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题名: VUV/UV/Chlorine as an Enhanced Advanced Oxidation Process for Organic Pollutant Removal from Water: Assessment with a Novel Mini-Fluidic VUV/UV Photoreaction System (MVPS)
作者: Li, Mengkai; Qiang, Zhimin; Hou, Pin; Bolton, James R.; Qu, Jiuhui; Li, Peng; Wang, Chen
刊名: ENVIRONMENTAL SCIENCE & TECHNOLOGY
出版日期: 2016-06-07
卷号: 50, 期号:11, 页码:5849-5856
DOI: 10.1021/acs.est.6b00133
部门归属: 中国科学院饮用水科学与技术重点实验室
英文摘要: Vacuum ultraviolet (VUV) and ultraviolet (UV)/chlorine processes are regarded as two of many advanced oxidation processes (AOPs). Because of the similar cost of VUV/UV and UV lamps, a combination of VUV and UV/chlorine (i.e., VUV/UV/chlorine) may enhance the removal of organic pollutants in water but without any additional power input. In this paper, a mini-fluidic VUV/UV photoreaction system (MVPS) was developed for bench-scale experiments, which could emit both VUV (185 nm) and DV (254 nm) or solely DV beams with a nearly identical UV photon fluence. The photon fluence rates of UV and VUV output by the MVPS were determined to be 8.88 X 10(-4) and 4.93 x 10(-5) einstein m(-2) s(-1), respectively. The VUV/UV/chlorine process exhibited a strong enhancement concerning the degradation of methylene blue (MB, a model organic pollutant) as compared to the total performance of the VUV/UV and UV/chlorine processes, although the photon fluence of the VUV only accounted for 5.6% of that of the UV. An acidic pH favored MB degradation by the VUV/UV/chlorine process. The synergistic mechanism of the VUV/UV/chlorine process was mainly ascribed to the effective use of (OH)-O-center dot for pollutant removal through formation of longer-lived secondary radicals (e.g., (OCl)-O-center dot). This study demonstrates that the new VUV/UV/chlorine process, as an enhanced AOP, can be applied as a highly effective and energy-saving technology for small-scale water and wastewater treatment.
收录类别: SCI
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内容类型: 期刊论文
URI标识: http://ir.rcees.ac.cn/handle/311016/36225
Appears in Collections:中国科学院饮用水科学与技术重点实验室_期刊论文

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Recommended Citation:
Li, Mengkai,Qiang, Zhimin,Hou, Pin,et al. VUV/UV/Chlorine as an Enhanced Advanced Oxidation Process for Organic Pollutant Removal from Water: Assessment with a Novel Mini-Fluidic VUV/UV Photoreaction System (MVPS)[J]. ENVIRONMENTAL SCIENCE & TECHNOLOGY,2016,50(11):5849-5856.
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文件名: VUVUVChlorine as an Enhanced Advanced Oxidation Process for Organic Pollutant Removal from Water Assessment with a Novel Mini-Fluidic VUVUV Photoreaction System (MVPS).pdf
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