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Zhang W, Zhou S, Sun J, Meng X, Luo J, Zhou D, Crittenden J. Impact of Chloride Ions on UV/H 2O 2 and UV/Persulfate Advanced Oxidation Processes. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2018; 52:7380-7389. [PMID: 29809002 DOI: 10.1021/acs.est.8b01662] [Citation(s) in RCA: 107] [Impact Index Per Article: 17.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/28/2023]
Abstract
Chloride ion (Cl-) is one of the most common anions in the aqueous environment. A mathematical model was developed to determine and quantify the impact of Cl- on the oxidization rate of organic compounds at the beginning stage of the UV/persulfate (PS) and UV/H2O2 processes. We examined two cases for the UV/PS process: (1) when the target organic compounds react only with sulfate radicals, the ratio of the destruction rate of the target organic compound when Cl- is present to the rate when Cl- is not present (designated as rRCl-/ rR) is no larger than 1.942%; and (2) when the target organic compounds can react with sulfate radicals, hydroxyl radicals and chlorine radicals, rRCl-/ rR, can be no larger than 60%. Hence, Cl- significantly reduces the organic destruction rate in the UV/PS process. In the UV/H2O2 process, we found that Cl- has a negligible effect on the organic-contaminant oxidation rate. Our simulation results agree with the experimental results very well. Accordingly, our mathematical model is a reliable method for determining whether Cl- will adversely impact organic compounds destruction by the UV/PS and UV/H2O2 processes.
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Affiliation(s)
- Weiqiu Zhang
- School of Civil and Environmental Engineering and the Brook Byers Institute for Sustainable Systems , Georgia Institute of Technology , Atlanta , Georgia 30332 , United States
| | - Shiqing Zhou
- Department of Water Engineering and Science, College of Civil Engineering , Hunan University , Changsha , Hunan 410082 , China
| | - Julong Sun
- Department of Water Engineering and Science, College of Civil Engineering , Hunan University , Changsha , Hunan 410082 , China
| | - Xiaoyang Meng
- School of Civil and Environmental Engineering and the Brook Byers Institute for Sustainable Systems , Georgia Institute of Technology , Atlanta , Georgia 30332 , United States
| | - Jinming Luo
- School of Civil and Environmental Engineering and the Brook Byers Institute for Sustainable Systems , Georgia Institute of Technology , Atlanta , Georgia 30332 , United States
| | - Dandan Zhou
- School of Environment , Northeast Normal University , Changchun 130024 , China
| | - John Crittenden
- School of Civil and Environmental Engineering and the Brook Byers Institute for Sustainable Systems , Georgia Institute of Technology , Atlanta , Georgia 30332 , United States
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102
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Zhou Y, Jiang J, Gao Y, Pang SY, Ma J, Duan J, Guo Q, Li J, Yang Y. Oxidation of steroid estrogens by peroxymonosulfate (PMS) and effect of bromide and chloride ions: Kinetics, products, and modeling. WATER RESEARCH 2018; 138:56-66. [PMID: 29573629 DOI: 10.1016/j.watres.2018.03.045] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/23/2017] [Revised: 03/13/2018] [Accepted: 03/16/2018] [Indexed: 06/08/2023]
Abstract
Recently, in situ chemical oxidation (ISCO) using peroxymonosulfate (PMS) for environmental decontamination has received increasing interest. In this study, oxidation kinetics and products of four steroid estrogens (i.e., estrone, 17β-estradiol, estriol, and 17α-ethinylestradiol) by PMS under various conditions were investigated. PMS could fairly degrade steroid estrogens over the pH range of 7-10, and the degradation rate increased with the increase of solution pH. This pH-dependence was well described by parallel reactions between individual acid-base species of steroid estrogens (E and E-) and PMS (HSO5- and SO52-), where specific second-order rate constants for E- with HSO5- and SO52- were in the range of 2.11-5.58 M-1s-1 and 0.77-1.25 M-1s-1, respectively. Identification of oxidation products by liquid chromatography/electrospray ionization quadrupole time-of-flight mass spectrometer showed that PMS readily oxidized the phenolic group of steroid estrogens, leading to the generation of hydroxylated and ring-opening products. The presence of bromide and chloride ions (Br- and Cl-) at environmentally relevant levels could greatly accelerate the degradation of steroid estrogens by PMS with the formation of halogenated aromatic products. This effect was quantitatively estimated by a kinetic model, where the formation of free bromine and chorine and their rapid electrophilic substitution with steroid estrogens were taken into consideration. Eco-toxicity of transformation products of 17α-ethinylestradiol by PMS treatment in the absence and presence of bromide and chloride was estimated by quantitative structure-activity relationship analysis using ECOSAR. These findings advance the understanding of ISCO using PMS.
