DOI: 10.1016/j.watres.2019.01.037
Scopus记录号: 2-s2.0-85061345043
论文题名: Effect of dissolved oxygen on efficiency of TOC reduction by UV at 185 nm in an ultrapure water production system
作者: Choi J. ; Chung J.
刊名: Water Research
ISSN: 431354
出版年: 2019
起始页码: 21
结束页码: 27
语种: 英语
英文关键词: Dissolved oxygen
; H 2 O 2
; Low-molecular-weight compounds
; Ultrapure water
; UV irradiation
Scopus关键词: Biochemical oxygen demand
; Degradation
; Dissolution
; Efficiency
; Irradiation
; Methanol
; Molecular oxygen
; Organic carbon
; Degradation efficiency
; Experimental apparatus
; H2O2
; Low molecular weight compounds
; Total Organic Carbon
; Ultra-pure water
; Ultraviolet lights
; UV irradiation
; Dissolved oxygen
; dissolved oxygen
; formaldehyde
; formic acid
; hydrogen
; hydrogen peroxide
; hydroxyl radical
; methanol
; organic carbon
; superoxide
; water
; concentration (composition)
; degradation
; dissolved oxygen
; efficiency measurement
; experimental apparatus
; hydrogen peroxide
; methanol
; reduction
; total organic carbon
; ultraviolet radiation
; water treatment
; Article
; degradation
; oxygen concentration
; photolysis
; priority journal
; reduction (chemistry)
; total organic carbon
; ultraviolet irradiation
; ultraviolet radiation
英文摘要: The effect of dissolved oxygen (DO) on the degradation of methanol by ultraviolet (UV) light at 185 nm (UV-185) was examined in this study. The experiments were conducted using a bench-scale experimental apparatus that was operated under continuous conditions. In the control tests with various DO conditions, it was confirmed that UV irradiation of water without methanol produced approximately 54 μg/L of H 2 O 2 and removed 15%–90% of the DO. The production of H 2 O 2 was affected by the mixing conditions within the UV reactor and the dose of UV. The degradation efficiency of methanol by UV-185 irradiation improved linearly with increasing DO concentration, with more than 90% DO consumption. The maximum total organic carbon (TOC) removal rate was observed at 100 μg/L DO and 433 mW·sec/cm 2 , the highest DO and dosage conditions in this study. The production of H 2 O 2 was also affected by DO concentration in the feed water, especially at the high UV dosage, in which lower H 2 O 2 production was observed at higher DO. © 2019 Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/121964
Appears in Collections: 气候变化事实与影响
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作者单位: R&D Center, Samsung Engineering Co. Ltd, 41 Maeyoung-Ro, 269 Beon-Gil, Youngtong-Gu, Suwon, Gyeonggi-Do 16523, South Korea
Recommended Citation:
Choi J.,Chung J.. Effect of dissolved oxygen on efficiency of TOC reduction by UV at 185 nm in an ultrapure water production system[J]. Water Research,2019-01-01