101
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Yan M, Yan Y, Wu Y, Shi W, Hua Y. Microwave-assisted synthesis of monoclinic–tetragonal BiVO4 heterojunctions with enhanced visible-light-driven photocatalytic degradation of tetracycline. RSC Adv 2015. [DOI: 10.1039/c5ra13684a] [Citation(s) in RCA: 36] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
In this study, BiVO4 photocatalysts of different crystalline phases (monoclinic scheelite (M-phase), tetragonal zircon (T-phase) and monoclinic–tetragonal heterojunction (M–T)) have been successfully synthesized via a facile microwave-assisted method.
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Affiliation(s)
- Ming Yan
- School of Material Science and Engineering
- Jiangsu University
- Zhenjiang 212013
- China
| | - Yan Yan
- School of Chemistry and Chemical Engineering
- Jiangsu University
- Zhenjiang 212013
- China
| | - Yilin Wu
- School of Chemistry and Chemical Engineering
- Jiangsu University
- Zhenjiang 212013
- China
| | - Weidong Shi
- School of Chemistry and Chemical Engineering
- Jiangsu University
- Zhenjiang 212013
- China
| | - Yinqun Hua
- School of Material Science and Engineering
- Jiangsu University
- Zhenjiang 212013
- China
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102
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Machado TC, Pizzolato TM, Arenzon A, Segalin J, Lansarin MA. Photocatalytic degradation of rosuvastatin: analytical studies and toxicity evaluations. THE SCIENCE OF THE TOTAL ENVIRONMENT 2015; 502:571-577. [PMID: 25300021 DOI: 10.1016/j.scitotenv.2014.09.076] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/27/2014] [Revised: 09/22/2014] [Accepted: 09/22/2014] [Indexed: 06/04/2023]
Abstract
Photocatalytic degradation of rosuvastatin, which is a drug that has been used to reduce blood cholesterol levels, was studied in this work employing ZnO as catalyst. The experiments were carried out in a temperature-controlled batch reactor that was irradiated with UV light. Preliminary the effects of the photocatalyst loading, the initial pH and the initial rosuvastatin concentration were evaluated. The experimental results showed that rosuvastatin degradation is primarily a photocatalytic process, with pseudo-first order kinetics. The byproducts that were generated during the oxidative process were identified using nano-ultra performance liquid chromatography tandem mass spectrometry (nano-UPLC-MS/MS) and acute toxicity tests using Daphnia magna were done to evaluate the toxicity of the untreated rosuvastatin solution and the reactor effluent.
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Affiliation(s)
- Tiele Caprioli Machado
- Chemical Engineering Department, Federal University of Rio Grande do Sul, Rua Engenheiro Luiz Englert s/n, CEP: 90040-040 Porto Alegre, RS, Brazil.
| | - Tânia Mara Pizzolato
- Chemical Institute, Federal University of Rio Grande do Sul, Avenida Bento Gonçalves, 9500, CEP: 91501-970 Porto Alegre, RS, Brazil
| | - Alexandre Arenzon
- Ecology Center, Federal University of Rio Grande do Sul, Avenida Bento Gonçalves, 9500, CEP: 91501-970 Porto Alegre, RS, Brazil
| | - Jeferson Segalin
- Biotechnology Center, Federal University of Rio Grande do Sul, Avenida Bento Gonçalves, 9500, CEP: 91501-970 Porto Alegre, RS, Brazil
| | - Marla Azário Lansarin
- Chemical Engineering Department, Federal University of Rio Grande do Sul, Rua Engenheiro Luiz Englert s/n, CEP: 90040-040 Porto Alegre, RS, Brazil
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103
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Photocatalytic degradation of tetracycline using nanosized titanium dioxide in aqueous solution. INTERNATIONAL JOURNAL OF ENVIRONMENTAL SCIENCE AND TECHNOLOGY 2014. [DOI: 10.1007/s13762-014-0706-9] [Citation(s) in RCA: 96] [Impact Index Per Article: 9.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/07/2022]
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104
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Hu X, Fan J, Zhang K, Yu N, Wang J. Pharmaceuticals Removal by Novel Nanoscale Photocatalyst Bi4VO8Cl: Influencing Factors, Kinetics, and Mechanism. Ind Eng Chem Res 2014. [DOI: 10.1021/ie501855r] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
| | | | | | - Ning Yu
- Environmental Protection and Monitoring Station of Xinxiang, Xinxiang, Henan 453003, P. R. China
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105
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Gadipelly C, Pérez-González A, Yadav GD, Ortiz I, Ibáñez R, Rathod VK, Marathe KV. Pharmaceutical Industry Wastewater: Review of the Technologies for Water Treatment and Reuse. Ind Eng Chem Res 2014. [DOI: 10.1021/ie501210j] [Citation(s) in RCA: 441] [Impact Index Per Article: 44.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Chandrakanth Gadipelly
- Department
of Chemical Engineering, Institute of Chemical Technology, Mumbai 400 019, India
| | - Antía Pérez-González
- Department
of Chemical and Biomolecular Engineering, University of Cantabria, Cantabria 39005, Spain
| | - Ganapati D. Yadav
- Department
of Chemical Engineering, Institute of Chemical Technology, Mumbai 400 019, India
| | - Inmaculada Ortiz
- Department
of Chemical and Biomolecular Engineering, University of Cantabria, Cantabria 39005, Spain
| | - Raquel Ibáñez
- Department
of Chemical and Biomolecular Engineering, University of Cantabria, Cantabria 39005, Spain
| | - Virendra K. Rathod
- Department
of Chemical Engineering, Institute of Chemical Technology, Mumbai 400 019, India
| | - Kumudini V. Marathe
- Department
of Chemical Engineering, Institute of Chemical Technology, Mumbai 400 019, India
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106
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Maalaoui A, Hajsalem A, Ratel-Ramond N, Akriche S. Synthesis, Characterization and Antibacterial Activity of a Novel Photoluminescent Nb-Substituted Lindqvist Polyoxotungstate Based Organic Cation. J CLUST SCI 2014. [DOI: 10.1007/s10876-014-0749-6] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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107
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Hoseini M, Safari GH, Kamani H, Jaafari J, Ghanbarain M, Mahvi AH. Sonocatalytic degradation of tetracycline antibiotic in aqueous solution by sonocatalysis. TOXICOLOGICAL AND ENVIRONMENTAL CHEMISTRY 2014. [DOI: 10.1080/02772248.2014.901328] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/07/2022]
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108
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Brinzila CI, Monteiro N, Pacheco MJ, Ciríaco L, Siminiceanu I, Lopes A. Degradation of tetracycline at a boron-doped diamond anode: influence of initial pH, applied current intensity and electrolyte. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2014; 21:8457-8465. [PMID: 24664638 DOI: 10.1007/s11356-014-2778-y] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/19/2014] [Accepted: 03/10/2014] [Indexed: 06/03/2023]
Abstract
The anodic oxidation of tetracycline was performed in an up-flow reactor, operating in batch mode with recirculation, using as anode a boron-doped diamond electrode. The influence on the degradation rate of solution initial pH (2 to 12), applied current intensity (25 to 300 A m(-2)) and type of electrolyte (sodium sulphate or sodium chloride) were investigated. For the assays run at equal current density, with sodium sulphate as electrolyte, the solution's initial pH of 2 presented the highest absorbance and chemical oxygen demand removals. Regarding the influence of current density, for equal charge passed, the organic load removal rate decreased with the increase in applied current. When sodium sulphate was used as an electrolyte, high-performance liquid chromatography (HPLC) results have shown an almost complete removal of tetracycline after a 2-h assay. HPLC results have also shown the presence of oxamic acid as one of the intermediates of tetracycline anodic oxidation. The complete removal of tetracycline was much faster in the presence of chloride ions that promoted the complete degradation of this antibiotic in 30 min. However, in the presence of chloride ions, the tetracycline mineralization is slower, as observed by the lower organic carbon removal rate when compared to that of the tetracycline degradation in the presence of sulphate.