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Affiliation(s)
- Yang Zhou
- State Key Laboratory of Urban Water Resource and Environment, School of Environment, Harbin Institute of Technology, Harbin 150090, China
| | - Jin Jiang
- State Key Laboratory of Urban Water Resource and Environment, School of Environment, Harbin Institute of Technology, Harbin 150090, China.
| | - Yuan Gao
- State Key Laboratory of Urban Water Resource and Environment, School of Environment, Harbin Institute of Technology, Harbin 150090, China
| | - Su-Yan Pang
- School of Municipal and Environmental Engineering, Jilin Jianzhu University, Changchun 130118, China.
| | - Jun Ma
- State Key Laboratory of Urban Water Resource and Environment, School of Environment, Harbin Institute of Technology, Harbin 150090, China
| | - Jiebin Duan
- College of Chemical and Environmental Engineering, Harbin University of Science and Technology, Harbin 150040, China
| | - Qin Guo
- College of Chemical and Environmental Engineering, Harbin University of Science and Technology, Harbin 150040, China
| | - Juan Li
- State Key Laboratory of Urban Water Resource and Environment, School of Environment, Harbin Institute of Technology, Harbin 150090, China
| | - Yue Yang
- College of Chemical and Environmental Engineering, Harbin University of Science and Technology, Harbin 150040, China
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103
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Miran W, Jang J, Nawaz M, Shahzad A, Lee DS. Biodegradation of the sulfonamide antibiotic sulfamethoxazole by sulfamethoxazole acclimatized cultures in microbial fuel cells. THE SCIENCE OF THE TOTAL ENVIRONMENT 2018; 627:1058-1065. [PMID: 29426125 DOI: 10.1016/j.scitotenv.2018.01.326] [Citation(s) in RCA: 65] [Impact Index Per Article: 10.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/27/2017] [Revised: 01/12/2018] [Accepted: 01/31/2018] [Indexed: 06/08/2023]
Abstract
Microbial fuel cells (MFCs) are known for their ability to enhance the removal rate of toxins while generating power. This research presents a performance assessment of MFCs for power generation and sulfamethoxazole (SMX) degradation using SMX acclimatized cultures. Experiments were performed in MFC batch mode using different SMX concentrations in synthetic wastewater. The experimental results showed that voltage generation was >400mV up to the SMX concentration of 0.20mM (at 400Ω external resistance). Control experiments supported the inference that biodegradation was the main process for SMX removal compared to sorption by SMX acclimatized cultures and that the process results in efficient removal of SMX in MFC mode. The specific removal rates of SMX in MFC with SMX acclimatized sludge were 0.67, 1.37, 3.43, 7.32, and 13.36μm/h at initial SMX concentrations of 0.04, 0.08, 0.20, 0.39, and 0.79mM, respectively. Moreover, the MFC was able to remove >90% of the TOC from the wastewater up to SMX concentrations of 0.08mM. However, this TOC removal produces negative effects at higher SMX concentrations due to toxic intermediates. Microbial community analysis revealed large changes in bacterial communities at the phylum, class, and genus levels after SMX acclimatization and MFC operation. Thauera, a well-known aromatic-degrading bacteria, was the most dominant genus present in post-acclimatized conditions. In summary, this study showed that acclimatized sludge can play an important role in the biodegradation of SMX in MFCs.
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Affiliation(s)
- Waheed Miran
- Department of Environmental Engineering, Kyungpook National University, 80 Daehak-ro, Buk-gu, Daegu 41566, Republic of Korea
| | - Jiseon Jang
- Department of Environmental Engineering, Kyungpook National University, 80 Daehak-ro, Buk-gu, Daegu 41566, Republic of Korea
| | - Mohsin Nawaz
- Department of Environmental Engineering, Kyungpook National University, 80 Daehak-ro, Buk-gu, Daegu 41566, Republic of Korea
| | - Asif Shahzad
- Department of Environmental Engineering, Kyungpook National University, 80 Daehak-ro, Buk-gu, Daegu 41566, Republic of Korea
| | - Dae Sung Lee
- Department of Environmental Engineering, Kyungpook National University, 80 Daehak-ro, Buk-gu, Daegu 41566, Republic of Korea.
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104
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UV-activated persulfate oxidation of the insensitive munitions compound 2,4-dinitroanisole in water: Kinetics, products, and influence of natural photoinducers. J Photochem Photobiol A Chem 2018. [DOI: 10.1016/j.jphotochem.2018.04.044] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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105
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Huang W, Bianco A, Brigante M, Mailhot G. UVA-UVB activation of hydrogen peroxide and persulfate for advanced oxidation processes: Efficiency, mechanism and effect of various water constituents. JOURNAL OF HAZARDOUS MATERIALS 2018; 347:279-287. [PMID: 29329010 DOI: 10.1016/j.jhazmat.2018.01.006] [Citation(s) in RCA: 52] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/12/2017] [Revised: 12/21/2017] [Accepted: 01/03/2018] [Indexed: 06/07/2023]
Abstract
In the present work we investigate the activation efficiency of H2O2 and S2O82- using UVA and UVB radiation. Bisphenol-A (BPA) is used as model pollutants to estimate the oxidative process efficiency in simulated and real sewage treatment plant waters. Particular attention is paid to the BPA removal efficiency and to the radical mechanism involvement considering the effect of typical inorganic water constituents (carbonates and chloride ions) and organic matter. Despite a detrimental effect observed when carbonate ions are in solution using both hydrogen peroxide and persulafate, the presence of high chloride ions concentration was found to improve BPA removal using S2O82- as radical precursor. This enhancement, investigated combining chemical kinetic model approach and laser flash photolysis experiments, is attributed to the formation of hydroxyl radical and chlorine radical species from sulfate radical. Different transformation products are identified by means of GC-MS and HPLC-MS analyses. Moreover, experiments using sewage treatment plant water (STPW) spiked with BPA are performed in order to assess the efficiency of oxidative processes in a simulated treatment systems activated using UVA + UVB radiations.
