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Joseph NK, Koshy VJ, Aravind UK, Aravindakumar CT. Photo-transformation of ofloxacin in natural aquatic conditions: Impact of indirect photolysis on the product profile and transformation mechanism. CHEMOSPHERE 2024; 361:142484. [PMID: 38830465 DOI: 10.1016/j.chemosphere.2024.142484] [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: 02/27/2024] [Revised: 05/26/2024] [Accepted: 05/28/2024] [Indexed: 06/05/2024]
Abstract
The natural phototransformation of organic pollutants in the environment depends on several water constituents, including inorganic ions, humic substances, and pH. However, the literature information concerning the influence of various water components on the amount of phototransformation and their impact on the development of various transformation products (TPs) is minimal. This study investigated the phototransformation of ofloxacin (OFL), a fluoroquinolone antibiotic, in the presence of various water components such as cations (K+, Na+, Ca2+, NH4+, Mg2+), anions (NO3-, SO42-, HCO3-, CO32-, PO43-), pH, and humic substances when exposed to natural sunlight. The study reveals that neutral pH levels (0.39374 min⁻1) enhance the phototransformation of OFL in aquatic environments. Carbonate, among anions, shows the highest rate constant (2.89966 min⁻1), significantly influencing OFL phototransformation, while all anions exhibit a notable impact. In aquatic environments, indirect phototransformation of OFL, driven by increased reactive oxygen species, expedites light-induced reactions, potentially enhancing OFL phototransformation. A clear difference was visible in the type of transformation products (TPs) formed during direct and indirect photolysis. The impact of indirect photolysis in the product profile was evaluated by examining the unique properties of TPs in direct and indirect photolysis. The primary transformation products were generated by oxidation and cleavage processes directed towards the ofloxacin piperazinyl, oxazine, and carboxyl groups. The toxicity assessment of TPs derived from OFL revealed that among the 26 identified TPs, TP3 (demethylated product), TP7 and TP8 (decarboxylated products), and TP15 (piperazine ring cleaved product) could potentially have some toxicological effects. These findings suggest that the phototransformation of OFL in the presence of various water components is necessary when assessing this antibiotic's environmental fate.
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Affiliation(s)
- Nisha K Joseph
- Inter-University Instrumentation Centre (IUIC), Mahatma Gandhi University (MGU), Kottayam, 686560, Kerala, India
| | - Valsamma J Koshy
- Inter-University Instrumentation Centre (IUIC), Mahatma Gandhi University (MGU), Kottayam, 686560, Kerala, India
| | - Usha K Aravind
- School of Environmental Studies, Cochin University of Science & Technology (CUSAT), Kochi, 682022, Kerala, India
| | - Charuvila T Aravindakumar
- Inter-University Instrumentation Centre (IUIC), Mahatma Gandhi University (MGU), Kottayam, 686560, Kerala, India; School of Environmental Sciences, Mahatma Gandhi University (MGU), Kottayam, 686560, Kerala, India.
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Wu P, Mo W, Chen Z, Wang Y, Cui Y, Zhang Y, Song Y, Jin L, Hou Y, Zhu F, Cao B, Li N. The removal of cyhalofop-butyl in soil by surplus Rhodopseudanonas palustris in wastewater purification. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2019; 245:168-172. [PMID: 31152960 DOI: 10.1016/j.jenvman.2019.03.027] [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: 03/21/2018] [Revised: 03/04/2019] [Accepted: 03/06/2019] [Indexed: 06/09/2023]
Abstract
The biorestoration of cyhalofop-butyl and fertility in soil using Rhodopseudanonas palustris (R. palustris) in the treated wastewater were investigated in this research. Cyhalofop-butyl was not degraded under control group. The treated wastewater containing R. palustris degraded cyhalofop-butyl and remediated fertility. Interestingly, the cyhalofop-butyl-hydrolyzing carboxylesterase gene was expressed after inoculation 24 h. Subsequently, the cyhalofop-butyl-hydrolyzing carboxylesterase were synthesized to degrade cyhalofop-butyl. The cyhalofop-butyl started to be degraded after inoculation 24 h. The cyhalofop-butyl as stimulus signal induced cyhalofop-butyl-hydrolyzing carboxylesterase gene expression through signal transduction pathway. This process took 24 h for R. palustris as they were ancient bacteria. The residual organics in the wastewater provided sufficient carbon sources and energy for R. palustris under three dosage groups. The new method completed the remediation of cyhalofop-butyl pollution, the improvement of soil fertility and soybean processing wastewater treatment simultaneously, and realized the resource reutilization of wastewater and R. palustris as sludge.
