A new indicator of ionic polymeric flocculants for the removal of heavy metals anions: Specific charge density

doi:10.1002/wer.1126

	A new indicator of ionic polymeric flocculants for the removal of heavy metals anions: Specific charge density
	Hou, Rong 1,2; Zhao, He 1; Cao, Hongbin 1; Ning, Jingheng 2
刊名	WATER ENVIRONMENT RESEARCH
	2019-09-01
卷号	91 期号:9 页码:888-897
关键词	Anionic pollutants Flocculation Ionic polymer flocculants PDADMAC Removal efficiency Specific charge density
ISSN号	1061-4303
DOI	10.1002/wer.1126
英文摘要	Ionic polymeric flocculants, as useful and widely used technology, have been applied for heavy metal pollution control. However, although molecular weight is an important indicator, it is not a comprehensive indicator for evaluating flocculation efficiencies of ionic flocculants. Herein, specific charge density (SCD), defined as charge density of unit molecular weight, is a new indicator to evaluate the performance of ionic polymer flocculants. Polydiallyldimethylammonium chloride (PDADMAC) as coagulant aid is investigated to flocculate different anionic pollutants. The results indicate that PDADMAC with a high SCD value could benefit to the flocculation efficiency of anionic pollutants. According to statistical analysis, the average pollutants residual could decrease to 8.64%-32.27% by that with high SCD value, especially for high valence pollutants with a decrease from 58.97%-60.40% to 27.35%-32.27%. The indicator of SCD values not only could characterize the performance of polymer flocculants but also provide a new sight of the flocculation mechanism of polymeric flocculants. (C) 2019 Water Environment Federation
资助项目	Major Science and Technology Program for Water Pollution Control and Treatment[2017ZX07402001] ; National Natural Science Foundation of China[51425405] ; National Natural Science Foundation of China[51378487] ; Youth Innovation Promotion Association, CAS[2014037] ; Natural Science Foundation of Hunan Province[2018JJ2424]
WOS关键词	KRAFT LIGNIN-ACRYLAMIDE ; MOLECULAR-WEIGHT ; DIALLYLDIMETHYLAMMONIUM CHLORIDE ; CHAIN ARCHITECTURES ; WASTE-WATER ; HUMIC-ACID ; CLAY ; CYCLOPOLYMERIZATION ; COAGULATION
WOS研究方向	Engineering ; Environmental Sciences & Ecology ; Marine & Freshwater Biology ; Water Resources
语种	英语
出版者	WILEY
WOS记录号	WOS:000480283200007
资助机构	Major Science and Technology Program for Water Pollution Control and Treatment ; National Natural Science Foundation of China ; Youth Innovation Promotion Association, CAS ; Natural Science Foundation of Hunan Province
内容类型	期刊论文
源URL	[http://ir.ipe.ac.cn/handle/122111/30625]
专题	中国科学院过程工程研究所
通讯作者	Zhao, He; Ning, Jingheng
作者单位	1.Chinese Acad Sci, Beijing Engn Res Ctr Proc Pollut Control, Inst Proc Engn, Key Lab Green Proc & Engn, Beijing, Peoples R China 2.Changsha Univ Sci & Technol, Sch Chem & Biol Engn, Changsha, Hunan, Peoples R China
推荐引用方式 GB/T 7714	Hou, Rong,Zhao, He,Cao, Hongbin,et al. A new indicator of ionic polymeric flocculants for the removal of heavy metals anions: Specific charge density[J]. WATER ENVIRONMENT RESEARCH,2019,91(9):888-897.
APA	Hou, Rong,Zhao, He,Cao, Hongbin,&Ning, Jingheng.(2019).A new indicator of ionic polymeric flocculants for the removal of heavy metals anions: Specific charge density.WATER ENVIRONMENT RESEARCH,91(9),888-897.
MLA	Hou, Rong,et al."A new indicator of ionic polymeric flocculants for the removal of heavy metals anions: Specific charge density".WATER ENVIRONMENT RESEARCH 91.9(2019):888-897.