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Zheng Y, Yang J, Li M, Zhu Y, Liang J, Yu D, Wang Z, Pei J. Mechanistic insight into the degradation of sulfadiazine by electro-Fenton system: Role of different reactive species. J Hazard Mater 2024; 469:134063. [PMID: 38508112 DOI: 10.1016/j.jhazmat.2024.134063] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/26/2023] [Revised: 03/08/2024] [Accepted: 03/16/2024] [Indexed: 03/22/2024]
Abstract
Sulfadiazine (SDZ), a widely used effective antibiotic, is resistant to conventional biological treatment, which is concerning since untreated SDZ discharge can pose a significant environmental risk. Electro-Fenton (EF) technology is a promising advanced oxidation technology for efficiently removing SDZ. However, due to the limitations of traditional experimental methods, there is a lack of in-depth study on the mechanism of ·OH-dominated SDZ degradation in EF process. In this study, an EF system was established for SDZ degradation and the transformation products (TPs) were detected by mass spectrometry. Dynamic thermodynamic, kinetic and wave function analysis of reactants, transition states and intermediates were proposed by density functional theory calculations, which was applied to elucidate the underlying mechanism of SDZ degradation. Experimental results showed that amino, benzene, and pyrimidine sites in SDZ were oxidized by ·OH, producing TPs through hydrogen abstraction and addition reactions. ·OH was kinetically more likely to attack SDZ- than SDZ. Fe(IV) dominated the single-electron transfer oxidation reaction of SDZ, and the formed organic radicals can spontaneously generate the de-SO2 product via Smiles rearrangement. Toxicity experiments showed the toxicity of SDZ and TPs can be greatly reduced. The results of this study promote the understanding of SDZ degradation mechanism in-depth. ENVIRONMENTAL IMPLICATION: Sulfadiazine (SDZ) is one of the antibiotics widely used around the world. However, it has posed a significant environmental risk due to its overuse and cannot be efficiently removed by traditional treatment methods. The lack of in-depth study on SDZ degradation mechanism under reactive species limits the improvement of SDZ degradation efficiency. Therefore, this work focused on SDZ degradation mechanism in-depth under electro-Fenton system through reactive species investigation, mass spectrometry analysis, and theoretical calculation. The results in this study can provide a theoretical basis for improving the SDZ degradation efficiency which will contribute to solving SDZ pollution problems.
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Affiliation(s)
- Yanshi Zheng
- School of Environment and Resources, Zhejiang A&F University, Hangzhou 311300, People's Republic of China; Sino-Spain Joint Laboratory for Agricultural Environment Emerging Contaminants of Zhejiang Province, School of Environment and Resources, Zhejiang A&F University, Hangzhou 311300, People's Republic of China
| | - Jinyan Yang
- School of Environment and Resources, Zhejiang A&F University, Hangzhou 311300, People's Republic of China; Sino-Spain Joint Laboratory for Agricultural Environment Emerging Contaminants of Zhejiang Province, School of Environment and Resources, Zhejiang A&F University, Hangzhou 311300, People's Republic of China
| | - Mei Li
- School of Environment and Resources, Zhejiang A&F University, Hangzhou 311300, People's Republic of China; Sino-Spain Joint Laboratory for Agricultural Environment Emerging Contaminants of Zhejiang Province, School of Environment and Resources, Zhejiang A&F University, Hangzhou 311300, People's Republic of China
| | - Yingshi Zhu
- Office of Scitech Research, Zhejiang Environment Technology Co., Ltd., Hangzhou 311100, People's Republic of China; Key Laboratory of Biomass Chemical Engineering of Ministry of Education, College of Chemical and Biological Engineering, Zhejiang University, Hangzhou 310058, People's Republic of China
| | - Jiayu Liang
- School of Environment and Resources, Zhejiang A&F University, Hangzhou 311300, People's Republic of China; Sino-Spain Joint Laboratory for Agricultural Environment Emerging Contaminants of Zhejiang Province, School of Environment and Resources, Zhejiang A&F University, Hangzhou 311300, People's Republic of China
| | - Dehai Yu
- State Key Laboratory of Urban Water Resource and Environment, School of Environment, Harbin Institute of Technology, Harbin 150090, People's Republic of China
| | - Ziyao Wang
- State Key Laboratory of Urban Water Resource and Environment, School of Environment, Harbin Institute of Technology, Harbin 150090, People's Republic of China
| | - Jianchuan Pei
- School of Environment and Resources, Zhejiang A&F University, Hangzhou 311300, People's Republic of China; Sino-Spain Joint Laboratory for Agricultural Environment Emerging Contaminants of Zhejiang Province, School of Environment and Resources, Zhejiang A&F University, Hangzhou 311300, People's Republic of China.
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2
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Wang H, Hu C, Wang Y, Zhao Y, Jin C, Guo L. Elucidating microalgae-mediated metabolism for sulfadiazine removal mechanism and transformation pathways. Environ Pollut 2023; 327:121598. [PMID: 37031851 DOI: 10.1016/j.envpol.2023.121598] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/05/2023] [Revised: 03/30/2023] [Accepted: 04/05/2023] [Indexed: 06/19/2023]
Abstract
Sulfadiazine (SDZ) as a typical sulfonamide antibiotic is commonly detected in wastewater, and its removal mechanism and transformation pathways in microalgae-mediated system remain unclear. In this study, the SDZ removal through hydrolysis, photodegradation, and biodegradation by Chlorella pyrenoidosa was investigated. Higher superoxide dismutase activity and biochemical components accumulation were obtained under SDZ stress. The SDZ removal efficiencies at different initial concentrations were 65.9-67.6%, and the removal rate followed pseudo first-order kinetic model. Batch tests and HPLC-MS/MS analyses suggested that biodegradation and photodegradation through the reactions of amine group oxidation, ring opening, hydroxylation, and the cleavage of S-N, C-N, C-S bond were dominant removal mechanisms and pathways. Characteristics of transformation products were evaluated to analyze their environmental impacts. High-value products of lipid, carbohydrate, and protein in microalgae biomass presented economic potential of microalgae-mediated metabolism for SDZ removal. The findings of this study broadened the knowledge for the microalgae self-protection from SDZ stress and provided a deep insight into SDZ removal mechanism and transformation pathways.
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Affiliation(s)
- Hutao Wang
- College of Environmental Science and Engineering, Ocean University of China, Qingdao, 266100, China
| | - Caiye Hu
- College of Environmental Science and Engineering, Ocean University of China, Qingdao, 266100, China
| | - Yi Wang
- Department of Biosystems Engineering, Auburn University, Auburn, AL, 36849, USA
| | - Yangguo Zhao
- College of Environmental Science and Engineering, Ocean University of China, Qingdao, 266100, China
| | - Chunji Jin
- College of Environmental Science and Engineering, Ocean University of China, Qingdao, 266100, China
| | - Liang Guo
- College of Environmental Science and Engineering, Ocean University of China, Qingdao, 266100, China; Key Laboratory of Marine Environmental and Ecology, Ministry of Education, Ocean University of China, Qingdao, 266100, China.
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3
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Zhu M, Chen X, Tang Y, Hou S, Yu Y, Fan X. Piezo-promoted persulfate activation by SrBi 2B 2O 7 for efficient sulfadiazine degradation from water. J Hazard Mater 2022; 437:129359. [PMID: 35753295 DOI: 10.1016/j.jhazmat.2022.129359] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/18/2022] [Revised: 06/07/2022] [Accepted: 06/08/2022] [Indexed: 06/15/2023]
Abstract
Combining piezoelectric effect and persulfate (PS) activation is a newly developed strategy for refractory emerging contaminants removal. In this work, borate SrBi2B2O7 (SBBO) is firstly developed as a piezoelectric material to piezo-assisted activation of PS for the removal of sulfadiazine (SDZ) under ultrasonic irradiation (US). SDZ could be efficiently degraded by 85.61 % in the system of PS/SBBO/US with a pseudo-first-order rate constant of 0.0520 min-1, which is faster than that in the systems of PS/SBBO (0.0210 min-1), SBBO/US (0.0041 min-1), PS/US (0.0074 min-1), and PS/BaTiO3/US (0.0120 min-1). The excellent degradation performance of the PS/SBBO/US system is mainly attributed to the piezoelectric effect of the SBBO which plays an important role in PS activation and accelerating reaction. Two oxidation processes, radical process (•O2- and •SO4-) and non-radical process (1O2 and electron transfer), exist during the SDZ degradation. The system of PS/SBBO/US also attains excellent removal efficiency in different SDZ contained water bodies. The possible degradation pathways mainly include cleavage of bonds, ring-opening, and hydroxylation process, and the toxicity of intermediates was predicted by T.E.S.T. software. This study provides new insight into piezoelectric catalysis associated with PS activation for SDZ removal.
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Affiliation(s)
- Mude Zhu
- Guangdong Key Laboratory of Environmental Pollution and Health, School of Environment, Jinan University, Guangzhou 510632, China
| | - Xueqin Chen
- Guangdong Key Laboratory of Environmental Pollution and Health, School of Environment, Jinan University, Guangzhou 510632, China
| | - Yi Tang
- Guangdong Key Laboratory of Environmental Pollution and Health, School of Environment, Jinan University, Guangzhou 510632, China
| | - Sen Hou
- Guangdong Key Laboratory of Environmental Pollution and Health, School of Environment, Jinan University, Guangzhou 510632, China
| | - Yang Yu
- Guangdong Key Laboratory of Environmental Pollution and Health, School of Environment, Jinan University, Guangzhou 510632, China
| | - Xiaoyun Fan
- Guangdong Key Laboratory of Environmental Pollution and Health, School of Environment, Jinan University, Guangzhou 510632, China.
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4
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Ling C, Wu S, Han J, Dong T, Zhu C, Li X, Xu L, Zhang Y, Zhou M, Pan Y. Sulfide-modified zero-valent iron activated periodate for sulfadiazine removal: Performance and dominant routine of reactive species production. Water Res 2022; 220:118676. [PMID: 35640509 DOI: 10.1016/j.watres.2022.118676] [Citation(s) in RCA: 34] [Impact Index Per Article: 17.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/25/2022] [Revised: 05/23/2022] [Accepted: 05/25/2022] [Indexed: 06/15/2023]
Abstract
In this work, sulfide-modified zero-valent iron (S-Fe0) was used to activate periodate (IO4-, PI) for sulfadiazine (SDZ) removal. 60 μM SDZ could be completely removed within only 1 min by S-Fe0/PI process. Compared with other oxidants including H2O2, peroxymonosulfate (PMS), peroxydisulfate (PDS), S-Fe0 activated PI exhibited better performance for SDZ removal but with lower Fe leaching. Compared with Fe0/PI process, S-Fe0/PI process could reduce more than 80% Fe0 and PI dosage. Inorganic ions and nature organic matters had negligible effect on SDZ removal in S-Fe0/PI system inducing its good SDZ removal efficiency in natural fresh water. 80.2% SDZ still could be removed within 2 min after 7th run. S-Fe0/PI process also exhibited 2.5 - 20.1 folds enhancement for various pollutants removal compared with Fe0/PI process. Scanning electron microscopy (SEM), X-ray photoelectron spectroscopy (XPS), electrochemical tests, and density functional theory (DFT) calculation were conducted to confirm the presence of sulfurs could enhance the reactivity of S-Fe0 thus increased the efficiency of PI activation for antibiotics removal. Electron paramagnetic resonance spectroscopy (EPR) tests, radical quenching experiments, quantitative detection and DFT calculation were performed to illustrate the role of multiple reactive species in SDZ removal and the dominant pathway of multiple reactive species production. IO3·, ·OH, O2-·, 1O2, FeIV, and SO4·- all participated in SDZ removal. ·OH played the major role in SDZ removal and the dominant routine of ·OH production was IO4- → O2-· → H2O2 → ·OH. Meanwhile, S-Fe0/PI process could efficiently mineralize SDZ and reduce the toxicity. Comparison with other PI activation approaches and SDZ treatment techniques further demonstrated S-Fe0 was an efficient catalyst for PI activation and present study process was a promising approach for antibiotics removal.
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Affiliation(s)
- Chen Ling
- College of Biology and the Environment, Nanjing Forestry University, Nanjing 210037, China
| | - Shuai Wu
- College of Biology and the Environment, Nanjing Forestry University, Nanjing 210037, China
| | - Jiangang Han
- College of Biology and the Environment, Nanjing Forestry University, Nanjing 210037, China
| | - Tailu Dong
- College of Biology and the Environment, Nanjing Forestry University, Nanjing 210037, China
| | - Changqing Zhu
- State Key Laboratory of Pollution Control and Resource Reuse, School of the Environment, Nanjing University, Nanjing 210023, China
| | - Xiuwen Li
- State Key Laboratory of Pollution Control and Resource Reuse, School of the Environment, Nanjing University, Nanjing 210023, China
| | - Lijie Xu
- College of Biology and the Environment, Nanjing Forestry University, Nanjing 210037, China
| | - Ying Zhang
- Key Laboratory of Pollution Process and Environmental Criteria, Ministry of Education, College of Environmental Science and Engineering, Nankai University, Tianjin 300350, China.
| | - Minghua Zhou
- Key Laboratory of Pollution Process and Environmental Criteria, Ministry of Education, College of Environmental Science and Engineering, Nankai University, Tianjin 300350, China.
| | - Yuwei Pan
- College of Biology and the Environment, Nanjing Forestry University, Nanjing 210037, China.
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5
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Liu T, Wu K, Wang M, Jing C, Chen Y, Yang S, Jin P. Performance and mechanisms of sulfadiazine removal using persulfate activated by Fe 3O 4@CuO x hollow spheres. Chemosphere 2021; 262:127845. [PMID: 32799147 DOI: 10.1016/j.chemosphere.2020.127845] [Citation(s) in RCA: 18] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/14/2020] [Revised: 07/24/2020] [Accepted: 07/25/2020] [Indexed: 06/11/2023]
Abstract
A Fe-Cu bimetal catalyst (FCHS) was synthesized by depositing Fe3O4 on the shell of CuOx hollow spheres, which were prepared via a soft template method. Several characterization methods, including XRD, SEM-EDS&mapping, TEM, FTIR, and XPS, were used to reveal the morphology and surface properties of FCHS. The characterization results demonstrated that the double-shell hollow structure is formed with a dense coating of Fe3O4 nanoparticles on the surface of CuOx hollow spheres. FCHS can exhibit excellent catalytic activity to degrade sulfadiazine (SDZ) with the oxidant of persulfate (PS). The optimal SDZ removal performance was explored by adjusting reaction parameters, including catalyst dosage, oxidant dosage, and solution pH. The SDZ removal efficiency in the FCHS + PS system could reach 95% at the optimal reaction condition ([catalyst]0 = 0.2 g/L, [PS]0 = 2 mM, pH = 7.0) with 5 mg/L of SDZ. Meanwhile, the degradation efficiency decreased with the coexistence of phosphate or carbonate anions. According to the results of radicals scavenging experiments and the electron paramagnetic resonance analysis, the radicals of SO4·-, O2·- and ·OH generated in the FCHS + PS system contribute to the degradation of SDZ. Moreover, the results of XPS revealed that the solid-state charge-transfer redox couple of Fe(III)/Fe(II) and Cu(I)/Cu(II) can promote the activation of PS. It means that the cooperation effect between Cu oxides and Fe oxides in the double-shell structure is beneficial to the catalytic degradation of SDZ. Furthermore, four possible pathways for SDZ degradation were proposed according to the analysis of intermediate products detected by the LCMS-IT-TOF.