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Affiliation(s)
- Wenyu Huang
- Université Clermont Auvergne, CNRS, SIGMA Clermont, Institut de Chimie de Clermont-Ferrand, F-63000 Clermont-Ferrand, France; School of the Environment, Guangxi University, Nanning 530004, China.
| | - Angelica Bianco
- Université Clermont Auvergne, CNRS, SIGMA Clermont, Institut de Chimie de Clermont-Ferrand, F-63000 Clermont-Ferrand, France
| | - Marcello Brigante
- Université Clermont Auvergne, CNRS, SIGMA Clermont, Institut de Chimie de Clermont-Ferrand, F-63000 Clermont-Ferrand, France.
| | - Gilles Mailhot
- Université Clermont Auvergne, CNRS, SIGMA Clermont, Institut de Chimie de Clermont-Ferrand, F-63000 Clermont-Ferrand, France
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106
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Yassine M, Fuster L, Dévier MH, Geneste E, Pardon P, Grélard A, Dufourc E, Al Iskandarani M, Aït-Aïssa S, Garric J, Budzinski H, Mazellier P, Trivella AS. Photodegradation of novel oral anticoagulants under sunlight irradiation in aqueous matrices. CHEMOSPHERE 2018; 193:329-336. [PMID: 29149708 DOI: 10.1016/j.chemosphere.2017.11.036] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/08/2017] [Revised: 11/01/2017] [Accepted: 11/08/2017] [Indexed: 06/07/2023]
Abstract
Kinetics of photodegradation of novel oral anticoagulants dabigatran, rivaroxaban, and apixaban were studied under simulated solar light irradiation in purified, mineral, and river waters. Dabigatran and rivaroxaban underwent direct photolysis with polychromatic quantum yields of 2.2 × 10-4 and 4.4 × 10-2, respectively. The direct photodegradation of apixaban was not observed after 19 h of irradiation. Kinetics of degradation of rivaroxaban was not impacted by the nature of the aqueous matrix while photosensitization from nitrate ions was observed for dabigatran and apixaban dissolved in a mineral water. The photosensitized reactions were limited in the tested river water (Isle River, Périgueux, France) certainly due to the hydroxyl radical scavenging effect of the dissolved organic matter. The study of photoproduct structures allowed to identify two compounds for dabigatran. One of them is the 4-aminobenzamidine while the second one is a cyclization product. In the case of rivaroxaban, as studied by very high field NMR, only one photoproduct was observed i.e. a photoisomer. Finally, seven photoproducts were clearly identified from the degradation of apixaban under simulated solar light.
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Affiliation(s)
- Montaha Yassine
- Univ. Bordeaux, UMR EPOC CNRS 5805, LPTC, F-33405, Talence, France; CNRS, EPOC, UMR 5805, LPTC, F-33400, Talence, France; National Council of Scientific Research (NCSR), Lebanese Atomic Energy Commission (LAEC), Laboratory of Analysis of Organic Pollutants (LAOP), B. P. 11-8281, Riad El Solh, 1107 2260, Beirut, Lebanon
| | - Laura Fuster
- Univ. Bordeaux, UMR EPOC CNRS 5805, LPTC, F-33405, Talence, France; CNRS, EPOC, UMR 5805, LPTC, F-33400, Talence, France
| | - Marie-Hélène Dévier
- Univ. Bordeaux, UMR EPOC CNRS 5805, LPTC, F-33405, Talence, France; CNRS, EPOC, UMR 5805, LPTC, F-33400, Talence, France
| | - Emmanuel Geneste
- Univ. Bordeaux, UMR EPOC CNRS 5805, LPTC, F-33405, Talence, France; CNRS, EPOC, UMR 5805, LPTC, F-33400, Talence, France
| | - Patrick Pardon
- Univ. Bordeaux, UMR EPOC CNRS 5805, LPTC, F-33405, Talence, France; CNRS, EPOC, UMR 5805, LPTC, F-33400, Talence, France
| | - Axelle Grélard
- Institute of Chemistry and Biology of Membranes and Nano-objects, CBMN UMR 5248, CNRS University of Bordeaux, Bordeaux National Institute of Technology, Allée Geoffroy St Hilaire, Pessac, France
| | - Erick Dufourc
- Institute of Chemistry and Biology of Membranes and Nano-objects, CBMN UMR 5248, CNRS University of Bordeaux, Bordeaux National Institute of Technology, Allée Geoffroy St Hilaire, Pessac, France
| | - Mohamad Al Iskandarani
- National Council of Scientific Research (NCSR), Lebanese Atomic Energy Commission (LAEC), Laboratory of Analysis of Organic Pollutants (LAOP), B. P. 11-8281, Riad El Solh, 1107 2260, Beirut, Lebanon
| | - Selim Aït-Aïssa
- INERIS, Unité d'écotoxicologie in Vitro et in Vivo (ECOT), Verneuil-en-Halatte, France
| | - Jeanne Garric
- Irstea, UR MALY, Centre de Lyon-Villeurbanne, F-69616, Villeurbanne, France
| | - Hélène Budzinski
- Univ. Bordeaux, UMR EPOC CNRS 5805, LPTC, F-33405, Talence, France; CNRS, EPOC, UMR 5805, LPTC, F-33400, Talence, France
| | - Patrick Mazellier
- Univ. Bordeaux, UMR EPOC CNRS 5805, LPTC, F-33405, Talence, France; CNRS, EPOC, UMR 5805, LPTC, F-33400, Talence, France
| | - Aurélien S Trivella
- Univ. Bordeaux, UMR EPOC CNRS 5805, LPTC, F-33405, Talence, France; CNRS, EPOC, UMR 5805, LPTC, F-33400, Talence, France.