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Affiliation(s)
- C I Brinzila
- UMTP and Department of Chemistry, University of Beira Interior, 6200-001, Covilhã, Portugal
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109
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Zhang G, Guan W, Shen H, Zhang X, Fan W, Lu C, Bai H, Xiao L, Gu W, Shi W. Organic Additives-Free Hydrothermal Synthesis and Visible-Light-Driven Photodegradation of Tetracycline of WO3 Nanosheets. Ind Eng Chem Res 2014. [DOI: 10.1021/ie4036687] [Citation(s) in RCA: 74] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Gehong Zhang
- School of Chemistry and Chemical Engineering, Jiangsu University, Xuefu Road 301, Zhenjiang, Jiangsu 212013, P. R. China
- School of Environmental Science and Engineering, Chang’an University, Yanta Road 126, Xi’an, Shaanxi 710054, P. R. China
| | - Weisheng Guan
- School of Environmental Science and Engineering, Chang’an University, Yanta Road 126, Xi’an, Shaanxi 710054, P. R. China
| | - Hao Shen
- Jiangsu Dragon Photoelectric Technology Co., LTD, Zhenjiang, Jiangsu 212000, P. R. China
| | - Xian Zhang
- State Key Laboratory of Environmental Chemistry and Ecotoxicology,
Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing, 100085, P. R. China
| | - Weiqiang Fan
- School of Chemistry and Chemical Engineering, Jiangsu University, Xuefu Road 301, Zhenjiang, Jiangsu 212013, P. R. China
| | - Changyu Lu
- School of Environmental Science and Engineering, Chang’an University, Yanta Road 126, Xi’an, Shaanxi 710054, P. R. China
| | - Hongye Bai
- School of Chemistry and Chemical Engineering, Jiangsu University, Xuefu Road 301, Zhenjiang, Jiangsu 212013, P. R. China
| | - Lisong Xiao
- School of Chemistry and Chemical Engineering, Jiangsu University, Xuefu Road 301, Zhenjiang, Jiangsu 212013, P. R. China
| | - Wei Gu
- School of Chemistry and Chemical Engineering, Jiangsu University, Xuefu Road 301, Zhenjiang, Jiangsu 212013, P. R. China
| | - Weidong Shi
- School of Chemistry and Chemical Engineering, Jiangsu University, Xuefu Road 301, Zhenjiang, Jiangsu 212013, P. R. China
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110
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Borghi AA, Palma MSA. Tetracycline: production, waste treatment and environmental impact assessment. BRAZ J PHARM SCI 2014. [DOI: 10.1590/s1984-82502011000100003] [Citation(s) in RCA: 91] [Impact Index Per Article: 9.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/03/2023] Open
Abstract
The frequent occurrence of pharmaceuticals in the aquatic environment requires an assessment of their environmental impact and their negative effects in humans. Among the drugs with high harmful potential to the environment are the antibiotics that reach the environment not only, as may be expected, through the effluents from chemical and pharmaceutical industries, but mainly through the sewage and livestock; because around 25 to 75% of the ingested drugs are excreted in unchanged form after the passage through the Gastro-Intestinal Tract. Tetracycline has high world consumption, representing a human consumption of about 23 kg/day in Brazil in 2007. At the moment, researches are being made to develop new tetracycline that incorporate heavy metals (Hg, Cd, Re, Pt, Pd) to their structures in order to increase their bactericidal effect. The conventional wastewater treatment plants are not able to degrade complex organic molecules to reduce their toxicity and improve their biodegradability. For this reason new technologies, i.e., the advanced oxidation processes, are being developed to handle this demand. The objectives of this study are to review the literature on the processes of obtaining tetracycline, presenting its waste treatment methods and evaluation of their environmental impact.
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111
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Malkhasian AYS, Izadifard M, Achari G, Langford CH. Photocatalytic degradation of agricultural antibiotics using a UV-LED light source. JOURNAL OF ENVIRONMENTAL SCIENCE AND HEALTH. PART. B, PESTICIDES, FOOD CONTAMINANTS, AND AGRICULTURAL WASTES 2014; 49:35-40. [PMID: 24138466 DOI: 10.1080/03601234.2013.836871] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/02/2023]
Abstract
With a view to developing a UV-LED photocatalytic reactor for small and remote water systems, the degradation of three representative agriculturally produced contaminants, two antibiotics and an endocrine disruptor hormone, was evaluated in a bench 365 nm LED photoreactor using a slurry of the well-known Degussa P25® (TiO2) as photocatalyst. Use of an additional electron capture additives O2 and H2O2 was also assessed. Loss of the parent organic compounds was tracked by HPLC or UV absorbance and mineralization, where feasible, was studied with TOC analysis with conventional instrumentation. In all cases, degradation is significant with moderate light dose. Lab data suggest log reduction with light delivery less than 2.2 kWhr per cubic meter light delivery.
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112
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Sarkar S, Das R, Choi H, Bhattacharjee C. Involvement of process parameters and various modes of application of TiO2 nanoparticles in heterogeneous photocatalysis of pharmaceutical wastes – a short review. RSC Adv 2014. [DOI: 10.1039/c4ra09582k] [Citation(s) in RCA: 56] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
In recent years, the occurrence of persistent organic compounds in industrial as well as municipal effluents is becoming a serious threat to the environment. The detrimental effects can be minimized with the help of photocatalysis.
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Affiliation(s)
- Santanu Sarkar
- Department of Chemical Engineering
- Jadavpur University
- Kolkata, India
| | - Ranjana Das
- Department of Chemical Engineering
- Jadavpur University
- Kolkata, India
| | - Heechul Choi
- School of Environmental Science and Engineering
- Gwangju Institute of Science and Technology
- Gwangju, Korea
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113
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Liu X, Zhou M, Yao G, Shi W, Ma C, Lv P, Tang Y, Yan Y. Hydrothermal synthesis and enhanced visible-light photocatalytic activity of octahedral Bi2WO6 modified with CdSe quantum dots. RSC Adv 2014. [DOI: 10.1039/c3ra46590j] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
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114
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Li P, Liu C, Wu G, Heng Y, Lin S, Ren A, Lv K, Xiao L, Shi W. Solvothermal synthesis and visible light-driven photocatalytic degradation for tetracycline of Fe-doped SrTiO3. RSC Adv 2014. [DOI: 10.1039/c4ra06630h] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
In this paper, Fe-doped SrTiO3 (FSTO) photocatalysts were successfully prepared via a facile solvothermal method, and their photocatalytic activities for degrading tetracycline (TC) under visible light irradiation were examined.
