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Kyere-Yeboah K, Qiao XC. Non-thermal plasma activated peroxide and percarbonate for tetracycline and oxytetracycline degradation: Synergistic performance, degradation pathways, and toxicity evaluation. CHEMOSPHERE 2023; 336:139246. [PMID: 37330069 DOI: 10.1016/j.chemosphere.2023.139246] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/06/2023] [Revised: 05/30/2023] [Accepted: 06/15/2023] [Indexed: 06/19/2023]
Abstract
Tetracycline (TC) and Oxytetracycline (OTC) are common antibiotics increasingly detected in the environment, posing a potential risk to human and aquatic lives. Although conventional methods such as adsorption and photocatalysis are used for the degradation of TC and OTC, they are inefficient in removal efficiency, energy yield, and toxic byproduct generation. Herein, a falling-film dielectric barrier discharge (DBD) reactor coupled with environmentally friendly oxidants (hydrogen peroxide (HPO), sodium percarbonate (SPC), and HPO + SPC) was applied, and the treatment efficiency of TC and OTC was investigated. Experimental results showed that moderate addition of the HPO and SPC exhibited a synergistic effect (SF > 2), significantly improving the antibiotic removal ratio, total organic removal ratio (TOC), and energy yield by more than 50%, 52%, and 180%, respectively. After 10 min of DBD treatment, the introduction of 0.2 mM SPC led to a 100% antibiotic removal ratio and a TOC removal of 53.4% and 61.2% for 200 mg/L TC and 200 mg/L OTC, respectively. Also, 1 mM HPO dosage led to 100% antibiotic removal ratios after 10 min of DBD treatment and a TOC removal of 62.4% and 71.9% for 200 mg/L TC and 200 mg/L OTC, respectively. However, the DBD + HPO + SPC treatment method had a detrimental effect on the performance of the DBD reactor. After 10 min of DBD plasma discharge, the removal ratios for TC and OTC were 80.8% and 84.1%, respectively, when 0.5 mM HPO +0.5 mM SPC was added. Moreover, principal component and hierarchical cluster analysis confirmed the differences between the treatment methods. Furthermore, the concentration of oxidant-induced in-situ generated ozone and hydrogen peroxide were quantitatively determined, and their indispensable roles during the degradation process were established via radical scavenger tests. Finally, the synergetic antibiotic degradation mechanisms and pathways were proposed, and the toxicities of the intermediate byproducts were evaluated.
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Affiliation(s)
- Kwasi Kyere-Yeboah
- School of Resources and Environmental Engineering, East China University of Science and Technology, Shanghai, 200237, China
| | - Xiu-Chen Qiao
- School of Resources and Environmental Engineering, East China University of Science and Technology, Shanghai, 200237, China.
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2
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Khan MA, Raza N, Manzoor S, Shuja R, Raza H, Khan MI, Azam M, Shanableh A. Experimental design by response surface methodology for efficient cefixime uptake from hospital effluents using anion exchange membrane. CHEMOSPHERE 2023; 311:137103. [PMID: 36347346 DOI: 10.1016/j.chemosphere.2022.137103] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/26/2022] [Revised: 10/13/2022] [Accepted: 10/30/2022] [Indexed: 06/16/2023]
Abstract
The excessive use of antibiotics and their ultimate routes to the environment have prompted the drug resistance, which is becoming a major ecological issue. In this work, we have evaluated the performance of quaternary ammonium poly (2, 6-dimethyl-1,4-phenylene oxide) and polyvinyl alcohol (QPPO/PVA) based anion exchange membrane against cefixime (a third generation cephalosporin antibiotic) present in hospital effluents. The membrane's surface morphology was studied through scanning electron microscopy. The optimization of experimental parameters through Response Surface Methodology helped to evaluate the inter parameter dependence and predict maximum uptake capacity (qe). The speculated value of qe (6.72 mg g-1) obtained through central composite design was close to the experimental value of 7.01 mg g-1 with percent relative error of 4.31%. Further, the evaluation of experimental data using isotherms (Langmuir and Freundlich) and kinetic models (pseudo-first-order and second-order) proposed that the interactions between cefixime and the membrane were physisorptive in nature. The intra-day and inter-day assays exhibited lower %RSD values of 0.4% (n = 5) and 0.3% (n = 5). Furthermore, a percentage recovery of 98.2% (n = 9) and limit of detection 1 × 10-5 μg mL-1 was observed. The chromatogram of the treated water samples presented only negligible amount of cefixime indicating a great potential of QPPO/PVA membrane for the removal of cefixime from real water samples. The membrane could be regenerated for three consecutive cycles without any prominent loss in efficiency.
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Affiliation(s)
- Muhammad Ali Khan
- Institute of Chemical Sciences, Bahauddin Zakariya University, Multan, Pakistan.
| | - Nadeem Raza
- Department of Chemistry, Govt. Alamdar Hussain Islamia Associate College, Multan, Pakistan.
| | - Suryyia Manzoor
- Institute of Chemical Sciences, Bahauddin Zakariya University, Multan, Pakistan.
| | - Ramsha Shuja
- Institute of Chemical Sciences, Bahauddin Zakariya University, Multan, Pakistan.
| | - Hina Raza
- Faculty of Pharmacy, Bahauddin Zakariya University, Multan, Pakistan.
| | - Muhammad Imran Khan
- Research Institute of Sciences and Engineering (RISE), University of Sharjah, Sharjah, 27272, United Arab Emirates.
| | - Mudassar Azam
- Institute of Chemical Engineering& Technology, University of the Punjab, Lahore, Pakistan.
| | - Abdallah Shanableh
- Research Institute of Sciences and Engineering (RISE), University of Sharjah, Sharjah, 27272, United Arab Emirates.