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Affiliation(s)
- Ting Liu
- College of Resources and Environment, Northwest A&F University, Yangling, 712100, Shaanxi, China
| | - Kun Wu
- School of Environmental and Municipal Engineering, Xi'an University of Architecture and Technology, No.13, Yanta Road, Beiling District, Xi'an, 710055, Shaanxi Province, China; Key Laboratory of Water Resource, Environment and Ecology, MOE, Xi'an, 710055, China.
| | - Meng Wang
- School of Environmental and Municipal Engineering, Xi'an University of Architecture and Technology, No.13, Yanta Road, Beiling District, Xi'an, 710055, Shaanxi Province, China
| | - Chunyang Jing
- School of Environmental and Municipal Engineering, Xi'an University of Architecture and Technology, No.13, Yanta Road, Beiling District, Xi'an, 710055, Shaanxi Province, China
| | - Yuanyuan Chen
- School of Environmental and Municipal Engineering, Xi'an University of Architecture and Technology, No.13, Yanta Road, Beiling District, Xi'an, 710055, Shaanxi Province, China
| | - Shengjiong Yang
- School of Environmental and Municipal Engineering, Xi'an University of Architecture and Technology, No.13, Yanta Road, Beiling District, Xi'an, 710055, Shaanxi Province, China
| | - Pengkang Jin
- School of Environmental and Municipal Engineering, Xi'an University of Architecture and Technology, No.13, Yanta Road, Beiling District, Xi'an, 710055, Shaanxi Province, China
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6
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Septian A, Shin WS. Removal of sulfadiazine and ciprofloxacin by clays and manganese oxides: Coupled sorption-oxidation kinetic model. Chemosphere 2020; 250:126251. [PMID: 32113100 DOI: 10.1016/j.chemosphere.2020.126251] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/04/2019] [Revised: 02/11/2020] [Accepted: 02/15/2020] [Indexed: 06/10/2023]
Abstract
Sorption onto clays (montmorillonite and kaolinite), oxidation and sorption by manganese oxides (synthesized MnO and natural MnO), and coupled sorption-oxidation experiments were conducted for the removal of antibiotics sulfadiazine (SDZ) and ciprofloxacin (CIP) at pH 5 and 8. Individual sorption and oxidation modelling were carried out using the first-order kinetic model. A coupled sorption-oxidation kinetic model was developed to predict the simultaneous sorption and oxidation process. The coupled sorption-oxidation enhanced the antibiotic sorption, with the first-order sorption rate constants in the simultaneous presence of clays and manganese oxides (ksorp) being higher than those with clays only (ksorp0). In contrast, a depression was observed; the first-order oxidation and sorption combination rate constants in the simultaneous presence of manganese oxides and clays (kMnO) were lower than those with manganese oxides only (kMnO0). In the coupled sorption-oxidation reaction, 13.5-62.5% of SDZ and CIP removal was attributed to the sorption. The SDZ and CIP species distributions at pH 5 affected the coupled sorption and oxidation systems more than those at pH 8. The best removal efficiency was achieved by the montmorillonite-synthesized MnO combination, mainly due to the higher surface area (ABET) and pore size of montmorillonite and synthesized MnO combination compared to other clays and manganese oxides combinations.
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Affiliation(s)
- Ardie Septian
- School of Architecture, Civil, Environmental, and Energy Engineering, Kyungpook National University, Daegu, 41566, South Korea
| | - Won Sik Shin
- School of Architecture, Civil, Environmental, and Energy Engineering, Kyungpook National University, Daegu, 41566, South Korea.
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7
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Conde-Cid M, Fernández-Calviño D, Fernández-Sanjurjo MJ, Núñez-Delgado A, Álvarez-Rodríguez E, Arias-Estévez M. Effects of pine bark amendment on the transport of sulfonamide antibiotics in soils. Chemosphere 2020; 248:126041. [PMID: 32028162 DOI: 10.1016/j.chemosphere.2020.126041] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/10/2019] [Revised: 01/23/2020] [Accepted: 01/25/2020] [Indexed: 06/10/2023]
Abstract
In the present work, laboratory column experiments were carried out to study the effect of pine bark amendment (at doses of 0, 12, 48 and 96 Mg ha-1) on the transport of three sulfonamide antibiotics (sulfadiazine -SDZ-, sulfamethazine -SMT-, and sulfachloropyridazine -SCP-) through two crop soils. All three sulfonamides showed high mobility in the unamend soils, with absence of retention in most cases. However, some differences were detected regarding the degree of interactions between sulfonamides and soils, being higher for soil 1, which was attributed to its higher organic carbon content. For both soils, interactions with the antibiotics studied followed the sequence SDZ < SMT < SCP, indicating an increase as a function of the hydrophobicity of sulfonamides. Pine bark amendment significantly increased the retention of the three sulfonamides in both soils. Specifically, in the case of soil 1, the incorporation of the highest dose of pine bark (96 Mg ha-1) caused that retention increased from 0% to 70.3% for SDZ, from 2.7% to 71.3% for SMT, and from 0% to 85.4% for SCP. This effect of pine bark is mainly attributed to its high organic carbon content (48.6%), including substances with potential to interact and retain antibiotics, as well as to its acidic pH (4.5). Therefore, pine bark amendment would be an effective alternative to reduce the transport of sulfonamides in soils and, thus, decrease risks of passing to other environmental compartments, as well as harmful effects on the environment and public health.
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Affiliation(s)
- M Conde-Cid
- Soil Science and Agricultural Chemistry, Fac. Sciences, Univ. Vigo, 32004, Ourense, Spain
| | - D Fernández-Calviño
- Soil Science and Agricultural Chemistry, Fac. Sciences, Univ. Vigo, 32004, Ourense, Spain
| | - M J Fernández-Sanjurjo
- Dept. Soil Science and Agricultural Chemistry, Engineering Polytechnic School, Univ. Santiago de Compostela, 27002, Lugo, Spain
| | - A Núñez-Delgado
- Dept. Soil Science and Agricultural Chemistry, Engineering Polytechnic School, Univ. Santiago de Compostela, 27002, Lugo, Spain
| | - E Álvarez-Rodríguez
- Dept. Soil Science and Agricultural Chemistry, Engineering Polytechnic School, Univ. Santiago de Compostela, 27002, Lugo, Spain
| | - M Arias-Estévez
- Soil Science and Agricultural Chemistry, Fac. Sciences, Univ. Vigo, 32004, Ourense, Spain.
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8
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Kråkström M, Saeid S, Tolvanen P, Salmi T, Eklund P, Kronberg L. Catalytic ozonation of the antibiotic sulfadiazine: Reaction kinetics and transformation mechanisms. Chemosphere 2020; 247:125853. [PMID: 31931316 DOI: 10.1016/j.chemosphere.2020.125853] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/08/2019] [Revised: 01/03/2020] [Accepted: 01/04/2020] [Indexed: 06/10/2023]
Abstract
In this work, ozone has been used to study the transformation of the antibiotic sulfadiazine (SDZ). SDZ and its transformation products was investigated using liquid chromatography coupled to mass spectrometry and using NMR. The results revealed that 6% of SDZ is transformed into 2-aminopyrimidine. A significant amount of SDZ undergoes a rearrangement reaction followed by ring-closing reactions. One of these products, SDZ-P15, is the main product after 240 min of ozonation. Almost 30% of SDZ transforms into SDZ-P15. SDZ was also transformed via the addition of one or more hydroxyl groups, via the oxidation of an amine group to a nitro group as well as via a bond cleavage reaction. Most of the intermediate products presented in this study have not previously been reported as SDZ transformation products formed using ozonation technology.
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Affiliation(s)
- Matilda Kråkström
- Laboratory of Organic Chemistry, Johan Gadolin Process Chemistry Centre, Åbo Akademi University, Turku, Finland.
| | - Soudabeh Saeid
- Laboratory of Industrial Chemistry and Reaction Engineering, Johan Gadolin Process Chemistry Centre, Åbo Akademi University, Turku, Finland
| | - Pasi Tolvanen
- Laboratory of Industrial Chemistry and Reaction Engineering, Johan Gadolin Process Chemistry Centre, Åbo Akademi University, Turku, Finland
| | - Tapio Salmi
- Laboratory of Industrial Chemistry and Reaction Engineering, Johan Gadolin Process Chemistry Centre, Åbo Akademi University, Turku, Finland
| | - Patrik Eklund
- Laboratory of Organic Chemistry, Johan Gadolin Process Chemistry Centre, Åbo Akademi University, Turku, Finland
| | - Leif Kronberg
- Laboratory of Organic Chemistry, Johan Gadolin Process Chemistry Centre, Åbo Akademi University, Turku, Finland
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9
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Robertson LP, Moodie LWK, Holland DC, Jandér KC, Göransson U. Sulfadiazine Masquerading as a Natural Product from Scilla madeirensis (Scilloideae). J Nat Prod 2020; 83:1305-1308. [PMID: 32208615 PMCID: PMC7307949 DOI: 10.1021/acs.jnatprod.0c00163] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 02/13/2020] [Indexed: 06/10/2023]
Abstract
The structure of 2,4-(4'-aminobenzenamine)pyrimidine (1), a pyrimidine alkaloid previously isolated from the bulbs of Scilla madeirensis (Asparagaceae, synonym Autonoë madeirensis), has been revised. These conclusions were met via comparison of reported NMR and EIMS data with those obtained from synthetic standards. The corrected structure is the antibiotic sulfadiazine (2), which has likely been isolated as a contaminant from the site of collection. The reported bioactivity of 1 as an α1-adrenoceptor antagonist should instead be ascribed to sulfadiazine. Our findings appear to show another example of an anthropogenic contaminant being identified as a natural product and emphasize the importance of considering the biosynthetic origins of isolated compounds within a phylogenetic context.
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Affiliation(s)
- Luke P. Robertson
- Plant
Ecology and Evolution, Department of Ecology and Genetics, Evolutionary
Biology Centre, Uppsala University, 75236 Uppsala, Sweden
- Pharmacognosy,
Department of Medicinal Chemistry, Biomedical Centre, Uppsala University, 75123 Uppsala, Sweden
| | - Lindon W. K. Moodie
- Drug
Design and Discovery, Department of Medicinal Chemistry, Biomedical
Centre, Uppsala University, 75123 Uppsala, Sweden
- Uppsala
Antibiotic Centre, Uppsala University, 75123 Uppsala, Sweden
| | - Darren C. Holland
- Environmental
Futures Research Institute, Griffith University, Southport 4222, Gold Coast, Australia
| | - K. Charlotte Jandér
- Plant
Ecology and Evolution, Department of Ecology and Genetics, Evolutionary
Biology Centre, Uppsala University, 75236 Uppsala, Sweden
| | - Ulf Göransson
- Pharmacognosy,
Department of Medicinal Chemistry, Biomedical Centre, Uppsala University, 75123 Uppsala, Sweden
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10
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Lu J, Wang T, Zhou Y, Cui C, Ao Z, Zhou Y. Dramatic enhancement effects of l-cysteine on the degradation of sulfadiazine in Fe 3+/CaO 2 system. J Hazard Mater 2020; 383:121133. [PMID: 31536866 DOI: 10.1016/j.jhazmat.2019.121133] [Citation(s) in RCA: 37] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/08/2019] [Revised: 08/28/2019] [Accepted: 08/31/2019] [Indexed: 06/10/2023]
Abstract
Excessive sulfonamides accumulated in soil and groundwater seriously menace the ecological environment and human health. The performance of a Fenton-like system applying Fe3+ and calcium peroxide (CaO2) in the presence of l-cysteine(l-cys) for sulfadiazine (SDZ) degradation was investigated. Compared with other chelating agents such as citric acid, butyric acid and Ethylenediaminetetraacetic acid, l-cys could effectively promote the SDZ removal in Fe3+/CaO2 system. With the addition of 0.5 mM l-cys, the SDZ degradation increased from 2.14% to 66.53% in 60 min. High concentration of HCO3- inhibited the degradation of SDZ while slightly negative effects on SDZ degradation were observed in the presence of Cl- or humic acid (HA) in l-cys/Fe3+/CaO2 system. Electron paramagnetic resonance (EPR) analysis and radicals scavenge tests affirmed the generation of OH and O2- in l-cys/Fe3+/CaO2 system. Possible degradation pathway of SDZ was speculated and the toxicity of SDZ intermediates was further evaluated. l-cys could enhance the reduction of Fe3+ to Fe2+ and reduced the Fe3+ precipitation due to the l-cys could form stable complexes with Fe3+. l-cys/Fe3+/CaO2 system exhibited high mineralization ability. Overall, these results indicated that l-cys is a promising chelating agent for sulfadiazine wastewater treatment.
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Affiliation(s)
- Jian Lu
- State Environmental Protection Key Laboratory of Environmental Risk Assessment and Control on Chemical Process, East China University of Science and Technology, No. 130 Meilong Road, Shanghai, 200237, China
| | - Tenghao Wang
- State Environmental Protection Key Laboratory of Environmental Risk Assessment and Control on Chemical Process, East China University of Science and Technology, No. 130 Meilong Road, Shanghai, 200237, China
| | - Yi Zhou
- State Environmental Protection Key Laboratory of Environmental Risk Assessment and Control on Chemical Process, East China University of Science and Technology, No. 130 Meilong Road, Shanghai, 200237, China
| | - Changzheng Cui
- State Environmental Protection Key Laboratory of Environmental Risk Assessment and Control on Chemical Process, East China University of Science and Technology, No. 130 Meilong Road, Shanghai, 200237, China; Shanghai Institute of Pollution Control and Ecological Security, No. 1515 Zhongshan Second North Road, Shanghai, 200092, China
| | - Zhimin Ao
- Guangdong Key Laboratory of Environmental Catalysis and Health Risk Control, Institute of Environmental Health and Pollution Control, School of Environmental Science and Engineering, Guangdong University of Technology, Guangzhou, 510006, China
| | - Yanbo Zhou
- State Environmental Protection Key Laboratory of Environmental Risk Assessment and Control on Chemical Process, East China University of Science and Technology, No. 130 Meilong Road, Shanghai, 200237, China; Shanghai Institute of Pollution Control and Ecological Security, No. 1515 Zhongshan Second North Road, Shanghai, 200092, China.
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11
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Conde-Cid M, Fernández-Calviño D, Fernández-Sanjurjo MJ, Núñez-Delgado A, Álvarez-Rodríguez E, Arias-Estévez M. Adsorption/desorption and transport of sulfadiazine, sulfachloropyridazine, and sulfamethazine, in acid agricultural soils. Chemosphere 2019; 234:978-986. [PMID: 31519107 DOI: 10.1016/j.chemosphere.2019.06.121] [Citation(s) in RCA: 25] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/15/2019] [Revised: 06/11/2019] [Accepted: 06/16/2019] [Indexed: 06/10/2023]
Abstract
Batch-type experiments were used to study adsorption-desorption of three sulfonamides: sulfadiazine (SDZ) sulfachloropyridazine (SCP), and sulfamethazine (SMT), in five crop soils, whereas laboratory soil column experiments were employed to obtain data on transport processes. Adsorption results were satisfactorily adjusted to Linear and Feundlich equations, with R2 values above 0.95. Adsorption followed the sequence SDZ < SMT < SCP, showing higher values for soils with higher levels of organic carbon (OC) content. Conversely, desorption was higher in soils with less OC, and lower in soils with higher OC contents. The temporal moment analysis method gave values for the transport parameters τ and R which were significantly correlated with soil parameters related to organic matter, specifically OC and N concentrations. The higher retention of the three sulfonamides in soils with high organic matter content is a relevant fact, with value when programming management practices in agricultural soils, and specifically in relation to the spreading of animal manures, slurries, or waste containing these emerging pollutants.
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Affiliation(s)
- M Conde-Cid
- Soil Science and Agricultural Chemistry, Fac. Sciences, Univ. Vigo, 32004, Ourense, Spain
| | - D Fernández-Calviño
- Soil Science and Agricultural Chemistry, Fac. Sciences, Univ. Vigo, 32004, Ourense, Spain
| | - M J Fernández-Sanjurjo
- Dept. Soil Science and Agricultural Chemistry, Engineering Polytechnic School, Univ. Santiago de Compostela, 27002, Lugo, Spain
| | - A Núñez-Delgado
- Dept. Soil Science and Agricultural Chemistry, Engineering Polytechnic School, Univ. Santiago de Compostela, 27002, Lugo, Spain
| | - E Álvarez-Rodríguez
- Dept. Soil Science and Agricultural Chemistry, Engineering Polytechnic School, Univ. Santiago de Compostela, 27002, Lugo, Spain
| | - M Arias-Estévez
- Soil Science and Agricultural Chemistry, Fac. Sciences, Univ. Vigo, 32004, Ourense, Spain.
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12
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Yu K, Sun C, Zhang B, Hassan M, He Y. Size-dependent adsorption of antibiotics onto nanoparticles in a field-scale wastewater treatment plant. Environ Pollut 2019; 248:1079-1087. [PMID: 31091640 DOI: 10.1016/j.envpol.2019.02.090] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/09/2018] [Revised: 02/22/2019] [Accepted: 02/25/2019] [Indexed: 06/09/2023]
Abstract
This work present aims to evaluate the effect of a conventional wastewater treatment process on the number of nanoparticles, and the role of nanoparticles as a carrier of antibiotics. A set of methods based on asymmetrical flow field flow fractionation coupled with multi-angle light scattering to separate and quantify nanoparticles in real wastewater was established. The characterization of nanoparticles was conducted by transmission electron microscopy, energy dispersive spectrometer, UV-visible spectrophotometer and three-dimensional excitation-emission matrix fluorescence spectroscopy. The adsorption of different sizes of nanoparticles separated from the real wastewater for four targeted antibiotics (sulfadiazine, ofloxacin, tylosin and tetracycline) was studied. The results show that the number of nanoparticles were increased in the wastewater treatment process and the size range between 60 and 80 nm was predominant in wastewater samples. The nanoparticles were mainly composed of O, Si, Al and Ca elements and organic components were in the size range of 0-10 nm. Targeted antibiotics were dominantly adsorbed onto nanoparticles with 60-80 nm size range at each stage. The concentrations of tetracycline adsorbed on nanoparticles were surprisingly increased in the end of the treatment process, while ofloxacin and tylosin had the completely opposite phenomenon to tetracycline. The pH and ionic strength definitely affected the aggregation of nanoparticles and interaction with the antibiotics. It is of great significance to give insights into nanoparticle-antibiotic assemblages for the effective treatment and avoiding the water risks due to nanoparticles' ubiquitous and their risks of carrying antibiotics.