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Affiliation(s)
- Ping Li
- School of Chemistry and Chemical Engineering
- Jiangsu University
- Zhenjiang, P. R. China
| | - Chunbo Liu
- School of Chemistry and Chemical Engineering
- Jiangsu University
- Zhenjiang, P. R. China
| | - Guoling Wu
- School of Chemistry and Chemical Engineering
- Jiangsu University
- Zhenjiang, P. R. China
| | - Yang Heng
- School of Hydraulic
- Energy and Power Engineering
- Yangzhou University
- Yangzhou, P. R. China
| | - Shuang Lin
- School of Chemistry and Chemical Engineering
- Jiangsu University
- Zhenjiang, P. R. China
| | - Ao Ren
- School of Chemistry and Chemical Engineering
- Jiangsu University
- Zhenjiang, P. R. China
| | - Kehan Lv
- School of Petrochemical Engineering
- Changzhou University
- Changzhou, P. R. China
| | - Lisong Xiao
- School of Chemistry and Chemical Engineering
- Jiangsu University
- Zhenjiang, P. R. China
| | - Weidong Shi
- School of Chemistry and Chemical Engineering
- Jiangsu University
- Zhenjiang, P. R. China
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115
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Niu J, Ding S, Zhang L, Zhao J, Feng C. Visible-light-mediated Sr-Bi2O3 photocatalysis of tetracycline: kinetics, mechanisms and toxicity assessment. CHEMOSPHERE 2013; 93:1-8. [PMID: 23706401 DOI: 10.1016/j.chemosphere.2013.04.043] [Citation(s) in RCA: 58] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/03/2013] [Revised: 03/17/2013] [Accepted: 04/17/2013] [Indexed: 06/02/2023]
Abstract
Photodegradation of tetracycline (TC) was investigated in aqueous solution by visible-light-driven photocatalyst Sr-doped β-Bi2O3 (Sr-Bi2O3) prepared via solvothermal synthesis. The decomposition of TC by Sr-Bi2O3 under visible light (λ>420nm) irradiation followed pseudo-first-order kinetics, and the removal ratio reached 91.2% after 120min of irradiation. Sr-Bi2O3 photocatalysis is able to break the naphthol ring of TC which decomposes to m-cresol via dislodging hydroxyl group step by step by photogenerated electron. This mechanism was verified by electron spin resonance measurement, the addition of radical scavengers and the intermediate product analysis, indicating that the photogenerated electron acts as a reductant and can be the key to the degradation process. In contrast, in TiO2 photocatalysis the naphthol ring is broken via oxidation by hydroxyl radical, while in direct photolysis the ring remains intact. In addition, the toxicity of photodegradation products was analyzed by bioluminescence inhibition. After 120min of irradiation by Sr-Bi2O3, the toxicity decreases by 90.6%, which is more substantial than direct photolysis (70%) and TiO2 photocatalysis (80%), indicating that the Sr-Bi2O3 photocatalysis is more eco-friendly than the other two methods.
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Affiliation(s)
- Junfeng Niu
- State Key Laboratory of Water Environment Simulation, School of Environment, Beijing Normal University, Beijing 100875, PR China.
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116
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Yamal-Turbay E, Jaén E, Graells M, Pérez-Moya M. Enhanced photo-Fenton process for tetracycline degradation using efficient hydrogen peroxide dosage. J Photochem Photobiol A Chem 2013. [DOI: 10.1016/j.jphotochem.2013.05.008] [Citation(s) in RCA: 36] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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117
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Javid A, Nasseri S, Mesdaghinia A, Mahvi AH, Alimohammadi M, Aghdam RM, Rastkari N. Performance of photocatalytic oxidation of tetracycline in aqueous solution by TiO2 nanofibers. JOURNAL OF ENVIRONMENTAL HEALTH SCIENCE AND ENGINEERING 2013; 11:24. [PMID: 24499711 PMCID: PMC4176313 DOI: 10.1186/2052-336x-11-24] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/11/2013] [Accepted: 06/03/2013] [Indexed: 12/07/2022]
Abstract
The presence of pharmaceutical compounds in water and soil has become an environmental concern. The aim of this study was to evaluate the performance of TiO2 nanofiber in the oxidation of the antibiotic tetracycline. TiO2 nanofiber was fabricated by electro-spinning method, and then was calcined at 560°C for 2 h. Central composite design (CCD) statistic model was used to optimize tetracycline concentration, time and pH for TiO2 catalyst. A tubular Pyrex glass reactor with diameter of 15 cm and height of 30 cm was designed and a 125W Philips HPLN lamp (UV, λ > 254 nm) was used as light source. Samples were measured by high-performance liquid chromatography (HPLC). Equation of model suggests a direct relationship between pH and time with efficiency of tetracycline removal. The observations indicated that time is the most significant (scaled estimate = + 28.04) parameter in efficiency of tetracycline removal. The application of response surface methodology yielded the equation of Y = 65.82 + 5.74 pH + 28.04 time + (−3.07)(pH)2 + (−6.6)(time)2, with R2 = 0.986 which represents good reliability of model. Based on the response surface plots optimum conditions for degradation of tetracycline with maximum efficiency of around 95% was attained. These conditions are as follow; concentration: 50 mg/l, pH= 8.3, time= 15 min.
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Affiliation(s)
| | - Simin Nasseri
- Department of Environmental Health Engineering, School of Public Health, Tehran University of Medical Sciences, Tehran, Iran.
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118
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Kanakaraju D, Glass BD, Oelgemöller M. Heterogeneous Photocatalysis for Pharmaceutical Wastewater Treatment. ACTA ACUST UNITED AC 2013. [DOI: 10.1007/978-94-007-6836-9_3] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/18/2023]
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119
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Daghrir R, Drogui P, Robert D. Modified TiO2 For Environmental Photocatalytic Applications: A Review. Ind Eng Chem Res 2013. [DOI: 10.1021/ie303468t] [Citation(s) in RCA: 1129] [Impact Index Per Article: 102.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Affiliation(s)
- Rimeh Daghrir
- Institut National de la Recherche
Scientifique (INRS-ETE), Université du Québec, 490 rue de la Couronne, Quebec City, Quebec, Canada G1K 9A9
| | - Patrick Drogui
- Institut National de la Recherche
Scientifique (INRS-ETE), Université du Québec, 490 rue de la Couronne, Quebec City, Quebec, Canada G1K 9A9
| | - Didier Robert
- Antenne de Saint-Avold du Laboratoire
des Matériaux, Surfaces et Procédés pour la Catalyse
(LMSPC) CNRS-UMR7515, Université de Lorraine, 12 rue Victor Demange 57500 Saint-Avold, France
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120
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Rodrigues-Silva C, Maniero MG, Rath S, Guimarães JR. Degradation of flumequine by the Fenton and photo-Fenton processes: evaluation of residual antimicrobial activity. THE SCIENCE OF THE TOTAL ENVIRONMENT 2013; 445-446:337-346. [PMID: 23354374 DOI: 10.1016/j.scitotenv.2012.12.079] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/07/2012] [Revised: 12/21/2012] [Accepted: 12/21/2012] [Indexed: 06/01/2023]
Abstract
Flumequine is a broad-spectrum antimicrobial agent of the quinolone class, and it is widely used as a veterinary drug in food-producing animals. The presence of flumequine in the environment may contribute to the development of drug resistant bacterial strains. In this study, water samples fortified with flumequine (500 μg L(-1)) were degraded using the Fenton and photo-Fenton processes. The maximum degradation efficiency for flumequine by the Fenton process was approximately 40% (0.5 mmol L(-1) Fe(II), 2.0 mmol L(-1) H(2)O(2) and 15 min). By applying UV radiation (photo-Fenton process), the efficiency reached more than 94% in 60 min when 0.25 mmol L(-1) Fe(II) and 10.0 mmol L(-1) H(2)O(2) were used. Under these conditions, the Fenton process was able to reduce the biological activity, whereas the photo-Fenton process eliminated almost all of the antimicrobial activity because it was not detected. Four byproducts with an m/z of 244, 238, 220 and 202 were identified by mass spectrometry, and a degradation pathway for flumequine was proposed. The byproducts were derived from decarboxylation and defluorination reactions and from modifications in the alkylamino chain of the fluoroquinolone.
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Affiliation(s)
- Caio Rodrigues-Silva
- School of Civil Engineering, Architecture and Urbanism, University of Campinas - UNICAMP, P.O. Box 6021, CEP 13083-852, Campinas, SP, Brazil
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121
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Photoelectrocatalytic bleaching of p-nitrosodimethylaniline using Ti/TiO2 nanostructured electrodes deposited by means of a pulsed laser deposition process. J APPL ELECTROCHEM 2013. [DOI: 10.1007/s10800-013-0531-8] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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122
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Jo WK. Photocatalytic Oxidation of Low-Level Airborne 2-Propanol and Trichloroethylene over Titania Irradiated with Bulb-Type Light-Emitting Diodes. MATERIALS 2013; 6:265-278. [PMID: 28809307 PMCID: PMC5452117 DOI: 10.3390/ma6010265] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/23/2012] [Revised: 12/26/2012] [Accepted: 01/15/2013] [Indexed: 11/24/2022]
Abstract
This study examined the photocatalytic oxidation of gas-phase trichloroethylene (TCE) and 2-propanol, at indoor levels, over titanium dioxide (TiO2) irradiated with light-emitting diodes (LED) under different operational conditions. TiO2 powder baked at 450 °C exhibited the highest photocatalytic decomposition efficiency (PDE) for TCE, while all photocatalysts baked at different temperatures showed similar PDEs for 2-propanol. The average PDEs of TCE over a three hour period were four, four, five, and 51% for TiO2 powders baked at 150, 250, 350, and 450 °C, respectively. The average PDEs of 2-propanol were 95, 97, 98, and 96% for TiO2 powders baked at 150, 250, 350, and 450 °C, respectively. The ratio of anatase at 2θ = 25.2° to rutile at 2θ = 27.4° was lowest for the TiO2 powder baked at 450 °C. Although the LED-irradiated TiO2 system revealed lower PDEs of TCE and 2-propanol when compared to those of the eight watt, black-light lamp-irradiated TiO2 system, the results for the PDEs normalized to the energy consumption were reversed. Other operational parameters, such as relative humidity, input concentrations, flow rate, and feeding type were also found to influence the photocatalytic performance of the UV LED-irradiated TiO2 system when applied to the cleaning of TCE and 2-propanol at indoor air levels.