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Affiliation(s)
- Pan Wu
- School of Environment and Resources, Dalian Minzu University, Dalian, 116600, China; School of Resources and Environment, Northeast Agricultural University, Harbin, 150030, China
| | - WenTao Mo
- School of Environment and Resources, Dalian Minzu University, Dalian, 116600, China
| | - Zhaobo Chen
- School of Environment and Resources, Dalian Minzu University, Dalian, 116600, China
| | - Yanling Wang
- Department of Anesthesiology, The Third Affiliated Hospital of SunYat-Sen University, Guangzhou, 510630, China
| | - Yubo Cui
- School of Environment and Resources, Dalian Minzu University, Dalian, 116600, China.
| | - Ying Zhang
- School of Environment and Resources, Dalian Minzu University, Dalian, 116600, China; School of Resources and Environment, Northeast Agricultural University, Harbin, 150030, China.
| | - Yantao Song
- School of Environment and Resources, Dalian Minzu University, Dalian, 116600, China
| | - Liming Jin
- School of Environment and Resources, Dalian Minzu University, Dalian, 116600, China
| | - Yanxi Hou
- School of Environment and Resources, Dalian Minzu University, Dalian, 116600, China
| | - Feifei Zhu
- Forest and Soil Ecology, Institute of Applied Ecology, Chinese Academy of Sciences, Shenyang, 110164, China
| | - Bo Cao
- School of Resources and Environment, Northeast Agricultural University, Harbin, 150030, China
| | - Ning Li
- School of Environment and Resources, Dalian Minzu University, Dalian, 116600, China; School of Resources and Environment, Northeast Agricultural University, Harbin, 150030, China
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Wu P, Chen Z, Zhang Y, Wang Y, Zhu F, Cao B, Wu Y, Li N. Rhodopseudomonas palustris wastewater treatment: Cyhalofop-butyl removal, biochemicals production and mathematical model establishment. BIORESOURCE TECHNOLOGY 2019; 282:390-397. [PMID: 30884459 DOI: 10.1016/j.biortech.2018.11.087] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/17/2018] [Revised: 11/22/2018] [Accepted: 11/23/2018] [Indexed: 06/09/2023]
Abstract
Simultaneous (SPW and cyhalofop-butyl) wastewater treatment and the production of biochemicals by Rhodopseudomonas palustris (R. palustris) was investigated with supplementation of soybean processing wastewater (SPW). Compared to control group, cyhalofop-butyl was removed and single cell protein, carotenoid, bacteriochlorophyll productions were enhanced with the supplementation of SPW. Cyhalofop-butyl removal reached 100% after 5 days under 4000 mg/L COD group. Cyhalofop-butyl induced chbH gene expression to synthesize cyhalofop-butyl-hydrolyzing carboxylesterase through activating MAPKKKs, MAPKKs, MAPKs genes in MAPK signal transduction pathway. The induction process took one day for R. palustris. However, lack of organics in original wastewater did not maintain R. palustris growth for over one day. The supplementation of SPW provided sufficient carbon source. This new method resulted in the mixed wastewater treatment and improvement of biochemicals simultaneously, as well as the realization of reutilization of R. palustris. High-order non-linear mathematical model of the relationship between Rchb, Xc, and Xt was established.