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107
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Liu H, Yang Y, Sun H, Zhao L, Liu Y. Fate of tetracycline in enhanced biological nutrient removal process. CHEMOSPHERE 2018; 193:998-1003. [PMID: 29874776 DOI: 10.1016/j.chemosphere.2017.11.136] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/31/2017] [Revised: 11/21/2017] [Accepted: 11/22/2017] [Indexed: 06/08/2023]
Abstract
This study investigated the fate of tetracycline at four different concentrations of 20 μg L-1, 50 μg L-1, 2 and 5 mg L-1 in the enhanced biological nutrient removal processes. At the tetracycline concentration below 50 μg L-1, no obvious inhibition on the biological N&P removal was observed, while the inhibition appeared after the tetracycline concentration was increased to 2 and 5 mg L-1. It was found that about 44%-87% of tetracycline was removed through biodegradation, while only 3%-6% of removal was due to biosorption. These results clearly suggested that a substantial amount of tetracycline eventually ended up in sludge with the tetracycline content of 23 mg to 4.5 g kg-1 sludge depending on the tetracycline concentration. Obviously, this could pose an emerging challenge to the post sludge disposal and reuse. Furthermore, phthalic anhydride was detected as a biodegradation byproduct of tetracycline, which has been known to be more toxic than tetracycline to aquatic organisms. Consequently, this study offers in-depth insights into the fate of tetracycline in the enhanced biological nutrient removal process, highlighting on the emerging ecological risks associated with sludge disposal and effluent discharge.
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Affiliation(s)
- Hang Liu
- Advanced Environmental Biotechnology Centre, Nanyang Environment & Water Research Institute, Nanyang Technological University, 1 Cleantech Loop, Singapore, 637141, Singapore; School of Environmental Science and Engineering, Tianjin University, Tianjin 300072, China
| | - Yongkui Yang
- School of Environmental Science and Engineering, Tianjin University, Tianjin 300072, China
| | - Huifang Sun
- School of Civil and Environmental Engineering, Nanyang Technological University, 50 Nanyang Avenue, Singapore, 639798, Singapore
| | - Lin Zhao
- School of Environmental Science and Engineering, Tianjin University, Tianjin 300072, China.
| | - Yu Liu
- Advanced Environmental Biotechnology Centre, Nanyang Environment & Water Research Institute, Nanyang Technological University, 1 Cleantech Loop, Singapore, 637141, Singapore; School of Civil and Environmental Engineering, Nanyang Technological University, 50 Nanyang Avenue, Singapore, 639798, Singapore.
