of Grassland Livestock Industry Innovation, Ministry of Agriculture and Rural Affairs, College of Pastoral Agriculture Science and Technology, Lanzhou University, Lanzhou 730020, Gansu, China
| | - Simin Zong
- Ministry of Education Key Laboratory of Cell Activities and Stress Adaptations, School of Life Sciences, Lanzhou University, Tianshui South Road #222, Lanzhou 730000, Gansu, China
| | - Mian Gul Hilal
- Ministry of Education Key Laboratory of Cell Activities and Stress Adaptations, School of Life Sciences, Lanzhou University, Tianshui South Road #222, Lanzhou 730000, Gansu, China
| | - Yitian Fang
- State Key Laboratory of Microbial Metabolism, School of Life Sciences and Biotechnology, Shanghai Jiao Tong University, Shanghai 200240, China
| | - Huawen Han
- Ministry of Education Key Laboratory of Cell Activities and Stress Adaptations, School of Life Sciences, Lanzhou University, Tianshui South Road #222, Lanzhou 730000, Gansu, China
| | - Xiangkai Li
- Ministry of Education Key Laboratory of Cell Activities and Stress Adaptations, School of Life Sciences, Lanzhou University, Tianshui South Road #222, Lanzhou 730000, Gansu, China.
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Zhu Y, Li J, Yan Z, Zhao N, Yang X. Developing Carbon Dots with Room-Temperature Phosphorescence for the Dual-Signal Detection of Metronidazole. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2022; 38:15442-15450. [PMID: 36455258 DOI: 10.1021/acs.langmuir.2c02886] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/17/2023]
Abstract
Room-temperature phosphorescent carbon dots (CDs) show the advanced property owing to their dual signal; howbeit, acquiring the efficient phosphorescence of CDs is still challengeable. Here, we proposed one type of CD doped with nitrogen through the microwave method, which exhibited the obvious blue fluorescence in aqueous solution and green phosphorescence immobilized on filter paper, while diethylenetriamine pentamethylene phosphonic acid provided the source of carbon and nitrogen. Importantly, introducing metronidazole (MNZ) into the CDs leads to their simultaneous decrease in both fluorescence and phosphorescence, and thus, we successfully established a dual-signal strategy for detecting MNZ. Likewise, this fluorescent detection showed the linear range of 2-200 μM and the phosphorescent way of 50-2000 μM. Meanwhile, the corresponding detection mechanism was also explored, and both the quenched fluorescence and phosphorescence of CDs were mainly due to the occurrence of the electron transfer and internal filtration effect between CDs and MNZ. Additionally, we employed these CDs as the fluorescent and phosphorescent inks for painting and information encryption.
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Affiliation(s)
- Ying Zhu
- College of Pharmaceutical Sciences, Southwest University, Chongqing400715, China
| | - Jiankang Li
- College of Pharmaceutical Sciences, Southwest University, Chongqing400715, China
| | - Zihao Yan
- College of Pharmaceutical Sciences, Southwest University, Chongqing400715, China
| | - Na Zhao
- Department of Respiratory and Critical Care Medicine, The Ninth People's Hospital of Chongqing, Chongqing400700, China
| | - Xiaoming Yang
- College of Pharmaceutical Sciences, Southwest University, Chongqing400715, China
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Hoang NT, Manh TD, Nguyen VT, Thy Nga NT, Mwazighe FM, Nhi BD, Hoang HY, Chang SW, Chung WJ, Nguyen DD. Kinetic study on methylene blue removal from aqueous solution using UV/chlorine process and its combination with other advanced oxidation processes. CHEMOSPHERE 2022; 308:136457. [PMID: 36116628 DOI: 10.1016/j.chemosphere.2022.136457] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/30/2022] [Revised: 08/25/2022] [Accepted: 09/11/2022] [Indexed: 06/15/2023]
Abstract
This study investigated the kinetic degradation of methylene blue (MB) by a UV/chlorine process and its combination with other advanced oxidation processes. The ∙OH and reactive chlorine species (RCS: Cl∙, ClO∙, etc.) were the primary reactive species, which accounted for 56.7% and 37.6% of MB degradation at pH 7, respectively. The second-order rate constant of Cl∙ towards MB was calculated to be 2.8 × 109 M-1 s-1. When the pH increased from 3 to 7, kMB by ∙OH increased from 0.15 to 0.21 min-1 before being reduced to 0.11 min-1 at pH 11. kMB by RCS continuously reduced from 0.16 to 0.13 min-1 when the pH was increased to 11. Humic acid (HA), Br-, and Cl- inhibited the degradation with kMB in the order: kMB (in HA) < kMB (in Br-) < kMB (in Cl-). HCO3- increased kMB from 0.37 to 0.48 min-1. The experimental and modeling methods fit well, indicating the effectiveness of using Kintecus® in predicting concentrations of free radicals in complex water matrices. TOC removal was achieved at 60% after 30 min in a control process and it was strongly inhibited by the presence of HA, with 22% removal achieved at 5 mgc L-1 HA. UV/chlorine/electrochemical oxidation (UV/chlorine/EO) significantly improves kMB from 0.37 to 0.94 min-1 at a high current (240 mA), while UV/chlorine/H2O2 decreased kMB at a low concentration of 0.01 mM H2O2 (kMB decreased by 6.1%). The results indicate that the energy cost for UV irradiation was the main cost in MB treatment in both UV/chlorine and UV/persulfate (UV/PS) processes, accounting for 91% and 84%, respectively.
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Affiliation(s)
- Nguyen Tien Hoang
- The University of Da Nang, University of Science and Education, 459 Ton Duc Thang st., Lien Chieu, Da Nang 550000, Viet Nam.
| | - Tran Duc Manh
- The University of Da Nang, University of Science and Education, 459 Ton Duc Thang st., Lien Chieu, Da Nang 550000, Viet Nam
| | - Vo Thang Nguyen
- The University of Da Nang, University of Science and Education, 459 Ton Duc Thang st., Lien Chieu, Da Nang 550000, Viet Nam
| | - Nguyen Thi Thy Nga
- The University of Da Nang, University of Science and Education, 459 Ton Duc Thang st., Lien Chieu, Da Nang 550000, Viet Nam
| | - Fredrick M Mwazighe
- Department of Chemistry, Faculty of Science and Technology, University of Nairobi, P. O. Box 30197, 00100, Nairobi, Kenya
| | - Bui D Nhi
- Faculty of Chemical and Environmental Technology, Viet Tri University of Industry, Phu Tho, Viet Nam.
| | - Hien Y Hoang
- Center for Advanced Chemistry, Institute of Research and Development, Duy Tan University, 03 Quang Trung, Danang, 550000, Viet Nam; The Faculty of Environmental and Chemical Engineering, Duy Tan University, 03 Quang Trung, Danang, 550000, Viet Nam
| | - S Woong Chang
- Department of Environmental Energy Engineering, Kyonggi University, 442-760, Republic of Korea
| | - W Jin Chung
- Department of Environmental Energy Engineering, Kyonggi University, 442-760, Republic of Korea
| | - D Duc Nguyen
- Department of Environmental Energy Engineering, Kyonggi University, 442-760, Republic of Korea; Faculty of Environmental and Food Engineering, Nguyen Tat Thanh University, 300A Nguyen Tat Thanh, District 4, HCM City, 755414, Viet Nam.
