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Potential for natural and enhanced attenuation of sulphanilamide in a contaminated chalk aquifer
Bennett, Karen A.1; Kelly, Simon D.2; Tang, Xiangyu3; Reid, Brian J.1
2017-12-01
Source PublicationJOURNAL OF ENVIRONMENTAL SCIENCES
ISSN1001-0742
Volume62Pages:39-48
AbstractUnderstanding antibiotic biodegradation is important to the appreciation of their fate and removal from the environment. In this research an Isotope Ratio Mass Spectrometry (IRMS) method was developed to evaluate the extent of biodegradation of the antibiotic, sulphanilamide, in contaminated groundwater. Results indicted an enrichment in delta C-13 of 8.44% from -26.56 (at the contaminant source) to -18.12%(300 m downfield of the source). These results confirm reductions in sulphanilamide concentrations (from 650 to 10 mg/L) across the contaminant plume to be attributable to biodegradation (56%) vs. other natural attenuation processes, such as dilution or dispersion (42%). To understand the controls on sulphanilamide degradation ex-situ microcosms assessed the influence of sulphanilamide concentration, redox conditions and an alternative carbon source. Results indicated, high levels of anaerobic capacity (similar to 50% mineralisation) to degrade sulphanilamide under high (263 mg/L), moderate (10 mg/L) and low (0.02 mg/L) substrate concentrations. The addition of electron acceptors; nitrate and sulphate, did not significantly enhance the capacity of the groundwater to anaerobically biodegrade sulphanilamide. Interestingly, where alternative carbon sources were present, the addition of nitrate and sulphate inhibited sulphanilamide biodegradation. These results suggest, under in-situ conditions, when a preferential carbon source was available for biodegradation, sulphanilamide could be acting as a nitrogen and/or sulphur source. These findings are important as they highlight sulphanilamide being used as a carbon and a putative nitrogen and sulphur source, under prevailing iron reducing conditions. (C) 2017 The Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences. Published by Elsevier B.V.
KeywordAntibiotics Sulphonamide Groundwater contamination Biodegradation Stable isotope fractionation IRMS
DOI10.1016/j.jes.2017.08.010
WOS KeywordEMERGING ORGANIC CONTAMINANTS ; CARBON-ISOTOPE ANALYSIS ; PERSONAL CARE PRODUCTS ; WATER TREATMENT PLANTS ; IN-SITU DEGRADATION ; ANTIBIOTIC SULFAMETHOXAZOLE ; ANAEROBIC FERMENTATION ; AROMATIC-HYDROCARBONS ; MICROBIAL-POPULATIONS ; AQUATIC ENVIRONMENT
Language英语
Funding ProjectNatural Environment Research Council (NERC) ; Chinese Academy of Sciences President's International Fellowship Initiative[2016VEA040]
WOS Research AreaEnvironmental Sciences & Ecology
WOS SubjectEnvironmental Sciences
WOS IDWOS:000418892300006
Funding OrganizationNatural Environment Research Council (NERC) ; Chinese Academy of Sciences President's International Fellowship Initiative
PublisherSCIENCE PRESS
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Cited Times:5[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.imde.ac.cn/handle/131551/20800
Collection山地表生过程与生态调控重点实验室
Corresponding AuthorReid, Brian J.
Affiliation1.Univ East Anglia, Sch Environm Sci, Norwich Res Pk, Norwich NR4 7TJ, Norfolk, England
2.IAEA, Food & Environm Protect Lab, A-1400 Vienna, Austria
3.Chinese Acad Sci, Inst Mt Hazards & Environm, Key Lab Mt Surface Proc & Ecol Regulat, Chengdu 610041, Sichuan, Peoples R China
Recommended Citation
GB/T 7714
Bennett, Karen A.,Kelly, Simon D.,Tang, Xiangyu,et al. Potential for natural and enhanced attenuation of sulphanilamide in a contaminated chalk aquifer[J]. JOURNAL OF ENVIRONMENTAL SCIENCES,2017,62:39-48.
APA Bennett, Karen A.,Kelly, Simon D.,Tang, Xiangyu,&Reid, Brian J..(2017).Potential for natural and enhanced attenuation of sulphanilamide in a contaminated chalk aquifer.JOURNAL OF ENVIRONMENTAL SCIENCES,62,39-48.
MLA Bennett, Karen A.,et al."Potential for natural and enhanced attenuation of sulphanilamide in a contaminated chalk aquifer".JOURNAL OF ENVIRONMENTAL SCIENCES 62(2017):39-48.
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