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Affiliation(s)
- Pan Wu
- School of Environment and Resources, Dalian Minzu University, Dalian 116600, China; School of Resources and Environment, Northeast Agricultural University, ChinSchool of Environment and Resources, Harbin 150030, China
| | - Zhaobo Chen
- School of Environment and Resources, Dalian Minzu University, Dalian 116600, China; School of Resources and Environment, Northeast Agricultural University, ChinSchool of Environment and Resources, Harbin 150030, China
| | - Ying Zhang
- School of Environment and Resources, Dalian Minzu University, Dalian 116600, China; School of Resources and Environment, Northeast Agricultural University, ChinSchool of Environment and Resources, Harbin 150030, China.
| | - Yanling Wang
- Department of Anesthesiology, the Third Affiliated Hospital of SunYat-Sen University, Guangzhou 510630, China
| | - Feifei Zhu
- Forest and Soil Ecology, Institute of Applied Ecology, Chinese Academy of Sciences, Shenyang 110164, China
| | - Bo Cao
- School of Environment and Resources, Dalian Minzu University, Dalian 116600, China
| | - Yuan Wu
- School of Environment and Resources, Dalian Minzu University, Dalian 116600, China; School of Resources and Environment, Northeast Agricultural University, ChinSchool of Environment and Resources, Harbin 150030, China
| | - Ning Li
- School of Environment and Resources, Dalian Minzu University, Dalian 116600, China; School of Resources and Environment, Northeast Agricultural University, ChinSchool of Environment and Resources, Harbin 150030, China
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Zheng Z, Zhang C, Shi H, Liu Z, Duan J, Wang M. Photolysis of cyflufenamid in liquid media. WATER SCIENCE AND TECHNOLOGY : A JOURNAL OF THE INTERNATIONAL ASSOCIATION ON WATER POLLUTION RESEARCH 2018; 78:424-431. [PMID: 30101777 DOI: 10.2166/wst.2018.312] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
The photolysis of cyflufenamid (CFA) in different organic solvents and water under ultraviolet irradiation was investigated. The photolytic rate constant and photolytic half-life were measured for the different solutions. Factors influencing the photolysis of CFA were investigated, including initial concentration, types of solvent, pH, occurrence of catalyst (TiO2), and environmental substances (Fe3+, Fe2+, NO3 -, NO2 -). Photolysis of CFA followed first-order kinetics in various systems, and the photolytic rate of CFA decreased with increased initial concentration. Photolytic rates of CFA in different solvents were as follows: n-hexane > methanol > acetonitrile > ultrapure water > ethyl acetate. The pH had a significant effect on the photolysis of CFA, and the photolysis rate reached its peak at pH 9.0. NO2 - and TiO2 had positive effects on the photolysis of CFA, while Fe2+ had an adverse effect. NO3 - in aqueous solution had no effect on the photolysis of CFA. In addition, the rates of photolysis were accelerated at lower concentrations of Fe3+ (0.5-5 mmol L-1) and decreased at higher concentrations (10 mmol L-1). Moreover, a main photolytic product of CFA was confirmed to be N-cyclopropoxy-2,3-difluoro-6-(trifluoromethyl)benzamide, and cleavage of the amido bond was proposed to be the predicted photolysis pathway in n-hexane.
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Affiliation(s)
- Zhangyu Zheng
- Department of Pesticide Science, College of Plant Protection, Nanjing Agricultural University, State and Local Joint Engineering Research Center of Green Pesticide Invention and Application, Nanjing 210095, China
| | - Chunyan Zhang
- Department of Pesticide Science, College of Plant Protection, Nanjing Agricultural University, State and Local Joint Engineering Research Center of Green Pesticide Invention and Application, Nanjing 210095, China
| | - Haiyan Shi
- Department of Pesticide Science, College of Plant Protection, Nanjing Agricultural University, State and Local Joint Engineering Research Center of Green Pesticide Invention and Application, Nanjing 210095, China
| | - Zhiwei Liu
- Department of Pesticide Science, College of Plant Protection, Nanjing Agricultural University, State and Local Joint Engineering Research Center of Green Pesticide Invention and Application, Nanjing 210095, China
| | - Jinsheng Duan
- Department of Pesticide Science, College of Plant Protection, Nanjing Agricultural University, State and Local Joint Engineering Research Center of Green Pesticide Invention and Application, Nanjing 210095, China; Institute of Plant Protection and Agro-Products Safety, Anhui Academy of Agricultural Sciences, Key Laboratory of Agro-Product Safety Risk Evaluation (Hefei), Hefei 230031, China E-mail:
| | - Minghua Wang