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Affiliation(s)
- Wan-Kuen Jo
- Department of Environmental Engineering, Kyungpook National University, Daegu, 702-701, South Korea.
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123
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Avisar D, Horovitz I, Lozzi L, Ruggieri F, Baker M, Abel ML, Mamane H. Impact of water quality on removal of carbamazepine in natural waters by N-doped TiO2 photo-catalytic thin film surfaces. JOURNAL OF HAZARDOUS MATERIALS 2013; 244-245:463-71. [PMID: 23141378 DOI: 10.1016/j.jhazmat.2012.09.058] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/19/2012] [Revised: 09/24/2012] [Accepted: 09/25/2012] [Indexed: 05/11/2023]
Abstract
Photocatalytic experiments on the pharmaceutical pollutant carbamazepine (CBZ) were conducted using sol-gel nitrogen-doped TiO(2)-coated glass slides under a solar simulator. CBZ was stable to photodegradation under direct solar irradiation. No CBZ sorption to the catalyst surface was observed, as further confirmed by surface characterization using X-ray photoelectron spectroscopic analysis of N-doped TiO(2) surfaces. When exposing the catalyst surface to natural organic matter (NOM), an excess amount of carbon was detected relative to controls, which is consistent with NOM remaining on the catalyst surface. The catalyst surface charge was negative at pH values from 4 to 10 and decreased with increasing pH, correlated with enhanced CBZ removal with increasing medium pH in the range of 5-9. A dissolved organic carbon concentration of 5mg/L resulted in ~20% reduction in CBZ removal, probably due to competitive inhibition of the photocatalytic degradation of CBZ. At alkalinity values corresponding to CaCO(3) addition at 100mg/L, an over 40% decrease in CBZ removal was observed. A 35% reduction in CBZ occurred in the presence of surface water compared to complete suppression of the photocatalytic process in wastewater effluent.
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Affiliation(s)
- Dror Avisar
- The Hydro-Chemistry Laboratory, Faculty of Geography and the Environment, Tel Aviv University, Tel Aviv 69978, Israel.
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124
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Removal of Pharmaceuticals from Environmentally Relevant Matrices by Advanced Oxidation Processes (AOPs). ANALYSIS, REMOVAL, EFFECTS AND RISK OF PHARMACEUTICALS IN THE WATER CYCLE - OCCURRENCE AND TRANSFORMATION IN THE ENVIRONMENT 2013. [DOI: 10.1016/b978-0-444-62657-8.00011-2] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
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125
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Daghrir R, Drogui P, El Khakani M. Photoelectrocatalytic oxidation of chlortetracycline using Ti/TiO2 photo-anode with simultaneous H2O2 production. Electrochim Acta 2013. [DOI: 10.1016/j.electacta.2012.09.020] [Citation(s) in RCA: 82] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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126
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Abstract
AbstractPharmaceutical compounds have been detected in the environment and potentially arise from the discharge of excreted and improperly disposed medication from sewage treatment facilities. In order to minimize environmental exposure of pharmaceutical residues, a potential technique to remove pharmaceuticals from water is the use of an advanced oxidation process (AOP) involving titanium dioxide (TiO2) photocatalysis. To evaluate the extent UV/TiO2 processes have been studied for pharmaceutical degradation, a literature search using the keywords ‘titanium dioxide’, ‘photocatalysis’, ‘advanced oxidation processes’, ‘pharmaceuticals’ and ‘degradation’ were used in the ISI Web of Knowledge TM, Scopus TM and ScienceDirect TM databases up to and including articles published on 23 November 2011. The degradation rates of pharmaceuticals under UV/TiO2 treatment were dependent on type and amount of TiO2 loading, pharmaceutical concentration, the presence of electron acceptors and pH. Complete mineralization under particular experimental conditions were reported for some pharmaceuticals; however, some experiments reported evolution of toxic intermediates during the photocatalytic process. It is concluded that the UV/TiO2 system is potentially a feasible wastewater treatment process, but careful consideration of the treatment time, the loading and the type of TiO2 (doped vs. undoped) used for a particular pharmaceutical is necessary for a successful application (198 words).
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127
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Wu J, Zhang H, Oturan N, Wang Y, Chen L, Oturan MA. Application of response surface methodology to the removal of the antibiotic tetracycline by electrochemical process using carbon-felt cathode and DSA (Ti/RuO2-IrO2) anode. CHEMOSPHERE 2012; 87:614-620. [PMID: 22342334 DOI: 10.1016/j.chemosphere.2012.01.036] [Citation(s) in RCA: 91] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/31/2011] [Revised: 01/20/2012] [Accepted: 01/20/2012] [Indexed: 05/31/2023]
Abstract
The removal of antibiotic tetracycline (TC) from water by electrochemical advanced oxidation process (EAOP) was performed using a carbon-felt cathode and a DSA (Ti/RuO(2)-IrO(2)) anode. The influence of applied current, initial pH and initial TC concentration on TC removal efficiency was investigated. Response surface methodology (RSM) based on Box-Behnken statistical experiment design (BBD) was applied to analyze the experimental variables. The positive and negative effects of variables and the interaction between variables on TC removal efficiency were determined. The applied current showed positive effect, while the initial pH value and initial tetracycline concentration gave negative effect on TC removal. The interaction between applied current and initial pH value was significant, while the interactions of initial TC concentration with applied current or initial pH were not pronounced. The results of adequacy check confirmed that the proposed models were accurate and reliable to analyze the variables of EAOP. The reaction intermediates were identified by high-performance liquid chromatography-mass spectrometry (LC-MS) technique and a plausible degradation pathway for tetracycline degradation was proposed. The acute toxicity experiments illustrated that the Daphnia magna immobilization rate reached the maximum after 240 min of electrolysis and then decreased with the progress of the reaction.