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11
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Lu Z, Ling Y, Sun W, Liu C, Mao T, Ao X, Huang T. Antibiotics degradation by UV/chlor(am)ine advanced oxidation processes: A comprehensive review. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2022; 308:119673. [PMID: 35760199 DOI: 10.1016/j.envpol.2022.119673] [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: 01/12/2022] [Revised: 05/21/2022] [Accepted: 06/20/2022] [Indexed: 06/15/2023]
Abstract
Antibiotics are emerging contaminants in aquatic environments which pose serious risks to the ecological environment and human health. Advanced oxidation processes (AOPs) based on ultraviolet (UV) light have good application prospects for antibiotic degradation. As new and developing UV-AOPs, UV/chlorine and derived UV/chloramine processes have attracted increasing attention due to the production of highly reactive radicals (e.g., hydroxyl radical, reactive chlorine species, and reactive nitrogen species) and also because they can provide long-lasting disinfection. In this review, the main reaction pathways of radicals formed during the UV/chlor (am)ine process are proposed. The degradation efficiency, influencing factors, generation of disinfection by-products (DBPs), and changes in toxicity that occur during antibiotic degradation by UV/chlor (am)ine are reviewed. Based on the statistics and analysis of published results, the effects caused by energy consumption, defined as electrical energy per order (EE/O), increase in the following order: UV/chlorine < UV/peroxydisulfate (PDS)< UV/H2O2 < UV/persulfate (PS) < 265 nm and 285 nm UV-LED/chlorine (EE/O). Some inherent problems that affect the UV/chlor (am)ine processes and prospects for future research are proposed. The use of UV/chlor (am)ine AOPs is a rich field of research and has promising future applications, and this review provides a theoretical basis for that.
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Affiliation(s)
- Zedong Lu
- School of Environment, Tsinghua University, Beijing, 100084, China
| | - Yanchen Ling
- School of Environment, Tsinghua University, Beijing, 100084, China; Suzhou University of Science and Technology, Suzhou, 215009, China
| | - Wenjun Sun
- School of Environment, Tsinghua University, Beijing, 100084, China; Research Institute for Environmental Innovation (Suzhou) Tsinghua, Suzhou, 215163, China.
| | - Chaoran Liu
- Beijing Waterworks Group Co., LTD, Beijing, 100031, China
| | - Ted Mao
- Research Institute for Environmental Innovation (Suzhou) Tsinghua, Suzhou, 215163, China; MW Technologies, Inc., London, Ontario, Canada
| | - Xiuwei Ao
- School of Environment, Tsinghua University, Beijing, 100084, China
| | - Tianyin Huang
- Suzhou University of Science and Technology, Suzhou, 215009, China
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12
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Wojnárovits L, Wang J, Chu L, Takács E. Rate constants of chlorine atom reactions with organic molecules in aqueous solutions, an overview. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2022; 29:55492-55513. [PMID: 35688978 PMCID: PMC9374632 DOI: 10.1007/s11356-022-20807-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/08/2022] [Accepted: 05/10/2022] [Indexed: 05/15/2023]
Abstract
Rate constants of chlorine atom (Cl•) reactions (kCl•) determined using a large variation of experimental methods, including transient measurements, steady-state and computation techniques, were collected from the literature and were discussed together with the reaction mechanisms. The kCl• values are generally in the 108-109 mol-1 dm3 s-1 range when the basic reaction between the Cl• and the target molecule is H-atom abstraction. When Cl• addition to double bonds dominates the interaction, the kCl• values are in the 1 × 109-2 × 1010 mol-1 dm3 s-1 range. In the kCl• = 1 × 1010-4 × 1010 mol-1 dm3 s-1 range, single-electron-transfer reactions may also contribute to the mechanism. The Cl• reactions with organic molecules in many respects are similar to those of •OH, albeit Cl• seems to be less selective as •OH. However, there is an important difference, as opposed to Cl• in the case of •OH single-electron-transfer reactions have minor importance. The uncertainty of Cl• rate constant determinations is much higher than those of •OH. Since Cl• reactions play very important role in the emerging UV/chlorine water purification technology, some standardization of the rate constant measuring techniques and more kCl• measurements are recommended.
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Affiliation(s)
- László Wojnárovits
- Institute for Energy Security and Environmental Safety, Centre for Energy Research, Radiation Chemistry Department, ELKH, Budapest, Hungary
| | - Jianlong Wang
- Institute of Nuclear and New Energy Technology, Tsinghua University, Beijing, 100084, People's Republic of China
| | - Libing Chu
- Institute of Nuclear and New Energy Technology, Tsinghua University, Beijing, 100084, People's Republic of China
| | - Erzsébet Takács
- Institute for Energy Security and Environmental Safety, Centre for Energy Research, Radiation Chemistry Department, ELKH, Budapest, Hungary.
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13
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Wu M, Xu M, Yang J, Wang Y, Lu B, Liu H, Chen R. Iron phosphide for photo-assisted peroxodisulfate activation in metronidazole degradation. Sep Purif Technol 2022. [DOI: 10.1016/j.seppur.2022.121039] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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14
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Rathi A, Basu S, Barman S. Efficient eradication of antibiotic and dye by C-dots@zeolite nanocomposites: Performance evaluation, and degraded products analysis. CHEMOSPHERE 2022; 298:134260. [PMID: 35271900 DOI: 10.1016/j.chemosphere.2022.134260] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/12/2021] [Revised: 01/07/2022] [Accepted: 03/06/2022] [Indexed: 06/14/2023]
Abstract
Metronidazole (MET), a recalcitrant antibiotic from the nitro-imidazole family and commercially used Rhodamine B (RhB) dye, contributes a huge to water pollution, which needs to eliminate, preferably by photocatalytic degradation technique. The Cdots@zeolite (CDZ) nanocomposites with different weight ratios (1:1, 1:3, 1:5, 5:1, 1:7) were synthesized hydrothermally to degrade MET and RhB molecules. The CDZ composites were characterized by XRD, BET, EDS, and XPS technique which verifies the crystalline nature, incorporation of C-dots into zeolite frameworks with high surface area (∼187 m2/g). The morphology, d-spacing and lattice planes were analyzed by SEM images, HR-TEM and SAED analysis. The maximum degradation (∼79%) was achieved at an optimum catalyst dose of 0.2 g/L and pH 4 for MET and that of RhB was ∼90% at a catalyst dose of 0.4 g/L. The PZC (point of zero charge) value for CDZ composite was about pH 3.4, which justifies the maximum removal of MET at pH 4. The obtained rate constants 'k' were found to be 0.0081, 0.0041, and 0.0101 min-1 in sun, UV, and visible light sources, respectively. The real industrial wastewater sample has been treated to give ∼68% of COD and ∼62% TOC removal. Moreover, the intermediates of plausible degradation pathways were identified by the m/z values obtained from GC-MS analysis.