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Affiliation(s)
- Kaifeng Yu
- School of Environmental Science & Engineering, Shanghai Jiaotong University, 800 Dongchuan Road, Shanghai, 200240, China
| | - Chi Sun
- School of Environmental Science & Engineering, Shanghai Jiaotong University, 800 Dongchuan Road, Shanghai, 200240, China
| | - Bo Zhang
- School of Environmental Science & Engineering, Shanghai Jiaotong University, 800 Dongchuan Road, Shanghai, 200240, China.
| | - Muhammad Hassan
- School of Environmental Science & Engineering, Shanghai Jiaotong University, 800 Dongchuan Road, Shanghai, 200240, China
| | - Yiliang He
- School of Environmental Science & Engineering, Shanghai Jiaotong University, 800 Dongchuan Road, Shanghai, 200240, China
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13
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Ren G, Zhou M, Su P, Yang W, Lu X, Zhang Y. Simultaneous sulfadiazines degradation and disinfection from municipal secondary effluent by a flow-through electro-Fenton process with graphene-modified cathode. J Hazard Mater 2019; 368:830-839. [PMID: 30743230 DOI: 10.1016/j.jhazmat.2019.01.109] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/05/2018] [Revised: 01/29/2019] [Accepted: 01/30/2019] [Indexed: 06/09/2023]
Abstract
Conventionally the deep treatment and disinfection are fulfilled by different processes for municipal wastewater treatment, this work verified a breakthrough by one process of novel flow-through electro-Fenton (EF) with graphene-modified cathode, which is usually seemed to be ineffective. This process was firstly confirmed to be cost-effective for simultaneous sulfadiazines (SDZs) degradation and disinfection from municipal secondary effluent with a very low electrical energy consumption (EEC) of 0.21 kW h/m3, attributed to the high H2O2 production of 4.41 mg/h/cm2 on the novel graphite felt cathode modified by electrochemically exfoliated graphene (EEGr) with a low EEC of 3.08 kW h/(kg H2O2). Compared with the ineffective SDZs degradation by the conventional flow EF, this process was more cost-effective and overcame the harsh requirements on electrolyte concentration. It also showed good effectiveness in the degradation of different antibiotics, and the graphene-modified cathode still kept stable performance after eight consecutive runs. Account for the combined action of OH and active chlorine, the formation of hydroxylated and chlorine containing by-products was confirmed, and a possible degradation mechanism for SDZs was proposed. This flow-through EF process provided an alternative method for the disinfection and antibiotics degradation by one process for the treatment and reuse of municipal secondary effluent.
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Affiliation(s)
- Gengbo Ren
- Key Laboratory of Pollution Process and Environmental Criteria, Ministry of Education, College of Environmental Science and Engineering, Nankai University, Tianjin, 300350, China; Tianjin Key Laboratory of Urban Ecology Environmental Remediation and Pollution Control, College of Environmental Science and Engineering, Nankai University, Tianjin 300350, China; Tianjin Advanced Water Treatment Technology International Joint Research Center, College of Environmental Science and Engineering, Nankai University, Tianjin, 300350, China; Tianjin Key Laboratory of Environmental Technology for Complex Trans-Media Pollution, Nankai University, Tianjin, 300350, China
| | - Minghua Zhou
- Key Laboratory of Pollution Process and Environmental Criteria, Ministry of Education, College of Environmental Science and Engineering, Nankai University, Tianjin, 300350, China; Tianjin Key Laboratory of Urban Ecology Environmental Remediation and Pollution Control, College of Environmental Science and Engineering, Nankai University, Tianjin 300350, China; Tianjin Advanced Water Treatment Technology International Joint Research Center, College of Environmental Science and Engineering, Nankai University, Tianjin, 300350, China; Tianjin Key Laboratory of Environmental Technology for Complex Trans-Media Pollution, Nankai University, Tianjin, 300350, China.
| | - Pei Su
- Key Laboratory of Pollution Process and Environmental Criteria, Ministry of Education, College of Environmental Science and Engineering, Nankai University, Tianjin, 300350, China; Tianjin Key Laboratory of Urban Ecology Environmental Remediation and Pollution Control, College of Environmental Science and Engineering, Nankai University, Tianjin 300350, China; Tianjin Advanced Water Treatment Technology International Joint Research Center, College of Environmental Science and Engineering, Nankai University, Tianjin, 300350, China; Tianjin Key Laboratory of Environmental Technology for Complex Trans-Media Pollution, Nankai University, Tianjin, 300350, China
| | - Weilu Yang
- Key Laboratory of Pollution Process and Environmental Criteria, Ministry of Education, College of Environmental Science and Engineering, Nankai University, Tianjin, 300350, China; Tianjin Key Laboratory of Urban Ecology Environmental Remediation and Pollution Control, College of Environmental Science and Engineering, Nankai University, Tianjin 300350, China; Tianjin Advanced Water Treatment Technology International Joint Research Center, College of Environmental Science and Engineering, Nankai University, Tianjin, 300350, China; Tianjin Key Laboratory of Environmental Technology for Complex Trans-Media Pollution, Nankai University, Tianjin, 300350, China
| | - Xiaoye Lu
- Key Laboratory of Pollution Process and Environmental Criteria, Ministry of Education, College of Environmental Science and Engineering, Nankai University, Tianjin, 300350, China; Tianjin Key Laboratory of Urban Ecology Environmental Remediation and Pollution Control, College of Environmental Science and Engineering, Nankai University, Tianjin 300350, China; Tianjin Advanced Water Treatment Technology International Joint Research Center, College of Environmental Science and Engineering, Nankai University, Tianjin, 300350, China; Tianjin Key Laboratory of Environmental Technology for Complex Trans-Media Pollution, Nankai University, Tianjin, 300350, China
| | - Yinqiao Zhang
- Key Laboratory of Pollution Process and Environmental Criteria, Ministry of Education, College of Environmental Science and Engineering, Nankai University, Tianjin, 300350, China; Tianjin Key Laboratory of Urban Ecology Environmental Remediation and Pollution Control, College of Environmental Science and Engineering, Nankai University, Tianjin 300350, China; Tianjin Advanced Water Treatment Technology International Joint Research Center, College of Environmental Science and Engineering, Nankai University, Tianjin, 300350, China; Tianjin Key Laboratory of Environmental Technology for Complex Trans-Media Pollution, Nankai University, Tianjin, 300350, China
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14
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Song Q, Liang J, Fang Y, Cao C, Liu Z, Li L, Huang Y, Lin J, Tang C. Selective adsorption behavior/mechanism of antibiotic contaminants on novel boron nitride bundles. J Hazard Mater 2019; 364:654-662. [PMID: 30396138 DOI: 10.1016/j.jhazmat.2018.10.054] [Citation(s) in RCA: 40] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/24/2018] [Revised: 10/17/2018] [Accepted: 10/19/2018] [Indexed: 06/08/2023]
Abstract
The novel hexagonal boron nitride (BN) bundles, assembled by a plenty of BN fibers with high adsorption capacity and outstanding recyclability, were prepared easily as an efficient adsorbent for antibiotics. It is an excellent substitute for carbonaceous adsorbent to overcome the shortcoming in low adsorption capacity and poor recyclability. Its high surface area can reach up to 871.456 m2 g-1. The adsorption capacity and removal percentage to sulfadiazine (SDZ, 0.328 mmol g-1, 82.192%), oxytetracycline (OTC, 0.202 mmol g-1, 92.890%) and erythromycin (EM, 0.126 mmol g-1, 90.140%) are superior compared with activated carbon and graphene nanoplatelets. It is interesting that BN bundles have a better adsorption to small molecules since huge molecules are easily restricted to enter the micropores, which was defined as micropore-filling effect. Moreover, the adsorption isotherms are well fitted by the Langmuir and Tempkin model, while pseudo-second-order model can better describe the adsorption kinetics. The adsorption mechanisms were deduced to be mainly π-π electron-donor-accepter interaction while electrostatic force and hydrophobic interaction played a significant role. The excellent reusability can be seen from the high removal efficiency after five recycles suggesting the BN bundles was a promising adsorbent for the efficient removal of antibiotics pollutants.
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Affiliation(s)
- Qianqian Song
- School of Materials Science and Engineering, Hebei University of Technology, Tianjin 300130, PR China; Hebei Key Laboratory of Boron Nitride Micro and Nano Materials, Hebei University of Technology, Tianjin 300130, PR China
| | - Jianli Liang
- School of Materials Science and Engineering, Hebei University of Technology, Tianjin 300130, PR China; Hebei Key Laboratory of Boron Nitride Micro and Nano Materials, Hebei University of Technology, Tianjin 300130, PR China
| | - Yi Fang
- School of Materials Science and Engineering, Hebei University of Technology, Tianjin 300130, PR China; Hebei Key Laboratory of Boron Nitride Micro and Nano Materials, Hebei University of Technology, Tianjin 300130, PR China.
| | - Chaochao Cao
- School of Materials Science and Engineering, Hebei University of Technology, Tianjin 300130, PR China; Hebei Key Laboratory of Boron Nitride Micro and Nano Materials, Hebei University of Technology, Tianjin 300130, PR China
| | - Zhenya Liu
- School of Materials Science and Engineering, Hebei University of Technology, Tianjin 300130, PR China; Hebei Key Laboratory of Boron Nitride Micro and Nano Materials, Hebei University of Technology, Tianjin 300130, PR China
| | - Lanlan Li
- School of Materials Science and Engineering, Hebei University of Technology, Tianjin 300130, PR China; Hebei Key Laboratory of Boron Nitride Micro and Nano Materials, Hebei University of Technology, Tianjin 300130, PR China
| | - Yang Huang
- School of Materials Science and Engineering, Hebei University of Technology, Tianjin 300130, PR China; Hebei Key Laboratory of Boron Nitride Micro and Nano Materials, Hebei University of Technology, Tianjin 300130, PR China
| | - Jing Lin
- School of Materials Science and Engineering, Hebei University of Technology, Tianjin 300130, PR China; Hebei Key Laboratory of Boron Nitride Micro and Nano Materials, Hebei University of Technology, Tianjin 300130, PR China
| | - Chengchun Tang
- School of Materials Science and Engineering, Hebei University of Technology, Tianjin 300130, PR China; Hebei Key Laboratory of Boron Nitride Micro and Nano Materials, Hebei University of Technology, Tianjin 300130, PR China.
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15
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Conde-Cid M, Fernández-Calviño D, Nóvoa-Muñoz JC, Arias-Estévez M, Díaz-Raviña M, Núñez-Delgado A, Fernández-Sanjurjo MJ, Álvarez-Rodríguez E. Degradation of sulfadiazine, sulfachloropyridazine and sulfamethazine in aqueous media. J Environ Manage 2018; 228:239-248. [PMID: 30227336 DOI: 10.1016/j.jenvman.2018.09.025] [Citation(s) in RCA: 30] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/08/2018] [Revised: 09/03/2018] [Accepted: 09/08/2018] [Indexed: 06/08/2023]
Abstract
Antibiotics discharged to the environment constitute a main concern for which different treatment alternatives are being studied, some of them based on antibiotics removal or inactivation using by-products with adsorbent capacity, or which can act as catalyst for photo-degradation. But a preliminary step is to determine the general characteristics and magnitude of the degradation process effectively acting on antibiotics. A specific case is that of sulfonamides (SAs), one of the antibiotic groups most widely used in veterinary medicine, and which are considered the most mobile antibiotics, causing that they are frequently detected in both surface- and ground-waters, facilitating their entry in the food chain and causing public health hazards. In this work we investigated abiotic and biotic degradation of three sulfonamides (sulfadiazine -SDZ-, sulfachloropyridazine -SCP-, and sulfamethazine -SMT-) in aqueous media. The results indicated that, in filtered milliQ water and under simulated sunlight, the degradation sequence was: SCP > SDZ ≈ SMT. Furthermore, the rate of degradation clearly increased with the raise of pH: at pH 4.0, half-lives were 1.2, 70.5 and 84.4 h for SCP, SDZ and SMT, respectively, while at pH 7.2 they were 2.3, 9.4 and 13.2 h for SCP, SMT and SDZ. The addition of a culture medium hardly caused any change in degradation rates as compared to experiments performed in milliQ water at the same pH value (7.2), suggesting that in this case sulfonamides degradation rate was not affected by the presence of some chemical elements and compounds, such as sodium, chloride and phosphate. However, the addition of bacterial suspensions extracted from a soil and from poultry manure increased the rate of degradation of these antibiotics. This increase in degradation cannot be attributed to biodegradation, since there was no degradation in the dark during the time of the experiment (72 h). This indicates that photo-degradation constitutes the main removal mechanism for SAs in aqueous media, a mechanism that in this case was favored by humic acids supplied with the extracts from soil and manure. The overall results could contribute to the understanding of the environmental fate of the three sulfonamides studied, aiding to program actions that could favor their inactivation, which is especially relevant since its dissemination can involve serious environmental and public health risks.
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Affiliation(s)
- M Conde-Cid
- Soil Science and Agricultural Chemistry, Fac. Sciences, Univ. Vigo, 32004, Ourense, Spain.
| | - D Fernández-Calviño
- Soil Science and Agricultural Chemistry, Fac. Sciences, Univ. Vigo, 32004, Ourense, Spain
| | - J C Nóvoa-Muñoz
- Soil Science and Agricultural Chemistry, Fac. Sciences, Univ. Vigo, 32004, Ourense, Spain
| | - M Arias-Estévez
- Soil Science and Agricultural Chemistry, Fac. Sciences, Univ. Vigo, 32004, Ourense, Spain
| | - M Díaz-Raviña
- Dept. Soil Biochemistry, Inst. Invest. Agrobiol. de Galicia (CSIC - IIAG), Santiago de Compostela, Spain
| | - A Núñez-Delgado
- Dept. Soil Science and Agricultural Chemistry, Engineering Polytechnic School, Univ. Santiago de Compostela, 27002, Lugo, Spain
| | - M J Fernández-Sanjurjo
- Dept. Soil Science and Agricultural Chemistry, Engineering Polytechnic School, Univ. Santiago de Compostela, 27002, Lugo, Spain
| | - E Álvarez-Rodríguez
- Dept. Soil Science and Agricultural Chemistry, Engineering Polytechnic School, Univ. Santiago de Compostela, 27002, Lugo, Spain
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16
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Vione D, Koehler B. Modelled phototransformation kinetics of the antibiotic sulfadiazine in organic matter-rich lakes. Sci Total Environ 2018; 645:1465-1473. [PMID: 30248868 DOI: 10.1016/j.scitotenv.2018.07.206] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/25/2018] [Revised: 07/06/2018] [Accepted: 07/16/2018] [Indexed: 06/08/2023]
Abstract
Xenobiotic compounds are commonly detected in inland waters. Sunlight-induced photochemical reactions contribute to xenobiotic degradation, but the role of different photoreactions on large geographic scales remains poorly understood. Here, we used a combination of photochemical modelling and large-scale field data from 1020 lakes across Sweden to elucidate the photodegradation kinetics of the commonly used antibiotic sulfadiazine (SDZ) in organic matter-rich lakes. SDZ occurs in two forms, namely acidic HSDZ (pKa = 6.5) and basic/deprotonated SDZ-. Both species are oxidised fast by the photogenerated triplet states of natural organic matter (3NOM*). However, they also undergo efficient back reactions because the partially oxidised HSDZ (and SDZ- to a larger extent) can be reduced back to the initial compounds by the phenolic moieties contained in NOM. Typical lakes in Sweden are rich in NOM and have low pH, with the consequence that SDZ photochemistry would be dominated by HSDZ. Our simulation results showed that SDZ photodegradation kinetics in Swedish lakes would become significantly slower with increasing water depth and pH, while it depended little on latitude, which affects irradiance, or on organic matter content. As a consequence, SDZ would be particularly persistent in lakewater in some densely populated areas with relatively deep and high-pH lakes such as, most notably, the Stockholm region. Here the surface waters could be more heavily contaminated by pharmaceuticals compared to the scarcely populated regions in the centre-north of the country, where lakewater could otherwise promote an efficient photodegradation of SDZ.