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3
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Shu X, Bi H, Wang J, Yang J, Wang J, Liu G, Su B. Highly stable and efficient calcined γ-Al 2O 3 catalysts loaded with MnO x-CeO x for the ozonation of oxytetracycline. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2022; 29:80399-80410. [PMID: 35715680 DOI: 10.1007/s11356-022-21355-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/10/2022] [Accepted: 06/04/2022] [Indexed: 06/15/2023]
Abstract
Catalytic ozonation with supported metal oxides is a promising strategy for addressing refractory pollutants in wastewater. In this study, γ-Al2O3 supported MnOx-CeOx catalysts (MC1, MC2, and MC3) obtained at different calcination temperatures (400 °C, 550 °C, and 700 °C) were applied as effective catalysts for ozonation and explored the feasibility of the treatment of oxytetracycline (OTC) wastewater. Comparatively, the MC2 possessed the highest molar ratios of Mn3+/Mn4+ (1.60) and Ce3+/Ce4+ (0.96), the largest surface area (273.8 m2 g-1) with a petal-shaped structure, and most abundant surface hydroxyls (3.78 mmol g-1). These physicochemical characteristics benefited the surface reaction and resulted in the acceleration of ozone decomposition, electron transfer, and •OH generation, thereby improving the catalyst's adsorption ability and catalytic activity. The combination with MC2 increased the OTC and COD removal of the ozonation process from 59.1% and 29.0% to 94.7% and 83.3% in 25 min, respectively. By employing electron paramagnetic resonance (EPR) and radical quenching experiments, it was verified that •OH species generation promoted the mineralization of OTC. The possible degradation pathways of OTC were investigated through mass spectrometry, and the route consisted of dehydration, deamination, and demethylation. Moreover, during a 12-day continuous experiment, MC2 catalyst exhibited excellent reusability and catalytic stability, with COD removal efficiencies above 80%.
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Affiliation(s)
- Xinpeng Shu
- College of Chemical Engineering, Beijing University of Chemical Technology, Beijing, 100029, China
| | - Huaqi Bi
- College of Chemical Engineering, Beijing University of Chemical Technology, Beijing, 100029, China
| | - Jun Wang
- College of Chemical Engineering, Beijing University of Chemical Technology, Beijing, 100029, China
| | - Jiaxin Yang
- College of Chemical Engineering, Beijing University of Chemical Technology, Beijing, 100029, China
| | - Jue Wang
- Third Highway Engineering CO., LTD, China Communications Construction CO., LTD, Beijing, 100000, China
| | - Guangqing Liu
- College of Chemical Engineering, Beijing University of Chemical Technology, Beijing, 100029, China
| | - Bensheng Su
- College of Chemical Engineering, Beijing University of Chemical Technology, Beijing, 100029, China.
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4
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Zheng T, Wei C, Chen H, Xu J, Wu Y, Xing X. Fabrication of PbO 2 Electrodes with Different Doses of Er Doping for Sulfonamides Degradation. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2022; 19:ijerph192013503. [PMID: 36294088 PMCID: PMC9602837 DOI: 10.3390/ijerph192013503] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/24/2022] [Revised: 10/08/2022] [Accepted: 10/12/2022] [Indexed: 05/22/2023]
Abstract
In the present study, PbO2 electrodes, doped with different doses of Er (0%, 0.5%, 1%, 2%, and 4%), were fabricated and characterized. Surface morphology characterization by SEM-EDS and XRD showed that Er was successfully doped into the PbO2 catalyst layer and the particle size of Er-PbO2 was reduced significantly. Electrochemical oxidation of sulfamerazine (SMR) in the Er-PbO2 anode system obeyed te pseudo first-order kinetic model with the order of 2% Er-PbO2 > 4% Er-PbO2 > 1% Er-PbO2 > 0.5% Er-PbO2 > 0% PbO2. For 2% Er-PbO2, kSMR was 1.39 h-1, which was only 0.93 h-1 for 0% PbO2. Effects of different operational parameters on SMR degradation in 2% Er-PbO2 anode system were investigated, including the initial pH of the electrolyte and current density. Under the situation of an initial pH of 3, a current density of 30 mA·cm-2, a concentration of SMR 30 mg L-1, and 0.2 M Na2SO4 used as supporting electrolyte, SMR was totally removed in 3 h, and COD mineralization efficiency was achieved 71.3% after 6 h electrolysis. Furthermore, the degradation pathway of SMR was proposed as combining the active sites identification by density functional calculation (DFT) and intermediates detection by LC-MS. Results showed that Er-PbO2 has great potential for antibiotic wastewater treatment in practical applications.
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Affiliation(s)
| | | | | | | | - Yanhong Wu
- Correspondence: (Y.W.); (X.X.); Tel.: +86-10-68933621 (X.X.)
| | - Xuan Xing
- Correspondence: (Y.W.); (X.X.); Tel.: +86-10-68933621 (X.X.)