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Affiliation(s)
- Aanchal Rathi
- School of Chemistry and Biochemistry, Thapar Institute of Engineering and Technology, India
| | - Soumen Basu
- School of Chemistry and Biochemistry, Thapar Institute of Engineering and Technology, India.
| | - Sanghamitra Barman
- Department of Chemical Engineering, Thapar Institute of Engineering and Technology, India.
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15
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Luo W, Deng L, Hu J, Xu B, Tan C. Efficient degradation of dimetridazole during the UV/chlorine process: Kinetics, pathways, and halonitromethanes formation. Sep Purif Technol 2022. [DOI: 10.1016/j.seppur.2022.120792] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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16
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Deng L, Huang T, Wen L, Hu J, Prasad Singh R, Tan C. Impact of bromide ion on the formation and transformation of halonitromethanes from poly(diallyldimethylammonium chloride) during the UV/chlorine treatment. Sep Purif Technol 2022. [DOI: 10.1016/j.seppur.2022.120520] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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17
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Li JY, Hu R, Shan L, Liu ZQ, Yang SQ, Yang J, Sun F, Cui YH. Effect of operating conditions and water matrix on the performance of UV combined electrochemical process for treating Chloride-containing solution and its reaction mechanism. Sep Purif Technol 2022. [DOI: 10.1016/j.seppur.2022.120465] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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18
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Deng L, Luo W, Huang T, Wen L, Singh RP, Zuo Y, Tan C. Formation and transformation of halonitromethanes from dimethylamine in the presence of bromide during the UV/chlorine disinfection. CHEMOSPHERE 2022; 291:132731. [PMID: 34743802 DOI: 10.1016/j.chemosphere.2021.132731] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/15/2021] [Revised: 10/25/2021] [Accepted: 10/27/2021] [Indexed: 06/13/2023]
Abstract
Halonitromethanes (HNMs) is a typical class of nitrogenous disinfection byproducts with high toxicity. The effect of Br- on the formation and transformation of HNMs from dimethylamine (DMA) during the ultraviolet (UV)/chlorine disinfection has been investigated in current study. Results reveal that only chloronitromethane, dichloronitromethane and trichloronitromethane (TCNM) could be found during the UV/chlorine disinfection. Whereas in the presence of Br-, nine species of HNMs could be observed simultaneously. When Br- concentration increased from 0 to 15.0 mg L-1, the predominant species of HNMs were gradually changed from TCNM to dibromonitromethane and tribromonitromethane, which contributed to 23.37% and 31.07% of total HNMs concentration at 15 mg L-1 Br-, respectively. The presence of Br- not only shifted the chlorinated-HNMs (Cl-HNMs) towards brominated-HNMs (Br-HNMs) but also affected the dominant species and total concentration of HNMs. When Br- concentration was 4.0 mg L-1, the formation of HNMs decreased with the increase of pH from 6.0 to 8.0 and increased with the increase of free chlorine and DMA. When free chlorine concentration rose from 0.25 to 1.1 mmol L-1, Br-HNMs were shifted to Br(Cl)-HNMs and then to Cl-HNMs. According to the findings, possible formation and transformation pathways of HNMs from DMA were proposed in the presence of Br- during the UV/chlorine disinfection. Finally, it was proved that the effect of Br- on the trend of HNMs in real water was similar to that in deionized water, but higher HNMs concentrations and delayed peak time were observed in real water. This study can provide the scientific evidence and fundamental data for the applications of UV/chlorine disinfection in the treatment of water containing Br-.
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Affiliation(s)
- Lin Deng
- Department of Municipal Engineering, Southeast University, Nanjing, 211189, China.
| | - Wei Luo
- Department of Municipal Engineering, Southeast University, Nanjing, 211189, China
| | - Tingting Huang
- Department of Municipal Engineering, Southeast University, Nanjing, 211189, China
| | - Longjia Wen
- Department of Municipal Engineering, Southeast University, Nanjing, 211189, China
| | | | - Yuegang Zuo
- Department of Chemistry and Biochemistry, University of Massachusetts Dartmouth North Dartmouth, MA, 02747, USA
| | - Chaoqun Tan
- Department of Municipal Engineering, Southeast University, Nanjing, 211189, China
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19
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Vasseghian Y, Dragoi EN, Almomani F, Le VT. Graphene-based materials for metronidazole degradation: A comprehensive review. CHEMOSPHERE 2022; 286:131727. [PMID: 34352554 DOI: 10.1016/j.chemosphere.2021.131727] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/03/2021] [Revised: 07/21/2021] [Accepted: 07/28/2021] [Indexed: 06/13/2023]
Abstract
Due to its cytotoxic effect, metronidazole (MNZ) is a drug commonly used to treat bacterial, protozoal, and microaerophilic bacterial infections. After consumption, it undergoes a series of metamorphic reactions that lead to the degradation of oxidized, acetylated, and hydrolyzed metabolites in the environment. To eliminate such pollutants, due to their high potential, adsorption and photocatalysis extensive processes are used in which graphene can be used to improve efficiency. This review analyses the use of graphene as an absorbent and catalyst with a focus on absorption and photocatalytic degradation of MNZ by graphene-based materials (GBMs). The parameters affecting the adsorption, and photocatalytic degradation of MNZ are investigated and discussed. Besides, the basic mechanisms occurring in these processes are summarized and analyzed. This work provides a theoretical framework that can direct future research in the field of MNZ removal from aqueous solutions.