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Affiliation(s)
- Davide Vione
- Department of Chemistry, University of Torino, Via Pietro Giuria 5, 10125 Torino, Italy; NatRisk Inter-Department Centre, University of Torino, Largo Paolo Braccini 2, 10095 Grugliasco (TO), Italy.
| | - Birgit Koehler
- Department of Ecology and Genetics/Limnology, Evolutionary Biology Centre, Uppsala University, Norbyvägen 18 D, 75236 Uppsala, Sweden
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17
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Naser NA, Alasedi KM, Khan ZA. New approach for determination of sulfadiazine in pharmaceutical preparations using 4(4-sulphophenylazo)pyrogallol: Kinetic spectrophotometric method. Spectrochim Acta A Mol Biomol Spectrosc 2018; 201:267-280. [PMID: 29758513 DOI: 10.1016/j.saa.2018.05.012] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/03/2018] [Revised: 04/11/2018] [Accepted: 05/03/2018] [Indexed: 06/08/2023]
Abstract
A new trend describes the development and validation of a simple, sensitive and selective kinetic spectrophotometric methods for the determination of sulfadiazine in pharmaceutical formulations has been conducted. In this paper, sulfadiazine was derivatized as a new organic compound 4(4-sulphophenylazo) pyrogallol, 4-SPAP, by coupling pyrogallol with diazotized sulfadiazine in medium of controlled pH. 4-SPAP was characterized by techniques of FT-IR, H-NMR, GC-Mass, TG and DSC thermal analysis methods. Solvatochromic behavior in solvents of various polarities was also investigated. The determination of sulfadiazine was accomplished by initial rate and fixed time methods. These methods were based on the reaction of the compound containing sulfadiazine, 4-SPAP, with Ca(II) to form colored product with a maximum absorbance at 520 nm. The two methods were adopted for constructing the calibration curves and examined for their suitability for the quantitation of sulfadiazine in pharmaceuticals. The limit of detection (LOD) and limit of quantification (LOQ) were found to be, by initial rate method, 0.35 and 1.05 μg·mL-1and that by fixed time method were found to be 0.69 and 2.07 μg·mL-1, respectively. The percent relative standard deviations (%RSD) for the results ranged from 1.04% to 1.76% and 0.85% to 1.42% for the initial rate and fixed time methods of the proposed kinetic spectrophotometric method, respectively. The existence of common excipients in the pharmaceutical formulation did not produce any significant interference. Statistical comparison was reported as indicated from the F- and t-test data of the proposed methods with that of reference method showing excellent agreement and indicating no significant difference in their accuracy and precision.
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Affiliation(s)
- Naser A Naser
- Department of Chemistry, Faculty of Science, University of Kufa, P.O. Box(21), Najaf Governorate, Iraq.
| | - Kasim M Alasedi
- AL-Sheik al-tousi, University College, An-najaf al-ashraf, P.O. Box(9), Iraq.
| | - Zainab A Khan
- Department of Chemistry, Faculty of Education for Girls, University of Kufa, P.O. Box(21), Najaf Governorate, Iraq.
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18
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Tao Y, Cai J, Huai X, Liu B. A novel antibiotic wastewater degradation technique combining cavitating jets impingement with multiple synergetic methods. Ultrason Sonochem 2018; 44:36-44. [PMID: 29680622 DOI: 10.1016/j.ultsonch.2018.02.008] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/17/2017] [Revised: 02/02/2018] [Accepted: 02/05/2018] [Indexed: 05/23/2023]
Abstract
Antibiotics degradation remains a longstanding challenge in wastewater treatment. Towards this objective, we have developed a novel technique combining cavitating jets impingement with multiple synergetic methods, i.e., UV/Fenton, analogous Fenton, and photocatalytic oxidation in the present work. Three kinds of antibiotics namely amoxicillin, doxycycline and sulfadiazine sodium, are selected as model pollutants. Individual application of cavitating jets impingement is firstly conducted to evaluate the effects of jets impinging forms and nozzle inlet pressure. The effects of impingement on promoting antibiotics degradation and weakening the coalescing effects of cavitation bubbles are confirmed. Perpendicular double cavitating jets impingement is proved to be the most effective impinging form and brought a COD (chemical oxidation demand) reduction of 30.04% with the impinging effect index 1.22 at jet inlet pressure 10 MPa. Increasing the jet inlet pressure can improve the COD reduction and the effectiveness of impingement. Subsequently, UV/Fenton process is introduced to intensify the degradation process. The effects of important parameters are investigated by means of orthogonal experiments and the maximum COD reduction is up to 71.16% under the optimum conditions. Then, analogous Fenton process and photocatalytic oxidation are adopted for further enhancing the COD reduction. Different approaches used in the present work are assessed in view of multiple aspects. With COD reduction of 79.92%, the combination of cavitating jets impingement, UV/Fenton, analogous Fenton and photocatalytic oxidation is proved to be optimum method for antibiotic wastewater treatment.
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Affiliation(s)
- Yuequn Tao
- Institute of Engineering Thermophysics, Chinese Academy of Sciences, Beijing 100190, China; University of Chinese Academy of Sciences, Beijing 100049, China
| | - Jun Cai
- Institute of Engineering Thermophysics, Chinese Academy of Sciences, Beijing 100190, China; University of Chinese Academy of Sciences, Beijing 100049, China.
| | - Xiulan Huai
- Institute of Engineering Thermophysics, Chinese Academy of Sciences, Beijing 100190, China; University of Chinese Academy of Sciences, Beijing 100049, China.
| | - Bin Liu
- Institute of Engineering Thermophysics, Chinese Academy of Sciences, Beijing 100190, China
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Abstract
Microplastics and antibiotics are two classes of emerging contaminants with proposed negative impacts to aqueous ecosystems. Adsorption of antibiotics on microplastics may result in their long-range transport and may cause compound combination effects. In this study, we investigated the adsorption of 5 antibiotics [sulfadiazine (SDZ), amoxicillin (AMX), tetracycline (TC), ciprofloxacin (CIP), and trimethoprim (TMP)] on 5 types of microplastics [polyethylene (PE), polystyrene (PS), polypropylene (PP), polyamide (PA), and polyvinyl chloride (PVC)] in the freshwater and seawater systems. Scanning Electron Microscope (SEM) and X-ray diffractometer (XRD) analysis revealed that microplastics have different surface characterizes and various degrees of crystalline. Adsorption isotherms demonstrated that PA had the strongest adsorption capacity for antibiotics with distribution coefficient (Kd) values ranged from 7.36 ± 0.257 to 756 ± 48.0 L kg-1 in the freshwater system, which can be attributed to its porous structure and hydrogen bonding. Relatively low adsorption capacity was observed on other four microplastics. The adsorption amounts of 5 antibiotics on PS, PE, PP, and PVC decreased in the order of CIP > AMX > TMP > SDZ > TC with Kf correlated positively with octanol-water partition coefficients (Log Kow). Comparing to freshwater system, adsorption capacity in seawater decreased significantly and no adsorption was observed for CIP and AMX. Our results indicated that commonly observed polyamide particles can serve as a carrier of antibiotics in the aquatic environment.
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Affiliation(s)
- Jia Li
- Key Laboratory of Coastal Environmental Process and Ecology Remediation, Yantai Institute of Coastal Zone Research, Chinese Academy of Sciences, Yantai 264003, China; University of Chinese Academy of Sciences, Beijing 100049, China
| | - Kaina Zhang
- School of Environment and Materials Engineering, YanTai University, Yantai 264003, China
| | - Hua Zhang
- Key Laboratory of Coastal Environmental Process and Ecology Remediation, Yantai Institute of Coastal Zone Research, Chinese Academy of Sciences, Yantai 264003, China.
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Yang L, Shi Y, Li J, Fang L, Luan T. Transformation of aqueous sulfonamides under horseradish peroxidase and characterization of sulfur dioxide extrusion products from sulfadiazine. Chemosphere 2018; 200:164-172. [PMID: 29477765 DOI: 10.1016/j.chemosphere.2018.01.118] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/04/2017] [Revised: 01/08/2018] [Accepted: 01/23/2018] [Indexed: 05/08/2023]
Abstract
The potential of horseradish peroxidase (HRP) to catalyze the removal of sulfonamides from water and the effects of different H2O2 and HRP concentrations were investigated. Six sulfonamides, each with a five- or six-membered heterocyclic group, including sulfamethoxazole (SMX), sulfathiazole (STZ), sulfapyridine (SPD), sulfadiazine (SDZ), sulfamerazine (SMR) and sulfamethoxypyridazine (SMP) were selected as target compounds. All sulfonamides exhibit a pseudo-first-order dependence of the concentration versus the reaction time. The decay rate (k, h-1) of the six sulfonamides spiked individually exhibit a trend following the order of STZ > SMP, SPD > SMR > SDZ » SMX. When spiked together, the coexistent sulfonamides might act as mediators for the enhancement of SMX removal and as competitors for the decreased removal of most sulfonamides. Moreover, six transformation products of SDZ are identified by the Thermo Scientific LTQ Orbitrap Elite technique. SDZ transformation involves two steps: one is the Smiles re-arrangement of the structure, and the other is oxidation and sulfur dioxide extrusion. This study is the first to report the removal dynamics of sulfonamides in HRP-catalyzed reactions and the identified products of SDZ.
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Affiliation(s)
- Lihua Yang
- Guangdong Provincial Key Laboratory of Marine Resources and Coastal Engineering, School of Marine Sciences, Sun Yat-Sen University, No. 135, Xingang Xi Road, Guangzhou 510275, China
| | - Yang Shi
- Guangdong Provincial Key Laboratory of Marine Resources and Coastal Engineering, School of Marine Sciences, Sun Yat-Sen University, No. 135, Xingang Xi Road, Guangzhou 510275, China
| | - Jinjin Li
- South China Sea Bio-Resource Exploitation and Utilization Collaborative Innovation Center, School of Life Sciences, Sun Yat-Sen University, No. 135, Xingang Xi Road, Guangzhou 510275, China
| | - Ling Fang
- South China Sea Bio-Resource Exploitation and Utilization Collaborative Innovation Center, School of Life Sciences, Sun Yat-Sen University, No. 135, Xingang Xi Road, Guangzhou 510275, China
| | - Tiangang Luan
- Guangdong Provincial Key Laboratory of Marine Resources and Coastal Engineering, School of Marine Sciences, Sun Yat-Sen University, No. 135, Xingang Xi Road, Guangzhou 510275, China; South China Sea Bio-Resource Exploitation and Utilization Collaborative Innovation Center, School of Life Sciences, Sun Yat-Sen University, No. 135, Xingang Xi Road, Guangzhou 510275, China.
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21
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Shen G, Zhang Y, Hu S, Zhang H, Yuan Z, Zhang W. Adsorption and degradation of sulfadiazine and sulfamethoxazole in an agricultural soil system under an anaerobic condition: Kinetics and environmental risks. Chemosphere 2018; 194:266-274. [PMID: 29216546 DOI: 10.1016/j.chemosphere.2017.11.175] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/22/2017] [Revised: 11/26/2017] [Accepted: 11/29/2017] [Indexed: 06/07/2023]
Abstract
Sulfonamides, one of the commonest antibiotics, were widely used on humans and livestock to control pathema and bacterial infections resulting in further environmental risks. The present study evaluated the adsorption and degradation of sulfadiazine (SDZ) and sulfamethoxazole (SMX) in an agricultural soil system under an anaerobic condition. Low sorption coefficients (Kd, 1.22 L kg-1 for SDZ and 1.23 L kg-1 for SMX) obtained from Freundlich isotherms experiment indicated that poor sorption of both antibiotics may pose a high risk to environment due to their high mobility and possibility of entering surface and ground water. Degradation occurred at a lower rate under the anaerobic environment, where both two antibiotics had higher persistence in sterile and non-sterile soils with degradation ratio <75% and DT50 > 20 d. Additionally, the addition of manure slightly increased degradation rates of SDZ and SMX, but there were no significant differences between single and repeated manure application at a later stage (p > 0.05), which suggested that the degradation was affected by both biotic and abiotic factors. Degradation rates would be slower at a higher concentration, indicating that degradation kinetics of SDZ and SMX were dependent on initial concentrations. During the degradation period, the antibiotics removal may change temperature, pH, sulfate and nitrate in soil, which suggested that the variation of antibiotics concentrations was related to the changes of soil physicochemical properties. An equation was proposed to elucidate the link between adsorption and degradation under different conditions, and to predict potential environmental risks of antibiotics.
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Affiliation(s)
- Genxiang Shen
- Shanghai Academy of Environmental Sciences, Shanghai 200233, China; State Environmental Protection Key Laboratory of Environmental Risk Assessment and Control on Chemical Process, School of Resource and Environmental Engineering, East China University of Science and Technology, Shanghai 200237, China.
| | - Yu Zhang
- State Environmental Protection Key Laboratory of Environmental Risk Assessment and Control on Chemical Process, School of Resource and Environmental Engineering, East China University of Science and Technology, Shanghai 200237, China
| | - Shuangqing Hu
- Shanghai Academy of Environmental Sciences, Shanghai 200233, China
| | - Hongchang Zhang
- Shanghai Academy of Environmental Sciences, Shanghai 200233, China
| | - Zhejun Yuan
- College of Environmental Science and Engineering, Donghua University, Shanghai 201620, China
| | - Wei Zhang
- State Environmental Protection Key Laboratory of Environmental Risk Assessment and Control on Chemical Process, School of Resource and Environmental Engineering, East China University of Science and Technology, Shanghai 200237, China.
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22
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Vione D, Fabbri D, Minella M, Canonica S. Effects of the antioxidant moieties of dissolved organic matter on triplet-sensitized phototransformation processes: Implications for the photochemical modeling of sulfadiazine. Water Res 2018; 128:38-48. [PMID: 29078069 DOI: 10.1016/j.watres.2017.10.020] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/12/2017] [Revised: 09/08/2017] [Accepted: 10/08/2017] [Indexed: 05/26/2023]
Abstract
Previous studies have shown that the photodegradation of some pollutants, induced by the excited triplet states of chromophoric dissolved organic matter (3CDOM*), can be inhibited by back-reduction processes carried out by phenolic antioxidants occurring in dissolved organic matter (DOM). Here, for the first time to our knowledge, we included such an inhibition effect into a photochemical model and applied the model predictions to sulfadiazine (SDZ), a sulfonamide antibiotic that occurs in surface waters in two forms, neutral HSDZ and anionic SDZ- (pKa = 6.5). The input parameters of the photochemical model were obtained by means of dedicated experiments, which showed that the inhibition effect was more marked for SDZ- than for HSDZ. Compared to the behavior of 2,4,6-trimethylphenol, which does not undergo antioxidant inhibition when irradiated in natural water samples, the back-reduction effect on the degradation of SDZ was proportional to the electron-donating capacity of the DOM. According to the model results, direct photolysis and OH reaction would account for the majority of both HSDZ and SDZ- photodegradation in waters having low dissolved organic carbon (DOC < 1 mgC L-1). With higher DOC values (>3-4 mgC L-1) and despite the back-reduction processes, the 3CDOM* reactions are expected to account for the majority of HSDZ phototransformation. In the case of SDZ- at high DOC, most of the photodegradation would be accounted for by direct photolysis. The relative importance of the triplet-sensitized phototransformation of both SDZ- and (most importantly) HSDZ is expected to increase with increasing DOC, even in the presence of back reduction. An increase in water pH, favoring the occurrence of SDZ- with respect to HSDZ, would enhance direct photolysis at the expense of triplet sensitization. SDZ should be fairly photolabile under summertime sunlight, with predicted half-lives ranging from a few days to a couple of months depending on water conditions.
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Affiliation(s)
- Davide Vione
- Dipartimento di Chimica, Università degli Studi di Torino, Via P. Giuria 5, I-10125, Turin, Italy; Università di Torino, Centro Interdipartimentale NatRisk, Largo Paolo Braccini 2, I-10095, Grugliasco (TO), Italy.
| | - Debora Fabbri
- Dipartimento di Chimica, Università degli Studi di Torino, Via P. Giuria 5, I-10125, Turin, Italy
| | - Marco Minella
- Dipartimento di Chimica, Università degli Studi di Torino, Via P. Giuria 5, I-10125, Turin, Italy
| | - Silvio Canonica
- Eawag, Swiss Federal Institute of Aquatic Science and Technology, Ueberlandstrasse 133, CH-8600, Dübendorf, Switzerland.
