DOI: 10.1016/j.watres.2018.03.022
Scopus记录号: 2-s2.0-85044712900
论文题名: Efficient degradation of sulfamethazine in simulated and real wastewater at slightly basic pH values using Co-SAM-SCS /H2O2 Fenton-like system
作者: Cheng M. ; Zeng G. ; Huang D. ; Lai C. ; Liu Y. ; Zhang C. ; Wan J. ; Hu L. ; Zhou C. ; Xiong W.
刊名: Water Research
ISSN: 431354
出版年: 2018
卷: 138 起始页码: 7
结束页码: 18
语种: 英语
英文关键词: Cobalt
; Degradation
; Fenton-like
; Steel converter slag
; Sulfamethazine
Scopus关键词: Antibiotics
; Catalyst activity
; Cobalt
; Crystal structure
; Degradation
; Energy dispersive spectroscopy
; High performance liquid chromatography
; Mass spectrometry
; Oxidation
; pH
; Salicylic acid
; Scanning electron microscopy
; Slags
; X ray diffraction
; X ray photoelectron spectroscopy
; Energy dispersive X ray spectroscopy
; Environmental remediation
; Fenton likes
; Fourier transform infrared
; Heterogeneous Fenton-like catalysts
; Municipal wastewaters
; Steel converter slags
; Sulfamethazine
; Cobalt compounds
; cobalt
; hydrogen peroxide
; iron
; sulfadimidine
; antiinfective agent
; cobalt
; cobaltous nitrate
; hydrogen peroxide
; iron
; methanol
; salicylic acid
; sulfadimidine
; antibiotics
; catalysis
; catalyst
; crystal structure
; degradation
; environmental research
; hydrogen peroxide
; pH
; wastewater treatment
; adsorption
; Article
; catalyst
; chemical composition
; chemical structure
; controlled study
; drug degradation
; energy dispersive X ray spectroscopy
; Fenton reaction
; high performance liquid chromatography
; pH
; physical chemistry
; priority journal
; scanning electron microscopy
; simulation
; surface area
; waste water management
; X ray diffraction
; X ray photoelectron spectroscopy
; catalysis
; chemistry
; ecosystem restoration
; infrared spectroscopy
; pH
; river
; waste water
; water pollutant
; X ray photoemission spectroscopy
; Anti-Infective Agents
; Catalysis
; Cobalt
; Environmental Restoration and Remediation
; Hydrogen Peroxide
; Hydrogen-Ion Concentration
; Iron
; Methanol
; Microscopy, Electron, Scanning
; Photoelectron Spectroscopy
; Rivers
; Salicylic Acid
; Spectroscopy, Fourier Transform Infrared
; Sulfamethazine
; Waste Water
; Water Pollutants, Chemical
; X-Ray Diffraction
英文摘要: The presence of antibiotics in aquatic environments has attracted global concern. Fenton process is an attractive yet challenging method for antibiotics degradation, especially when such a reaction can be conducted at neutral pH values. In this study, a novel composite Fe/Co catalyst was synthesized via the modification of steel converter slag (SCS) by salicylic acid–methanol (SAM) and cobalt nitrate (Co(NO3)2). The catalysts were characterized by N2-Brunauer–Emmett–Teller (BET), X-ray diffraction (XRD), Fourier transform infrared (FT-IR), X-ray photoelectron spectroscopy (XPS), scanning electron microscopy (SEM) and energy dispersive X-ray spectroscopy (EDS). The results indicated that the Co-SAM-SCS/H2O2 Fenton-like system was very effective for sulfamethazine (SMZ) degradation at a wide pH range. At initial pH of 7.0, the degradation rate of SMZ in Co-SAM-SCS/H2O2 system was 2.48, 3.20, 6.18, and 16.21 times of that in Fe-SAM-SCS/H2O2, SAM-SCS/H2O2, Co(NO3)2/H2O2 and SCS/H2O2 system, respectively. The preliminary analysis suggested that high surface area of Co-SAM-SCS sample and synergistic effect between introduced Co and SAM-SCS are responsible for the efficient catalytic activity. During the degradation, three main intermediates were identified by high performance liquid chromatography–mass spectrometry (HPLC–MS) analysis. Based on this, a possible degradation pathway was proposed. The SEM images, XRD patterns and XPS spectra before and after the reactions demonstrate that the crystal and chemical structure of Co-SAM-SCS after five cycles are almost unchanged. Besides, the Co-SAM-SCS presented low iron and cobalt leaching (0.17 mg/L and 2.36 mg/L, respectively). The studied Fenton-like process also showed high degradation of SMZ in river water and municipal wastewater. The progress will bring valuable insights to develop high-performance heterogeneous Fenton-like catalysts for environmental remediation. © 2018 Elsevier Ltd Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/112798
Appears in Collections: 气候减缓与适应
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作者单位: College of Environmental Science and Engineering, Hunan University, Changsha, Hunan 410082, China; Key Laboratory of Environmental Biology and Pollution Control (Hunan University), Ministry of Education, Changsha, Hunan 410082, China
Recommended Citation:
Cheng M.,Zeng G.,Huang D.,et al. Efficient degradation of sulfamethazine in simulated and real wastewater at slightly basic pH values using Co-SAM-SCS /H2O2 Fenton-like system[J]. Water Research,2018-01-01,138