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5
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Jiang Y, Ran J, Mao K, Yang X, Zhong L, Yang C, Feng X, Zhang H. Recent progress in Fenton/Fenton-like reactions for the removal of antibiotics in aqueous environments. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2022; 236:113464. [PMID: 35395600 DOI: 10.1016/j.ecoenv.2022.113464] [Citation(s) in RCA: 16] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/15/2021] [Revised: 03/22/2022] [Accepted: 03/25/2022] [Indexed: 06/14/2023]
Abstract
The frequent use of antibiotics allows them to enter aqueous environments via wastewater, and many types of antibiotics accumulate in the environment due to difficult degradation, causing a threat to environmental health. It is crucial to adopt effective technical means to remove antibiotics in aqueous environments. The Fenton reaction, as an effective organic pollution treatment technology, is particularly suitable for the treatment of antibiotics, and at present, it is one of the most promising advanced oxidation technologies. Specifically, rapid Fenton oxidation, which features high removal efficiency, thorough reactions, negligible secondary pollution, etc., has led to many studies on using the Fenton reaction to degrade antibiotics. This paper summarizes recent progress on the removal of antibiotics in aqueous environments by Fenton and Fenton-like reactions. First, the applications of various Fenton and Fenton-like oxidation technologies to the removal of antibiotics are summarized; then, the advantages and disadvantages of these technologies are further summarized. Compared with Fenton oxidation, Fenton-like oxidations exhibit milder reaction conditions, wider application ranges, great reduction in economic costs, and great improved cycle times, in addition to simple and easy recycling of the catalyst. Finally, based on the above analysis, we discuss the potential for the removal of antibiotics under different application scenarios. This review will enable the selection of a suitable Fenton system to treat antibiotics according to practical conditions and will also aid the development of more advanced Fenton technologies for removing antibiotics and other organic pollutants.
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Affiliation(s)
- Yu Jiang
- College of Biological and Pharmaceutical Sciences, China Three Gorges University, Yichang 443002, China; State Key Laboratory of Environmental Geochemistry, Institute of Geochemistry, Chinese Academy of Sciences, Guiyang 550081, China
| | - Jiabing Ran
- College of Biological and Pharmaceutical Sciences, China Three Gorges University, Yichang 443002, China
| | - Kang Mao
- State Key Laboratory of Environmental Geochemistry, Institute of Geochemistry, Chinese Academy of Sciences, Guiyang 550081, China
| | - Xuefeng Yang
- State Key Laboratory of Environmental Geochemistry, Institute of Geochemistry, Chinese Academy of Sciences, Guiyang 550081, China
| | - Li Zhong
- Guizhou Institute of Prataculture, Guizhou Academy of Agricultural Sciences, Guiyang, Guizhou, 550006, China
| | - Changying Yang
- College of Biological and Pharmaceutical Sciences, China Three Gorges University, Yichang 443002, China.
| | - Xinbin Feng
- State Key Laboratory of Environmental Geochemistry, Institute of Geochemistry, Chinese Academy of Sciences, Guiyang 550081, China
| | - Hua Zhang
- State Key Laboratory of Environmental Geochemistry, Institute of Geochemistry, Chinese Academy of Sciences, Guiyang 550081, China.
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6
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Applications of Heterogeneous Photocatalysis to the Degradation of Oxytetracycline in Water: A Review. Molecules 2022; 27:molecules27092743. [PMID: 35566092 PMCID: PMC9105636 DOI: 10.3390/molecules27092743] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/04/2022] [Revised: 04/21/2022] [Accepted: 04/22/2022] [Indexed: 11/30/2022] Open
Abstract
Photocatalytic processes are being studied extensively as potential advanced wastewater treatments for the removal of pharmaceuticals, pesticides and other recalcitrant micropollutants from the effluents of conventional wastewater treatment plants (WWTPs). Oxytetracycline (OTC) is a widespread antibiotic which is frequently detected in surface water bodies as a recalcitrant and persistent micropollutant. This review provides an update on advances in heterogeneous photocatalysis for the degradation of OTC in water under UV light, sunlight and visible-light irradiation. Photocatalysts based on pure semiconducting oxides are rarely used, due to the problem of rapid recombination of electron–hole pairs. To overcome this issue, a good strategy could be the coupling of two different semiconducting compounds with different conduction and valence bands. Several methods are described to enhance the performances of catalysts, such as doping of the oxide with metal and/or non-metal elements, surface functionalization, composites and nano-heterojunction. Furthermore, a discussion on non-oxidic photocatalysts is briefly provided, focusing on the application of graphene-based nanocomposites for the effective treatment of OTC.
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7
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Multiple production of highly active particles for oxytetracycline degradation in a large volume strong ionization dielectric barrier discharge system: Performance and degradation pathways. Sep Purif Technol 2021. [DOI: 10.1016/j.seppur.2021.119103] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
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8
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Oxytetracycline Mineralization inside a UV/H2O2 System of Advanced Oxidation Processes: Inorganic By-Product. BULLETIN OF CHEMICAL REACTION ENGINEERING & CATALYSIS 2021. [DOI: 10.9767/bcrec.16.2.10308.302-309] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
Oxytetracycline (OTC) was widely used antibiotic in agricultural industry. However, most of them were secreted from the body and entered the water stream, due to low absorption. The occurrence of the antibiotics in water stream may led to serious health hazards. Hence, finding the effective method that capable to achieve total mineralization of antibiotic-contaminated wastewater, followed by the production of benign inorganic and organic by-product, was necessarily deemed. Photochemical degradation method, such as: UV/H2O2 system, was capable to achieve total mineralization of OTC at its optimized condition. In this paper, inorganic by-products of OTC mineralization inside a UV/H2O2 system at its optimum condition were analyzed. The presence of nitrate, ammonium, chloride ions, and chlorine were detected at the sample solution after mineralization. The presence of these inorganic by-product has proven that the experimental setup chosen was capable to achieve total mineralization. In addition, possible routes of the inorganic by-products detachment from the OTC’s structure, were also presented. Copyright © 2021 by Authors, Published by BCREC Group. This is an open access article under the CC BY-SA License (https://creativecommons.org/licenses/by-sa/4.0).