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Affiliation(s)
- Yasser Vasseghian
- Department of Chemical Engineering, Quchan University of Technology, Quchan, Iran.
| | - Elena-Niculina Dragoi
- Faculty of Chemical Engineering and Environmental Protection "Cristofor Simionescu", "Gheorghe Asachi" Technical University, Iasi, Bld Mangeron No 73, 700050, Romania.
| | - Fares Almomani
- Department of Chemical Engineering, College of Engineering, Qatar University, P. O. Box 2713, Doha, Qatar.
| | - Van Thuan Le
- Center for Advanced Chemistry, Institute of Research and Development, Duy Tan University, 03 Quang Trung, Da Nang 550000, Viet Nam; The Faculty of Environmental and Chemical Engineering, Duy Tan University, 03 Quang Trung, Da Nang 550000, Viet Nam.
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20
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Ghanbari F, Yaghoot-Nezhad A, Wacławek S, Lin KYA, Rodríguez-Chueca J, Mehdipour F. Comparative investigation of acetaminophen degradation in aqueous solution by UV/Chlorine and UV/H 2O 2 processes: Kinetics and toxicity assessment, process feasibility and products identification. CHEMOSPHERE 2021; 285:131455. [PMID: 34273698 DOI: 10.1016/j.chemosphere.2021.131455] [Citation(s) in RCA: 22] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/24/2021] [Revised: 06/30/2021] [Accepted: 07/05/2021] [Indexed: 06/13/2023]
Abstract
The degradation of acetaminophen (ACM) was comparatively studied by UV/chlorine and UV/H2O2 systems. An apparent reduction in the removal rate was observed above the optimum pH levels of 7.0 and 3.0 in UV/chlorine and UV/H2O2 processes, respectively. The relative contribution of each oxidizing agent in ACM removal using the two advanced oxidation processes (AOPs) was evaluated. Even though hydroxyl radicals, with the contribution percentage of 90.1%, were determined as the primary oxidizing species in ACM removal using the UV/H2O2 process, reactive chlorine species (RCS), with 43.8% of contribution percentage, were also found to play a pivotal role in ACM removal using the UV/chlorine process. For instance, dichlorine radical (Cl2•-) showed an acceptable contribution percentage of 32.2% in the degradation of ACM by the UV/chlorine process. The rate of ACM degradation significantly rose to 99.9% and 75.6%, as higher amounts of oxidants were used in the UV/chlorine and UV/H2O2 processes, respectively, within 25 min. The introduction of HCO3- ions and humic acid remarkably decreased the rate of ACM degradation in both techniques used in this study. The presence of NO3- and Cl- ions did not considerably affect the removal rate in the UV/chlorine process. The acute toxicity analysis revealed that a more pronounced reduction in the ACM solution toxicity could be achieved by the UV/H2O2 process compared to the UV/chlorine process, which should be ascribed to the formation of chlorinated products in the UV/chlorine treatment. Eventually, plausible oxidation pathways were proposed for each process.
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Affiliation(s)
- Farshid Ghanbari
- Department of Environmental Health Engineering, Abadan University of Medical Sciences, Abadan, Iran.
| | - Ali Yaghoot-Nezhad
- Department of Chemical Engineering, Abadan Faculty of Petroleum Engineering, Petroleum University of Technology, Abadan, 63187-14331, Iran
| | - Stanisław Wacławek
- Institute for Nanomaterials, Advanced Technologies and Innovation, Technical University of Liberec, Studentská 1402/2, 461 17, Liberec 1, Czech Republic.
| | - Kun-Yi Andrew Lin
- Department of Environmental Engineering & Innovation and Development Center of Sustainable Agriculture & Research Center of Sustainable Energy and Nanotechnology, National Chung Hsing University, 250 Kuo-Kuang Road, Taichung, Taiwan.
| | - Jorge Rodríguez-Chueca
- Universidad Politécnica de Madrid (UPM), E.T.S. de Ingenieros Industriales, Departamento de Ingeniería Química Industrial y del Medio Ambiente, c/ de José Gutiérrez Abascal 2, Madrid, 28006, Spain
| | - Fayyaz Mehdipour
- Department of Environmental Health Engineering, School of Public Health and Safety, Shahid Beheshti University of Medical Sciences, Tehran, Iran
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21
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Kim HJ, Won CH, Hong YP, Lee IH, Kim HW. Energy-effective elimination of harmful microcystins by a non-thermal plasma process. CHEMOSPHERE 2021; 284:131338. [PMID: 34217929 DOI: 10.1016/j.chemosphere.2021.131338] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/05/2021] [Revised: 06/22/2021] [Accepted: 06/24/2021] [Indexed: 06/13/2023]
Abstract
Some cyanobacteria produce toxins that threaten the aquatic ecosystem and human health. To prevent serious consequences, this study suggests a potential means of reducing microalgal toxins, microcystins (MCs) by applying non-thermal plasma (NTP) process. Quantified MC-RR, -LR, and -YR were drastically degraded and removed as much as 99.9% by reactive species generated by NTP. Results further demonstrate that NTP uses less energy based on estimated energy per order (EEO kWh m-3 order-1) than other advanced oxidation processes and requires relatively less time to remove the MCs. As a result, NTP may be a viable management option for effective MC control during severe surface water blooms.
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Affiliation(s)
- Hee-Jun Kim
- Department of Environmental Engineering, Division of Civil, Environmental, Mineral Resource and Energy Engineering, Soil Environment Research Center, Jeonbuk National University, 567 Baekje-daero, Deokjin-gu, Jeonju, 54896, South Korea
| | - Chan-Hee Won
- Department of Environmental Engineering, Division of Civil, Environmental, Mineral Resource and Energy Engineering, Soil Environment Research Center, Jeonbuk National University, 567 Baekje-daero, Deokjin-gu, Jeonju, 54896, South Korea
| | - Yeong-Pyo Hong
- Groon., Ltd., 109, Wonmanseong-ro, Deokjin-gu, Jeonju-si, Jeollabuk-do, South Korea
| | - In Ho Lee
- Groon., Ltd., 109, Wonmanseong-ro, Deokjin-gu, Jeonju-si, Jeollabuk-do, South Korea
| | - Hyun-Woo Kim
- Department of Environmental Engineering, Division of Civil, Environmental, Mineral Resource and Energy Engineering, Soil Environment Research Center, Jeonbuk National University, 567 Baekje-daero, Deokjin-gu, Jeonju, 54896, South Korea.
