DOI: 10.1016/j.watres.2018.08.015
Scopus记录号: 2-s2.0-85051683217
论文题名: Transformation of oxytetracycline by redox-active Fe(III)- and Mn(IV)-containing minerals: Processes and mechanisms
作者: Karpov M. ; Seiwert B. ; Mordehay V. ; Reemtsma T. ; Polubesova T. ; Chefetz B.
刊名: Water Research
ISSN: 431354
出版年: 2018
卷: 145 起始页码: 136
结束页码: 145
语种: 英语
英文关键词: Adsorption
; Antibiotic
; Electrospray
; Radical
; Removal
; Tetracycline
Scopus关键词: Adsorption
; Antibiotics
; Liquid chromatography
; Manganese oxide
; Mass spectrometry
; Minerals
; Oxidation
; Reaction kinetics
; Redox reactions
; Removal
; X ray photoelectron spectroscopy
; Electrochemical degradation
; Electrosprays
; Environmental behavior
; Liquid chromatography - mass spectrometries
; Radical
; Tetracycline
; Tetracycline antibiotics
; Transformation products
; Iron compounds
; ferric ion
; manganese
; oxytetracycline
; tetracycline
; adsorption
; antibiotics
; aqueous solution
; electrochemical method
; free radical
; iron
; manganese
; mineral
; pollutant removal
; reaction kinetics
; redox conditions
; transformation
; aqueous solution
; Article
; controlled study
; decomposition
; drug transformation
; electrochemistry
; liquid chromatography-mass spectrometry
; mass spectrometry
; molecular weight
; photoelectron spectroscopy
; priority journal
; reaction analysis
; surface property
英文摘要: Abiotic mechanisms of oxytetracycline degradation by redox-active minerals, Fe(III)-saturated montmorillonite (Fe-SWy) and birnessite (δ-MnO2), were studied to better understand the environmental behavior of tetracycline antibiotics in aqueous systems. Kinetics of dissipation (adsorption, oxidation and formation of transformation products (TPs)), was investigated up to 7 days, and reaction mechanisms were elucidated based on identification of TPs by liquid chromatography mass spectrometry. Oxytetracycline was completely removed from solution by both minerals, however kinetics, TPs and mechanisms were distinct for each mineral. Oxytetracycline oxidation by δ-MnO2 occurred within minutes; 54 identified TPs were detected only in solution, most of them exhibited decreasing levels with time. In contrast, oxytetracycline was completely adsorbed by Fe-SWy, its degradation was slower, only 29 TPs were identified, among them 13 were surface-bound, and most of the TPs accumulated in the system with time. Oxytetracycline transformation by δ-MnO2 involved radicals, as was proven by electrochemical degradation. Reductive dissolution was observed for both minerals. X-ray photoelectron spectroscopy demonstrated accumulation of Fe(II) on Fe-SWy surface, whereas Mn(II) was primarily released from δ-MnO2 surface. Highly oxidized carbon species (i.e., newly formed TPs) were observed on the surface of both minerals interacting with oxytetracycline. This study demonstrates the impact of structure and reactivity of redox-active minerals on removal and decomposition of tetracycline antibiotics in aqueous systems. © 2018 Elsevier Ltd Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/112451
Appears in Collections: 气候减缓与适应
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作者单位: Department of Soil and Water Sciences, Faculty of Agriculture, Food and Environment, The Hebrew University of Jerusalem, P.O. Box 12, Rehovot, 76100, Israel; Department of Analytical Chemistry, Helmholtz Centre for Environmental Research GmbH – UFZ, Permoserstrasse 15, Leipzig, 04318, Germany
Recommended Citation:
Karpov M.,Seiwert B.,Mordehay V.,et al. Transformation of oxytetracycline by redox-active Fe(III)- and Mn(IV)-containing minerals: Processes and mechanisms[J]. Water Research,2018-01-01,145