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108
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Kong J, Li R, Wang F, Chen P, Liu H, Liu G, Lv W. Sulfate radical-induced transformation of trimethoprim with CuFe2O4/MWCNTs as a heterogeneous catalyst of peroxymonosulfate: mechanisms and reaction pathways. RSC Adv 2018; 8:24787-24795. [PMID: 35542124 PMCID: PMC9082366 DOI: 10.1039/c8ra04103b] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/14/2018] [Accepted: 06/16/2018] [Indexed: 12/18/2022] Open
Abstract
Trimethoprim (TMP), a typical antibiotic pharmaceutical, has received extensive attention due to its potential biotoxicity. In this study, CuFe2O4, which was used to decorate MWCNTs via a sol–gel combustion synthesis method, was introduced to generate powerful radicals from peroxymonosulfate (PMS) for TMP degradation in an aqueous solution. The results showed that almost 90% of TMP was degraded within 24 min with the addition of 0.6 mM PMS and 0.2 g L−1 CuFe2O4/MWCNTs. The degradation rate was enhanced with the increase in initial PMS doses, catalyst loading and pH. A fairly low leaching of Cu and Fe was observed during the reaction, indicating the high potential recyclability and stability of CuFe2O4/MWCNTs. Electron paramagnetic resonance analysis confirmed that the CuFe2O4/MWCNT-PMS system had the capacity to generate ·OH and SO4˙−, whereas quenching experiments further confirmed that the catalytic reaction was dominated by SO4˙−. A total of 11 intermediate products of TMP was detected via mass spectrometry, and different transformation pathways were further proposed. Overall, this study showed a systematic evaluation regarding the degradation process of TMP by the CuFe2O4/MWCNT-PMS system. The degradation of trimethoprim (TMP) in heterogeneously activated peroxymonosulfate (PMS) oxidation processes using CuFe2O4/MWCNTs as the catalyst.![]()
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Affiliation(s)
- Jing Kong
- School of Environmental Science and Engineering
- Guangdong University of Technology
- Guangzhou 510006
- China
| | - Ruobai Li
- School of Environmental Science and Engineering
- Guangdong University of Technology
- Guangzhou 510006
- China
| | - Fengliang Wang
- School of Environmental Science and Engineering
- Guangdong University of Technology
- Guangzhou 510006
- China
| | - Ping Chen
- School of Environment
- Tsinghua University
- Beijing 100084
- China
| | - Haijin Liu
- School of Environment
- Henan Normal University
- Henan Key Laboratory for Environmental Pollution Control
- Xinxiang 453007
- China
| | - Guoguang Liu
- School of Environmental Science and Engineering
- Guangdong University of Technology
- Guangzhou 510006
- China
| | - Wenying Lv
- School of Environmental Science and Engineering
- Guangdong University of Technology
- Guangzhou 510006
- China
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109
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Kamińska B, Majewska K, Skwierawska A, Kozłowska-Tylingo K. Degradation kinetics and mechanism of pentoxifylline by ultraviolet activated peroxydisulfate. RSC Adv 2018; 8:23648-23656. [PMID: 35540247 PMCID: PMC9081778 DOI: 10.1039/c8ra02631a] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/26/2018] [Accepted: 06/18/2018] [Indexed: 11/30/2022] Open
Abstract
Degradation of pentoxifylline (PTX) by sodium peroxydisulfate (SPDS) assisted by UV irradiation has been investigated in deionized water. The treatment was more favorable over direct photolysis or peroxydisulfate oxidation alone. The effects of various parameters, including different dosage of oxidant agent, PTX concentration, initial solution pH levels, and the presence of inorganic ions like chloride, nitrate and carbonate have been evaluated. The rate of PTX decomposition depends on the oxidant agent dose. The highest degradation was determined at pH 10.5, which can be explained by the generation of additional hydroxyl radicals (HO˙) in the reaction between sulfate radicals and hydroxide ions. The presence of inorganic ions, especially the carbonate ions quench valuable sulfate radicals and have successfully retarded the PTX decomposition. Six PTX oxidation products were identified using UPLC-QTOF-MS for trials in a basic environment. The main degradation product (3,7-dimethyl-6-(5-oxohexyloxy)-3,7-dihydro-2H-purin-2-one) was isolated by column chromatography and identified by 1HNMR and LC MS analyzes. Degradation of pentoxifylline (PTX) by sodium peroxydisulfate (SPDS) assisted by UV irradiation has been investigated in deionized water.![]()
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Affiliation(s)
- B. Kamińska
- Department of Chemistry and Technology of Functional Materials
- Gdansk University of Technology
- 80-233 Gdansk
- Poland
| | - K. Majewska
- Department of Chemistry and Technology of Functional Materials
- Gdansk University of Technology
- 80-233 Gdansk
- Poland
| | - A. Skwierawska
- Department of Chemistry and Technology of Functional Materials
- Gdansk University of Technology
- 80-233 Gdansk
- Poland
| | - K. Kozłowska-Tylingo
- Department of Pharmaceutical Technology and Biochemistry
- Gdansk University of Technology
- 80-233 Gdansk
- Poland
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110
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Hussain S, Steter JR, Gul S, Motheo AJ. Photo-assisted electrochemical degradation of sulfamethoxazole using a Ti/Ru 0.3Ti 0.7O 2 anode: Mechanistic and kinetic features of the process. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2017; 201:153-162. [PMID: 28654803 DOI: 10.1016/j.jenvman.2017.06.043] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/04/2017] [Revised: 06/16/2017] [Accepted: 06/18/2017] [Indexed: 06/07/2023]
Abstract
This study examined the photo-assisted electrochemical degradation and mineralization of the antibiotic contaminant sulfamethoxazole (SMX). All the experiments were perform using a flow electrolytic cell, in which the influence of the current density (10-60 mA cm-2) and sodium chloride (0.02-0.10 mol L-1) in the supporting electrolyte composition was analyzed. The results showed that the total SMX and 50% TOC removal was achieved in the current density range used. As expected, the degradation kinetics presented a pseudo first order behavior and the rate constant increased from 0.05 min-1 to 0.50 min-1 as the current density raised from 10 to 60 mA cm-1. In addition, the values of the electrical energy per order (EEO) increased from 0.67 to 1.06 kW/hm-3 order-1 as the current density increased from 10 to 60 mAcm-2 and drop from 8.82 to 0.57 kW/hm-3 order-1 at supporting electrolyte concentration of 0.02-0.1 mol L-1. The reaction intermediates identified by liquid chromatography-mass spectrometry allowed proposing a mechanism for the degradation. The use of photo assistance in the electrochemical process involved simultaneous reactions, for example, aromatic ring substitutions and hydroxylation. These reactions led to aromatic rings opening that generated simpler organic molecules, making possible the mineralization of the SMX molecule. Probable degradation pathways were proposed and discussed. Comparison of the efficiencies of the photocatalytic, electrochemical (EC) and photo-assisted electrochemical (PAEC) techniques revealed that the combined process showed a synergism for TOC removal.
