DOI: 10.1016/j.watres.2017.11.047
Scopus记录号: 2-s2.0-85035802566
论文题名: Inactivation kinetics and efficiencies of UV-LEDs against Pseudomonas aeruginosa, Legionella pneumophila, and surrogate microorganisms
作者: Rattanakul S. ; Oguma K.
刊名: Water Research
ISSN: 431354
出版年: 2018
卷: 130 起始页码: 31
结束页码: 37
语种: 英语
英文关键词: Disinfection
; Energy efficiency
; Inactivation rate constant
; UV light-emitting diode
; Water treatment
Scopus关键词: Bacteriology
; Disinfection
; Energy efficiency
; Energy utilization
; Escherichia coli
; Rate constants
; Ultraviolet radiation
; Water treatment
; Bacillus subtilis spores
; Electrical energy consumption
; Emission wavelength
; Inactivation kinetics
; Legionella pneumophila
; Pathogenic bacterium
; Peak emission wavelength
; Pseudomonas aeruginosa
; Light emitting diodes
; bacteriophage
; bacterium
; disinfection
; electrical power
; energy efficiency
; kinetics
; low pressure
; microbial activity
; microorganism
; pathogen
; ultraviolet radiation
; water treatment
; wavelength
; Article
; Bacillus subtilis
; bacterial spore
; bacteriophage
; energy consumption
; Escherichia coli
; hypobarism
; inactivation rate constant
; Legionella pneumophila
; nonhuman
; priority journal
; Pseudomonas aeruginosa
; survival rate
; ultraviolet radiation
; Allolevivirus
; disinfection
; kinetics
; Legionella pneumophila
; microbiology
; procedures
; Pseudomonas aeruginosa
; radiation response
; water management
; Bacillus subtilis
; Bacteria (microorganisms)
; Enterobacteriophage Qbeta
; Escherichia coli
; Legionella pneumophila
; Pseudomonas aeruginosa
; Allolevivirus
; Disinfection
; Escherichia coli
; Kinetics
; Legionella pneumophila
; Pseudomonas aeruginosa
; Ultraviolet Rays
; Water Microbiology
; Water Purification
英文摘要: To demonstrate the effectiveness of UV light-emitting diodes (UV-LEDs) to disinfect water, UV-LEDs at peak emission wavelengths of 265, 280, and 300 nm were adopted to inactivate pathogenic species, including Pseudomonas aeruginosa and Legionella pneumophila, and surrogate species, including Escherichia coli, Bacillus subtilis spores, and bacteriophage Qβ in water, compared to conventional low-pressure UV lamp emitting at 254 nm. The inactivation profiles of each species showed either a linear or sigmoidal survival curve, which both fit well with the Geeraerd's model. Based on the inactivation rate constant, the 265-nm UV-LED showed most effective fluence, except for with E. coli which showed similar inactivation rates at 265 and 254 nm. Electrical energy consumption required for 3-log10 inactivation (EE,3) was lowest for the 280-nm UV-LED for all microbial species tested. Taken together, the findings of this study determined the inactivation profiles and kinetics of both pathogenic bacteria and surrogate species under UV-LED exposure at different wavelengths. We also demonstrated that not only inactivation rate constants, but also energy efficiency should be considered when selecting an emission wavelength for UV-LEDs. © 2017 Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/113040
Appears in Collections: 气候减缓与适应
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作者单位: Research Center for Advanced Science and Technology, The University of Tokyo, 4-6-1 Komaba, Meguro-ku, Tokyo, 153-8904, Japan
Recommended Citation:
Rattanakul S.,Oguma K.. Inactivation kinetics and efficiencies of UV-LEDs against Pseudomonas aeruginosa, Legionella pneumophila, and surrogate microorganisms[J]. Water Research,2018-01-01,130