DOI: 10.1016/j.watres.2018.06.068
Scopus记录号: 2-s2.0-85053042362
论文题名: Light-excited photoelectrons coupled with bio-photocatalysis enhanced the degradation efficiency of oxytetracycline
作者: Ding R. ; Yan W. ; Wu Y. ; Xiao Y. ; Gang H. ; Wang S. ; Chen L. ; Zhao F.
刊名: Water Research
ISSN: 431354
出版年: 2018
卷: 143 起始页码: 589
结束页码: 598
语种: 英语
英文关键词: Biodegradation
; Oxytetracycline
; Photocatalytic degradation
; Photoelectrons
; Synergistic degradation
Scopus关键词: Biodegradation
; Efficiency
; Microorganisms
; Photocatalysis
; Photocatalysts
; Photoelectrons
; Photons
; Wastewater treatment
; Degradation efficiency
; Degradation mechanism
; Hydraulic retention time
; Intermediate compound
; Interstitial water
; Oxytetracyclines (OTC)
; Photo catalytic degradation
; Refractory degradations
; Degradation
; antimicrobial activity
; bioaccumulation
; biodegradation
; catalysis
; catalyst
; electron
; oxytetracycline
; perturbation
; wastewater treatment
; water retention
英文摘要: Intimately coupled photocatalysis and biodegradation (ICPB) is a novel wastewater treatment technique that has potential applications in refractory degradation. This paper reports a synergistic degradation protocol that allowing the transfer of photoelectrons between photocatalysts and microbes without supplementary electron donors or improving the loading rate of the photocatalysts. As a result, a degradation rate of ∼94% was sustained for 400 h in a perturbation setup with a hydraulic retention time of 4.0 h. We achieved the degradation of β-apo-oxytetracycline, a stable antimicrobial intermediate compound (half-life of 270 d in soil interstitial water), within 10 min, and no accumulation was observed. Moreover, the required loading rate of the photocatalyst was dramatically reduced to 18.3% compared to previous reports which mentioned much higher rates. The results of our study provided a new strategy to improve the degradation efficiency of oxytetracycline and give new insight into the degradation mechanism of the bio-photocatalytic degradation system. © 2018 Elsevier Ltd Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/112557
Appears in Collections: 气候减缓与适应
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作者单位: Key Laboratory of Urban Pollutant Conversion, Institute of Urban Environment, Chinese Academy of Sciences, Xiamen, 361021, China; University of Chinese Academy of Sciences, Beijing, 100049, China; Institute of Urban Environment, Chinese Academy of Sciences, Xiamen, 361021, China
Recommended Citation:
Ding R.,Yan W.,Wu Y.,et al. Light-excited photoelectrons coupled with bio-photocatalysis enhanced the degradation efficiency of oxytetracycline[J]. Water Research,2018-01-01,143