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Affiliation(s)
- Jie Wu
- Department of Environmental Engineering, Wuhan University, Wuhan 430079, China
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128
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Singh AK, Singh M, Rahmani S, Srivastava J, Singh J. Kinetics of the Oxidation of Tetracycline Hydrate by Copper(II) Complexed with Bipyridyl in Alkaline Medium Using Chloro-Complex of Palladium(II) As Homogeneous Catalyst. Ind Eng Chem Res 2012. [DOI: 10.1021/ie300306a] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Ashok Kumar Singh
- Department
of Chemistry, University of Allahabad, Allahabad 211002, India
| | - Manjula Singh
- Department
of Chemistry, University of Allahabad, Allahabad 211002, India
| | - Shahla Rahmani
- Department
of Chemistry, University of Allahabad, Allahabad 211002, India
| | - Jaya Srivastava
- Department
of Chemistry, University of Allahabad, Allahabad 211002, India
| | - Jagdamba Singh
- Department
of Chemistry, University of Allahabad, Allahabad 211002, India
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129
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Liu C, Fu D, Li H. Behaviour of multi-component mixtures of tetracyclines when degraded by photoelectrocatalytic and electrocatalytic technologies. ENVIRONMENTAL TECHNOLOGY 2012; 33:791-799. [PMID: 22720402 DOI: 10.1080/09593330.2011.595828] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/01/2023]
Abstract
The main objective of this work was to study and contrast the degradation behaviour of multi-component mixtures of tetracyclines (TCs) during processes of the photoelectrocatalysis (PEC) and electrocatalysis (EC). During these two processes, we investigated the degradation efficiency of TCs under different influence factors and their reaction mechanisms and degradation kinetics, and the degradation difference ofTC, oxytetracycline (OTC) and chlortetracycline (CTC). The results indicate that applied bias potentials, pH and reaction atmosphere greatly influenced the degradation of TCs. Under different pH conditions, the degradation efficiency of TC and OTC changed little, but that of CTC varied greatly. This difference may stem from the halogen group (-Cl) that CTC carries. Under given conditions, PEC generated greater photocurrent, and the degradation efficiency during the PEC process was higher by about 10% at 180 min. The manners in which HO* radicals were generated during the PEC and EC processes were also compared. TCs degradation in the two processes accorded well with the first-order reaction kinetics equation at lower bias potentials, whereas at a higher bias potential of2 V, both reactions deviated from the equation, and their fitting curves were closer to parabolic.
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Affiliation(s)
- Cuiyun Liu
- Department of Municipal Engineering, School of Civil Engineering, Southeast University, Nanjing, China
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130
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Maroga Mboula V, Héquet V, Gru Y, Colin R, Andrès Y. Assessment of the efficiency of photocatalysis on tetracycline biodegradation. JOURNAL OF HAZARDOUS MATERIALS 2012; 209-210:355-364. [PMID: 22316687 DOI: 10.1016/j.jhazmat.2012.01.032] [Citation(s) in RCA: 62] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/14/2011] [Revised: 01/09/2012] [Accepted: 01/10/2012] [Indexed: 05/31/2023]
Abstract
The use of photocatalysis to improve the biodegradability of an antibiotic compound, tetracycline (TC) was investigated. The toxicity of TC and its degradation products were also examined. The Sturm test was conducted to assess the biodegradability of by-products formed in the photocatalytic process. The toxicity of tetracycline and its by-products was evaluated using a dehydrogenase inhibition test, which showed a decrease in toxicity during photocatalysis. However, the Sturm test results indicated that, like tetracycline, the by-products are not biodegradable. Possible structures of these by-products were determined using liquid chromatography-electrospray ionization-tandem mass spectrometry (LC-ESI-MS/MS). It was found that, during the photocatalytic process, the TC aromatic ring is not opened and the structure of the identified by-products is quite similar to that of tetracycline. A reaction pathway is proposed.
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Affiliation(s)
- V Maroga Mboula
- LUNAM Université, Ecole des Mines de Nantes, CNRS, GEPEA, UMR 6144, 4 rue Alfred Kastler, 44307 Nantes cedex 03, France.
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131
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Hao R, Xiao X, Zuo X, Nan J, Zhang W. Efficient adsorption and visible-light photocatalytic degradation of tetracycline hydrochloride using mesoporous BiOI microspheres. JOURNAL OF HAZARDOUS MATERIALS 2012; 209-210:137-45. [PMID: 22277340 DOI: 10.1016/j.jhazmat.2012.01.006] [Citation(s) in RCA: 193] [Impact Index Per Article: 16.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/10/2011] [Revised: 11/24/2011] [Accepted: 01/01/2012] [Indexed: 05/24/2023]
Abstract
A novel microsphere-like BiOI hierarchical material was successfully synthesized by a one-step solution method at room temperature using polyvinylpyrrolidone (PVP) as structure directing reagent, its morphology, structure, surface area, photoabsorption were characterized, and the removal of tetracycline hydrochloride (TC) was evaluated under dark adsorption and visible light irradiation. It was shown that the BiOI microspheres formed in the precursor solution with PVP exhibit a mesoporous surface layer, 28.1m(2)g(-1) surface area, 1.91 eV band gap energy (E(g) value), and twofold removal ability to tetracycline hydrochloride (TC), i.e. adsorptive separation and visible light photocatalytic degradation. The adsorption process of TC on BiOI microspheres can be described by pseudo-second-order kinetics model and both Freundlich and Langmuir equations well described the adsorption isotherm but the former is better. More importantly, the BiOI microspheres exhibit an excellent photocatalytic degradation and mineralization capability to TC under visible light irradiation, which comes from its electronic band structure, high surface area and high surface-to-volume ratio. In addition, the BiOI microspheres are stable during the reaction and can be used repeatedly, showing promising prospect for the treatment of TCs in future industrial application.
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Affiliation(s)
- Rong Hao
- School of Chemistry and Environment, South China Normal University, Guangzhou 510006, PR China
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132
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Daghrir R, Drogui P, Ka I, El Khakani MA. Photoelectrocatalytic degradation of chlortetracycline using Ti/TiO2 nanostructured electrodes deposited by means of a Pulsed Laser Deposition process. JOURNAL OF HAZARDOUS MATERIALS 2012; 199-200:15-24. [PMID: 22104083 DOI: 10.1016/j.jhazmat.2011.10.022] [Citation(s) in RCA: 33] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/16/2011] [Revised: 09/03/2011] [Accepted: 10/06/2011] [Indexed: 05/12/2023]
Abstract
Ti/TiO(2) electrode was prepared by means of the Pulsed Laser Deposition method and used in a photoelectrocatalytic oxidation (PECO) process in order to degrade chlortetracycline (CTC). The deposited TiO(2) coatings were found to be of rutile structure. High treatment efficiency of CTC was achieved by the PECO process compared to the conventional electrochemical oxidation, direct photolysis and photocatalysis processes. Several factors such as current intensity, treatment time, UV lamp position and initial concentration of CTC were investigated. Using a 2(4) factorial matrix, the best performance for CTC degradation (74.3% of removal) was obtained at a current intensity of 0.5A during 120 min of treatment time and when the UV lamp was immersed in the solution in the presence of 25 mg L(-1) of CTC. The current intensity and treatment time were the main parameters influencing the degradation rate of CTC. Subsequently, a central composite design methodology has been investigated to determine the optimal experimental parameters for CTC degradation. The PECO process applied under optimal conditions (at current intensity of 0.39 A during 120 min with internal position of the UV lamp) is able to oxidize around 74.2 ± 0.57%, of CTC.
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Affiliation(s)
- Rimeh Daghrir
- Institut national de la recherche scientifique, Centre Eau, Terre et Environnement, 490 rue de la Couronne, Québec, Qc, Canada.
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133
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Fourcade F, Yahiat S, Elandaloussi K, Brosillon S, Amrane A. Relevance of Photocatalysis prior to Biological Treatment of Organic Pollutants - Selection Criteria. Chem Eng Technol 2012. [DOI: 10.1002/ceat.201100396] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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134
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Wang Y, Zhang H, Chen L, Wang S, Zhang D. Ozonation combined with ultrasound for the degradation of tetracycline in a rectangular air-lift reactor. Sep Purif Technol 2012. [DOI: 10.1016/j.seppur.2011.06.035] [Citation(s) in RCA: 76] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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135
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Belkheiri D, Fourcade F, Geneste F, Floner D, Aït-Amar H, Amrane A. Feasibility of an electrochemical pre-treatment prior to a biological treatment for tetracycline removal. Sep Purif Technol 2011. [DOI: 10.1016/j.seppur.2011.09.029] [Citation(s) in RCA: 45] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
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136
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Homem V, Santos L. Degradation and removal methods of antibiotics from aqueous matrices--a review. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2011; 92:2304-47. [PMID: 21680081 DOI: 10.1016/j.jenvman.2011.05.023] [Citation(s) in RCA: 624] [Impact Index Per Article: 48.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/01/2010] [Revised: 05/02/2011] [Accepted: 05/18/2011] [Indexed: 05/06/2023]
Abstract
Over the past few years, antibiotics have been considered emerging pollutants due to their continuous input and persistence in the aquatic ecosystem even at low concentrations. They have been detected worldwide in environmental matrices, indicating their ineffective removal from water and wastewater using conventional treatment methods. To prevent this contamination, several processes to degrade/remove antibiotics have been studied. This review addresses the current state of knowledge concerning the input sources, occurrence and mainly the degradation and removal processes applied to a specific class of micropollutants, the antibiotics. In this paper, different remediation techniques were evaluated and compared, such as conventional techniques (biological processes, filtration, coagulation, flocculation and sedimentation), advanced oxidation processes (AOPs), adsorption, membrane processes and combined methods. In this study, it was found that ozonation, Fenton/photo-Fenton and semiconductor photocatalysis were the most tested methodologies. Combined processes seem to be the best solution for the treatment of effluents containing antibiotics, especially those using renewable energy and by-products materials.