- Department of Pesticide Science, College of Plant Protection, Nanjing Agricultural University, State and Local Joint Engineering Research Center of Green Pesticide Invention and Application, Nanjing 210095, China
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Katagi T. Direct photolysis mechanism of pesticides in water. JOURNAL OF PESTICIDE SCIENCE 2018; 43:57-72. [PMID: 30363143 PMCID: PMC6140697 DOI: 10.1584/jpestics.d17-081] [Citation(s) in RCA: 42] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/16/2017] [Accepted: 01/13/2018] [Indexed: 05/14/2023]
Abstract
Photodegradation is one of the most important abiotic transformations for pesticides in the aquatic environment, and the high energy of sunlight causes characteristic reactions such as bond scission, cyclization, and rearrangement, which are scarcely observed in hydrolysis and microbial degradation. This review deals with direct photolysis via excitation of a pesticide by absorbing natural or artificial sunlight in order to know its basic photochemistry, and indirect photolysis meaning either sensitization by dissolved organic matters or oxidation by reactive oxygen species is basically excluded. Several experimental approaches including spectroscopic techniques together with theoretical calculations are first discussed from the viewpoint of the reaction mechanisms in direct photolysis. Then, the typical photoreactions of pesticides are summarized by chemical classes and/or functional groups and discussed as far as possible in relation to their mechanisms.
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Affiliation(s)
- Toshiyuki Katagi
- Environmental Health Science Laboratory, Sumitomo Chemical Co., Ltd
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Deng L, Shi J, Singh RP, Yang C, Wang YL. WITHDRAWN: Formation of TCNM from polyDADMAC during UV irradiation combined with chlorination treatment. CHEMOSPHERE 2015:S0045-6535(14)01458-1. [PMID: 25637947 DOI: 10.1016/j.chemosphere.2014.12.030] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/22/2014] [Revised: 12/02/2014] [Accepted: 12/12/2014] [Indexed: 06/04/2023]
Abstract
This article has been withdrawn at the request of the author(s) and/or editor. The Publisher apologizes for any inconvenience this may cause. The full Elsevier Policy on Article Withdrawal can be found at http://www.elsevier.com/locate/withdrawalpolicy.
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Affiliation(s)
- Lin Deng
- Department of Municipal Engineering, Southeast University, Nanjing 210096, China.
| | - Jincheng Shi
- Department of Municipal Engineering, Southeast University, Nanjing 210096, China
| | | | - Caiqian Yang
- Department of Municipal Engineering, Southeast University, Nanjing 210096, China
| | - Yung-Li Wang
- School of Civil and Environmental Engineering, Georgia Institute of Technology, Atlanta, GA 30332, United States
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Hammami H, Rashed Mohassel MH, Parsa M, Bannayan-Aval M, Zand E, Hassanzadeh-Khayyat M, Nassirli H. Photochemical behavior of sethoxydim in the presence of vegetable oils. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2014; 62:6263-6268. [PMID: 24932839 DOI: 10.1021/jf501447x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
The photodecomposition of herbicides may be affected by adding vegetable oils to the spray tank. In this study nine vegetable oils were compared to assess the photodecomposition of sethoxydim under natural light conditions. The experiment was conducted as completely randomized factorial design with three replicates at the College of Agriculture, Ferdowsi University of Mashhad, Iran, in 2013. Each herbicidal solution (with and without vegetable oil) was exposed to sunshine with time intervals of 0, 5, 10, 20, 30, 60, 120, and 240 min. The results revealed that the half-life value was increased by adding castor bean and cottonseed oils to 1.39- and 1.18-fold, respectively, compared to nonvegetable oil. These values for turnip, olive, corn, soybean, sunflower, canola, and sesame oils were decreased down to 4.74-, 2.38-, 1.81-, 1.75-, 1.52-, 1.28-, and 1.11-fold, respectively. A positive relationship existed between the half-life of sethoxydim in the presence of vegetable oils and their viscosity. However, a negative relationship was monitored between unsaturated/saturated fatty acids ratio and the monounsaturated value with half-life. A positive relationship also existed between saturated fatty acids, polyunsaturated fatty acids, palmitic acid, and linoleic acid with half-life. This study revealed that the amount of fatty acids in vegetable oils is a determining factor in preventing or facilitating the photodecomposition of sethoxydim.