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23
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Zhang L, Wang Y, Jin S, Lu Q, Ji J. Adsorption isotherm, kinetic and mechanism of expanded graphite for sulfadiazine antibiotics removal from aqueous solutions. Environ Technol 2017; 38:2629-2638. [PMID: 27966390 DOI: 10.1080/09593330.2016.1272637] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/06/2016] [Accepted: 12/10/2016] [Indexed: 06/06/2023]
Abstract
The adsorption of sulfadiazine from water by expanded graphite (EG), a low cost and environmental-friendly adsorbent, was investigated. Several adsorption parameters (including the initial sulfadiazine concentration, contact time, pH of solution, ionic strength and temperature) were studied. Results of equilibrium experiments indicated that adsorption of sulfadiazine onto EG were better described by the Langmuir and Tempkin models than by the Freundlich model. The maximum adsorption capacity is calculated to be 16.586 mg/g at 298 K. The kinetic data were analyzed by pseudo-first-order, pseudo-second-order and intraparticle models. The results indicated that the adsorption process followed pseudo-second-order kinetics and may be controlled by two steps. Moreover, the pH significantly influenced the adsorption process, with the relatively high adsorption capacity at pH 2-10. The electrostatic and hydrophobic interactions are manifested to be two main mechanisms for sulfadiazine adsorption of EG. Meanwhile, the ionic concentration of Cl- slightly impacted the removal of sulfadiazine. Results of thermodynamics analysis showed spontaneous and exothermic nature of sulfadiazine adsorption on EG. In addition, regeneration experiments imply that the saturated EG could be reused for sulfadiazine removal by immersing sodium hydroxide.
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Affiliation(s)
- Ling Zhang
- a School of Environmental and Chemical Engineering , Shanghai University , Shanghai , People's Republic of China
| | - Yong Wang
- a School of Environmental and Chemical Engineering , Shanghai University , Shanghai , People's Republic of China
| | - SuWan Jin
- a School of Environmental and Chemical Engineering , Shanghai University , Shanghai , People's Republic of China
| | - QunZan Lu
- a School of Environmental and Chemical Engineering , Shanghai University , Shanghai , People's Republic of China
| | - Jiang Ji
- b XiaMen JiangTian Membrane Biotechnology Ltd , Xiamen , People's Republic of China
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Graves RA, Phan KV, Bostanian LA, Mandal TK, Pramar YV. Physicochemical Stability of an Oral Suspension of Trimethoprim 20 mg/mL in Combination with Sulfadiazine 200 mg/mL in PCCA Base SuspendIt. Int J Pharm Compd 2017; 21:430-435. [PMID: 29216620] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
Trimethoprim is a diaminopyrimidine antibacterial agent that, like sulfonamides, inhibits bacterial folic acid synthesis, but at a different stage in the metabolic pathway. It has a similar spectrum of activity to the sulfonamides and is given by mouth or by injection, either alone or in conjunction with a sulfonamide, such as sulfadiazine. Sulfadiazine is a bacteriostatic antibacterial agent that interferes with folic acid synthesis in susceptible bacteria. The combination of the two drugs produces a synergistic effect against both Gram-positive and Gram-negative aerobic bacteria, by inhibiting enzymes in the folic acid pathways, which in turn inhibits bacterial thymidine synthesis. There are no published studies of the stability of the combination of trimethoprim and sulfadiazine in a liquid dosage form. An extemporaneously compounded suspension from pure drug powders or commercial tablets would provide an alternative option to meet unique patient needs. The purpose of this study was to determine the physicochemical stability of trimethoprim combined with sulfadiazine in PCCA base SuspendIt. PCCA base SuspendIt is a sugar-free, paraben-free, dye-free, and gluten-free thixotropic vehicle containing a natural sweetener obtained from the monk fruit. It thickens upon standing to minimize settling of any insoluble drug particles and becomes fluid upon shaking to allow convenient pouring during administration to the patient. A robust stability-indicating high-performance liquid chromatographic assay for the simultaneous determination of trimethoprim and sulfadiazine in SuspendIt was developed and validated. This assay was used to determine the chemical stability of both drugs in SuspendIt. Samples were prepared and stored under three different temperature conditions (5°C, 25°C, 40°C), and assayed using the high-performance liquid chromatographic assay at pre-determined intervals over an extended period of time as follows: 0, 7, 14, 30, 45, 60, 91, 120, and 182 days at each designated temperature. Physical data such as pH, viscosity, appearance, and average particle size were also monitored. The study showed that drug concentration did not go below 90% of the label claim (initial drug concentration) at room temperature and in the refrigerator. The pH values also did not change significantly. There was some variability in viscosity and average particle size. This study demonstrates that trimethoprim and sulfadiazine are physically and chemically stable in combination in SuspendIt for 182 days at room temperature and in the refrigerator, thus providing a viable, compounded alternative for both drugs in a liquid dosage form, with an extended beyond-use-date to meet patient needs.
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Affiliation(s)
- Richard A Graves
- College of Pharmacy, Xavier University of Louisiana, New Orleans, Louisiana
| | - Kelly V Phan
- College of Pharmacy, Xavier University of Louisiana, New Orleans, Louisiana
| | - Levon A Bostanian
- College of Pharmacy, Xavier University of Louisiana, New Orleans, Louisiana
| | - Tarun K Mandal
- College of Pharmacy, Xavier University of Louisiana, New Orleans, Louisiana
| | - Yashoda V Pramar
- College of Pharmacy, Xavier University of Louisiana, New Orleans, Louisiana.
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25
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Zhang M, Engelhardt I, Šimůnek J, Bradford SA, Kasel D, Berns AE, Vereecken H, Klumpp E. Co-transport of chlordecone and sulfadiazine in the presence of functionalized multi-walled carbon nanotubes in soils. Environ Pollut 2017; 221:470-479. [PMID: 28012669 DOI: 10.1016/j.envpol.2016.12.018] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/22/2016] [Revised: 11/06/2016] [Accepted: 12/12/2016] [Indexed: 06/06/2023]
Abstract
Batch and saturated soil column experiments were conducted to investigate sorption and mobility of two 14C-labeled contaminants, the hydrophobic chlordecone (CLD) and the sulfadiazine (SDZ), in the absence or presence of functionalized multi-walled carbon nanotubes (MWCNTs). The transport behaviors of CLD, SDZ, and MWCNTs were studied at environmentally relevant concentrations (0.1-10 mg L-1) and they were applied in the column studies at different times. The breakthrough curves and retention profiles were simulated using a numerical model that accounted for the advective-dispersive transport of all compounds, attachment/detachment of MWCNTs, equilibrium and kinetic sorption of contaminants, and co-transport of contaminants with MWCNTs. The experimental results indicated that the presence of mobile MWCNTs facilitated remobilization of previously deposited CLD and its co-transport into deeper soil layers, while retained MWCNTs enhanced SDZ deposition in the topsoil layers due to the increased adsorption capacity of the soil. The modeling results then demonstrated that the mobility of engineered nanoparticles (ENPs) in the environment and the high affinity and entrapment of contaminants to ENPs were the main reasons for ENP-facilitated contaminant transport. On the other hand, immobile MWCNTs had a less significant impact on the contaminant transport, even though they were still able to enhance the adsorption capacity of the soil.
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Affiliation(s)
- Miaoyue Zhang
- Agrosphere Institute (IBG-3), Forschungszentrum Jülich GmbH, 52425 Jülich, Germany; Institute for Environmental Research (Biology V), RWTH Aachen University, Worringerweg 1, 52074 Aachen, Germany.
| | - Irina Engelhardt
- Agrosphere Institute (IBG-3), Forschungszentrum Jülich GmbH, 52425 Jülich, Germany; TU Freiberg, Department of Hydrogeology, 09596 Freiberg, Germany
| | - Jirka Šimůnek
- Department of Environmental Sciences, University of California Riverside, Riverside, CA 92521, USA
| | - Scott A Bradford
- United States Department of Agriculture, Agricultural Research Service, U. S. Salinity Laboratory, Riverside, CA 92507, USA
| | - Daniela Kasel
- Agrosphere Institute (IBG-3), Forschungszentrum Jülich GmbH, 52425 Jülich, Germany
| | - Anne E Berns
- Agrosphere Institute (IBG-3), Forschungszentrum Jülich GmbH, 52425 Jülich, Germany
| | - Harry Vereecken
- Agrosphere Institute (IBG-3), Forschungszentrum Jülich GmbH, 52425 Jülich, Germany
| | - Erwin Klumpp
- Agrosphere Institute (IBG-3), Forschungszentrum Jülich GmbH, 52425 Jülich, Germany
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26
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Yang JF, Yang LM, Ying GG, Liu CB, Zheng LY, Luo SL. Reaction of antibiotic sulfadiazine with manganese dioxide in aqueous phase: Kinetics, pathways and toxicity assessment. J Environ Sci Health A Tox Hazard Subst Environ Eng 2017; 52:135-143. [PMID: 27768526 DOI: 10.1080/10934529.2016.1237138] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
Sulfonamide antibiotics are often detected in terrestrial and aquatic environment, but little is known about abiotic degradation of these antibiotics. In the present study, the degradation of the sulfonamide antibiotic sulfadiazine by a synthesized δ-MnO2 was investigated. The initial reaction rate of sulfadiazine oxidized by manganese dioxide increased as the solution pH decreased by weakening electrostatic attraction between sulfadiazine and MnO2 and enhancing the reduction potential of MnO2. The presence of metal ions (Mn2+, Na+ and Ca2+), especially Mn2+, decreased the initial reaction rate by competitively adsorbing and reacting with MnO2. Two different products were identified during the reaction of sulfadiazine with MnO2 and the transformation of parent compound started with the formation of sulfadiazine radicals. Furthermore, toxicity assay results showed that the toxicity of products produced by bacteria decreased with elapse of reaction time. Results from the present study indicate that manganese dioxides in environmental matrix could be helpful in dissipation of sulfadiazine released into the environment.
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Affiliation(s)
- Ji-Feng Yang
- a State Key Laboratory of Chemo/Biosensing and Chemometrics, Hunan University , Changsha , China
- b Chemistry and Chemical Engineering College, Hunan University of Arts and Science , Changde , China
- c State Key Laboratory of Organic Geochemistry, Guangzhou Institute of Geochemistry, Chinese Academy of Sciences , Guangzhou , China
| | - Li-Ming Yang
- a State Key Laboratory of Chemo/Biosensing and Chemometrics, Hunan University , Changsha , China
| | - Guang-Guo Ying
- c State Key Laboratory of Organic Geochemistry, Guangzhou Institute of Geochemistry, Chinese Academy of Sciences , Guangzhou , China
| | - Cheng-Bin Liu
- a State Key Laboratory of Chemo/Biosensing and Chemometrics, Hunan University , Changsha , China
| | - Li-Ying Zheng
- b Chemistry and Chemical Engineering College, Hunan University of Arts and Science , Changde , China
| | - Sheng-Lian Luo
- a State Key Laboratory of Chemo/Biosensing and Chemometrics, Hunan University , Changsha , China
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27
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Deng Y, Mao Y, Li B, Yang C, Zhang T. Aerobic Degradation of Sulfadiazine by Arthrobacter spp.: Kinetics, Pathways, and Genomic Characterization. Environ Sci Technol 2016; 50:9566-9575. [PMID: 27477918 DOI: 10.1021/acs.est.6b02231] [Citation(s) in RCA: 100] [Impact Index Per Article: 12.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
Two aerobic sulfadiazine (SDZ) degrading bacterial strains, D2 and D4, affiliated with the genus Arthrobacter, were isolated from SDZ-enriched activated sludge. The degradation of SDZ by the two isolates followed first-order decay kinetics. The half-life time of complete SDZ degradation was 11.3 h for strain D2 and 46.4 h for strain D4. Degradation kinetic changed from nongrowth to growth-linked when glucose was introduced as the cosubstrate, and accelerated biodegradation rate was observed after the adaption period. Both isolates could degrade SDZ into 12 biodegradation products via 3 parallel pathways, of which 2-amino-4-hydroxypyrimidine was detected as the principal intermediate product toward the pyrimidine ring cleavage. Compared with five Arthrobacter strains reported previously, D2 and D4 were the only Arthrobacter strains which could degrade SDZ as the sole carbon source. The draft genomes of D2 and D4, with the same completeness of 99.7%, were compared to other genomes of related species. Overall, these two isolates shared high genomic similarities with the s-triazine-degrading Arthrobacter sp. AK-YN10 and the sulfonamide-degrading bacteria Microbacterium sp. C448. In addition, the two genomes contained a few significant regions of difference which may carry the functional genes involved in sulfonamide degradation.
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Affiliation(s)
- Yu Deng
- Environmental Biotechnology Laboratory, Department of Civil Engineering, The University of Hong Kong , Pokfulam Road, Hong Kong, China
| | - Yanping Mao
- Environmental Biotechnology Laboratory, Department of Civil Engineering, The University of Hong Kong , Pokfulam Road, Hong Kong, China
| | - Bing Li
- Environmental Biotechnology Laboratory, Department of Civil Engineering, The University of Hong Kong , Pokfulam Road, Hong Kong, China
| | - Chao Yang
- Environmental Biotechnology Laboratory, Department of Civil Engineering, The University of Hong Kong , Pokfulam Road, Hong Kong, China
| | - Tong Zhang
- Environmental Biotechnology Laboratory, Department of Civil Engineering, The University of Hong Kong , Pokfulam Road, Hong Kong, China
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28
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Shi H, Wang XC, Li Q, Jiang S. Degradation of typical antibiotics during human feces aerobic composting under different temperatures. Environ Sci Pollut Res Int 2016; 23:15076-15087. [PMID: 27083910 DOI: 10.1007/s11356-016-6664-7] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/05/2015] [Accepted: 04/10/2016] [Indexed: 06/05/2023]
Abstract
Four typical antibiotics were added to human feces for aerobic composting using batch reactors with sawdust as the bulk matrix. Under three composting temperatures (room temperature, 35 ± 2 °C and 55 ± 2 °C), decreases in the extractable concentrations of antibiotics in the compost were monitored for 20 days. As a result, the removals of extractable tetracycline and chlortetracycline were found to be more temperature-dependent than the removals of sulfadiazine and ciprofloxacin. However, more than 90 % of all of the extractable antibiotics were removed at 55 ± 2 °C. Three specific experiments were further conducted to identify the possible actions for antibiotic removal, including self-degradation in aqueous solution, composting with a moist sterile sawdust matrix without adding feces and composting with human feces and moist sterile sawdust. As a result, it was found that the removal of tetracycline and chlortetracycline was mainly due to chemical degradation in water, whereas the removal of sulfadiazine was mainly attributed to adsorption onto sawdust particles. The microbial activity of compost varied with temperature to a certain extent, but the differences were insignificant among different antibiotics. Although microbial action is important for organic matter decomposition, its contribution to antibiotic degradation was small for the investigated antibiotics, except for ciprofloxacin, which was degraded by up to 20 % due to microbial action.
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Affiliation(s)
- Honglei Shi
- International Science & Technology Cooperation Center for Urban Alternative Water Resources Development; Key Lab of Northwest Water Resource, Environment and Ecology, MOE; Engineering Technology Research Center for Wastewater Treatment and Reuse, Xi'an, Shaanxi Province, China
- Key Lab of Environmental Engineering, Xi'an, Shaanxi Province, China
- Xi'an University of Architecture and Technology, No. 13, Yanta Road, Xi'an, 710055, China
| | - Xiaochang C Wang
- International Science & Technology Cooperation Center for Urban Alternative Water Resources Development; Key Lab of Northwest Water Resource, Environment and Ecology, MOE; Engineering Technology Research Center for Wastewater Treatment and Reuse, Xi'an, Shaanxi Province, China.
- Key Lab of Environmental Engineering, Xi'an, Shaanxi Province, China.
