Enhanced removal for humic-acid (HA) and coagulation process using carbon nanotubes (CNTs)/polyalumium chloride (PACl) composites coagulants

CORC > 生态环境研究中心 > 中国科学院生态环境研究中心 > 环境水质学国家重点实验室

	Enhanced removal for humic-acid (HA) and coagulation process using carbon nanotubes (CNTs)/polyalumium chloride (PACl) composites coagulants
	Xu, Hui; Jiao, Ruyuan; Xiao, Feng; Wang, Dongsheng
刊名	COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
	2016-02-05
卷号	490 期号:0 页码:189-199
关键词	Humic acid Adsorption Coagulation CNTs Breakage and regrowth
英文摘要	Humic acid could react with chlorine during drinking water treatment process, and how to remove HA molecules more efficiently from source water is important for the safety of drinking water. In order to improve the coagulation performances, some new coagulants were prepared by adding different amounts of carbon nanotubes to the polyalumium chloride. In the coagulation process, the removal process for HA molecules may be caused by two mechanisms, one is the adsorption of CNTs, and the other is the coagulation process. When the concentration of DOC was increased to 4.0 mg/L under pH 5.0 (Al 0.1 mmol/L), the recovery factors decreased with increasing the concentration of CNTs. When the coagulant dosage was increased to 1.0 mmol/L (pH 5.0), there were no flocs formed in the coagulation process under three DOC concentrations due to larger positive charges. The coagulation performances under different solution pH conditions were also investigated. When the concentration of DOC was increased to 4.0 mg/L or 8.0 mg/L (pH 7.5), there would be large flocs formed at the beginning of slow mixing period, and the floc size decreased with increasing the coagulation period. (C) 2015 Published by Elsevier B.V.
收录类别	SCI
内容类型	期刊论文
源URL	[http://ir.rcees.ac.cn/handle/311016/36037]
专题	生态环境研究中心_环境水质学国家重点实验室
推荐引用方式 GB/T 7714	Xu, Hui,Jiao, Ruyuan,Xiao, Feng,et al. Enhanced removal for humic-acid (HA) and coagulation process using carbon nanotubes (CNTs)/polyalumium chloride (PACl) composites coagulants[J]. COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS,2016,490(0):189-199.
APA	Xu, Hui,Jiao, Ruyuan,Xiao, Feng,&Wang, Dongsheng.(2016).Enhanced removal for humic-acid (HA) and coagulation process using carbon nanotubes (CNTs)/polyalumium chloride (PACl) composites coagulants.COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS,490(0),189-199.
MLA	Xu, Hui,et al."Enhanced removal for humic-acid (HA) and coagulation process using carbon nanotubes (CNTs)/polyalumium chloride (PACl) composites coagulants".COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS 490.0(2016):189-199.