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9
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Zhang Y, Jiang W, Dong H, Hu X, Fang B, Gao G, Zhao R. Study on the Electrochemical Removal Mechanism of Oxytetracycline by a Ti/IrO 2-Ta 2O 5 Plate. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2021; 18:ijerph18041708. [PMID: 33578856 PMCID: PMC7916611 DOI: 10.3390/ijerph18041708] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/07/2020] [Revised: 02/02/2021] [Accepted: 02/06/2021] [Indexed: 11/16/2022]
Abstract
In this study, a Ti/IrO2-Ta2O5 anode was prepared by a hydrothermal method, and the prepared electrode was characterized by techniques such as scanning electron microscopy, X-ray diffraction, and electron dispersive spectroscopy. At the same time, the anode characteristics before and after electrochemical experiments were analyzed. The electrode gradation mechanism of oxytetracycline is discussed. In the whole experimental process, the range of electrolysis conditions was determined by single factor experiment, and then the optimal removal condition of oxytetracycline was determined by orthogonal experiments. The removal rate of oxytetracycline reached 99.02% after 20 min of electrolysis under the following optimal conditions: a current of 0.500 A, plate spacing of 2 cm, Na2SO4 electrolyte concentration of 4 g/L, and solution pH of 3. Additionally, the mechanism of oxytetracycline removal was explored, free radical scavenging experiments were performed, and the degradation mechanism was inferred based on the changes in the ultraviolet absorption of the oxytetracycline solution before and after electrolysis. Then, based on the liquid chromatography-mass spectrometry data, seven possible compounds and five possible removal pathways were proposed.
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10
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Checcucci A, Trevisi P, Luise D, Modesto M, Blasioli S, Braschi I, Mattarelli P. Exploring the Animal Waste Resistome: The Spread of Antimicrobial Resistance Genes Through the Use of Livestock Manure. Front Microbiol 2020; 11:1416. [PMID: 32793126 PMCID: PMC7387501 DOI: 10.3389/fmicb.2020.01416] [Citation(s) in RCA: 57] [Impact Index Per Article: 14.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/19/2020] [Accepted: 06/02/2020] [Indexed: 12/11/2022] Open
Abstract
Antibiotic resistance is a public health problem of growing concern. Animal manure application to soil is considered to be a main cause of the propagation and dissemination of antibiotic residues, antibiotic-resistant bacteria (ARB), and antibiotic resistance genes (ARGs) in the soil-water system. In recent decades, studies on the impact of antibiotic-contaminated manure on soil microbiomes have increased exponentially, in particular for taxonomical diversity and ARGs’ diffusion. Antibiotic resistance genes are often located on mobile genetic elements (MGEs). Horizontal transfer of MGEs toward a broad range of bacteria (pathogens and human commensals included) has been identified as the main cause for their persistence and dissemination. Chemical and bio-sanitizing treatments reduce the antibiotic load and ARB. Nevertheless, effects of these treatments on the persistence of resistance genes must be carefully considered. This review analyzed the most recent research on antibiotic and ARG environmental dissemination conveyed by livestock waste. Strategies to control ARG dissemination and antibiotic persistence were reviewed with the aim to identify methods for monitoring DNA transferability and environmental conditions promoting such diffusion.
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Affiliation(s)
- Alice Checcucci
- Department of Agricultural and Food Science, University of Bologna, Bologna, Italy
| | - Paolo Trevisi
- Department of Agricultural and Food Science, University of Bologna, Bologna, Italy
| | - Diana Luise
- Department of Agricultural and Food Science, University of Bologna, Bologna, Italy
| | - Monica Modesto
- Department of Agricultural and Food Science, University of Bologna, Bologna, Italy
| | - Sonia Blasioli
- Department of Agricultural and Food Science, University of Bologna, Bologna, Italy
| | - Ilaria Braschi
- Department of Agricultural and Food Science, University of Bologna, Bologna, Italy
| | - Paola Mattarelli
- Department of Agricultural and Food Science, University of Bologna, Bologna, Italy
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11
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Sun W, Sun Y, Shah KJ, Zheng H, Ma B. Electrochemical degradation of oxytetracycline by Ti-Sn-Sb/γ-Al 2O 3 three-dimensional electrodes. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2019; 241:22-31. [PMID: 30981140 DOI: 10.1016/j.jenvman.2019.03.128] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/26/2019] [Revised: 03/25/2019] [Accepted: 03/29/2019] [Indexed: 06/09/2023]
Abstract
In this work, Ti-Sn-Sb/γ-Al2O3 particle electrodes were prepared and employed for the degradation of oxytetracycline (OTC) by three-dimensional electrocatalytic technology. Factors associated with the preparation of Ti-Sn-Sb/γ-Al2O3 particle electrodes were investigated. The effects of initial concentration, conductivity, pH value, aeration intensity, current density, plate spacing, and particle electrode dosage on OTC removal were studied. The removal rate of OTC and total organic carbon were achieved approximately 92.0% and 41.0% under the optimal operating condition, respectively. In addition, Ti-Sn-Sb/γ-Al2O3 particle electrode was analyzed by Fourier Transform Infrared spectroscopy (FT-IR), scanning electron microscope (SEM), energy dispersive spectrum analysis (EDX), X-Ray Fluorescence Spectrometer (XRF), and X Ray Diffraction analysis (XRD), which indicated that a significant amount of TiO2, SnO2, and Sb2O3 were formed on the surface of Ti-Sn-Sb/γ-Al2O3 particle electrode. It was also observed that the primary function of Ti-Sn-Sb/γ-Al2O3 particle electrode in the three-dimensional electrode electrolysis process is the strong oxidizing function of ·OH for degrading OTC. Consequently, the analysis of degradation products of oxytetracycline (OTC) demonstrates. In addition, the results and conclusions of this study provide a methodological basis and engineering practice basis for removing the low concentration of antibiotics in water.
