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DOI | 10.1016/j.watres.2016.11.024 |
Evaluating UV-C LED disinfection performance and investigating potential dual-wavelength synergy | |
Beck, Sara E.1,4; Ryu, Hodon2; Boczek, Laura A.2; Cashdollar, Jennifer L.2; Jeanis, Kaitlyn M.1; Rosenblum, James S.1; Lawal, Oliver R.3; Linden, Karl G.1 | |
发表日期 | 2017-02-01 |
ISSN | 0043-1354 |
卷号 | 109页码:207-216 |
英文摘要 | A dual-wavelength UV-C LED Unit, emitting at peaks of 260 rim, 280 nm, and the combination of 2601280 nm together was evaluated for its inactivation efficacy and energy efficiency at disinfecting Escherichia coli, MS2 coliphage, human adenovirus type 2 (HAdV2), and Bacillus pumilus spores, compared to conventional low-pressure and medium-pressure UV mercury vapor lamps. The dual wavelength unit was also used to measure potential synergistic effects of multiple wavelengths on bacterial and viral inactivation and DNA and RNA damage. All five UV sources demonstrated similar inactivation of E. coli. For MS2, the 260 nm LED was most effective. For HAdV2 and B. pumilus, the MP UV lamp was most effective. When measuring electrical energy per order of reduction, the LP UV lamp was most efficient for inactivating E. coli and MS2; the LP UV and MP UV mercury lamps were equally efficient for HAdV2 and B. pumilus spores. Among the UV-C LEDs, there was no statistical difference in electrical efficiency for inactivating MS2, HAdV2, and B. pumilus spores. The 260 nm and 2601280 nm LEDs had a statistical energy advantage for E. coli inactivation. For UV-C LEDs to match the electrical efficiency per order of log reduction of conventional LP UV sources, they must reach efficiencies of 25-39% or be improved on by smart reactor design. No dual wavelength synergies were detected for bacterial and viral inactivation nor for DNA and RNA damage. (C) 2016 Elsevier Ltd. All rights reserved. |
英文关键词 | Combined wavelengths;Electrical energy per order;Human adenovirus type 2;Bacillus pumilus spores;Nucleic acid damage |
语种 | 英语 |
WOS记录号 | WOS:000392788900021 |
来源期刊 | WATER RESEARCH |
来源机构 | 美国环保署 |
文献类型 | 期刊论文 |
条目标识符 | http://gcip.llas.ac.cn/handle/2XKMVOVA/60180 |
作者单位 | 1.Univ Colorado Boulder, Dept Civil Environm & Architectural Engn, Boulder, CO 80309 USA; 2.US EPA, Off Res & Dev, 26 W Martin Luther King Dr, Cincinnati, OH 45268 USA; 3.AquiSense Technol, 11941 Oxford Hills Dr, Walton, KY 41094 USA; 4.Asian Inst Technol, Sch Environm Resources & Dev, Pathum Thani 12120, Thailand |
推荐引用方式 GB/T 7714 | Beck, Sara E.,Ryu, Hodon,Boczek, Laura A.,et al. Evaluating UV-C LED disinfection performance and investigating potential dual-wavelength synergy[J]. 美国环保署,2017,109:207-216. |
APA | Beck, Sara E..,Ryu, Hodon.,Boczek, Laura A..,Cashdollar, Jennifer L..,Jeanis, Kaitlyn M..,...&Linden, Karl G..(2017).Evaluating UV-C LED disinfection performance and investigating potential dual-wavelength synergy.WATER RESEARCH,109,207-216. |
MLA | Beck, Sara E.,et al."Evaluating UV-C LED disinfection performance and investigating potential dual-wavelength synergy".WATER RESEARCH 109(2017):207-216. |
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