DOI: 10.1016/j.watres.2018.03.005
Scopus记录号: 2-s2.0-85043385972
论文题名: Fe(II)-regulated moderate pre-oxidation of Microcystis aeruginosa and formation of size-controlled algae flocs for efficient flotation of algae cell and organic matter
作者: Qi J. ; Lan H. ; Liu R. ; Liu H. ; Qu J.
刊名: Water Research
ISSN: 431354
出版年: 2018
卷: 137 起始页码: 57
结束页码: 63
语种: 英语
英文关键词: Al coagulation
; Fe(II)-Regulated pretreatment
; Flotation
; Microcystis aeruginosa removal
; Size-controlled algae flocs
Scopus关键词: Algae
; Algae control
; Aluminum
; Bacteria
; Biogeochemistry
; Cells
; Chemical water treatment
; Coagulation
; Cytology
; Efficiency
; Flotation
; Hydrolysis
; Manganese compounds
; Organic compounds
; Oxidation
; Potash
; Coagulation process
; Coagulation/flocculation
; Cyanobacterial cells
; Dissolved organic matters
; Flotation efficiency
; Microcystis aeruginosa
; Pre-Treatment
; Size-controlled algae flocs
; Iron compounds
; aluminum
; dissolved organic matter
; ferric ion
; ferrous ion
; organic matter
; water
; iron
; permanganate potassium
; alga
; cell
; coagulation
; cyanobacterium
; dissolved organic matter
; efficiency measurement
; flocculation
; hydrolysis
; iron
; organic matter
; oxidation
; pollutant removal
; size
; water treatment
; Article
; bacterial cell
; controlled study
; cross linking
; flocculation
; flotation
; hydrolysis
; Microcystis aeruginosa
; nonhuman
; oxidation
; priority journal
; water treatment
; chemistry
; cyanobacterium
; devices
; drug effect
; equipment design
; eutrophication
; flocculation
; metabolism
; Microcystis
; oxidation reduction reaction
; procedures
; water management
; algae
; Cyanobacteria
; Microcystis aeruginosa
; Cyanobacteria
; Equipment Design
; Eutrophication
; Flocculation
; Hydrolysis
; Iron
; Microcystis
; Oxidation-Reduction
; Potassium Permanganate
; Water Purification
英文摘要: The coagulation/flocculation/flotation (C/F/F) process is becoming a popular method for algae-laden water treatment. However, the efficiency of flotation is highly dependent on the ability of the preceding coagulation/flocculation process to form flocculated algae flocs. This study aims to improve the Microcystis aeruginosa flotation efficiency from algae cell and organic matter aspects by applying Fe(II)-regulated pretreatment enhanced Al coagulation process. The ability of the C/F/F process to remove cyanobacterial cells can be enhanced from 8% to 99% at a Fe(II) dose of 30 μM. The Al dose needed can be reduced by more than half while achieving successful flotation. The introduced Fe(II) after KMnO4 can not only realize moderate pre-oxidation of cyanobacterial cells, but also form in-situ Fe(III). The DOC value can also be decreased significantly due to the formation of in-situ Fe(III), which is more efficient in dissolved organic matter (DOM) removal compared with pre-formed Fe(III). In addition, the gradually hydrolyzed in-situ Fe(III) can facilitate the hydrolysis of Al as a dual-coagulant and promote the clustering and cross-linking of Al hydrolyzates, which can enhance the formation of size-controlled algae flocs. Finally, the size-controlled algae flocs can be effectively floated by the bubbles released in the flotation process due to the efficient collision and attachment between flocs and bubbles. Therefore, the efficient flotation of algae cell and organic matter can be realized by the Fe(II) regulated moderate pre-oxidation of M. aeruginosa and formation of size-controlled algae flocs. © 2018 Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/112840
Appears in Collections: 气候减缓与适应
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作者单位: Key Laboratory of Drinking Water Science and Technology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing, 100085, China; State Key Joint Laboratory of Environmental Simulation and Pollution Control, School of Environment, Tsinghua University, Beijing, 100084, China; University of Chinese Academy of Sciences, Beijing, 100049, China
Recommended Citation:
Qi J.,Lan H.,Liu R.,et al. Fe(II)-regulated moderate pre-oxidation of Microcystis aeruginosa and formation of size-controlled algae flocs for efficient flotation of algae cell and organic matter[J]. Water Research,2018-01-01,137