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Affiliation(s)
- Wenquan Sun
- College of Urban Construction, Nanjing Tech University, Nanjing, 211800, China
| | - Yongjun Sun
- College of Urban Construction, Nanjing Tech University, Nanjing, 211800, China.
| | - Kinjal J Shah
- Graduate Institute of Environmental Engineering, National Taiwan University, 71 Chou-Shan Road, Taipei City, 10673, Taiwan
| | - Huaili Zheng
- Key Laboratory of the Three Gorges Reservoir Region's Eco-Environment, State Ministry of Education, Chongqing University, Chongqing, 400045, China
| | - Biao Ma
- College of Urban Construction, Nanjing Tech University, Nanjing, 211800, China
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12
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Zhang T, Wang Q, Deng Y, Jiang R. Recovery of Phosphorus From Swine Manure by Ultrasound/H 2O 2 Digestion, Struvite Crystallization, and Ferric Oxide Hydrate/Biochar Adsorption. Front Chem 2018; 6:464. [PMID: 30349816 PMCID: PMC6187983 DOI: 10.3389/fchem.2018.00464] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2018] [Accepted: 09/14/2018] [Indexed: 12/31/2022] Open
Abstract
Swine manure is potentially harmful to the environment but is also a readily accessible local source of phosphorus (P) for agricultural use. Decreasing the environmental impact of swine manure and recovering P from swine manure have been a challenge for a long time. In this study, an integrated process involving ultrasound/H2O2 digestion, struvite crystallization, and ferric oxide hydrate (HFO)/biochar adsorption was used to recover P from swine manure. The ultrasound/H2O2 treatment effectively solubilized the swine manure and converted organic P and other sparingly soluble P species into soluble phosphate. The struvite crystallization process allowed 85% of the available P to be recovered at pH 10.0 using a Mg:P molar ratio of 1.4 and a stirring rate of 150 rpm. HFO was loaded onto biochar synthesized by pyrolyzing ground corncob. The mechanism through which P was adsorbed was investigated by X-ray photoelectron spectroscopy and Fourier transform infrared spectroscopy. The adsorption of P by the HFO/biochar followed pseudo-second-order kinetics and was primarily controlled by chemical processes. The maximum amounts of P adsorbed were 225.08–242.21 mg/g. Thermodynamic calculations indicated that the adsorption of P was endothermic and spontaneous and increased the degree of disorder in the overall system. P mass balance calculations indicated that 90.4% of the total P was recovered as struvite and P-saturated HFO/biochar.
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Affiliation(s)
- Tao Zhang
- Beijing Key Laboratory of Farmland Soil Pollution Prevention and Remediation, Key Laboratory of Plant-Soil Interactions of Ministry of Education, Biomass Engineering Center, College of Resources and Environmental Sciences, China Agricultural University, Beijing, China.,Institute for Agricultural Engineering, University of Hohenheim, Stuttgart, Germany
| | - Qiming Wang
- Beijing Key Laboratory of Farmland Soil Pollution Prevention and Remediation, Key Laboratory of Plant-Soil Interactions of Ministry of Education, Biomass Engineering Center, College of Resources and Environmental Sciences, China Agricultural University, Beijing, China
| | - Yaxin Deng
- Beijing Key Laboratory of Farmland Soil Pollution Prevention and Remediation, Key Laboratory of Plant-Soil Interactions of Ministry of Education, Biomass Engineering Center, College of Resources and Environmental Sciences, China Agricultural University, Beijing, China.,Illinois Sustainable Technology Center, University of Illinois Urbana-Champaign, Champaign, IL, United States
| | - Rongfeng Jiang
- Beijing Key Laboratory of Farmland Soil Pollution Prevention and Remediation, Key Laboratory of Plant-Soil Interactions of Ministry of Education, Biomass Engineering Center, College of Resources and Environmental Sciences, China Agricultural University, Beijing, China
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13
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Wan Z, Wang J. Fenton-like degradation of sulfamethazine using Fe 3O 4/Mn 3O 4 nanocomposite catalyst: kinetics and catalytic mechanism. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2017; 24:568-577. [PMID: 27738863 DOI: 10.1007/s11356-016-7768-9] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/02/2016] [Accepted: 09/22/2016] [Indexed: 06/06/2023]
Abstract
The kinetics and catalytic mechanism of sulfamethazine (SMT) degradation using Fe3O4/Mn3O4 nanocomposite as catalysts in heterogeneous Fenton-like process were investigated. The degradation process of SMT conformed to first-order kinetic model. The apparent activation energy (E a ) of the process was calculated to be 40.5 kJ/mol. The reusability and stability of the catalysts were evaluated based on the results of the successive batch experiments. The intermediates were identified and quantified by ion chromatography (IC), high-performance liquid chromatography (HPLC), and gas chromatography-mass spectrometry (GC-MS). The results suggested that the bonds of S-C, N-C, and S-N were broken mainly by ·OH attack to form the organic compounds, which were gradually decomposed into small-molecule organic acids, such as oxalic acid, propionic acid, and formic acid. The possible catalytic mechanism for SMT degradation was tentatively proposed.
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Affiliation(s)
- Zhong Wan
- Collaborative Innovation Center for Advanced Nuclear Energy Science Building, INEB, Tsinghua University, Beijing, 100084, People's Republic of China
| | - Jianlong Wang
- Collaborative Innovation Center for Advanced Nuclear Energy Science Building, INEB, Tsinghua University, Beijing, 100084, People's Republic of China.
- Beijing Key Laboratory of Radioactive Waste Treatment, Tsinghua University, Beijing, 100084, People's Republic of China.