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Affiliation(s)
- Sajjad Hussain
- São Carlos Institute of Chemistry, University of São Paulo, Avenida Trabalhador São Carlense 400, 13566-590, São Carlos, SP, Brazil; Faculty of Materials and Chemical Engineering, GIK Institute of Engineering Sciences and Technology, Topi, KPK, 23460, Pakistan
| | - Juliana R Steter
- São Carlos Institute of Chemistry, University of São Paulo, Avenida Trabalhador São Carlense 400, 13566-590, São Carlos, SP, Brazil
| | - Saima Gul
- São Carlos Institute of Chemistry, University of São Paulo, Avenida Trabalhador São Carlense 400, 13566-590, São Carlos, SP, Brazil
| | - Artur J Motheo
- São Carlos Institute of Chemistry, University of São Paulo, Avenida Trabalhador São Carlense 400, 13566-590, São Carlos, SP, Brazil.
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111
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Ji Y, Shi Y, Wang L, Lu J, Ferronato C, Chovelon JM. Sulfate radical-based oxidation of antibiotics sulfamethazine, sulfapyridine, sulfadiazine, sulfadimethoxine, and sulfachloropyridazine: Formation of SO 2 extrusion products and effects of natural organic matter. THE SCIENCE OF THE TOTAL ENVIRONMENT 2017; 593-594:704-712. [PMID: 28363182 DOI: 10.1016/j.scitotenv.2017.03.192] [Citation(s) in RCA: 58] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/04/2017] [Revised: 03/18/2017] [Accepted: 03/19/2017] [Indexed: 06/07/2023]
Abstract
The widespread occurrence of sulfonamide antibiotics in the environment has raised great concerns about their potential to proliferate antibacterial resistance. Sulfate radical (SO4•-) based advanced oxidation processes (SR-AOPs) are promising in-situ chemical oxidation (ISCO) technologies for remediation of soil and groundwater contaminated by antibiotics. The present study reported that thermally activated persulfate oxidation of sulfonamides (SAs) bearing six-membered heterocyclic rings, e.g., sulfamethazine (SMZ), sulfapyridine (SPD), sulfadiazine (SDZ), sulfadimethoxine (SDM), and sulfachloropyridazine (SCP), all produced SO2 extrusion products (SEPs), a phenomenon that is of potential importance, but not systematically studied. As an electrophilic oxidant, SO4•- tends to attack the aniline moiety, the reactive site of SAs, via electro-transfer mechanism. The resulting anilinyl radical cations are subjected to further intermolecular Smiles-type rearrangement to produce SEPs. Formation of SEPs is expected to occur in other SR-AOPs as well. The temperature-dependent evolution pattern of SEP of SMZ, 4-(2-imino-4,6-dimethylpyrimidin-1(2H)-yl)aniline, can be well fitted by kinetic modeling concerning sequential formation and transformation of intermediate product. The presence of natural organic matter (NOM) influenced the evolution patterns of 4-(2-imino-4,6-dimethylpyrimidin-1(2H)-yl)aniline significantly. Toxicological effects of SEPs on ecosystem and human health remain largely unknown, thus, further monitoring studies are highly desirable.
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Affiliation(s)
- Yuefei Ji
- College of Resources and Environmental Sciences, Nanjing Agricultural University, Nanjing 210095, China.
| | - Yuanyuan Shi
- College of Resources and Environmental Sciences, Nanjing Agricultural University, Nanjing 210095, China
| | - Lu Wang
- College of Resources and Environmental Sciences, Nanjing Agricultural University, Nanjing 210095, China
| | - Junhe Lu
- College of Resources and Environmental Sciences, Nanjing Agricultural University, Nanjing 210095, China.
| | - Corinne Ferronato
- Univ Lyon, Université Claude Bernard Lyon 1, CNRS, IRCELYON, F-69626 Villeurbanne, France
| | - Jean-Marc Chovelon
- Univ Lyon, Université Claude Bernard Lyon 1, CNRS, IRCELYON, F-69626 Villeurbanne, France.
