DOI: 10.1016/j.watres.2017.11.026
Scopus记录号: 2-s2.0-85034086729
论文题名: Evaluation of potassium ferrate as an alternative disinfectant on cyanobacteria inactivation and associated toxin fate in various waters
作者: Fan J. ; Lin B.-H. ; Chang C.-W. ; Zhang Y. ; Lin T.-F.
刊名: Water Research
ISSN: 431354
出版年: 2018
卷: 129 起始页码: 199
结束页码: 207
语种: 英语
英文关键词: Cell integrity
; Microcystins
; Oxidation
; Potassium ferrate
; Various waters
Scopus关键词: Biogeochemistry
; Cells
; Cytology
; Ethylenediaminetetraacetic acid
; Iron compounds
; Manganese compounds
; Manganese removal (water treatment)
; Organic compounds
; Oxidants
; Oxidation
; Potassium
; Water treatment
; Cell integrity
; Cyanobacterial cells
; Membrane integrity
; Microcystins
; Microcystis aeruginosa
; Natural organic matters
; Potassium ferrate
; Water treatment process
; Reservoirs (water)
; disinfectant agent
; manganese
; microcystin
; organic matter
; oxidizing agent
; potassium derivative
; potassium ferrate
; toxin
; unclassified drug
; fresh water
; iron derivative
; oxidizing agent
; potassium ferrate
; cells and cell components
; cyanobacterium
; disinfection
; EDTA
; manganese
; organic matter
; oxidation
; toxin
; water treatment
; Article
; bacterial cell
; controlled study
; cyanobacterium
; cytolysis
; environmental impact
; evaluation study
; Microcystis aeruginosa
; nonhuman
; oxidation
; priority journal
; simulation
; waste component removal
; water management
; water quality
; comparative study
; cyanobacterium
; Microcystis
; procedures
; Cyanobacteria
; Microcystis aeruginosa
; Cyanobacteria
; Disinfectants
; Fresh Water
; Iron Compounds
; Microcystins
; Microcystis
; Oxidants
; Potassium Compounds
; Water Purification
英文摘要: Potassium ferrate (K2FeO4) is an effective oxidant that may be used as a pre- or post-oxidant in the purification of source water with cyanobacterial issues. To provide a better basis for the application of this oxidant during water treatment processes, the impacts of K2FeO4 on the cell viability of Microcystis aeruginosa and the fate of associated microcystins (MCs) were investigated in various water matrices. The results showed that a water matrix can significantly affect the effectiveness of K2FeO4 on cyanobacteria inactivation. 10 mg L−1 K2FeO4 induced significant cell lysis of M. aeruginosa in Ran Yi Tan Reservoir (RYTR) water while the membrane integrity was relatively unaffected in ASM-1 media and Cheng Kung Lake (CKL) water. The reduced efficiency of K2FeO4 oxidation may be attributed to the manganese (Mn2+) and organic matter (Ethylenediaminetetraacetic acid, EDTA) in the ASM-1 media and high concentrations of natural organic matters (NOMs) in the CKL water. A delayed Chick-Watson model was applied to simulate the experimental data for cyanobacterial cell rupture, and the cell lysis rates of the M. aeruginosa samples were determined to be 128-242 M−1 s−1 (mol L−1 s−1). Generally, no significant increases in extracellular MCs were observed in the three different waters, even in the RYTR water where the membrane integrity of the cyanobacterial cells was severely disrupted. Therefore, K2FeO4 could be a potential pre-oxidant to enhance subsequent treatments for cyanobacteria removal without affecting the cell integrity, or could serve as a post-oxidant to inactivate cyanobacterial cells and degrade MCs effectively, depending on the specific water matrix. © 2017 Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/113087
Appears in Collections: 气候减缓与适应
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作者单位: Ocean College, Zhejiang University, Hangzhou, Zhejiang 310058, China; Department of Environmental Engineering, National Cheng Kung University, Tainan, 70101, Taiwan
Recommended Citation:
Fan J.,Lin B.-H.,Chang C.-W.,et al. Evaluation of potassium ferrate as an alternative disinfectant on cyanobacteria inactivation and associated toxin fate in various waters[J]. Water Research,2018-01-01,129