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14
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Wang X, Pan H, Gu J, Qian X, Gao H, Qin Q. Effects of oxytetracycline on archaeal community, and tetracycline resistance genes in anaerobic co-digestion of pig manure and wheat straw. ENVIRONMENTAL TECHNOLOGY 2016; 37:3177-3185. [PMID: 27115735 DOI: 10.1080/09593330.2016.1181109] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
In this study, the effects of different concentrations of oxytetracycline (OTC) on biogas production, archaeal community structure, and the levels of tetracycline resistance genes (TRGs) were investigated in the anaerobic co-digestion products of pig manure and wheat straw. PCR denaturing gradient gel electrophoresis analysis and real-time quantitative polymerase chain reaction (RT-qPCR) (PCR) were used to detect the archaeal community structure and the levels of four TRGs: tet(M), tet(Q), tet(W), and tet(C). The results showed that anaerobic co-digestion with OTC at concentrations of 60, 100, and 140 mg/kg (dry weight of pig manure) reduced the cumulative biogas production levels by 9.9%, 10.4%, and 14.1%, respectively, compared with that produced by the control, which lacked the antibiotic. The addition of OTC substantially modified the structure of the archaeal community. Two orders were identified by phylogenetic analysis, that is, Pseudomonadales and Methanomicrobiales, and the methanogen present during anaerobic co-digestion with OTC may have been resistant to OTC. The abundances of tet(Q) and tet(W) genes increased as the OTC concentration increased, whereas the abundances of tet(M) and tet(C) genes decreased as the OTC concentration increased.
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Affiliation(s)
- Xiaojuan Wang
- a Agriculture Key Laboratory of Plant Nutrition and Agri-environment in Northwest China/College of Natural Resources and Environment, Northwest A&F University , Yangling , People's Republic of China
| | - Hongjia Pan
- a Agriculture Key Laboratory of Plant Nutrition and Agri-environment in Northwest China/College of Natural Resources and Environment, Northwest A&F University , Yangling , People's Republic of China
| | - Jie Gu
- a Agriculture Key Laboratory of Plant Nutrition and Agri-environment in Northwest China/College of Natural Resources and Environment, Northwest A&F University , Yangling , People's Republic of China
| | - Xun Qian
- a Agriculture Key Laboratory of Plant Nutrition and Agri-environment in Northwest China/College of Natural Resources and Environment, Northwest A&F University , Yangling , People's Republic of China
| | - Hua Gao
- a Agriculture Key Laboratory of Plant Nutrition and Agri-environment in Northwest China/College of Natural Resources and Environment, Northwest A&F University , Yangling , People's Republic of China
| | - Qingjun Qin
- a Agriculture Key Laboratory of Plant Nutrition and Agri-environment in Northwest China/College of Natural Resources and Environment, Northwest A&F University , Yangling , People's Republic of China
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15
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Fan HT, Shi LQ, Shen H, Chen X, Xie KP. Equilibrium, isotherm, kinetic and thermodynamic studies for removal of tetracycline antibiotics by adsorption onto hazelnut shell derived activated carbons from aqueous media. RSC Adv 2016. [DOI: 10.1039/c6ra23346e] [Citation(s) in RCA: 57] [Impact Index Per Article: 7.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Hazelnut shell, an agricultural waste, was used to prepare activated carbons by phosphoric acid activation.
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Affiliation(s)
- Hong-Tao Fan
- College of Applied Chemistry
- Shenyang University of Chemical Technology
- Shenyang
- China
| | - Li-Qi Shi
- College of Applied Chemistry
- Shenyang University of Chemical Technology
- Shenyang
- China
| | - Hua Shen
- College of Applied Chemistry
- Shenyang University of Chemical Technology
- Shenyang
- China
| | - Xi Chen
- School of Life Science
- Liaoning Normal University
- Dalian
- China
| | - Kun-Peng Xie
- School of Life Science
- Liaoning Normal University
- Dalian
- China
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16
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Ahmad M, Asghar A, Abdul Raman AA, Wan Daud WMA. Enhancement of Treatment Efficiency of Recalcitrant Wastewater Containing Textile Dyes Using a Newly Developed Iron Zeolite Socony Mobil-5 Heterogeneous Catalyst. PLoS One 2015; 10:e0141348. [PMID: 26517827 PMCID: PMC4627726 DOI: 10.1371/journal.pone.0141348] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/22/2015] [Accepted: 10/06/2015] [Indexed: 11/19/2022] Open
Abstract
Fenton oxidation, an advanced oxidation process, is an efficient method for the treatment of recalcitrant wastewaters. Unfortunately, it utilizes H2O2 and iron-based homogeneous catalysts, which lead to the formation of high volumes of sludge and secondary pollutants. To overcome these problems, an alternate option is the usage of heterogeneous catalyst. In this study, a heterogeneous catalyst was developed to provide an alternative solution for homogeneous Fenton oxidation. Iron Zeolite Socony Mobile-5 (Fe-ZSM-5) was synthesized using a new two-step process. Next, the catalyst was characterized by scanning electron microscopy, energy-dispersive X-ray spectroscopy, fourier transform infrared spectroscopy, and Brunauer-Emmett-Teller analysis and tested against a model wastewater containing the azo dye Acid Blue 113. Results showed that the loading of iron particles reduced the surface area of the catalyst from 293.59 to 243.93 m2/g; meanwhile, the average particle size of the loaded material was 12.29 nm. Furthermore, efficiency of the developed catalyst was evaluated by performing heterogeneous Fenton oxidation. Taguchi method was coupled with principal component analysis in order to assess and optimize mineralization efficiency. Experimental results showed that under optimized conditions, over 99.7% degradation and 77% mineralization was obtained, with a 90% reduction in the consumption of the developed catalyst. Furthermore, the developed catalyst was stable and reusable, with less than 2% leaching observed under optimized conditions. Thus, the present study proved that newly developed catalyst has enhanced the oxidation process and reduced the chemicals consumption.