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22
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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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23
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Wang Z, Li H, Ma W, Wang Y, Cui P, Qi J, Chen Z, Zhu Z, Meng F. Highly efficient electro-catalysis activationof peroxymonosulfate by “used” As/Cr/Mo@FeOOH material for the degradation of metronidazole: Degradation mechanism and toxicity assessment. J Taiwan Inst Chem Eng 2021. [DOI: 10.1016/j.jtice.2021.03.050] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
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24
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Yang T, Mai J, Wu S, Liu C, Tang L, Mo Z, Zhang M, Guo L, Liu M, Ma J. UV/chlorine process for degradation of benzothiazole and benzotriazole in water: Efficiency, mechanism and toxicity evaluation. THE SCIENCE OF THE TOTAL ENVIRONMENT 2021; 760:144304. [PMID: 33341627 DOI: 10.1016/j.scitotenv.2020.144304] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/01/2020] [Revised: 10/30/2020] [Accepted: 11/27/2020] [Indexed: 06/12/2023]
Abstract
Benzothiazole (BZA) and benzotriazole (BTZ) as emerging contaminants were found persistent in aquatic environments and toxic to aquatic organisms. The degradation of BZA and BTZ by UV/chlorine was systematically investigated in this study, and the results showed that BZA and BTZ can be remarkably removed by UV/chlorine compared with UV alone and dark chlorination. The radical quenching tests showed that degradation of BZA and BTZ by UV/chlorine involved the participation of reactive chlorine species (RCS), hydroxyl radical (HO·), and UV photolysis. HO· dominated BZA degradation at neutral and alkalinity, while RCS dominated BTZ degradation. The second-rate order constants for ClO· and BZA and BTZ were 2.22 × 108 M-1 s-1, and 2.40 × 108 M-1 s-1, respectively. Besides, the second-order rate constants for HO· and BZA and BTZ were also determined at pH 5.0, 7.0, and 9.0, respectively. The degradation efficiency of BZA by UV/chlorine was substantially promoted at acidic conditions, while the degradation efficiency of BTZ was promoted at both acidic and specific alkaline range mainly due to the reactivity of radical species and deprotonated form. The influence of Cl- was negligible, but the suppression effect of humic acid was slight during the BZA and BZT degradation by UV/chlorine. The transformation products were detected and the possible pathways were proposed. Seven disinfection by-products (DBPs) were identified both in BZA and BTZ degradation and trichloromethane was the main DBP. The toxicity assessment performed by luminescent bacteria and ECOSAR analysis indicated that the detoxification of BZA could be achieved by UV/chlorine, whereas the toxicity of BTZ was increased mainly due to the formation of intermediates. The findings from this study demonstrated UV/chlorine is likewise efficient for BZA and BTZ removal but the toxicity should be considered in the BTZ degradation.
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Affiliation(s)
- Tao Yang
- School of Biotechnology and Health Science, Wuyi University, Jiangmen 529020, Guangdong Province, China
| | - Jiamin Mai
- School of Biotechnology and Health Science, Wuyi University, Jiangmen 529020, Guangdong Province, China
| | - Sisi Wu
- School of Biotechnology and Health Science, Wuyi University, Jiangmen 529020, Guangdong Province, China
| | - Chunping Liu
- Department of Cardiovascular Medicine, Guangdong Hospital of Traditional Chinese Medicine, Guangzhou, China
| | - Liuyan Tang
- School of Biotechnology and Health Science, Wuyi University, Jiangmen 529020, Guangdong Province, China
| | - Zongwen Mo
- School of Biotechnology and Health Science, Wuyi University, Jiangmen 529020, Guangdong Province, China
| | - Mengchen Zhang
- School of Biotechnology and Health Science, Wuyi University, Jiangmen 529020, Guangdong Province, China
| | - Lin Guo
- School of Biotechnology and Health Science, Wuyi University, Jiangmen 529020, Guangdong Province, China
| | - Minchao Liu
- School of Biotechnology and Health Science, Wuyi University, Jiangmen 529020, Guangdong Province, China.
| | - Jun Ma
- State Key Laboratory of Urban Water Resource and Environment, School of Environmental, Harbin Institute of Technology, Harbin 150090, China.
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25
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Noroozi R, Gholami M, Farzadkia M, Jonidi Jafari A. Catalytic potential of CuFe 2O 4/GO for activation of peroxymonosulfate in metronidazole degradation: study of mechanisms. JOURNAL OF ENVIRONMENTAL HEALTH SCIENCE & ENGINEERING 2020; 18:947-960. [PMID: 33312615 PMCID: PMC7721943 DOI: 10.1007/s40201-020-00518-4] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/27/2020] [Accepted: 08/03/2020] [Indexed: 05/11/2023]
Abstract
Application of magnetite nanoparticles (CuFe2O4/GO) were anchored on graphene oxide (GO), as a Heterogeneous nanocomposite for activating of peroxymonosulfate (PMS) into Metronidazole (MNZ) destruction. The effect of solution pH, reaction time, effectiveness of water matrix components and trapping factors, different catalyst concentrations, PMS and contaminants were evaluated as operating factors on the efficiency of MNZ degradation. Also, mineralization, stability, reactivity and Recycling tests of the catalyst, and the degradation kinetics were performed. MNZ degradation and mineralization were obtained under optimal conditions (0.2 g/L catalyst, pH = 5, 30 mg/L MNZ and 2 mM PMS), 100% and 41.02%, respectively over 120 min. Leaching of Fe and Cu was found <0.2 mg/L for CuFe2O4/GO showed a high stability of catalyst, and a significant recyclability was achieved CuFe2O4/GO within 5 times consecutive use. MNZ degradation affected by anions was reduced as follows: HCO3 - > NO3 - > Cl- > SO4 2-. The experimental data were very good agreement with pseudo-first-order kinetic model, and during quenching tests SO4 •- radicals played a dominant role in the degradation process of MNZ. As a result, the CuFe2O4/GO/PMS system can be described as a promising activation of PMS in MNZ degradation, due to its high stability, reusability and good catalyst reactivity, and the production of reactive species simultaneously.