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Affiliation(s)
- Vera Homem
- LEPÆ, Departamento de Engenharia Química, Faculdade de Engenharia da Universidade do Porto, Rua Dr, Roberto Frias, 4200-465 Porto, Portugal
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137
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Oller I, Malato S, Sánchez-Pérez JA. Combination of Advanced Oxidation Processes and biological treatments for wastewater decontamination--a review. THE SCIENCE OF THE TOTAL ENVIRONMENT 2011; 409:4141-66. [PMID: 20956012 DOI: 10.1016/j.scitotenv.2010.08.061] [Citation(s) in RCA: 966] [Impact Index Per Article: 74.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/05/2010] [Revised: 08/12/2010] [Accepted: 08/30/2010] [Indexed: 05/22/2023]
Abstract
Nowadays there is a continuously increasing worldwide concern for development of alternative water reuse technologies, mainly focused on agriculture and industry. In this context, Advanced Oxidation Processes (AOPs) are considered a highly competitive water treatment technology for the removal of those organic pollutants not treatable by conventional techniques due to their high chemical stability and/or low biodegradability. Although chemical oxidation for complete mineralization is usually expensive, its combination with a biological treatment is widely reported to reduce operating costs. This paper reviews recent research combining AOPs (as a pre-treatment or post-treatment stage) and bioremediation technologies for the decontamination of a wide range of synthetic and real industrial wastewater. Special emphasis is also placed on recent studies and large-scale combination schemes developed in Mediterranean countries for non-biodegradable wastewater treatment and reuse. The main conclusions arrived at from the overall assessment of the literature are that more work needs to be done on degradation kinetics and reactor modeling of the combined process, and also dynamics of the initial attack on primary contaminants and intermediate species generation. Furthermore, better economic models must be developed to estimate how the cost of this combined process varies with specific industrial wastewater characteristics, the overall decontamination efficiency and the relative cost of the AOP versus biological treatment.
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Affiliation(s)
- I Oller
- Plataforma Solar de Almería (CIEMAT), Carretera Senés, Km 4. 04200 Tabernas, Almería, Spain.
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138
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Brigante M, Schulz PC. Remotion of the antibiotic tetracycline by titania and titania-silica composed materials. JOURNAL OF HAZARDOUS MATERIALS 2011; 192:1597-608. [PMID: 21782336 DOI: 10.1016/j.jhazmat.2011.06.082] [Citation(s) in RCA: 36] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/30/2011] [Accepted: 06/28/2011] [Indexed: 05/13/2023]
Abstract
Removal of the antibiotic tetracycline (TC) by TiO(2) and the mesoporous binary system TiO(2)-SiO(2) have been studied in batch experiments by performing adsorption isotherms/kinetics and photodegradation kinetics under different conditions of pH, supporting electrolyte concentration, temperature, adsorbent amount, and TiO(2)-loading. On the one hand, the adsorption of TC on the studied materials is strongly dependent on pH, increasing as pH decreases. The adsorption mechanism, controlled by diffusion processes, is strongly related to electrostatic attractions and H-bond formations mainly between amide, carbonylic and phenolic groups of the antibiotic and the functional groups of TiO(2). The adsorption capacity at constant pH increases in the order TiO(2)<TiO(2)-SiO(2) mainly due to the highly surface area that the silica offers and to the homogenously dispersion of the TiO(2) nanocrystallites. On the other hand, the photodegradation rate is affected by the presence of the studied materials at several pH, although its photocatalytic activities are more important at pH 7 or lower. The photodegradation mechanisms seem to be related to the formation of OH radicals which are responsible for the decomposition of TC. The composed titania-silica materials might act not only as an excellent adsorbent but also act as an alternative photocatalyst for pollution control.
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Affiliation(s)
- Maximiliano Brigante
- INQUISUR, Departamento de Química, Universidad Nacional del Sur, Av. Alem 1253, 8000 Bahía Blanca, Argentina.
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139
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Abstract
AbstractThe photocatalytic abatement of hazardous pharmaceuticals has been investigated at very low concentration in the ppb range as found in wastewater and in environmental pollutants. Photocatalytic degradation of tetracycline as a model compound with titania catalysts has been studied using solarium UV-A and black light with differentially applied electric power, tetracycline and catalyst concentration. Abatement of up to 90% has been achieved after 1 hour. Adsorption of tetracycline and photochemical degradation contribute significantly to the abatement of tetracycline resulting in an immediate reduction during the initial period of treatment. Contribution of adsorption is high at very low concentration (500 ppb). Photocatalytic treatment with titania is even highly efficient in the abatement of very small concentrations of tetracycline in drinking water.
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140
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Khan MH, Bae H, Jung JY. Tetracycline degradation by ozonation in the aqueous phase: proposed degradation intermediates and pathway. JOURNAL OF HAZARDOUS MATERIALS 2010; 181:659-65. [PMID: 20557998 DOI: 10.1016/j.jhazmat.2010.05.063] [Citation(s) in RCA: 147] [Impact Index Per Article: 10.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/14/2009] [Revised: 05/11/2010] [Accepted: 05/15/2010] [Indexed: 05/15/2023]
Abstract
During the ozonation of tetracycline (TC) in aqueous media at pHs 2.2 and 7.0, the effects of pH variations, protonation and dissociation of functional groups and variation in free radical exposure were investigated to elucidate the transformation pathway. Liquid chromatography-triple quadrupole mass spectrometry detected around 15 ozonation products, and uncovered their production and subsequent degradation patterns. During ozonation at pH 2.2, the TC degradation pathway was proposed on the basis of the structure, ozonation chemistry and mass spectrometry data of TC. Ozonation of TC at the C11a-C12 and C2-C3 double bonds, aromatic ring and amino group generated products of m/z 461, 477, 509 and 416, respectively. Further ozonation at the above mentioned sites gave products of m/z 432, 480, 448, 525 and 496. The removal of TOC reached a maximum of approximately 40% after 2 h of ozonation, while TC was completely removed within 4-6 min at both pHs. The low TOC removal efficiency might be due to the generation of recalcitrant products and the low ozone supply for high TC concentration. Ozonation decreased the acute toxicity of TC faster at pH 7.0 than pH 2.2, but the maximum decrease was only about 40% at both pHs after 2 h of ozonation. In this study, attempts were made to understand the correlation between the transformation products, pathway, acute toxicity and quantity of residual organics in solution. Overall, ozonation was found to be a promising process for removing TC and the products initially generated.