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Affiliation(s)
- Mushtaq Ahmad
- Department of Chemical Engineering, Faculty of Engineering, University of Malaya, 50603, Kuala Lumpur, Malaysia
| | - Anam Asghar
- Department of Chemical Engineering, Faculty of Engineering, University of Malaya, 50603, Kuala Lumpur, Malaysia
| | - Abdul Aziz Abdul Raman
- Department of Chemical Engineering, Faculty of Engineering, University of Malaya, 50603, Kuala Lumpur, Malaysia
- * E-mail:
| | - Wan Mohd Ashri Wan Daud
- Department of Chemical Engineering, Faculty of Engineering, University of Malaya, 50603, Kuala Lumpur, Malaysia
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17
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Montes N, Otero M, Coimbra RN, Méndez R, Martín-Villacorta J. Removal of tetracyclines from swine manure at full-scale activated sludge treatment plants. ENVIRONMENTAL TECHNOLOGY 2015; 36:1966-1973. [PMID: 25672878 DOI: 10.1080/09593330.2015.1018338] [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] [Indexed: 06/04/2023]
Abstract
The purpose of this study was to investigate the fate of three tetracyclines (TCs), namely oxytetracycline (OTC), chlortetracycline (CTC) and doxycycline (DC) at two different full-scale swine manure-activated sludge treatment plants. Throughout treatment, OTC, CTC and DC were removed by 71-76%, 75-80% and 95%, respectively. Removal of these TCs under physical treatment was deniable. On the contrary, the flocculation-coagulation and the secondary clarification resulted in a relevant reduction of the concentration of these TCs.
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Affiliation(s)
- Nuria Montes
- a Department of Applied Chemistry and Physics, IMARENABIO , University of León , Campus de Vegazana, 24071 León , Spain
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18
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Dehghani S, Jonidi Jafari A, Farzadkia M, Gholami M. Sulfonamide antibiotic reduction in aquatic environment by application of fenton oxidation process. IRANIAN JOURNAL OF ENVIRONMENTAL HEALTH SCIENCE & ENGINEERING 2013; 10:29. [PMID: 23570238 PMCID: PMC3648445 DOI: 10.1186/1735-2746-10-29] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/19/2012] [Accepted: 02/24/2013] [Indexed: 11/10/2022]
Abstract
Presence of antibiotics in the environment may cause potential risk for aquatic environment and organisms. In this research, Fenton oxidation process was offered as an effective method for removal of antibiotic sulfamethoxazole from aqueous solutions. The experiments were performed on laboratory-scale study under complete mixing at 25±2°C. The effects of initial antibiotic concentration, molar ratio of H2O2/Fe+2, solution pH, concentration of H2O2, Fe+2 and reaction time was studied on the oxidation of sulfamethoxazole in three level. The results indicated that the optimal parameters for Fenton process were as follows: molar ratio of [H2O2]/[Fe+2] = 1.5, pH= 4.5, and contact time= 15 min. In this situation, the antibiotic removal and COD reduction were achieved 99.99% and 64.7-70.67%, respectively. Although, Fenton reaction could effectively degrade antibiotic sulfamethoxazole under optimum experimental conditions, however, the rate of mineralization was not completed. This process can be considered to eliminate other refractory antibiotics with similar structure or to increase their biodegradability.
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Affiliation(s)
- Somayyeh Dehghani
- Department of Environmental Health, Faculty of Medical Sciences, Tarbiat Modares University, Tehran, Iran.
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19
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Redox potential as a means to control the treatment of slurry to lower HS emissions. SENSORS 2012; 12:5349-62. [PMID: 22778588 PMCID: PMC3386687 DOI: 10.3390/s120505349] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/09/2012] [Revised: 04/10/2012] [Accepted: 04/10/2012] [Indexed: 11/25/2022]
Abstract
Slurry can be oxidized to eliminate undesirable emissions, including malodorous hydrogen sulfide (H2S). However, it is difficult to assess the optimal amount of oxidizing agent required. In this study, one cow and one pig manure, each in three particle size ranges were oxidized with 0–350 mg ozone/L manure. Redox and H2S concentration were measured continuously. During ozonation the manures gave equivalent redox potential curves. A relatively rapid rise in redox potential was observed within a range of −275 mV to −10 mV, with all manures changing as a minimum from −200 mV to −80 mV. The gaseous H2S emissions were decreased by 99.5% during the redox increase (−200 mV to −80 mV). This is attributed to H2S oxidation by ozone and oxygen, and is not due to H2S deprotonation or gas flushing. By identifying the initiation of the final redox level following the rise, the amount of ozone required to remove H2S from the manure samples was estimated to be in the range of 6–24 mg O3/L manure, depending on the type of manure. Hence, continuous monitoring of redox potential (termination of the redox rise) during the oxidation treatment is a simple method of achieving cost-effective minimization of H2S emissions from slurry.
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20
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Chi Z, Liu R, Yang H, Shen H, Wang J. Binding of tetracycline and chlortetracycline to the enzyme trypsin: spectroscopic and molecular modeling investigations. PLoS One 2011; 6:e28361. [PMID: 22205948 PMCID: PMC3242759 DOI: 10.1371/journal.pone.0028361] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2011] [Accepted: 11/07/2011] [Indexed: 11/29/2022] Open
Abstract
Tetracycline (TC) and chlortetracycline (CTC) are common members of the widely used veterinary drug tetracyclines, the residue of which in the environment can enter human body, being potentially harmful. In this study, we establish a new strategy to probe the binding modes of TC and CTC with trypsin based on spectroscopic and computational modeling methods. Both TC and CTC can interact with trypsin with one binding site to form trypsin-TC (CTC) complex, mainly through van der Waals' interactions and hydrogen bonds with the affinity order: TC>CTC. The bound TC (CTC) can result in inhibition of trypsin activity with the inhibition order: CTC>TC. The secondary structure and the microenvironment of the tryptophan residues of trypsin were also changed. However, the effect of CTC on the secondary structure content of trypsin was contrary to that of TC. Both the molecular docking study and the trypsin activity experiment revealed that TC bound into S1 binding pocket, competitively inhibiting the enzyme activity, and CTC was a non-competitive inhibitor which bound to a non-active site of trypsin, different from TC due to the Cl atom on the benzene ring of CTC which hinders CTC entering into the S1 binding pocket. CTC does not hinder the binding of the enzyme substrate, but the CTC-trypsin-substrate ternary complex can not further decompose into the product. The work provides basic data for clarifying the binding mechanisms of TC (CTC) with trypsin and can help to comprehensively understanding of the enzyme toxicity of different members of tetracyclines in vivo.
