DOI: 10.1016/j.watres.2017.12.020
Scopus记录号: 2-s2.0-85038806928
论文题名: Cyanobacterium removal and control of algal organic matter (AOM) release by UV/H2O2 pre-oxidation enhanced Fe(II) coagulation
作者: Jia P. ; Zhou Y. ; Zhang X. ; Zhang Y. ; Dai R.
刊名: Water Research
ISSN: 431354
出版年: 2018
卷: 131 起始页码: 122
结束页码: 130
语种: 英语
英文关键词: Algal organic matter
; Cell morphology
; FeSO4
; Microcystis aeruginosa
; UV/H2O2
Scopus关键词: Algae
; Algae control
; Bacteria
; Biogeochemistry
; Biological materials
; Cells
; Chemical water treatment
; Coagulation
; Cytology
; Irradiation
; Organic compounds
; Oxidation
; Pollution control
; Potable water
; Toxic materials
; Water pollution
; Algal organic matters
; Cell morphology
; FeSO4
; Microcystis aeruginosa
; UV/H2O2
; Iron compounds
; hydrogen peroxide
; iron
; microcystin
; organic matter
; reactive oxygen metabolite
; cells and cell components
; coagulation
; cyanobacterium
; drinking water
; irradiation
; microalga
; organic matter
; oxidation
; pollutant removal
; reactive oxygen species
; Article
; cell structure
; concentration (parameters)
; controlled study
; Microcystis aeruginosa
; nonhuman
; oxidation
; priority journal
; ultraviolet irradiation
; ultraviolet radiation
; zeta potential
; algae
; Microcystis aeruginosa
英文摘要: Harmful algal blooms in source water are a worldwide issue for drinking water production and safety. UV/H2O2, a pre-oxidation process, was firstly applied to enhance Fe(II) coagulation for the removal of Microcystis aeruginosa [M. aeruginosa, 2.0 (±0.5) × 106 cell/mL] in bench scale. It significantly improved both algae cells removal and algal organic matter (AOM) control, compared with UV irradiation alone (254 nm UVC, 5.4 mJ/cm2). About 94.7% of algae cells were removed after 5 min UV/H2O2 pre-treatment with H2O2 dose 375 μmol/L, FeSO4 coagulation (dose 125 μmol/L). It was also certified that low residue Fe level and AOM control was simultaneously achieved due to low dose of Fe(II) to settle down the cells as well as the AOM. The result of L9(3)4 orthogonal experiment demonstrated that H2O2 and FeSO4 dose was significantly influenced the algae removal. UV/H2O2 induced an increase of intracellular reactive oxidant species (ROS) and a decrease in zeta potential, which might contribute to the algae removal. The total microcystins (MCs) concentration was 1.5 μg/L after UV/H2O2 pre-oxidation, however, it could be removed simultaneously with the algae cells and AOM. This study suggested a novel application of UV/H2O2-Fe(II) process to promote algae removal and simultaneously control AOM release in source waters, which is a green and promising technology without secondary pollution. © 2017 Elsevier Ltd Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/113001
Appears in Collections: 气候减缓与适应
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作者单位: Department of Environmental Science and Engineering, Fudan University, Shanghai, 200433, China
Recommended Citation:
Jia P.,Zhou Y.,Zhang X.,et al. Cyanobacterium removal and control of algal organic matter (AOM) release by UV/H2O2 pre-oxidation enhanced Fe(II) coagulation[J]. Water Research,2018-01-01,131