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Affiliation(s)
- Roghayeh Noroozi
- Department of Environmental Health Engineering, Iran University of Medical Sciences, Tehran, Iran
| | - Mitra Gholami
- Department of Environmental Health Engineering, Iran University of Medical Sciences, Tehran, Iran
- Research Center for Environmental Health Technology, Iran University of Medical Sciences, Tehran, Iran
| | - Mahdi Farzadkia
- Department of Environmental Health Engineering, Iran University of Medical Sciences, Tehran, Iran
- Research Center for Environmental Health Technology, Iran University of Medical Sciences, Tehran, Iran
| | - Ahmad Jonidi Jafari
- Department of Environmental Health Engineering, Iran University of Medical Sciences, Tehran, Iran
- Research Center for Environmental Health Technology, Iran University of Medical Sciences, Tehran, Iran
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26
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Cheng S, Wu J, Zuo YT, Han YZ, Ji WX, Li Y, Huo ZL, Li AM, Li WT. Developing a restricted chlorine-dosing strategy for UV/chlorine and post-chlorination under different pH and UV irradiation wavelength conditions. CHEMOSPHERE 2020; 258:127393. [PMID: 32947669 DOI: 10.1016/j.chemosphere.2020.127393] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/18/2020] [Revised: 06/08/2020] [Accepted: 06/10/2020] [Indexed: 06/11/2023]
Abstract
UV/chlorine and chlorination processes have drawn great interests of water treatment utilities for oxidation and disinfection purposes. This work proposed a restricted chlorine-dosing strategy for UV/chlorine and post-chlorination under different pH and UV irradiation conditions by comprehensively assessing the oxidation of natural organic matter (NOM), formation of 9 haloacetic acids (HAA9) and bromate, and alteration of toxicity. During UV/chlorine with restricted chlorine doses, the oxidation of NOM chromophores (i.e., ΔUVA254) showed an apparent dependence on cumulative exposures of free available chlorine (CTFAC); Meanwhile, HAA9 formation was determined by CTFAC values and could be linearly correlated with ΔUVA254 irrespective of pH and UV irradiation wavelength. Irradiated by 254 nm LP-Hg lamp, the faster chlorine photolysis produced relatively higher steady-state concentrations of Cl• and HO• species but resulted in lower CTFAC. Reducing CTFAC values by operation parameters (pH, UV wavelength and irradiation fluence) could mitigate HAA9 formation during UV/chlorine at a specific chlorine dose. Additionally, high bromide concentration and acidic pH promoted more bromo-HAAs formation, and the presence of NOM significantly suppressed bromate formation. Analogous to ozonation, the UV/chlorine pre-oxidation could reduce the HAA9 formation potentials during post-chlorination at mildly alkaline pH. The photobacterium bioassay further demonstrated that although the UV/chlorine treatment might have increased the acute toxicity, the post-chlorination treatment could polish the acute toxicity to the level of chlorination alone. These results suggest that with the restricted chlorine-dosing strategy, the trade-off between oxidation/disinfection efficiency and DBPs formation can be controlled by monitoring CTFAC and ΔUVA254 values during UV/chlorine treatment.
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Affiliation(s)
- Shi Cheng
- State Key Laboratory of Pollution Control and Resources Reuse, School of the Environment, Nanjing University, Nanjing, 210023, China
| | - Ji Wu
- State Key Laboratory of Pollution Control and Resources Reuse, School of the Environment, Nanjing University, Nanjing, 210023, China
| | - Yan-Ting Zuo
- State Key Laboratory of Pollution Control and Resources Reuse, School of the Environment, Nanjing University, Nanjing, 210023, China
| | - Yu-Ze Han
- State Key Laboratory of Pollution Control and Resources Reuse, School of the Environment, Nanjing University, Nanjing, 210023, China
| | - Wen-Xiang Ji
- State Key Laboratory of Pollution Control and Resources Reuse, School of the Environment, Nanjing University, Nanjing, 210023, China
| | - Yan Li
- State Key Laboratory of Pollution Control and Resources Reuse, School of the Environment, Nanjing University, Nanjing, 210023, China
| | - Zong-Li Huo
- Jiangsu Province Center for Disease Control and Prevention, Nanjing, 210023, China
| | - Ai-Min Li
- State Key Laboratory of Pollution Control and Resources Reuse, School of the Environment, Nanjing University, Nanjing, 210023, China
| | - Wen-Tao Li
- State Key Laboratory of Pollution Control and Resources Reuse, School of the Environment, Nanjing University, Nanjing, 210023, China.
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27
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Tan C, Wu H, He H, Lu X, Gao H, Deng J, Chu W. Anti-inflammatory drugs degradation during LED-UV 365 photolysis of free chlorine: roles of reactive oxidative species and formation of disinfection by-products. WATER RESEARCH 2020; 185:116252. [PMID: 32763529 DOI: 10.1016/j.watres.2020.116252] [Citation(s) in RCA: 25] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/02/2020] [Revised: 07/26/2020] [Accepted: 07/28/2020] [Indexed: 06/11/2023]
Abstract
Light-emitting diode (LED) is environmentally friendly with longer life compared with traditionally mercury lamps. This study investigated the non-steroidal anti-inflammatory drugs (NSAIDs)- phenacetin (PNT) and acetaminophen (ACT)- removal during LED-UV (365 nm) photolysis of free available chlorine (FAC). Degradation of PNT and ACT during LED-UV365/FAC treatment at pH 5.5-8.5 followed the pseudo-first order kinetics. The presence of hydroxyl radicals (·OH), reactive chlorine species (RCS), and ozone (O3, transformed from O (3P)) were screened by using scavengers of ethanol (EtOH), tert-Butanol (TBA), and 3-buten-2ol, and 4-hydroxy-2,2,6,6-tetramethylpiperidine (TEMP), and quantified by competition kinetics with probing compounds of nitrobenzene (NB), benzoate acid (BA), 1,4-dimethoxybenzene (DMOB). Higher pH would lead to decrease of ·OH contribution and an increase of FAC contribution to PNT and ACT degradation. It has been determined that the contribution of O3 to degradation of PNT and ACT was less than 5% for all pHs, and O3(P) reacts toward EtOH with second-order constant of 1.52 × 109 M-1s-1. LED-UV365/FAC system reduced the formation of five typical CX3-R type disinfection by-products (DBPs) as well as the cytotoxicity and genotoxicity of water samples at pH 5.5 and 8.5, compared with FAC alone. The decrease of DBPs formation resulted from fast FAC decomposition upon LED-UV365 irradiation. A feasible reaction pathway of DBPs formation in the LED-UV365/FAC system was examined with density functional theory (DFT). For FAC decay during LED-UV365/FAC with effluent from wastewater, the residual FAC in 15 min was 0.8 mg/L (lower than limit of 0.2 mg/L) once initial FAC was 2.0 mg/L. The results indicate that more tests on the balance of target pollutant removal efficiency, residual FAC and cost should be explored in LED-UV365/FAC system for application.