- Xi'an University of Architecture and Technology, No. 13, Yanta Road, Xi'an, 710055, China.
| | - Qian Li
- International Science & Technology Cooperation Center for Urban Alternative Water Resources Development; Key Lab of Northwest Water Resource, Environment and Ecology, MOE; Engineering Technology Research Center for Wastewater Treatment and Reuse, Xi'an, Shaanxi Province, China
- Key Lab of Environmental Engineering, Xi'an, Shaanxi Province, China
- Xi'an University of Architecture and Technology, No. 13, Yanta Road, Xi'an, 710055, China
| | - Shanqing Jiang
- International Science & Technology Cooperation Center for Urban Alternative Water Resources Development; Key Lab of Northwest Water Resource, Environment and Ecology, MOE; Engineering Technology Research Center for Wastewater Treatment and Reuse, Xi'an, Shaanxi Province, China
- Key Lab of Environmental Engineering, Xi'an, Shaanxi Province, China
- Xi'an University of Architecture and Technology, No. 13, Yanta Road, Xi'an, 710055, China
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29
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Feng Y, Wu D, Deng Y, Zhang T, Shih K. Sulfate Radical-Mediated Degradation of Sulfadiazine by CuFeO2 Rhombohedral Crystal-Catalyzed Peroxymonosulfate: Synergistic Effects and Mechanisms. Environ Sci Technol 2016; 50:3119-3127. [PMID: 26906407 DOI: 10.1021/acs.est.5b05974] [Citation(s) in RCA: 248] [Impact Index Per Article: 31.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
Copper-iron bimetallic oxides have shown great potential for powerful radical production by activating peroxides. In this work, CuFeO2 rhombohedral crystals (RCs) were synthesized and used as heterogeneous catalysts for peroxymonosulfate (PMS) activation under various conditions. Sulfadiazine, a widely used veterinary sulfonamide, was used as a target pollutant to evaluate the efficiency of this combination. The results showed that of all the catalysts tested, the CuFeO2 RCs had the greatest reactivity. Under conditions of 0.1 g L(-1) CuFeO2 RCs and 33.0 μM PMS, the nearly complete degradation of sulfadiazine occurred within 24 min. A synergistic catalytic effect was found between solid Cu(I) and Fe(III), probably due to the accelerated reduction of Fe(III). The two activation stages that produced different radicals (hydroxyl radicals followed by sulfate radicals) existed when solid Cu(I) was used as the catalyst. The CuFeO2 RCs had a higher PMS utilization efficiency than CuFe2O4, probably because the Cu(I)-promoted reduction of solid Fe(III). A total of 10 products were identified, and their evolution was explored. On the basis of the evidence of oxidative product formation, we proposed four possible pathways of sulfadiazine degradation.
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Affiliation(s)
- Yong Feng
- Department of Civil Engineering, The University of Hong Kong , Pokfulam Road, Hong Kong, People's Republic of China
| | - Deli Wu
- State Key Laboratory of Pollution Control and Resources Reuse, School of Environmental Science & Engineering, Tongji University , Shanghai 200092, People's Republic of China
| | - Yu Deng
- Department of Civil Engineering, The University of Hong Kong , Pokfulam Road, Hong Kong, People's Republic of China
| | - Tong Zhang
- Department of Civil Engineering, The University of Hong Kong , Pokfulam Road, Hong Kong, People's Republic of China
| | - Kaimin Shih
- Department of Civil Engineering, The University of Hong Kong , Pokfulam Road, Hong Kong, People's Republic of China
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30
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Xu Y, Yu W, Ma Q, Zhou H. Interactive effects of sulfadiazine and Cu(II) on their sorption and desorption on two soils with different characteristics. Chemosphere 2015; 138:701-707. [PMID: 26247413 DOI: 10.1016/j.chemosphere.2015.07.049] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/01/2015] [Revised: 07/16/2015] [Accepted: 07/19/2015] [Indexed: 06/04/2023]
Abstract
Antibiotics and heavy metals often coexist in soils due to land application of animal wastes and other sources of inputs. The aim of this study is to evaluate the interaction of Cu(II) and sulfadiazine (SDZ) regarding to their sorption and desorption on Brown soil (BS, luvisols) and Red soil (RS, Udic Ferrosols) using batch experiments. The presence of Cu(II) significantly enhanced sorption of SDZ on BS at pH>5.0, and this trend increased with increasing pH, which was mainly ascribed to the formation of ternary complexes of Cu-SDZ-soil and/or SDZ-Cu-soil. In contrast, Cu(II) only slightly increased SDZ sorption on RS at pH<5.0 due to the decrease of equilibrium solution pH, whereas it hardly affected SDZ sorption at pH>5.0 because RS had high oxides contents and low affinity for Cu(II). In addition, Cu(II) inhibited SDZ desorption from BS but promoted SDZ desorption from RS, which was related to their different sorption mechanisms. The presence of SDZ exerted no significant effect on the sorption of Cu(II) on the two soils at pH<6.5 because of its low sorption coefficients (Kd), while slightly decreased Cu(II) sorption at pH>6.5 by forming water-soluble complexes. Furthermore, SDZ had little effect on Cu(II) desorption from the two soils at natural pH. These results indicate that soil characteristics strongly influence the interactions of Cu(II) and SDZ on their sorption and desorption on soils.
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Affiliation(s)
- Yonggang Xu
- Institute of Applied Ecology, Chinese Academy of Sciences, Shenyang 110016, China
| | - Wantai Yu
- Institute of Applied Ecology, Chinese Academy of Sciences, Shenyang 110016, China.
| | - Qiang Ma
- Institute of Applied Ecology, Chinese Academy of Sciences, Shenyang 110016, China
| | - Hua Zhou
- Institute of Applied Ecology, Chinese Academy of Sciences, Shenyang 110016, China
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Wenk J, Aeschbacher M, Sander M, von Gunten U, Canonica S. Photosensitizing and Inhibitory Effects of Ozonated Dissolved Organic Matter on Triplet-Induced Contaminant Transformation. Environ Sci Technol 2015; 49:8541-9. [PMID: 26091366 DOI: 10.1021/acs.est.5b02221] [Citation(s) in RCA: 62] [Impact Index Per Article: 6.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/26/2023]
Abstract
Dissolved organic matter (DOM) is both a promoter and an inhibitor of triplet-induced organic contaminant oxidation. This dual role was systematically investigated through photochemical experiments with three types of DOM of terrestrial and aquatic origins that were preoxidized to varying extents by ozonation. The inhibitory effect of DOM was assessed by determining the 4-carboxybenzophenone photosensitized transformation rate constants of two sulfonamide antibiotics (sulfamethoxazole and sulfadiazine) in the presence of untreated or preoxidized DOM. The inhibitory effect decreased with the increasing extent of DOM preoxidation, and it was correlated to the loss of phenolic antioxidant moieties, as quantified electrochemically, and to the loss of DOM ultraviolet absorbance. The triplet photosensitizing ability of preoxidized DOM was determined using the conversion of the probe compound 2,4,6-trimethylphenol (TMP), which is unaffected by DOM inhibition effects. The DOM photosensitized transformation rate constants of TMP decreased with increasing DOM preoxidation and were correlated to the concomitant loss of chromophores (i.e., photosensitizing moieties). The combined effects of DOM preoxidation on the inhibiting and photosensitizing properties were assessed by phototransformation experiments of the sulfonamides in DOM-containing solutions. At low extents of DOM preoxidation, the sulfonamide phototransformation rate constants remained either unchanged or slightly increased, indicating that the removal of antioxidant moieties had larger effects than the loss of photosensitizing moieties. At higher extents of DOM preoxidation, transformation rates declined, mainly reflecting the destruction of photosensitizing moieties.
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Affiliation(s)
- Jannis Wenk
- †Eawag, Swiss Federal Institute of Aquatic Science and Technology, Überlandstrasse 133, CH-8600 Dübendorf, Switzerland
- ‡Institute of Biogeochemistry and Pollutant Dynamics, ETH Zürich, Universitätstrasse 16, CH-8092 Zürich, Switzerland
| | - Michael Aeschbacher
- ‡Institute of Biogeochemistry and Pollutant Dynamics, ETH Zürich, Universitätstrasse 16, CH-8092 Zürich, Switzerland
| | - Michael Sander
- ‡Institute of Biogeochemistry and Pollutant Dynamics, ETH Zürich, Universitätstrasse 16, CH-8092 Zürich, Switzerland
| | - Urs von Gunten
- †Eawag, Swiss Federal Institute of Aquatic Science and Technology, Überlandstrasse 133, CH-8600 Dübendorf, Switzerland
- ‡Institute of Biogeochemistry and Pollutant Dynamics, ETH Zürich, Universitätstrasse 16, CH-8092 Zürich, Switzerland
- §School of Architecture, Civil and Environmental Engineering (ENAC), Ecole Polytechnique Fédérale de Lausanne (EPFL), CH-1015 Lausanne, Switzerland
| | - Silvio Canonica
- †Eawag, Swiss Federal Institute of Aquatic Science and Technology, Überlandstrasse 133, CH-8600 Dübendorf, Switzerland
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Li Y, Wei X, Chen J, Xie H, Zhang YN. Photodegradation mechanism of sulfonamides with excited triplet state dissolved organic matter: a case of sulfadiazine with 4-carboxybenzophenone as a proxy. J Hazard Mater 2015; 290:9-15. [PMID: 25731147 DOI: 10.1016/j.jhazmat.2015.02.040] [Citation(s) in RCA: 48] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/16/2014] [Revised: 02/06/2015] [Accepted: 02/13/2015] [Indexed: 06/04/2023]
Abstract
Excited triplet states of dissolved organic matter ((3)DOM*) are important players for photodegradation sulfonamide antibiotics (SAs) in sunlit natural waters. However, the triplet-mediated reaction mechanism was poorly understood. In this study, we investigated the reaction adopting sulfadiazine as a representative SA and 4-carboxybenzophenone (CBBP)as a proxy of DOM. Results showed that the excited triplet state of CBBP ((3)CBBP*) is responsible for the photodegradation of sulfadiazine. The reaction of (3)CBBP* with substructure model compounds verified there are two reaction sites (amino-or sulfonyl-N atoms) of sulfadiazine. Density functional theory calculations were performed, which unveiled that electrons transfer from the N reaction sites to the carbonyl oxygen atom of (3)CBBP* moiety, followed by proton transfers, leading to the formation of sulfadiazine radicals. Laser flash photolysis experiments were performed to confirm the mechanism. Thus, this study identified that the photodegradation mechanism of SAs initiated by (3)DOM*, which is important for understanding the photochemical fate, predicting the photoproducts, and assessing the ecological risks of SAs in the aquatic environment.
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Affiliation(s)
- Yingjie Li
- Key Laboratory of Industrial Ecology and Environmental Engineering (MOE), School of Environmental Science and Technology, Dalian University of Technology, Dalian 116024, China
| | - Xiaoxuan Wei
- Key Laboratory of Industrial Ecology and Environmental Engineering (MOE), School of Environmental Science and Technology, Dalian University of Technology, Dalian 116024, China
| | - Jingwen Chen
- Key Laboratory of Industrial Ecology and Environmental Engineering (MOE), School of Environmental Science and Technology, Dalian University of Technology, Dalian 116024, China.
| | - Hongbin Xie
- Key Laboratory of Industrial Ecology and Environmental Engineering (MOE), School of Environmental Science and Technology, Dalian University of Technology, Dalian 116024, China
| | - Ya-nan Zhang
- Key Laboratory of Industrial Ecology and Environmental Engineering (MOE), School of Environmental Science and Technology, Dalian University of Technology, Dalian 116024, China
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Engelhardt I, Sittig S, Šimůnek J, Groeneweg J, Pütz T, Vereecken H. Fate of the antibiotic sulfadiazine in natural soils: Experimental and numerical investigations. J Contam Hydrol 2015; 177-178:30-42. [PMID: 25835544 DOI: 10.1016/j.jconhyd.2015.02.006] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/01/2014] [Revised: 02/12/2015] [Accepted: 02/25/2015] [Indexed: 06/04/2023]
Abstract
Based on small-scale laboratory and field-scale lysimeter experiments, the sorption and biodegradation of sulfonamide sulfadiazine (SDZ) were investigated in unsaturated sandy and silty-clay soils. Sorption and biodegradation were low in the laboratory, while the highest leaching rates were observed when SDZ was mixed with manure. The leaching rate decreased when SDZ was mixed with pure water, and was smallest with the highest SDZ concentrations. In the laboratory, three transformation products (TPs) developed after an initial lag phase. However, the amount of TPs was different for different mixing-scenarios. The TP 2-aminopyrimidine was not observed in the laboratory, but was the most prevalent TP at the field scale. Sorption was within the same range at the laboratory and field scales. However, distinctive differences occurred with respect to biodegradation, which was higher in the field lysimeters than at the laboratory scale. While the silty-clay soil favored sorption of SDZ, the sandy, and thus highly permeable, soil was characterized by short half-lives and thus a quick biodegradation of SDZ. For 2-aminopyrimidine, half-lives of only a few days were observed. Increased field-scale biodegradation in the sandy soil resulted from a higher water and air permeability that enhanced oxygen transport and limited oxygen depletion. Furthermore, low pH was more important than the organic matter and clay content for increasing the biodegradation of SDZ. A numerical analysis of breakthrough curves of bromide, SDZ, and its TPs showed that preferential flow pathways strongly affected the solute transport within shallow parts of the soil profile at the field scale. However, this effect was reduced in deeper parts of the soil profile. Due to high field-scale biodegradation in several layers of both soils, neither SDZ nor 2-aminopyrimidine was detected in the discharge of the lysimeter at a depth of 1m. Synthetic 50 year long simulations, which considered the application of manure with SDZ for general agricultural practices in Germany and humid climate conditions, showed that the concentration of SDZ decreased below 0.1 μg/L in both soils below the depth of 50 cm.
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Affiliation(s)
- Irina Engelhardt
- Forschungszentrum Jülich, Institute of Bio- and Geosciences, 52425 Jülich, Germany.
| | - Stephan Sittig
- Forschungszentrum Jülich, Institute of Bio- and Geosciences, 52425 Jülich, Germany; Knoell Consult GmbH, Marie-Curie-Straße 8, 51377 Leverkusen, Germany
| | - Jirka Šimůnek
- University of California Riverside, Department of Environmental Sciences, Riverside, CA, USA
| | - Joost Groeneweg
- Forschungszentrum Jülich, Institute of Bio- and Geosciences, 52425 Jülich, Germany
| | - Thomas Pütz
- Forschungszentrum Jülich, Institute of Bio- and Geosciences, 52425 Jülich, Germany
| | - Harry Vereecken
- Forschungszentrum Jülich, Institute of Bio- and Geosciences, 52425 Jülich, Germany
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Jiang M, Yang W, Zhang Z, Yang Z, Wang Y. Adsorption of three pharmaceuticals on two magnetic ion-exchange resins. J Environ Sci (China) 2015; 31:226-34. [PMID: 25968278 DOI: 10.1016/j.jes.2014.09.035] [Citation(s) in RCA: 48] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2014] [Revised: 09/16/2014] [Accepted: 09/19/2014] [Indexed: 05/17/2023]
Abstract
The presence of pharmaceuticals in aquatic environments poses potential risks to the ecology and human health. This study investigated the removal of three widely detected and abundant pharmaceuticals, namely, ibuprofen (IBU), diclofenac (DC), and sulfadiazine (SDZ), by two magnetic ion-exchange resins. The adsorption kinetics of the three adsorbates onto both resins was relatively fast and followed pseudo-second-order kinetics. Despite the different pore structures of the two resins, similar adsorption patterns of DC and SDZ were observed, implying the existence of an ion-exchange mechanism. IBU demonstrated a combination of interactions during the adsorption process. These interactions were dependent on the specific surface area and functional groups of the resin. The adsorption isotherm fittings verified the differences in the behavior of the three pharmaceuticals on the two magnetic ion-exchange resins. The presence of Cl- and SO4(2-) suppressed the adsorption amount, but with different inhibition levels for different adsorbates. This work facilitates the understanding of the adsorption behavior and mechanism of pharmaceuticals on magnetic ion-exchange resins. The results will expand the application of magnetic ion-exchange resins to the removal of pharmaceuticals in waters.
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Affiliation(s)
- Miao Jiang
- School of Chemistry and Materials Science, Jiangsu Provincial Key Laboratory of Materials Cycling and Pollution Control, Nanjing Normal University, Nanjing 210046, China.
| | - Weiben Yang
- School of Chemistry and Materials Science, Jiangsu Provincial Key Laboratory of Materials Cycling and Pollution Control, Nanjing Normal University, Nanjing 210046, China.
| | - Ziwei Zhang
- School of Chemistry and Materials Science, Jiangsu Provincial Key Laboratory of Materials Cycling and Pollution Control, Nanjing Normal University, Nanjing 210046, China
| | - Zhen Yang
- School of Chemistry and Materials Science, Jiangsu Provincial Key Laboratory of Materials Cycling and Pollution Control, Nanjing Normal University, Nanjing 210046, China
| | - Yuping Wang
- School of Chemistry and Materials Science, Jiangsu Provincial Key Laboratory of Materials Cycling and Pollution Control, Nanjing Normal University, Nanjing 210046, China
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Long X, Zhang Z, Han S, Tang M, Zhou J, Zhang J, Xue Z, Li Y, Zhang R, Deng L, Dong A. Structural mediation on polycation nanoparticles by sulfadiazine to enhance DNA transfection efficiency and reduce toxicity. ACS Appl Mater Interfaces 2015; 7:7542-7551. [PMID: 25801088 DOI: 10.1021/am508847j] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
Reducing the toxicity while maintaining high transfection efficiency is an important issue for cationic polymers as gene carriers in clinical application. In this paper, a new zwitterionic copolymer, polycaprolactone-g-poly(dimethylaminoethyl methyacrylate-co-sulfadiazine methacrylate) (PC-SDZ) with unique pH-sensitivity, was designed and prepared. The incorporation of sulfadiazine into poly(dimethylaminoethyl methacrylate) (PDMAEMA) chains successfully mediates the surface properties including compacter shell structure, lower density of positive charges, stronger proton buffer capability, and enhanced hydrophobicity, which lead to reduction in toxicity and enhancements in stability, cellular uptake, endosome escape, and transfection efficiency for the PC-SDZ2 nanoparticles (NPs)/DNA complexes. Excellent transfection efficiency at the optimal N/P ratio of 10 was observed for PC-SDZ2 NPs/DNA complexes, which was higher than that of the commercial reagent-branched polyethylenimine (PEI). The cytotoxicity was evaluated by CCK8 measurement, and the results showed significant reduction in cytotoxicity even at high concentration of complexes after sulfadiazine modification. Therefore, this work may demonstrate a new way of structural mediation of cationic polymer carriers for gene delivery with high efficiency and low toxicity.