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Affiliation(s)
- Hossein Hammami
- Department of Agronomy, College of Agriculture, Ferdowsi University of Mashhad , Mashhad, Iran
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Hidaka H, Tsukamoto T, Mitsutsuka Y, Takamura T, Serpone N. Photochemical and Ga2O3-photoassisted decomposition of the insecticide Fipronil in aqueous media upon UVC radiation. NEW J CHEM 2014. [DOI: 10.1039/c4nj00527a] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Fipronil is degraded photolytically and photocatalytically (β-Ga2O3 and TiO2) in aqueous media under UVC illumination and under reductive and oxidative conditions.
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Affiliation(s)
- Hisao Hidaka
- Department of Chemistry
- Meisei Universtiy
- Tokyo, Japan
| | | | | | - Takeji Takamura
- Department of Chemistry
- Kanagawa Institute of Technology
- Atsugi, Japan
| | - Nick Serpone
- PhotoGreen Laboratory
- Dipartimento di Chimica
- Università di Pavia
- Pavia 27100, Italy
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Furman OS, Yu M, Teel AL, Watts RJ. Water quality parameters controlling the photodegradation of two herbicides in surface waters of the Columbia Basin, Washington. CHEMOSPHERE 2013; 93:1734-1741. [PMID: 23800589 DOI: 10.1016/j.chemosphere.2013.05.050] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/18/2013] [Revised: 05/15/2013] [Accepted: 05/20/2013] [Indexed: 06/02/2023]
Abstract
The water quality parameters nitrate-nitrogen, dissolved organic carbon, and suspended solids were correlated with photodegradation rates of the herbicides atrazine and 2,4-D in samples collected from four sites in the Columbia River Basin, Washington, USA. Surface water samples were collected in May, July, and October 2010 and analyzed for the water quality parameters. Photolysis rates for the two herbicides in the surface water samples were then evaluated under a xenon arc lamp. Photolysis rates of atrazine and 2,4-D were similar with rate constants averaging 0.025 h(-1) for atrazine and 0.039 h(-1) for 2,4-D. Based on multiple regression analysis, nitrate-nitrogen was the primary predictor of photolysis for both atrazine and 2,4-D, with dissolved organic carbon also a predictor for some sites. However, at sites where suspended solids concentrations were elevated, photolysis rates of the two herbicides were controlled by the suspended solids concentration. The results of this research provide a basis for evaluating and predicting herbicide photolysis rates in shallow surface waters.
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Affiliation(s)
- Olha S Furman
- Department of Civil & Environmental Engineering, Washington State University, Pullman, WA 99163-2910, United States.
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Abstract
In this chapter, most of the reported work deals with the photochemistry of carbonyl compounds; however, the photoreactions of other functions, such as the photo-Claisen rearrangement or the photocleavage of cyclic ethers, are also included. In the present volume, time coverage is 2010–2011, and only original research articles are quoted. In general, reviews or purely theoretical calculations are not systematically included. As usually, the material is organized according to established types of reactions (e.g., Norrish I/II, hydrogen abstraction, Paternò-Büchi, photoelimination, photo-Fries/photo-Claisen, etc.). After presenting the basic photochemical aspects, more specific findings are reported. They include synthetic applications, stereoselectivity, and biological or technological implications. Next, the attention is focused on photochemical reactions in anisotropic media, including (micro)heterogeneous or supramolecular systems, solid matrixes or fully organized crystals. Finally, mechanistic studies based on direct experimental evidence are highlighted, especially when transient absorption spectroscopy or related ultrafast detection are employed.
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Affiliation(s)
- M. Consuelo Jiménez
- Departamento de Química, Instituto de Tecnología Química UPV-CSIC Universidad Politécnica de Valencia camino de Vera s/n, E-46022 Valencia Spain
| | - Miguel A. Miranda
- Departamento de Química, Instituto de Tecnología Química UPV-CSIC Universidad Politécnica de Valencia camino de Vera s/n, E-46022 Valencia Spain
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