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Affiliation(s)
- Chaoqun Tan
- School of Civil Engineering, Southeast University, Nanjing 210096, China; Key Laboratory of Concrete and Prestressed Concrete Structures of the Ministry of Education, Southeast University, Nanjing 210096, China.
| | - Haotian Wu
- School of Civil Engineering, Southeast University, Nanjing 210096, China
| | - Huan He
- Depart of Civil and Environmental Engineering, University of Washington, Seattle, Washington 98195-2007, United States
| | - Xu Lu
- School of Civil Engineering, Southeast University, Nanjing 210096, China
| | - Haiying Gao
- School of Civil Engineering, Southeast University, Nanjing 210096, China; Key Laboratory of Concrete and Prestressed Concrete Structures of the Ministry of Education, Southeast University, Nanjing 210096, China
| | - Jing Deng
- College of Civil Engineering and Architecture, Zhejiang University of Technology, Hangzhou 310014, China
| | - Wenhai Chu
- Key laboratory of Yangze River Water Environment, Tongji University, Shanghai 200092, China
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Fathinia M, Khataee A, Vahid B, Joo SW. Scrutinizing the vital role of various ultraviolet irradiations on the comparative photocatalytic ozonation of albendazole and metronidazole: Integration and synergistic reactions mechanism. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2020; 272:111044. [PMID: 32669252 DOI: 10.1016/j.jenvman.2020.111044] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/14/2020] [Revised: 06/30/2020] [Accepted: 07/01/2020] [Indexed: 06/11/2023]
Abstract
Herein, TiO2 nanoparticles were immobilized on the ceramic surface using the sol-gel dip-coating method, which confirmed by scanning electron microscopy (SEM) and atomic force microscopy (AFM). Then, a semi-batch reactor containing the prepared ceramic plates, which irradiated by the various UV lights was used for the degradation of the albendazole (ALZ) and metronidazole (MTZ) pharmaceuticals by the photocatalytic ozonation process. The control experiments were performed to compare the photocatalysis, ozonation, photo-ozonation and photocatalytic ozonation processes under the same operational conditions with the UV-A, UV-B and UV-C irradiations. The synergistic effect of photocatalysis and ozonation was observed; moreover, the results revealed that the UV-A/TiO2/O3 had the highest efficiency for the ALZ and MTZ degradation owing to the synergistic heterogeneous reactions (SHRs), which led to more reactive oxygen species (ROS). The MTZ and ALZ degradation were probed by monitoring the dissolved ozone, oxygen and hydrogen peroxide concentrations during the various processes including the UV-A/TiO2/O3 process. The obtained results disclose that the ALZ degradation is lower than the MTZ due to its resistant nature with more direct attacks of the ozone in the bulk solution compared to the MTZ. Furthermore, the various compounds as the holes (h+) and ROS scavengers or ozone solubility enhancers were added to the reaction bulk to investigate the exact mechanism of the photocatalytic-ozonation. Eventually, the degradation intermediates of the pharmaceuticals generated in the photocatalytic-ozonation process were successfully recognized by the Gas chromatography-mass spectrometry (GC-MS) and the possible degradation paths were suggested for the degradation of pollutants considering the responsible ROS in each case.
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Affiliation(s)
| | - Alireza Khataee
- School of Mechanical Engineering, Yeungnam University, Gyeongsan, 712-749, South Korea; Research Laboratory of Advanced Water and Wastewater Treatment Processes, Department of Applied Chemistry, Faculty of Chemistry, University of Tabriz, 51666-16471, Tabriz, Iran.
| | - Behrouz Vahid
- Department of Chemical Engineering, Tabriz Branch, Islamic Azad University, Tabriz, Iran
| | - Sang Woo Joo
- School of Mechanical Engineering, Yeungnam University, Gyeongsan, 712-749, South Korea.
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29
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Comparison of Ag and AgI-Modified ZnO as Heterogeneous Photocatalysts for Simulated Sunlight Driven Photodegradation of Metronidazole. Catalysts 2020. [DOI: 10.3390/catal10091097] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023] Open
Abstract
Ag and AgI-modified ZnO composites (Ag/ZnO and AgI/ZnO) were synthesized in facile ways. The photocatalysts were used for the photodegradation of metronidazole (MNZ) under the irradiation of simulated sunlight. The results of experiments showed that both Ag/ZnO and AgI/ZnO had a specific molar ratio to reach the best performance. Ag/ZnO performed better in the photodegradation of MNZ than AgI/ZnO under the same conditions. The reaction rate constant of AgI/ZnO was less affected by the variation of initial concentration of MNZ or pH values. The main reactive oxygen species of the photocatalytic process are OH, O2− and h+, but the free radicals which play the most critical part differ in Ag/ZnO and AgI/ZnO. Several intermediates were revealed by LC–MS/MS analysis. The stability of the photocatalysts was evaluated by a series of repeated MNZ photodegradation experiments. The results showed that AgI/ZnO had better stability than Ag/ZnO.
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30
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Moteshaker PM, Rokni SE, Farnoodian N, Mohassel Akhlaghi N, Saadi S, Ahmadidoust G, Yousefi A. Application of response surface methodology for optimization of electrochemical process in metronidazole (MNZ) removal from aqueous solutions using stainless steel 316 (SS316) and lead (Pb) anodes. INTERNATIONAL JOURNAL OF CHEMICAL REACTOR ENGINEERING 2020. [DOI: 10.1515/ijcre-2020-0055] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
AbstractPharmaceutical compounds in drinking water sources, in addition to threatening environmental health, increase bacterial resistance in aquatic environments. The purpose of this study was to investigate the application of response surface methodology for the optimization of the electrochemical process in the removal of metronidazole (MNZ) aqueous solutions using stainless steel 316 (SS316) and Lead (Pb) anodes. In this experimental study, the effect of different parameters including pH (4–10), electrolysis time (40–120 min), MNZ antibiotic concentration (30–150 mg/L), and current density (2–10 mA/cm2) on Antibiotic removal efficiency was evaluated by a central composite design method using Design-Expert software. Data were analyzed using ANOVA and p-Value tests. Hence, central composite design (CCD) established a reduced quadratic polynomial model with P-value < 0.0001 and R2 = 0.98. The optimal values for the solution pH initial, electrolysis time, current density, and MNZ antibiotic concentration were 5.5, 100.0 min, 8.0 mA/cm2, and 50 mg/L, respectively. By employing the optimum conditions obtained, the maximum experimental removal efficiencies by SS316 and Pb anodes were 67.85 and 78.66%, respectively. The Chemical Oxygen Demand/total organic carbon (COD/TOC) ratio was decreased from 1.67 at the inlet to 1.53 at the outlet for SS316 and from 1.7 to 1.42 for Pb. Moreover, average oxidation state (AOS) was increased from 1.45 to 1.7 for SS316 and from 1.45 to 1.86 for Pb, which indicates the biodegradability of MNZ antibiotics by the electrochemical process. The electrochemical degradation process was identified as an effective method for the removal of MNZ from aquatic solutions, and it has an outstanding potential in removing other refractory pollutants from the environment.