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112
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Yang Y, Lu X, Jiang J, Ma J, Liu G, Cao Y, Liu W, Li J, Pang S, Kong X, Luo C. Degradation of sulfamethoxazole by UV, UV/H 2O 2 and UV/persulfate (PDS): Formation of oxidation products and effect of bicarbonate. WATER RESEARCH 2017; 118:196-207. [PMID: 28431352 DOI: 10.1016/j.watres.2017.03.054] [Citation(s) in RCA: 259] [Impact Index Per Article: 37.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/07/2016] [Revised: 03/20/2017] [Accepted: 03/25/2017] [Indexed: 05/27/2023]
Abstract
The frequent detection of sulfamethoxazole (SMX) in wastewater and surface waters gives rise of concerns about their ecotoxicological effects and potential risks to induce antibacterial resistant genes. UV/hydrogen peroxide (UV/H2O2) and UV/persulfate (UV/PDS) advanced oxidation processes have been demonstrated to be effective for the elimination of SMX, but there is still a need for a deeper understanding of product formations. In this study, we identified and compared the transformation products of SMX in UV, UV/H2O2 and UV/PDS processes. Because of the electrophilic nature of SO4-, the second-order rate constant for the reaction of sulfate radical (SO4-) with the anionic form of SMX was higher than that with the neutral form, while hydroxyl radical (OH) exhibited comparable reactivity to both forms. The direct photolysis of SMX predominately occurred through cleavage of the NS bond, rearrangement of the isoxazole ring, and hydroxylation mechanisms. Hydroxylation was the dominant pathway for the reaction of OH with SMX. SO4- favored attack on NH2 group of SMX to generate a nitro derivative and dimeric products. The presence of bicarbonate in UV/H2O2 inhibited the formation of hydroxylated products, but promoted the formation of the nitro derivative and the dimeric products. In UV/PDS, bicarbonate increased the formation of the nitro derivative and the dimeric products, but decreased the formation of the hydroxylated dimeric products. The different effect of bicarbonate on transformation products in UV/H2O2 vs. UV/PDS suggested that carbonate radical (CO3-) oxidized SMX through the electron transfer mechanism similar to SO4- but with less oxidation capacity. Additionally, SO4- and CO3- exhibited higher reactivity to the oxazole ring than the isoxazole ring of SMX. Ecotoxicity of transformation products was estimated by ECOSAR program based on the quantitative structure-activity relationship analysis as well as by experiments using Vibrio fischeri, and these results indicated that the oxidation of SO4- or CO3- with SMX generated more toxic products than those of OH.
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Affiliation(s)
- Yi Yang
- State Key Laboratory of Urban Water Resource and Environment, Harbin Institute of Technology, Harbin, 150090, China
| | - Xinglin Lu
- State Key Laboratory of Urban Water Resource and Environment, Harbin Institute of Technology, Harbin, 150090, China
| | - Jin Jiang
- State Key Laboratory of Urban Water Resource and Environment, Harbin Institute of Technology, Harbin, 150090, China.
| | - Jun Ma
- State Key Laboratory of Urban Water Resource and Environment, Harbin Institute of Technology, Harbin, 150090, China.
| | - Guanqi Liu
- State Key Laboratory of Urban Water Resource and Environment, Harbin Institute of Technology, Harbin, 150090, China
| | - Ying Cao
- State Key Laboratory of Urban Water Resource and Environment, Harbin Institute of Technology, Harbin, 150090, China
| | - Weili Liu
- State Key Laboratory of Urban Water Resource and Environment, Harbin Institute of Technology, Harbin, 150090, China
| | - Juan Li
- State Key Laboratory of Urban Water Resource and Environment, Harbin Institute of Technology, Harbin, 150090, China
| | - Suyan Pang
- Key Laboratory of Green Chemical Engineering and Technology of College of Heilongjiang Province, College of Chemical and Environmental Engineering, Harbin University of Science and Technology, Harbin, Heilongjiang, 150040, China
| | - Xiujuan Kong
- State Key Laboratory of Urban Water Resource and Environment, Harbin Institute of Technology, Harbin, 150090, China
| | - Congwei Luo
- State Key Laboratory of Urban Water Resource and Environment, Harbin Institute of Technology, Harbin, 150090, China
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113
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Oh WD, Dong Z, Ronn G, Lim TT. Surface-active bismuth ferrite as superior peroxymonosulfate activator for aqueous sulfamethoxazole removal: Performance, mechanism and quantification of sulfate radical. JOURNAL OF HAZARDOUS MATERIALS 2017; 325:71-81. [PMID: 27915101 DOI: 10.1016/j.jhazmat.2016.11.056] [Citation(s) in RCA: 39] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/11/2016] [Revised: 11/15/2016] [Accepted: 11/19/2016] [Indexed: 06/06/2023]
Abstract
A surface-active Bi2Fe4O9 nanoplates (BF-nP) was prepared using a facile hydrothermal protocol for sulfamethoxazole (SMX) removal via peroxymonosulfate (PMS). The catalytic activity of BF-nP was superior to other catalysts with the following order of performance: BF-nP>Bi2Fe4O9 (nanocubes)>>Co3O4>Fe2O3 (low temperature co-precipitation method)>Fe2O3 (hydrothermal method)∼Bi2O3∼Bi3+∼Fe3+. The empirical relationship of the apparent rate constant (kapp), BF-nP loading and PMS dosage can be described as follows: kapp=0.69[BF-nP]0.6[PMS]0.4 (R2=0.98). The GC-MS study suggests that the SMX degradation proceed mainly through electron transfer reaction. The XPS study reveals that the interconversion of Fe3+/Fe2+ and Bi3+/Bi5+ couples are responsible for the enhanced PMS activation. The radical scavenging study indicates that SO4- is the dominant reactive radical (>92% of the total SMX degradation). A method to quantify SO4- in the heterogeneous Bi2Fe4O9/PMS systems based on the quantitation of benzoquinone, which is the degradation byproduct of p-hydroxybenzoic acid and SO4-, is proposed. It was found that at least 7.8±0.1μM of SO4- was generated from PMS during the BF-nP/PMS process (0.1gL-1, 0.40mM PMS, natural pH). The Bi2Fe4O9 nanoplates has a remarkable potential for use as a reusable, nontoxic, highly-efficient and stable PMS activator.