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Affiliation(s)
- M Hammad Khan
- Water Environment Center, Korea Institute of Science and Technology, Seoul, Republic of Korea
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141
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Magureanu M, Piroi D, Mandache NB, David V, Medvedovici A, Parvulescu VI. Degradation of pharmaceutical compound pentoxifylline in water by non-thermal plasma treatment. WATER RESEARCH 2010; 44:3445-3453. [PMID: 20398913 DOI: 10.1016/j.watres.2010.03.020] [Citation(s) in RCA: 47] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/18/2009] [Revised: 03/17/2010] [Accepted: 03/20/2010] [Indexed: 05/29/2023]
Abstract
The decomposition of a model pharmaceutical compound, pentoxifylline, in aqueous solution was investigated using a dielectric barrier discharge (DBD) in coaxial configuration, operated in pulsed regime, at atmospheric pressure and room temperature. The solution was made to flow as a film over the surface of the inner electrode of the plasma reactor, so the discharge was generated at the gas-liquid interface. Oxygen was introduced with a flow rate of 600sccm. After 60min plasma treatment 92.5% removal of pentoxifylline was achieved and the corresponding decomposition yield was 16g/kWh. It was found that pentoxifylline degradation depended on the initial concentration of the compound, being faster for lower concentrations. Faster decomposition of pentoxifylline could be also achieved by increasing the pulse repetition rate, and implicitly the power introduced in the discharge, however, this had little effect on the decomposition yield. The degradation products were investigated by liquid chromatography-mass spectrometry technique (LC-MS). The evolution of the intermediates during plasma treatment showed a fast increase in the first 30min, followed by a slower decrease, so that these products are almost completely removed after 120min treatment time.
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Affiliation(s)
- Monica Magureanu
- National Institute for Lasers, Plasma and Radiation Physics, Atomistilor Str. 409, POB MG 36, 077125 Bucharest-Magurele, Romania.
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142
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Rozas O, Contreras D, Mondaca MA, Pérez-Moya M, Mansilla HD. Experimental design of Fenton and photo-Fenton reactions for the treatment of ampicillin solutions. JOURNAL OF HAZARDOUS MATERIALS 2010; 177:1025-1030. [PMID: 20097473 DOI: 10.1016/j.jhazmat.2010.01.023] [Citation(s) in RCA: 41] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/19/2009] [Revised: 01/05/2010] [Accepted: 01/06/2010] [Indexed: 05/28/2023]
Abstract
This paper discusses the degradation of the antibiotic ampicillin (AMP) by Fenton and photo-Fenton reactions. The influence of the three main variables that govern the degradation kinetic (pH, H(2)O(2) and Fe(II) concentrations) was evaluated with a circumscribed central composite (CCC) model and a response surface methodology (RSM). The optimal conditions for Fenton and photo-Fenton reactions are very similar: pH 3.5, around 400 micromol L(-1) H(2)O(2) and 87 micromol L(-1) Fe(II). Under such optimized conditions, the complete AMP removal was reached after 10 min and 3 min for Fenton and photo-Fenton reactions, respectively. A very similar removal profile in the first 2 min of reaction was observed for both systems with a high degree of degradation (close to 90%). After a 2-min treatment, the Fenton reaction became slower, and the IR product analysis suggests the formation of different oxidation intermediates. This observation was confirmed by the COD and TOC evolution during the reactions. The oxidation degree, measured as Average Oxidation State (AOS), indicates that the photo-Fenton reaction produces faster most of the oxidation intermediates. The antibacterial activity (AA) of the oxidized samples was determined using the inhibition halo methodology on agar plates cultured with Staphylococcus aureus bacteria. The course of AA is concomitant with the AMP removal, which indicates that the long-term intermediates do not present antibiotic properties.
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Affiliation(s)
- Oscar Rozas
- Facultad de Ciencias Químicas, Universidad de Concepción, Casilla 160-C, Concepción, Chile
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143
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Cho JY. Evaluation of degradation of antibiotic tetracycline in pig manure by electron beam irradiation. BULLETIN OF ENVIRONMENTAL CONTAMINATION AND TOXICOLOGY 2010; 84:450-453. [PMID: 20237909 DOI: 10.1007/s00128-010-9967-2] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/30/2009] [Accepted: 03/05/2010] [Indexed: 05/28/2023]
Abstract
This study was carried out to evaluate the degradation efficiency and intermediate products of the tetracycline from artificially contaminated pig manure using of electron beam irradiation as a function of the absorbed dose. The degradation efficiency of tetracycline was 42.77% at 1 kGy, 64.20% at 3 kGy, 77.83% at 5 kGy, and 90.50% at 10 kGy. The initial concentration of tetracycline (300 mg kg(-1)) in pig manure decreased significantly to 24.2 +/- 5.3 mg kg(-1) after electron beam irradiation at 10 kGy. The radiolytic degradation products of tetracycline were 1,4-benzenedicarboxylic acid, hexadecanoic acid, 9-octadecenamide, 11-octadecenamide, and octadecanoic acid.
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Affiliation(s)
- Jae-Young Cho
- Department of Bio-Environmental Chemistry, Chonbuk National University, Jeonju 561-756, Korea.
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144
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Wang Y, Liang JB, Liao XD, Wang LS, Loh TC, Dai J, Ho YW. Photodegradation of Sulfadiazine by Goethite−Oxalate Suspension under UV Light Irradiation. Ind Eng Chem Res 2010. [DOI: 10.1021/ie9014974] [Citation(s) in RCA: 52] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Yan Wang
- Institute of Bioscience and Department of Animal Science, Universiti Putra Malaysia, 43400 Serdang, Selangor, Malaysia, Guangdong Institute of Eco-Environmental and Soil Sciences, Guangzhou 510650, P.R. China, Key Laboratory of Ecological Agriculture of Ministry of Agriculture of the People’s Republic of China, and College of Nature Resources and Environment, South China Agriculture University, Guangzhou 510640, P.R. China
| | - Juan Boo Liang
- Institute of Bioscience and Department of Animal Science, Universiti Putra Malaysia, 43400 Serdang, Selangor, Malaysia, Guangdong Institute of Eco-Environmental and Soil Sciences, Guangzhou 510650, P.R. China, Key Laboratory of Ecological Agriculture of Ministry of Agriculture of the People’s Republic of China, and College of Nature Resources and Environment, South China Agriculture University, Guangzhou 510640, P.R. China
| | - Xin Di Liao
- Institute of Bioscience and Department of Animal Science, Universiti Putra Malaysia, 43400 Serdang, Selangor, Malaysia, Guangdong Institute of Eco-Environmental and Soil Sciences, Guangzhou 510650, P.R. China, Key Laboratory of Ecological Agriculture of Ministry of Agriculture of the People’s Republic of China, and College of Nature Resources and Environment, South China Agriculture University, Guangzhou 510640, P.R. China
| | - Lu-song Wang
- Institute of Bioscience and Department of Animal Science, Universiti Putra Malaysia, 43400 Serdang, Selangor, Malaysia, Guangdong Institute of Eco-Environmental and Soil Sciences, Guangzhou 510650, P.R. China, Key Laboratory of Ecological Agriculture of Ministry of Agriculture of the People’s Republic of China, and College of Nature Resources and Environment, South China Agriculture University, Guangzhou 510640, P.R. China
| | - Teck Chwen Loh
- Institute of Bioscience and Department of Animal Science, Universiti Putra Malaysia, 43400 Serdang, Selangor, Malaysia, Guangdong Institute of Eco-Environmental and Soil Sciences, Guangzhou 510650, P.R. China, Key Laboratory of Ecological Agriculture of Ministry of Agriculture of the People’s Republic of China, and College of Nature Resources and Environment, South China Agriculture University, Guangzhou 510640, P.R. China
| | - Jun Dai
- Institute of Bioscience and Department of Animal Science, Universiti Putra Malaysia, 43400 Serdang, Selangor, Malaysia, Guangdong Institute of Eco-Environmental and Soil Sciences, Guangzhou 510650, P.R. China, Key Laboratory of Ecological Agriculture of Ministry of Agriculture of the People’s Republic of China, and College of Nature Resources and Environment, South China Agriculture University, Guangzhou 510640, P.R. China
| | - Yin Wan Ho