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Affiliation(s)
| | - Seyed Ehsan Rokni
- Department of Natural Resources and Environment, Science and Research Branch, Islamic Azad University, Tehran, Iran
| | - Narges Farnoodian
- Department of Environment and Energy, Science and Research Branch, Islamic Azad University, Tehran, Iran
| | | | - Sommayeh Saadi
- Department of Environmental Health Engineering, School of Public Health, Tehran University of Medical Sciences, Tehran, Iran
| | - Ghobad Ahmadidoust
- Department of Environmental Health Engineering, School of Public Health, Hamadan University of Medical Sciences, Hamadan, Iran
| | - Arman Yousefi
- Department of Microbiology, Faculty of Basic Sciences, Islamic Azad University Bonab, Bonab, Iran
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31
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Liu D, Song K, Xie G, Li L. MBR-UV/Cl 2 system in treating polluted surface water with typical PPCP contamination. Sci Rep 2020; 10:8835. [PMID: 32483265 PMCID: PMC7264135 DOI: 10.1038/s41598-020-65845-w] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2020] [Accepted: 05/11/2020] [Indexed: 12/02/2022] Open
Abstract
This study proposed the membrane bioreactor–ultraviolet/chlorine (MBR-UV/Cl2) process for treating polluted surface water with pharmaceutical personal care product (PPCP) contamination. Results showed that MBR-UV/Cl2 effectively removed the organic matters and ammonia at approximately 80% and 95%. MBR-UV/Cl2 was used in the removal of sulfadiazine(SDZ), sulfamethoxazole(SMZ), tetracycline(TC), oxytetracycline(OTC), ciprofloxacin(CIP), ofloxacin(OFX), erythromycin(ERY), roxithromycin(ROX), ibuprofen(IBU) and, naproxen(NAX) at 12.18%, 95.61%, 50.50%, 52.97%, 33.56%, 47.71%, 87.57%, 93.38%, 93.80%, and 71.46% in which their UV/Cl2 contribution was 12.18%, 95.61%, 29.04%, 38.14%, 25.94%, 7.20%, 80.28%, 33.79%, 73.08%, and 23.05%, respectively. The removal of 10 typical PPCPs using UV/Cl2 obtained higher contributions than those of the MBR process, except OTC, ROX, and IBU. The UV/Cl2 process with 3-min hydraulic retention time and chlorine concentration at 3 mg/L effectively removed the trace of PPCPs. MBR-UV/Cl2 has the potential to be developed as an effective technology in treating polluted surface water with PPCP contamination.
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Affiliation(s)
- Dan Liu
- School of the Environment and Safety Engineering, Jiangsu University, Zhenjiang, 212013, China.,State Key Laboratory of Freshwater Ecology and Biotechnology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan, 430072, China
| | - Kang Song
- State Key Laboratory of Freshwater Ecology and Biotechnology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan, 430072, China
| | - Guojun Xie
- State Key Laboratory of Urban Water Resource and Environment, Harbin Institute of Technology, Harbin, 150090, China
| | - Lu Li
- State Key Laboratory of Freshwater Ecology and Biotechnology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan, 430072, China.
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32
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Si F, Zhang Y, Yao C, Du M, Hussain I, Huang S, Wen W, Hu X. Degradation of ronidazole by electrochemically simultaneously generated persulfate and ferrous ions. CHEMOSPHERE 2020; 238:124579. [PMID: 31434045 DOI: 10.1016/j.chemosphere.2019.124579] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/25/2019] [Revised: 08/10/2019] [Accepted: 08/12/2019] [Indexed: 06/10/2023]
Abstract
Nitroimidazoles are found in pharmaceuticals and personal care products (PPCPs) and, when discharged into the environment, have adverse effects on human health and survival. Advanced oxidation technologies (AOTs) based on persulfate (PS) can rapidly and efficiently degrade organic pollutants via strong oxidizing radicals under activation conditions. This study investigated the degradation of ronidazole (RNZ) by indirect electrolytic generation of PS and its activator, ferrous ion (Fe2+). An electrochemical system was developed, with a high concentration of PS generated at the anode while the activator Fe2+ was produced at the cathode. It showed that ammonium polyphosphate (APP) could effectively promote the electrolysis of PS. A high current efficiency (88%) at the anode could be obtained after 180 min at a high current density (300 mA cm-2). However, Fe2+ was inhibited at the cathode due to material control. The degradation of RNZ in the Fe2+/PS system generated from the electrochemical system was also explored. Increasing PS concentration and Fe2+/PS ratio were beneficial to the RNZ degradation. In homogeneous reactions, the degradation efficiency of RNZ could be improved by decreasing the Fe2+ addition rate through a peristaltic pump. Five intermediates were also detected and the degradation pathways were proposed. These findings provide a new method and mechanism for rapid and efficient degradation of RNZ.
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Affiliation(s)
- Fan Si
- School of Environment and Energy, Guangdong Provincial Key Laboratory of Atmospheric Environment and Pollution Control, South China University of Technology, Guangzhou, 510006, China
| | - Yongqing Zhang
- School of Environment and Energy, Guangdong Provincial Key Laboratory of Atmospheric Environment and Pollution Control, South China University of Technology, Guangzhou, 510006, China; The Key Lab of Pollution Control and Ecosystem Restoration in Industry Clusters, Ministry of Education, Guangzhou, 510006, China; State Key Laboratory of Pulp and Paper Engineering, South China University of Technology, Guangzhou, 510640, China.
| | - Chenhui Yao
- School of Environment and Energy, Guangdong Provincial Key Laboratory of Atmospheric Environment and Pollution Control, South China University of Technology, Guangzhou, 510006, China
| | - Meimei Du
- School of Environment and Energy, Guangdong Provincial Key Laboratory of Atmospheric Environment and Pollution Control, South China University of Technology, Guangzhou, 510006, China
| | - Imtyaz Hussain
- School of Environment and Energy, Guangdong Provincial Key Laboratory of Atmospheric Environment and Pollution Control, South China University of Technology, Guangzhou, 510006, China
| | - Shaobin Huang
- School of Environment and Energy, Guangdong Provincial Key Laboratory of Atmospheric Environment and Pollution Control, South China University of Technology, Guangzhou, 510006, China
| | - William Wen
- Centre for Clean Environment and Energy, Environmental Futures Research Institute, Griffith School of Environment, Griffith University, Gold Coast Campus, QLD, 4222, Australia
| | - Xijun Hu
- Department of Chemical and Biological Engineering, Hong Kong University of Science and Technology, Clear Water Bay, Kowloon, Hong Kong
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33
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Oxidation of β-blocker atenolol by a combination of UV light and chlorine: Kinetics, degradation pathways and toxicity assessment. Sep Purif Technol 2020. [DOI: 10.1016/j.seppur.2019.115927] [Citation(s) in RCA: 33] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
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