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Affiliation(s)
- Xingwen Long
- †Department of Polymer Science and Technology and Key Laboratory of Systems Bioengineering of the Ministry of Education; Department of Polymer Science and Technology, School of Chemical Engineering and Technology, Tianjin University, Tianjin 300072, China
| | - Zhihui Zhang
- ∥Research Center of Basic Medical Science and Department of Immunology, Basic Medical College; Key Laboratory of Immune Microenvironment and Diseases, Ministry of Education of China; Key Laboratory of Hormones and Development (Ministry of Health), Metabolic Diseases Hospital and Tianjin Institute of Endocrinology, Tianjin Medical University, Tianjin 300070, China
| | - Shangcong Han
- †Department of Polymer Science and Technology and Key Laboratory of Systems Bioengineering of the Ministry of Education; Department of Polymer Science and Technology, School of Chemical Engineering and Technology, Tianjin University, Tianjin 300072, China
| | - Minjie Tang
- †Department of Polymer Science and Technology and Key Laboratory of Systems Bioengineering of the Ministry of Education; Department of Polymer Science and Technology, School of Chemical Engineering and Technology, Tianjin University, Tianjin 300072, China
| | - Junhui Zhou
- †Department of Polymer Science and Technology and Key Laboratory of Systems Bioengineering of the Ministry of Education; Department of Polymer Science and Technology, School of Chemical Engineering and Technology, Tianjin University, Tianjin 300072, China
| | - Jianhua Zhang
- †Department of Polymer Science and Technology and Key Laboratory of Systems Bioengineering of the Ministry of Education; Department of Polymer Science and Technology, School of Chemical Engineering and Technology, Tianjin University, Tianjin 300072, China
| | - Zhenyi Xue
- ∥Research Center of Basic Medical Science and Department of Immunology, Basic Medical College; Key Laboratory of Immune Microenvironment and Diseases, Ministry of Education of China; Key Laboratory of Hormones and Development (Ministry of Health), Metabolic Diseases Hospital and Tianjin Institute of Endocrinology, Tianjin Medical University, Tianjin 300070, China
| | - Yan Li
- ∥Research Center of Basic Medical Science and Department of Immunology, Basic Medical College; Key Laboratory of Immune Microenvironment and Diseases, Ministry of Education of China; Key Laboratory of Hormones and Development (Ministry of Health), Metabolic Diseases Hospital and Tianjin Institute of Endocrinology, Tianjin Medical University, Tianjin 300070, China
| | - Rongxin Zhang
- ∥Research Center of Basic Medical Science and Department of Immunology, Basic Medical College; Key Laboratory of Immune Microenvironment and Diseases, Ministry of Education of China; Key Laboratory of Hormones and Development (Ministry of Health), Metabolic Diseases Hospital and Tianjin Institute of Endocrinology, Tianjin Medical University, Tianjin 300070, China
| | - Liandong Deng
- †Department of Polymer Science and Technology and Key Laboratory of Systems Bioengineering of the Ministry of Education; Department of Polymer Science and Technology, School of Chemical Engineering and Technology, Tianjin University, Tianjin 300072, China
| | - Anjie Dong
- †Department of Polymer Science and Technology and Key Laboratory of Systems Bioengineering of the Ministry of Education; Department of Polymer Science and Technology, School of Chemical Engineering and Technology, Tianjin University, Tianjin 300072, China
- §Collaborative Innovation Center of Chemical Science and Engineering, Tianjin 300072, China
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Wang S, Song X, Hao C, Gao Z, Chen J, Qiu J. Elucidating triplet-sensitized photolysis mechanisms of sulfadiazine and metal ions effects by quantum chemical calculations. Chemosphere 2015; 122:62-69. [PMID: 25496743 DOI: 10.1016/j.chemosphere.2014.11.007] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/22/2014] [Accepted: 11/02/2014] [Indexed: 06/04/2023]
Abstract
Sulfadiazine (SDZ) mainly proceeds triplet-sensitized photolysis with dissolved organic matter (DOM) in the aquatic environment. However, the mechanisms underlying the triplet-sensitized photolysis of SDZ with DOM have not been fully worked out. In this study, we investigated the mechanisms of triplet-sensitized photolysis of SDZ(0) (neutral form) and SDZ(-) (anionic form) with four DOM analogues, i.e., fluorenone (FL), thioxanthone (TX), 2-acetonaphthone (2-AN), and 4-benzoylbenzoic acid (CBBP), and three metal ions (i.e., Mg(2+), Ca(2+), and Zn(2+)) effects using quantum chemical calculations. Results indicated that the triplet-sensitized photolysis mechanism of SDZ(0) with FL, TX, and 2-AN was hydrogen transfer, and with CBBP was electron transfer along with proton transfer (for complex SDZ(0)-CBBP2) and hydrogen transfer (for complex SDZ(0)-CBBP1). The triplet-sensitized photolysis mechanisms of SDZ(-) with FL, TX, and CBBP was electron transfer along with proton transfer, and with 2-AN was hydrogen transfer. The triplet-sensitized photolysis product of both SDZ(0) and SDZ(-) was a sulfur dioxide extrusion product (4-(2-iminopyrimidine-1(2H)-yl)aniline), but the formation routs of the products for SDZ(0) and SDZ(-) were different. In addition, effects of the metal ions on the triplet-sensitized photolysis of SDZ(0) and SDZ(-) were different. The metal ions promoted the triplet-sensitized photolysis of SDZ(0), but inhibited the triplet-sensitized photolysis of SDZ(-).
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Affiliation(s)
- Se Wang
- State Key Laboratory of Fine Chemicals, Dalian University of Technology, Dalian 116024, China
| | - Xuedan Song
- State Key Laboratory of Fine Chemicals, Dalian University of Technology, Dalian 116024, China
| | - Ce Hao
- State Key Laboratory of Fine Chemicals, Dalian University of Technology, Dalian 116024, China.
| | - Zhanxian Gao
- State Key Laboratory of Fine Chemicals, Dalian University of Technology, Dalian 116024, China
| | - Jingwen Chen
- Key Laboratory of Industrial Ecology and Environmental Engineering (MOE), School of Environmental Science and Technology, Dalian University of Technology, Dalian 116024, China
| | - Jieshan Qiu
- State Key Laboratory of Fine Chemicals, Dalian University of Technology, Dalian 116024, China
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Yenilmez E, Başaran E, Arslan R, Berkman MS, Güven UM, Bayçu C, Yazan Y. Chitosan gel formulations containing egg yolk oil and epidermal growth factor for dermal burn treatment. Pharmazie 2015; 70:67-73. [PMID: 25997244] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
In the present study chitosan based gel formulations containing Egg Yolk Oil (EYO) and Epidermal Growth Factor (EGF) were formulated successfully aiming at enhanced topical treatment of dermal burns the combination of traditional approaches with modern drug delivery systems. Physicochemical properties of the formulations were analyzed and efficacy of the formulations prepared were evaluated versus a commercial product; Silverdin (1% silver sulfadiazine) in vivo on Wistar rats. Burns were generated on the back of the rats and at predetermined time intervals tissue samples were collected and evaluated histologically. The analyses showed that chitosan based gel formulations containing Egg Yolk Oil (E1) and chitosan based gel formulations containing EYO and EGF (M1) formulations seem to be better alternatives for Silverdin with a significant difference (p < 0.05) considering healing ranks of tissue samples.
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Guimarães PPG, Oliveira SR, de Castro Rodrigues G, Gontijo SML, Lula IS, Cortés ME, Denadai ÂML, Sinisterra RD. Development of sulfadiazine-decorated PLGA nanoparticles loaded with 5-fluorouracil and cell viability. Molecules 2015; 20:879-99. [PMID: 25580685 PMCID: PMC6272719 DOI: 10.3390/molecules20010879] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/24/2014] [Accepted: 12/29/2014] [Indexed: 12/20/2022] Open
Abstract
The aim of this work was to synthesize sulfadiazine-poly(lactide-co-glycolide) (SUL-PLGA) nanoparticles (NPs) for the efficient delivery of 5-fluorouracil to cancer cells. The SUL-PLGA conjugation was assessed using FTIR, 1H-NMR, 13C-NMR, elemental analysis and TG and DTA analysis. The SUL-PLGA NPs were characterized using transmission and scanning electron microscopy and dynamic light scattering. Additionally, the zeta potential, drug content, and in vitro 5-FU release were evaluated. We found that for the SUL-PLGA NPs, Dh = 114.0 nm, ZP = −32.1 mV and the encapsulation efficiency was 49%. The 5-FU was released for up to 7 days from the NPs. Cytotoxicity evaluations of 5-FU-loaded NPs (5-FU-SUL-PLGA and 5-FU-PLGA) on two cancer cell lines (Caco-2, A431) and two normal cell lines (fibroblast, osteoblast) were compared. Higher cytotoxicity of 5-FU-SUL-PLGA NPs were found to both cancer cell lines when compared to normal cell lines, demonstrating that the presence of SUL could significantly enhance the cytotoxicity of the 5-FU-SUL-PLGA NPs when compared with 5-FU-PLGA NPs. Thus, the development of 5-FU-SUL-PLGA NPs to cancer cells is a promising strategy for the 5-FU antitumor formulation in the future.
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Affiliation(s)
- Pedro Pires Goulart Guimarães
- Chemistry Department, Institute of Exact Sciences, Universidade Federal de Minas Gerais, Av. Antonio Carlos, 6627, Pampulha, CEP 31270-901 Belo Horizonte-MG, Brazil.
| | - Sheila Rodrigues Oliveira
- Chemistry Department, Institute of Exact Sciences, Universidade Federal de Minas Gerais, Av. Antonio Carlos, 6627, Pampulha, CEP 31270-901 Belo Horizonte-MG, Brazil.
| | - Gabrielle de Castro Rodrigues
- Chemistry Department, Institute of Exact Sciences, Universidade Federal de Minas Gerais, Av. Antonio Carlos, 6627, Pampulha, CEP 31270-901 Belo Horizonte-MG, Brazil.
| | - Savio Morato Lacerda Gontijo
- Department of Restorative Dentistry, Faculty of Dentistry, Universidade Federal de Minas Gerais, Av. Antonio Carlos, 6627, Pampulha, CEP 31270-901 Belo Horizonte-MG, Brazil.
| | - Ivana Silva Lula
- Chemistry Department, Institute of Exact Sciences, Universidade Federal de Minas Gerais, Av. Antonio Carlos, 6627, Pampulha, CEP 31270-901 Belo Horizonte-MG, Brazil.
| | - Maria Esperanza Cortés
- Department of Restorative Dentistry, Faculty of Dentistry, Universidade Federal de Minas Gerais, Av. Antonio Carlos, 6627, Pampulha, CEP 31270-901 Belo Horizonte-MG, Brazil.
| | - Ângelo Márcio Leite Denadai
- Pharmaceutical Department, Universidade Federal de Juiz de Fora, Campus Governador Valadares-MG, Av. Dr. Raimundo Monteiro de Rezende, 330, Centro, CEP 35010-177 Governador Valadares-MG, Brazil.
| | - Rubén Dario Sinisterra
- Chemistry Department, Institute of Exact Sciences, Universidade Federal de Minas Gerais, Av. Antonio Carlos, 6627, Pampulha, CEP 31270-901 Belo Horizonte-MG, Brazil.
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Xu M, Zhao Y, Yan Q. Efficient visible-light photocatalytic degradation of sulfadiazine sodium with hierarchical Bi₇O₉I₃under solar irradiation. Water Sci Technol 2015; 72:2122-2131. [PMID: 26675999 DOI: 10.2166/wst.2015.433] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
Bi₇O₉I₃, a kind of visible-light-responsive photocatalyst, with hierarchical micro/nano-architecture was successfully synthesized by oil-bath heating method, with ethylene glycol as solvent, and applied to degrade sulfonamide antibiotics. The as-prepared product was characterized by X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS), UV-visible diffuse reflection spectra and scanning electron microscopy (SEM). XRD and XPS tests confirmed that the product was indeed Bi₇O₉I₃. The result of SEM observation shows that the as-synthesized Bi₇O₉I₃ consists of a large number of micro-sheets with parallel rectangle structure. The optical test exhibited strong photoabsorption in visible light irradiation, with 617 nm of absorption edges. Moreover, the difference in the photocatalytic efficiency of as-prepared Bi₇O₉I₃ at different seasons of a whole year was investigated in this study. The chemical oxygen demand removal efficiency and concentration of NO(3)(-) and SO(4)(2-) of solution after reaction were also researched to confirm whether degradation of the pollutant was complete; the results indicated a high mineralization capacity of Bi₇O₉I₃. The as-synthesized Bi₇O₉I₃exhibits an excellent oxidizing capacity of sulfadiazine sodium and favorable stability during the photocatalytic reaction.
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Affiliation(s)
- MengMeng Xu
- Institution of Chemistry and Molecular Engineering, Zhengzhou University, China E-mail:
| | - YaLei Zhao
- Institution of Chemistry and Molecular Engineering, Zhengzhou University, China E-mail:
| | - QiShe Yan
- Institution of Chemistry and Molecular Engineering, Zhengzhou University, China E-mail:
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40
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Wu JT, Wu CH, Liu CY, Huang WJ. Photodegradation of sulfonamide antimicrobial compounds (sulfadiazine, sulfamethizole, sulfamethoxazole and sulfathiazole) in various UV/oxidant systems. Water Sci Technol 2015; 71:412-417. [PMID: 25714641 DOI: 10.2166/wst.2015.005] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
This study used Na₂S₂O₈, NaBrO8 and H₂O₂to degrade sulfadiazine (SDZ), sulfamethizole (SFZ), sulfamethoxazole (SMX) and sulfathiazole (STZ) under ultraviolet (UV) irradiation. The initial concentration of sulfonamide and oxidant in all experiments was 20 mg/L and 5 mM, respectively. The degradation rate for sulfonamides satisfies pseudo-first-order kinetics in all UV/oxidant systems. The highest degradation rate for SDZ, SFZ, SMX and STZ was in the UV/Na₂S₂O₈, UV/NaBrO₃, UV/Na₂S₂O₈ and UV/H₂O₂ system, respectively. In the UV/Na₂S₂O₈ system, the photodegradation rate of SDZ, SFZ, SMX and STZ was 0.0245 min⁻¹, 0.0096 min⁻¹, 0.0283 min⁻¹ and 0.0141 min⁻¹, respectively; moreover, for the total organic carbon removal rate for SDZ, SFZ, SMX and STZ it was 0.0057 min⁻¹, 0.0081 min⁻¹, 0.0130 min⁻¹ and 0.0106 min⁻¹, respectively. Experimental results indicate that the ability of oxidants to degrade sulfonamide varied with pollutant type. Moreover, UV/Na₂S₂O₈ had the highest mineralization rate for all tested sulfonamides.