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Affiliation(s)
- Zhenxing Chi
- Shandong Provincial Key Laboratory of Water Pollution Control and Resource Reuse, School of Environmental Science and Engineering, Shandong University, China-America CRC for Environment and Health, Shandong Province, Jinan, People's Republic of China
| | - Rutao Liu
- Shandong Provincial Key Laboratory of Water Pollution Control and Resource Reuse, School of Environmental Science and Engineering, Shandong University, China-America CRC for Environment and Health, Shandong Province, Jinan, People's Republic of China
- * E-mail:
| | - Hongxu Yang
- Shandong Provincial Key Laboratory of Water Pollution Control and Resource Reuse, School of Environmental Science and Engineering, Shandong University, China-America CRC for Environment and Health, Shandong Province, Jinan, People's Republic of China
| | - Hengmei Shen
- Shandong Provincial Key Laboratory of Water Pollution Control and Resource Reuse, School of Environmental Science and Engineering, Shandong University, China-America CRC for Environment and Health, Shandong Province, Jinan, People's Republic of China
| | - Jing Wang
- Shandong Provincial Key Laboratory of Water Pollution Control and Resource Reuse, School of Environmental Science and Engineering, Shandong University, China-America CRC for Environment and Health, Shandong Province, Jinan, People's Republic of China
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21
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Cengiz M, Uslu MO, Balcioglu I. Treatment of E. coli HB101 and the tetM gene by Fenton's reagent and ozone in cow manure. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2010; 91:2590-3. [PMID: 20674148 DOI: 10.1016/j.jenvman.2010.07.005] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/25/2009] [Revised: 06/14/2010] [Accepted: 07/07/2010] [Indexed: 05/12/2023]
Abstract
The destruction of antibiotic-resistant microorganisms at the source of contamination is necessary due to their adverse effects and to their increasingly widespread occurrence in the environment. To address this problem, Fenton and ozone oxidation processes were applied to synthetically contaminated cow manure to remove the tetM gene and its host, Escherichia coli HB101. The efficiency of the processes was evaluated by enumeration of E. coli HB101 and by PCR amplification of the tetM gene. The results of this study show that 56.60% bacterial inactivation (corresponding to a 0.36 log reduction) was achieved by a Fenton reagent dose of 50 mM H(2)O(2) and 5 mM Fe(2+) without acidifying the manure. Despite the high organic content of cow manure, 98.50% bacterial inactivation (corresponding to a 1.83 log reduction) was obtained by the ozonation process with an applied dose of 3.125 mg ozone/g manure slurry. The PCR study revealed that the band intensity of the tetM gene gradually decreased by increasing the Fenton reagent and the applied ozone dose. However, significantly high doses of oxidants would be required to completely eliminate bacterial pollution in manure.
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Affiliation(s)
- Murat Cengiz
- Department of Pharmacology and Toxicology, Faculty of Veterinary Medicine, Uludag University, 16059, Bursa, Turkey
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22
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Chi Z, Liu R, Yang B, Zhang H. Toxic interaction mechanism between oxytetracycline and bovine hemoglobin. JOURNAL OF HAZARDOUS MATERIALS 2010; 180:741-747. [PMID: 20494513 DOI: 10.1016/j.jhazmat.2010.04.110] [Citation(s) in RCA: 89] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/04/2010] [Revised: 04/25/2010] [Accepted: 04/26/2010] [Indexed: 05/29/2023]
Abstract
Oxytetracycline (OTC) is a kind of widely used veterinary drugs. The residue of OTC in the environment is potentially harmful. In the present work, the interaction between OTC and bovine hemoglobin (BHb) was investigated by fluorescence, synchronous fluorescence, UV-vis absorption, circular dichroism and molecular modeling techniques under physiological conditions. The experimental results showed that OTC can bind with BHb to form complex. The binding process is a spontaneous molecular interaction procedure, in which van der Waals and hydrogen bonds interaction play a major role. The number of binding sites were calculated to be 1.12 (296 K), 1.07 (301 K) and 0.95 (308 K), and the binding constants were of K(296 K)=9.43 x 10(4) Lmol(-1), K(301 K)=4.56 x 10(4) Lmol(-1) and K(308 K)=1.12 x 10(4) Lmol(-1) at three different temperatures. Based on the Förster theory of nonradiative energy transfer, the binding distance between OTC and the inner tryptophan residues of BHb was determined to be 2.37 nm. The results of UV-vis absorption, synchronous fluorescence and CD spectra indicated that OTC can lead to conformational and some microenvironmental changes of BHb, which may affect physiological functions of hemoglobin. The synchronous fluorescence experiment revealed that OTC binds into hemoglobin central cavity, which was verified by molecular modeling study. The work is helpful for clarifying the molecular toxic mechanism of OTC in vivo.
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Affiliation(s)
- Zhenxing Chi
- School of Environmental Science and Engineering, Shandong University, China-America CRC for Environment & Health, Jinan, Shandong Province 250100, PR China
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23
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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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