DOI: 10.1016/j.watres.2018.04.061
Scopus记录号: 2-s2.0-85049510991
论文题名: Inactivation of marine heterotrophic bacteria in ballast water by an Electrochemical Advanced Oxidation Process
作者: Moreno-Andrés J. ; Ambauen N. ; Vadstein O. ; Hallé C. ; Acevedo-Merino A. ; Nebot E. ; Meyn T.
刊名: Water Research
ISSN: 431354
出版年: 2018
卷: 140 起始页码: 377
结束页码: 386
语种: 英语
英文关键词: Bacterial diversity
; Ballast water treatment
; Chlorine active species
; Marine bacteria
; Recolonization
; ROS
Scopus关键词: Chemicals removal (water treatment)
; Disinfection
; Energy utilization
; Reduction
; Seawater
; Ships
; Active species
; Bacterial diversity
; Ballast water treatment
; Marine bacterium
; Re-colonization
; Bacteria
; boron
; chlorine
; diamond
; reactive oxygen metabolite
; sea water
; water
; bacterium
; ballast water
; biodiversity
; biotechnology
; disinfection
; electrochemical method
; electrode
; human activity
; marine environment
; oxidation
; reactive oxygen species
; recolonization
; seawater
; water treatment
; Article
; bacterial colonization
; controlled study
; disinfection
; electrochemical analysis
; energy consumption
; marine bacterium
; microbial community
; nonhuman
; oxidation
; priority journal
; reduction (chemistry)
; water treatment
; Bacteria (microorganisms)
英文摘要: Seawater treatment is increasingly required due to industrial activities that use substantial volumes of seawater in their processes. The shipping industry and the associated management of a ship's ballast water are currently considered a global challenge for the seas. Related to that, the suitability of an Electrochemical Advanced Oxidation Process (EAOP) with Boron Doped Diamond (BDD) electrodes has been assessed on a laboratory scale for the disinfection of seawater. This technology can produce both reactive oxygen species and chlorine species (especially in seawater) that are responsible for inactivation. The EAOP was applied in a continuous-flow regime with real seawater. Natural marine heterotrophic bacteria (MHB) were used as an indicator of disinfection efficiency. A biphasic inactivation kinetic model was fitted on experimental points, achieving 4-Log reductions at 0.019 Ah L−1. By assessing regrowth after treatment, results suggest that higher bacterial damages result from the EAOP when it is compared to chlorination. Furthermore, several issues lacking fundamental understanding were investigated such as recolonization capacity or bacterial community dynamics. It was concluded that, despite disinfection processes being effective, there is not only a possibility for regrowth after treatment but also a change on bacterial population diversity produced by the treatment. Finally, energy consumption was estimated and indicated that 0.264 kWh·m−3 are needed for 4.8-Log reductions of MHB; otherwise, with 0.035 kWh·m−3, less disinfection efficiency can be obtained (2.2-Log red). However, with a residual oxidant in the solution, total inactivation can be achieved in three days. © 2018 Elsevier Ltd Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/112714
Appears in Collections: 气候减缓与适应
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作者单位: Department of Environmental Technologies, INMAR-Marine Research Institute, University of Cádiz, Campus Universitario Puerto Real, Puerto Real, Cádiz, 11510, Spain; Department of Civil and Environmental Engineering, NTNU Norwegian University of Science and Technology, Trondheim, N-7491, Norway; Department of Biotechnology and Food Science, NTNU Norwegian University of Science and Technology, Trondheim, N-7491, Norway
Recommended Citation:
Moreno-Andrés J.,Ambauen N.,Vadstein O.,et al. Inactivation of marine heterotrophic bacteria in ballast water by an Electrochemical Advanced Oxidation Process[J]. Water Research,2018-01-01,140