Fe(II)-regulated moderate pre-oxidation of & IT;Microcystis aeruginosa & IT; and formation of size-controlled algae flocs for efficient flotation of algae cell and organic matter

CORC > 生态环境研究中心 > 中国科学院生态环境研究中心 > 中国科学院饮用水科学与技术重点实验室

	Fe(II)-regulated moderate pre-oxidation of & IT;Microcystis aeruginosa & IT; and formation of size-controlled algae flocs for efficient flotation of algae cell and organic matter
	Qu, Jiuhui; Liu, Huijuan; Liu, Ruiping; Lan, Huachun; Qi, Jing
刊名	WATER RESEARCH
	2018-06-15
卷号	137 页码:57-63
关键词	Microcystis aeruginosa removal Fe(II)-Regulated pretreatment Al coagulation Size-controlled algae flocs Flotation
ISSN号	0043-1354
文献子类	Article
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 mu M. 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. (C) 2018 Elsevier Ltd. All rights reserved.
内容类型	期刊论文
源URL	[http://ir.rcees.ac.cn/handle/311016/41366]
专题	生态环境研究中心_中国科学院饮用水科学与技术重点实验室
推荐引用方式 GB/T 7714	Qu, Jiuhui,Liu, Huijuan,Liu, Ruiping,et al. Fe(II)-regulated moderate pre-oxidation of & IT;Microcystis aeruginosa & IT; and formation of size-controlled algae flocs for efficient flotation of algae cell and organic matter[J]. WATER RESEARCH,2018,137:57-63.
APA	Qu, Jiuhui,Liu, Huijuan,Liu, Ruiping,Lan, Huachun,&Qi, Jing.(2018).Fe(II)-regulated moderate pre-oxidation of & IT;Microcystis aeruginosa & IT; and formation of size-controlled algae flocs for efficient flotation of algae cell and organic matter.WATER RESEARCH,137,57-63.
MLA	Qu, Jiuhui,et al."Fe(II)-regulated moderate pre-oxidation of & IT;Microcystis aeruginosa & IT; and formation of size-controlled algae flocs for efficient flotation of algae cell and organic matter".WATER RESEARCH 137(2018):57-63.