- Institute of Bioscience and Department of Animal Science, Universiti Putra Malaysia, 43400 Serdang, Selangor, Malaysia, Guangdong Institute of Eco-Environmental and Soil Sciences, Guangzhou 510650, P.R. China, Key Laboratory of Ecological Agriculture of Ministry of Agriculture of the People’s Republic of China, and College of Nature Resources and Environment, South China Agriculture University, Guangzhou 510640, P.R. China
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145
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Zou Z, Liu Y, Li H, Liao Y, Xie C. Synthesis of TiO2/WO3/MnO2 Composites and High-Throughput Screening for Their Photoelectrical Properties. ACTA ACUST UNITED AC 2010; 12:363-9. [DOI: 10.1021/cc1000117] [Citation(s) in RCA: 35] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Zhijun Zou
- State Key Laboratory of Material Processing and Die & Mould Technology, Nanomaterial and Smart Sensor Research Laboratory, Department of Materials Science and Engineering, Huazhong University of Science and Technology, Wuhan 430074, PR China
| | - Yuan Liu
- State Key Laboratory of Material Processing and Die & Mould Technology, Nanomaterial and Smart Sensor Research Laboratory, Department of Materials Science and Engineering, Huazhong University of Science and Technology, Wuhan 430074, PR China
| | - Huayao Li
- State Key Laboratory of Material Processing and Die & Mould Technology, Nanomaterial and Smart Sensor Research Laboratory, Department of Materials Science and Engineering, Huazhong University of Science and Technology, Wuhan 430074, PR China
| | - Yichuan Liao
- State Key Laboratory of Material Processing and Die & Mould Technology, Nanomaterial and Smart Sensor Research Laboratory, Department of Materials Science and Engineering, Huazhong University of Science and Technology, Wuhan 430074, PR China
| | - Changsheng Xie
- State Key Laboratory of Material Processing and Die & Mould Technology, Nanomaterial and Smart Sensor Research Laboratory, Department of Materials Science and Engineering, Huazhong University of Science and Technology, Wuhan 430074, PR China
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146
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Jeong J, Song W, Cooper WJ, Jung J, Greaves J. Degradation of tetracycline antibiotics: Mechanisms and kinetic studies for advanced oxidation/reduction processes. CHEMOSPHERE 2010; 78:533-540. [PMID: 20022625 DOI: 10.1016/j.chemosphere.2009.11.024] [Citation(s) in RCA: 200] [Impact Index Per Article: 14.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/28/2009] [Revised: 11/16/2009] [Accepted: 11/16/2009] [Indexed: 05/26/2023]
Abstract
This study involves elucidating the destruction mechanisms of four tetracyclines via reactions with ()OH and solvated electrons (e(aq)(-)). The first step is to evaluate the bimolecular rate constants for the reaction of ()OH and e(aq)(-). Transient absorption spectra for the intermediates formed by the reaction of ()OH were also measured over the time period of 1-250micros to assist in selecting the appropriate wavelength for the absolute bimolecular reaction rate constants. For these four compounds, tetracycline, chlortetracycline, oxytetracycline, and doxycycline, the absolute rate constants with ()OH were (6.3+/-0.1)x10(9), (5.2+/-0.2)x10(9), (5.6+/-0.1)x10(9), and (7.6+/-0.1)x10(9) M(-1) s(-1), and for e(aq)(-) were (2.2+/-0.1)x10(10), (1.3+/-0.2)x10(10), (2.3+/-0.1)x10(10), and (2.5+/-0.1)x10(10) M(-1) s(-1), respectively. The efficiencies for ()OH reaction with the four tetracyclines ranged from 32% to 60%. The efficiencies for e(aq)(-) reaction were 15-29% except for chlortetracycline which was significantly higher (97%) than the other tetracyclines in spite of the similar reaction rate constants for e(aq)(-) in all cases. To evaluate the use of advanced oxidation/reduction processes for the destruction of tetracyclines it is necessary to have reaction rates, reaction efficiencies and destruction mechanisms. This paper is the first step in eventually realizing the formulation of a detailed kinetic destruction model for these four tetracycline antibiotics.
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Affiliation(s)
- Joonseon Jeong
- Urban Water Research Center, Department of Civil and Environmental Engineering, University of California, Irvine, 92697-2175, United States
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147
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Prado N, Ochoa J, Amrane A. Biodegradation by activated sludge and toxicity of tetracycline into a semi-industrial membrane bioreactor. BIORESOURCE TECHNOLOGY 2009; 100:3769-3774. [PMID: 19162474 DOI: 10.1016/j.biortech.2008.11.039] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/28/2008] [Revised: 11/03/2008] [Accepted: 11/18/2008] [Indexed: 05/27/2023]
Abstract
Much attention has been devoted recently to the fate of pharmaceutically active compounds such as tetracycline antibiotics in soil and water. Tetracycline (TC) biodegradability by activated sludge derived from membrane bioreactor (MBR) treating swine wastewater via CO(2)-evolution was evaluated by means of modified Sturm test, which was also used to evaluate its toxicity on carbon degradation. The impact of tetracycline on a semi-industrial MBR process was also examined and confronted to lab-scale experiments. After tetracycline injection in the pilot, no disturbance was detected on the elimination of organic matters and ammonium (nitrification), reaching after injection 88% and 99% respectively; only denitrification was slightly affected. Confirming the ruggedness and the superiority of membrane bioreactors over conventional bioreactors, no toxicity was observed at the considered level of TC in the pilot (20 mg TOC L(-1)), while at lab-scale sodium benzoate biodegradation was completely inhibited from 10 mg TOC L(-1) TC. The origin of the activated sludge showed a significant impact on the performances, since the ultimate biodegradation was in the range -50% to -53% for TC concentrations in the range 10-20 mg TOC L(-1) with conventional bioreactor sludge and increased to 18% for 40 mg TOC L(-1) of TC with activated sludge derived from the MBR pilot. This confirmed the higher resistance of activated sludge arising from membrane bioreactor.
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Affiliation(s)
- Nolwenn Prado
- Sciences Chimiques de Rennes, UMR 6226 CNRS- ENSCR, Avenue du Général Leclerc, 35 700 RENNES, France.
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148
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Palominos RA, Mondaca MA, Giraldo A, Peñuela G, Pérez-Moya M, Mansilla HD. Photocatalytic oxidation of the antibiotic tetracycline on TiO2 and ZnO suspensions. Catal Today 2009. [DOI: 10.1016/j.cattod.2008.12.031] [Citation(s) in RCA: 269] [Impact Index Per Article: 17.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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149
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Zhang H, Liu F, Wu X, Zhang J, Zhang D. Degradation of tetracycline in aqueous medium by electrochemical method. ASIA-PAC J CHEM ENG 2009. [DOI: 10.1002/apj.286] [Citation(s) in RCA: 62] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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150
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Benotti MJ, Stanford BD, Wert EC, Snyder SA. Evaluation of a photocatalytic reactor membrane pilot system for the removal of pharmaceuticals and endocrine disrupting compounds from water. WATER RESEARCH 2009; 43:1513-22. [PMID: 19269667 DOI: 10.1016/j.watres.2008.12.049] [Citation(s) in RCA: 126] [Impact Index Per Article: 8.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/18/2008] [Revised: 10/10/2008] [Accepted: 12/16/2008] [Indexed: 05/18/2023]
Abstract
A photocatalytic reactor membrane pilot system, employing UV/TiO(2) photocatalysis, was evaluated for its ability to remove thirty-two pharmaceuticals, endocrine disrupting compounds, and estrogenic activity from water. Concentrations of all compounds decreased following treatment, and removal followed pseudo-first-order kinetics as a function of the amount of treatment. Twenty-nine of the targeted compounds in addition to total estrogenic activity were greater than 70% removed while only three compounds were less than 50% removed following the highest level of treatment (4.24 kW h/m(3)). No estrogenically active transformation products were formed during treatment. Additionally, the unit was operated in photolytic mode (UV only) and photolytic plus H(2)O(2) mode (UV/H(2)O(2)) to determine the relative amount of energy required. Based on the electrical energy per order (EEO), the unit achieved the greatest efficiency when operated in photolytic plus H(2)O(2) mode for the conditions tested.
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Affiliation(s)
- Mark J Benotti
- Southern Nevada Water Authority, P.O. Box 99954, Las Vegas, NV 89193-9954, United States.
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