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Affiliation(s)
- J T Wu
- Department of Chemical and Materials Engineering, National Kaohsiung University of Applied Sciences, 415 Chien Kung Road, Kaohsiung 807, Taiwan E-mail:
| | - C H Wu
- Department of Chemical and Materials Engineering, National Kaohsiung University of Applied Sciences, 415 Chien Kung Road, Kaohsiung 807, Taiwan E-mail:
| | - C Y Liu
- Department of Chemical and Materials Engineering, National Kaohsiung University of Applied Sciences, 415 Chien Kung Road, Kaohsiung 807, Taiwan E-mail:
| | - W J Huang
- Department of Chemical and Materials Engineering, National Kaohsiung University of Applied Sciences, 415 Chien Kung Road, Kaohsiung 807, Taiwan E-mail:
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41
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Lastre-Acosta AM, Cruz-González G, Nuevas-Paz L, Jáuregui-Haza UJ, Teixeira ACSC. Ultrasonic degradation of sulfadiazine in aqueous solutions. Environ Sci Pollut Res Int 2015; 22:918-925. [PMID: 24687784 DOI: 10.1007/s11356-014-2766-2] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/21/2013] [Accepted: 03/10/2014] [Indexed: 06/03/2023]
Abstract
Advanced oxidation methods, like ultrasound (US), are a promising technology for the degradation of emerging pollutants in water matrices, such as sulfonamide antibiotics. Nevertheless, few authors report the degradation of sulfonamides by high-frequency US (>100 kHz), and limited information exist concerning the use of ultrasonic-driven processes in the case of sulfadiazine (SDZ). In this study, SDZ degradation was investigated with the aim to evaluate the influence of initial concentration, pH and US frequency, and power. Ultrasonic frequencies of 580, 862, and 1,142 kHz at different power values and SDZ initial concentrations of 25, 50, and 70 mg L(-1) were used. The results show that SDZ degradation followed pseudo first-order reaction kinetics with k values and percent removals decreasing for increasing solute initial concentration. Higher SDZ percent removals and removal rates were observed for the lowest operating frequency (580 kHz), higher dissipated power, and in slightly acidic solution (pH 5.5). Addition of the radical scavenger n-butanol confirmed that hydroxyl radical-mediated reactions at the interface of the cavitation bubbles are the prevailing degradation mechanism, which is directly related to the pKa-dependent speciation of SDZ molecules. Finally, addition of H2O2 had a detrimental effect on SDZ degradation, whereas the addition of the Fenton reagent showed a positive effect, revealing to be a promising alternative for the removal of sulfadiazine.
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Affiliation(s)
- Arlen Mabel Lastre-Acosta
- Chemical Engineering Department, University of São Paulo, Avenida Prof. Luciano Gualberto, tr. 3, 380, São Paulo, Brazil,
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Rajendiran N, Venkatesh G, Saravanan J. Supramolecular aggregates formed by sulfadiazine and sulfisomidine inclusion complexes with α- and β-cyclodextrins. Spectrochim Acta A Mol Biomol Spectrosc 2014; 129:157-162. [PMID: 24727175 DOI: 10.1016/j.saa.2014.03.028] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/01/2013] [Revised: 03/05/2014] [Accepted: 03/18/2014] [Indexed: 06/03/2023]
Abstract
Sulfadiazine (SDA) and sulfisomidine (SFM) inclusion complexes with two cyclodextrins (α-CD and β-CD) are studied in aqueous as well as in solid state. The inclusion complexes are characterized by UV-visible, fluorescence, time correlated single photon counting, FTIR, DSC, PXRD and (1)H NMR techniques. The self assembled SDA/CD and SFM/CD inclusion complexes form different types of nano and microstructures. The self assembled nanoparticle morphologies are studied using SEM and TEM techniques. SDA/α-CD complex is formed hierarchal morphology, SDA/β-CD and SFM/β-CD complexes form the nanosheet self assembly. However, SFM/α-CD complex forms nanoporous sheet self assembly. van der Waals, hydrophobic and hydrogen bonding interaction play a vital role in the self assembling process.
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Affiliation(s)
- N Rajendiran
- Department of Chemistry, Annamalai University, Annamalainagar 608 002, Tamil Nadu, India.
| | - G Venkatesh
- Department of Chemistry, Annamalai University, Annamalainagar 608 002, Tamil Nadu, India
| | - J Saravanan
- Department of Chemistry, Annamalai University, Annamalainagar 608 002, Tamil Nadu, India
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Yang JF, Zhou SB, Xiao AG, Li WJ, Ying GG. Chemical oxidation of sulfadiazine by the Fenton process: kinetics, pathways, toxicity evaluation. J Environ Sci Health B 2014; 49:909-916. [PMID: 25310806 DOI: 10.1080/03601234.2014.951572] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
This paper investigated sulfadiazine oxidation by the Fenton process under various reaction conditions. The reaction conditions tested in the experiments included the initial pH value of reaction solutions, and the dosages of ferrous ions and hydrogen peroxide. Under the reaction conditions with pH 3, 0.25 mM of ferrous ion and 2 mM of hydrogen peroxide, a removal efficiency of nearly 100% was achieved for sulfadiazine. A series of intermediate products including 4-OH-sulfadiazine/or 5-OH-sulfadiazine, 2-aminopyrimidine, sulfanilamide, formic acid, and oxalic acid were identified. Based on these products, the possible oxidation pathway of sulfadiazine by Fenton's reagent was proposed. The toxicity evaluation of reaction solutions showed increased antimicrobial effects following the Fenton oxidation process. The results from this study suggest that the Fenton oxidation process could remove sulfadiazine, but also increase solution toxicity due to the presence of more toxic products.
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Affiliation(s)
- Ji-Feng Yang
- a Department of Chemistry and Chemical Engineering , Hunan University of Arts and Science , Changde , China
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Zheng X, Fang X, Cai X. Two episodes of anaphylaxis caused by a chlorhexidine sulfadiazine-coated central venous catheter. Chin Med J (Engl) 2014; 127:2395-2397. [PMID: 24931265] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/03/2023] Open
Affiliation(s)
- Xing Zheng
- Department of Anesthesia, Sir Run Run Shaw Hospital (Affiliated with Zhejiang University), Hangzhou, Zhejiang 310016, China
| | - Xiao Fang
- Department of Anesthesia, Sir Run Run Shaw Hospital (Affiliated with Zhejiang University), Hangzhou, Zhejiang 310016, China
| | - Xiujun Cai
- Department of General Surgery, Sir Run Run Shaw Hospital (Affiliated with Zhejiang University), Hangzhou, Zhejiang 310016, China.
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Li M, Chen WP, Wei FX, Jiao WT. [Leaching characteristics of sulfadiazine and sulfamethoxazole in soil column]. Huan Jing Ke Xue 2013; 34:4042-4049. [PMID: 24364329] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
Leaching characteristics and influencing factors of the typical sulfa antibiotics-sulfadiazine and sulfamethoxazole were studied by soil column experiments. The results showed that the leaching rate increased and the residues of sulfa antibiotics in soil column decreased as the soil profile depth increased. The residual concentration of sulfa antibiotics in column filled with 0-20 cm profile soil was 2 times higher than that with 40-60 cm profile soil. The concentration of sulfa antibiotics in the leachate was higher, while the residual concentration in the soil column was lower under a higher leaching velocity. The concentration of sulfa antibiotics in the leachate was close to 500 microg.L-1 when the leaching velocity was 2 mL.min-1, while the concentration of sulfa antibiotics in the leachate was between 100-200 microg.L-1 when the leaching velocity was 1 and 1.5 mL.min-1. The concentrations of sulfa antibiotics in the leachate and soil column increased as the concentration of leaching solution increased. The concentration of sulfa antibiotics in the leachate was close to 0 microg.L-1 when the concentration of leaching solution was 250 microg.L-1 and 125 microg.L-1. When the concentration of leaching solution was 500 microg.L-1, the concentration of sulfa antibiotics in the leachate was close to 500 microg.L-1 and the residue concentration in the soil column was 2 to 3 times higher than that with lower concentration of leaching solution. The results in this research may provide a scientific basis for water irrigation with anibiotics.
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Affiliation(s)
- Man Li
- College of Environmental Science and Engineering, Hebei University of Science and Technology, Shijiazhuang 050018, China.
| | - Wei-Ping Chen
- State Key Laboratory of Urban and Regional Ecology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China
| | - Fu-Xiang Wei
- College of Environmental Science and Engineering, Hebei University of Science and Technology, Shijiazhuang 050018, China
| | - Wei-Tao Jiao
- State Key Laboratory of Urban and Regional Ecology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China
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Selvam A, Zhao Z, Li Y, Chen Y, Leung KSY, Wong JWC. Degradation of tetracycline and sulfadiazine during continuous thermophilic composting of pig manure and sawdust. Environ Technol 2013; 34:2433-2441. [PMID: 24350500 DOI: 10.1080/09593330.2013.772644] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
During composting, the thermophilic phase resulted in high degradation of antibiotics in the composting mass; thus temperature is considered as the major factor for degradation of antibiotics. Therefore, to achieve complete removal of antibiotics, the effect of continuous thermophilic composting on the degradation of antibiotics and their effect on antibiotic resistant bacteria in the pig manure were evaluated. Pig manure was mixed with sawdust, spiked with tetracycline (10 and 100 mg/kg) and sulfadiazine (2 and 20mg/kg) on dry weight (DW) basis and composted at 55 degrees C for six weeks. Based on the organic decomposition, the antibiotics did not affect the composting process significantly, but negatively influenced the bacterial population. Tetracycline clearly exhibited a negative but marginal influence on carbon decomposition at 100 mg/kg level. The bacterial population initially decreased steeply approximately 2 logs and slowly increased thereafter. Sulfadiazine and tetracycline resistant bacterial populations were stable/marginally increased after an initial decrease of about 2 or 3-5 logs, respectively. Sulfadiazine was not detectable after three days; whereas, approximately 8% of tetracycline was detected after 42 days of composting with a t(1/2) of approximately 11 days, irrespective of the initial concentration. The presence of tetracycline in the compost after 42 days of thermophilic composting indicates the involvement of a mesophilic microbial-mediated degradation; however, further studies are required to confirm the direct microbial involvement in the degradation of antibiotics.
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Affiliation(s)
- Ammaiyappan Selvam
- Sino-Forest Applied Research Centre for Pearl River Delta Environment and Department of Biology, Hong Kong Baptist University, Kowloon, Hong Kong SAR
| | - Zhenyong Zhao
- Sino-Forest Applied Research Centre for Pearl River Delta Environment and Department of Biology, Hong Kong Baptist University, Kowloon, Hong Kong SAR
| | - Yunchun Li
- Sino-Forest Applied Research Centre for Pearl River Delta Environment and Department of Biology, Hong Kong Baptist University, Kowloon, Hong Kong SAR
| | - Yumei Chen
- Department of Chemistry, Hong Kong Baptist University, Kowloon, Hong Kong SAR
| | - Kelvin S-Y Leung
- Department of Chemistry, Hong Kong Baptist University, Kowloon, Hong Kong SAR
| | - Jonathan W-C Wong
- Sino-Forest Applied Research Centre for Pearl River Delta Environment and Department of Biology, Hong Kong Baptist University, Kowloon, Hong Kong SAR
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Abstract
Photodegradation mechanism of sulfadiazine (SD) in a solution containing Fe(III), oxalate and algae were investigated in this study. The results indicated that the degradation of SD was slow in a solution containing Fe(III) or oxalate, whereas it was markedly enhanced when Fe(III) and oxalate coexisted. The optimal pH for formation of *OH was 4; a higher or lower pH resulted in a decrease in formation of OH. A moderate increase of oxalate concentration was beneficial to the formation of *OH and the degradation of SD, and the algae enhanced the degradation rate of SD in a solution containing Fe(III) and oxalate. Also, the degradation rate of SD rapidly decreased at low initial concentrations but slowly decreased at high initial concentrations, and pseudo-first order kinetics described the degradation process of SD well. A possible reaction mechanism in solution containing Fe(III), oxalate and algae was proposed, and attack by *OH was the main pathway of SD degradation in the photocatalytic reaction.
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Affiliation(s)
- Junwei Zhang
- The Key Laboratory of Food Colloids and Biotechnology, Ministry of Education, School of Chemical and Material Engineering, Jiangnan University, Wuxi, China.
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Profire L, Pieptu D, Dumitriu RP, Dragostin O, Vasile C. Sulfadiazine modified CS/HA PEC destined to wound dressing. Rev Med Chir Soc Med Nat Iasi 2013; 117:525-531. [PMID: 24340541] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
AIM To present the research results concerning enhanced antimicrobial and release properties of the chitosan derivative with sulfadiazine/hyaluronic acid polyelectrolyte complex (PEC) hydrogel. MATERIAL AND METHODS The PECs have been prepared from chitosan of different molecular weight, sulfadiazine chitosan derivative and sodium hyaluronate. The complex structure was assessed by FT-IR spectroscopic method and swelling capacity was followed by weighing measurements. RESULTS It has been establish that chitosan derivative influenced both PEC properties and swelling capacity. CONCLUSIONS Incorporation in PEC of the sulfadiazine chitosan is a new way to combine bacteriostatic effect of chitosan with that of sulfadiazine, to control properties, antimicrobial activity in the treatment of the wound.
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Affiliation(s)
- Lenuţa Profire
- Faculty of Pharmacy, Department of Pharmaceutical Chemistry, University of Medicine and Pharmacy "Grigore T. Popa" - Iasi
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Tappe W, Herbst M, Hofmann D, Koeppchen S, Kummer S, Thiele B, Groeneweg J. Degradation of sulfadiazine by Microbacterium lacus strain SDZm4, isolated from lysimeters previously manured with slurry from sulfadiazine-medicated pigs. Appl Environ Microbiol 2013; 79:2572-7. [PMID: 23396336 PMCID: PMC3623193 DOI: 10.1128/aem.03636-12] [Citation(s) in RCA: 66] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2012] [Accepted: 02/02/2013] [Indexed: 01/05/2023] Open
Abstract
Sulfadiazine (SDZ)-degrading bacterial cultures were enriched from the topsoil layer of lysimeters that were formerly treated with manure from pigs medicated with (14)C-labeled SDZ. The loss of about 35% of the applied radioactivity after an incubation period of 3 years was attributed to CO2 release due to mineralization processes in the lysimeters. Microcosm experiments with moist soil and soil slurries originating from these lysimeters confirmed the presumed mineralization potential, and an SDZ-degrading bacterium was isolated. It was identified as Microbacterium lacus, denoted strain SDZm4. During degradation studies with M. lacus strain SDZm4 using pyrimidine-ring labeled SDZ, SDZ disappeared completely but no (14)CO2 was released during 10 days of incubation. The entire applied radioactivity (AR) remained in solution and could be assigned to 2-aminopyrimidine. In contrast, for parallel incubations but with phenyl ring-labeled SDZ, 56% of the AR was released as (14)CO2, 16% was linked to biomass, and 21% remained as dissolved, not yet identified (14)C. Thus, it was shown that M. lacus extensively mineralized and partly assimilated the phenyl moiety of the SDZ molecule while forming equimolar amounts of 2-aminopyrimidine. This partial degradation might be an important step in the complete mineralization of SDZ by soil microorganisms.
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Affiliation(s)
- Wolfgang Tappe
- Forschungszentrum Jülich, Institute of Bio- and Geosciences, Institute 3: Agrosphere, Jülich, Germany
| | - Michael Herbst
- Forschungszentrum Jülich, Institute of Bio- and Geosciences, Institute 3: Agrosphere, Jülich, Germany
| | - Diana Hofmann
- Forschungszentrum Jülich, Institute of Bio- and Geosciences, Institute 3: Agrosphere, Jülich, Germany
| | - Stephan Koeppchen
- Forschungszentrum Jülich, Institute of Bio- and Geosciences, Institute 3: Agrosphere, Jülich, Germany
| | - Sirgit Kummer
- Forschungszentrum Jülich, Institute of Bio- and Geosciences, Institute 3: Agrosphere, Jülich, Germany
| | - Björn Thiele
- Forschungszentrum Jülich, Institute of Bio- and Geosciences, Institute 2: Phytosphere, Jülich, Germany
| | - Joost Groeneweg
- Forschungszentrum Jülich, Institute of Bio- and Geosciences, Institute 3: Agrosphere, Jülich, Germany
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Müller T, Rosendahl I, Focks A, Siemens J, Klasmeier J, Matthies M. Short-term extractability of sulfadiazine after application to soils. Environ Pollut 2013; 172:180-185. [PMID: 23063993 DOI: 10.1016/j.envpol.2012.09.010] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/10/2012] [Revised: 08/19/2012] [Accepted: 09/08/2012] [Indexed: 06/01/2023]
Abstract
The long-term environmental fate of the veterinary antibiotic sulfadiazine (SDZ) in soils is determined by a reversible sequestration into a residual fraction and an irreversible formation of non-extractable residues (NER), which can be described as first-order rate processes. However, the concentration dynamics of the resulting fractions of SDZ in soil show an unexplained rapid reduction of extractability during the first 24 h. We therefore investigated the short-term extractability of SDZ in two different soils under different SDZ application procedures over 24 h: with and without manure, for air-dried and for moist soils. In all batches, we observed an instantaneous loss of extractability on a time scale of minutes as well as kinetically determined sequestration and NER formation over 24 h. Data evaluation with a simple kinetic model led to the conclusion that application with manure accelerated the short-term formation of NER, whereas sequestration was very similar for all batches.
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Affiliation(s)
- Tanja Müller
- Institute of Environmental Systems Research, University of Osnabrück, Barbarastraße 12, D-49076 Osnabrück, Germany
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