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Affiliation(s)
- Wen-Da Oh
- Nanyang Environment and Water Research Institute (NEWRI), Nanyang Technological University, 1 Cleantech Loop, CleanTech One, Singapore 637141, Singapore; Division of Environmental and Water Resources Engineering, School of Civil and Environmental Engineering, Nanyang Technological University, 50 Nanyang Avenue, Singapore 639798, Singapore.
| | - Zhili Dong
- Nanyang Environment and Water Research Institute (NEWRI), Nanyang Technological University, 1 Cleantech Loop, CleanTech One, Singapore 637141, Singapore; School of Materials Science and Engineering, Nanyang Technological University, 50 Nanyang Avenue, Singapore 639798, Singapore
| | - Goei Ronn
- Nanyang Environment and Water Research Institute (NEWRI), Nanyang Technological University, 1 Cleantech Loop, CleanTech One, Singapore 637141, Singapore
| | - Teik-Thye Lim
- Nanyang Environment and Water Research Institute (NEWRI), Nanyang Technological University, 1 Cleantech Loop, CleanTech One, Singapore 637141, Singapore; Division of Environmental and Water Resources Engineering, School of Civil and Environmental Engineering, Nanyang Technological University, 50 Nanyang Avenue, Singapore 639798, Singapore.
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114
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Zhang R, Yang Y, Huang CH, Zhao L, Sun P. Kinetics and modeling of sulfonamide antibiotic degradation in wastewater and human urine by UV/H2O2 and UV/PDS. WATER RESEARCH 2016; 103:283-292. [PMID: 27472909 DOI: 10.1016/j.watres.2016.07.037] [Citation(s) in RCA: 98] [Impact Index Per Article: 12.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/02/2016] [Revised: 07/13/2016] [Accepted: 07/16/2016] [Indexed: 05/12/2023]
Abstract
Sulfonamide antibiotics have been frequently detected in the aquatic environment and are of emerging concern due to their adverse bio-effect and potential of inducing antibiotic resistance. This study investigated the degradation kinetics of sulfonamide antibiotics in synthetic wastewater and hydrolyzed human urine by low pressure (LP) UV, UV/H2O2 and UV/peroxydisulfate (PDS). Direct photolysis rates of sulfonamide antibiotics varied and depended on the structures. Sulfonamides with a five-membered heterocyclic group underwent faster direct photolysis. For indirect photolysis processes, second-order rate constants of sulfonamide antibiotics with hydroxyl radical, sulfate radical and carbonate radical were determined, which were (6.21-9.26) × 10(9), (0.77-16.1) × 10(10) and (1.25-8.71) × 10(8) M(-1) s(-1), respectively. A dynamic model was applied and successfully predicted the degradation kinetics of sulfonamides in different water matrices. In synthetic wastewater, carbonate radical contributed to approximately 10% of the overall removal, whereas in synthetic hydrolyzed urine, carbonate radical was the dominant reactive species to degrade sulfonamides. Sulfonamide antibiotics were eliminated more efficiently in synthetic hydrolyzed urine than in synthetic wastewater and UV/PDS was more efficient than UV/H2O2 to degrade most sulfonamides. Energy evaluation showed that UV/PDS costs less energy than LPUV and UV/H2O2 under the experimental conditions applied in this study, particularly for sulfonamides whose indirect photolysis overweighed direct photolysis. By varying UV dose and oxidant dose, the UV/H2O2 process can be optimized to achieve higher efficiency than the UV/PDS process in synthetic wastewater.
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Affiliation(s)
- Ruochun Zhang
- School of Environmental Science and Engineering, Tianjin University, Tianjin 300072, China
| | - Yongkui Yang
- School of Environmental Science and Engineering, Tianjin University, Tianjin 300072, China
| | - Ching-Hua Huang
- School of Civil and Environmental Engineering, Georgia Institute of Technology, Atlanta, GA 30332, United States
| | - Lin Zhao
- School of Environmental Science and Engineering, Tianjin University, Tianjin 300072, China.
| | - Peizhe Sun
- School of Civil and Environmental Engineering, Georgia Institute of Technology, Atlanta, GA 30332, United States.
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