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A new indicator of ionic polymeric flocculants for the removal of heavy metals anions: Specific charge density
Hou, Rong1,2; Zhao, He2; Cao, Hongbin2; Ning, Jingheng1
2019-09-01
Source PublicationWATER ENVIRONMENT RESEARCH
ISSN1061-4303
Volume91Issue:9Pages:888-897
Abstract

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

KeywordAnionic Pollutants Flocculation Ionic Polymer Flocculants Pdadmac Removal Efficiency Specific Charge Density
DOI10.1002/wer.1126
Language英语
WOS KeywordKraft Lignin-acrylamide ; Molecular-weight ; Diallyldimethylammonium Chloride ; Chain Architectures ; Waste-water ; Humic-acid ; Clay ; Cyclopolymerization ; Coagulation
Funding ProjectMajor 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 Research AreaEngineering ; Environmental Sciences & Ecology ; Marine & Freshwater Biology ; Water Resources
WOS SubjectEngineering, Environmental ; Environmental Sciences ; Limnology ; Water Resources
Funding OrganizationMajor 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
WOS IDWOS:000480283200007
PublisherWILEY
Citation statistics
Cited Times:1[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.ipe.ac.cn/handle/122111/30626
Collection中国科学院过程工程研究所
Corresponding AuthorZhao, He; Ning, Jingheng
Affiliation1.Changsha Univ Sci & Technol, Sch Chem & Biol Engn, Changsha, Hunan, Peoples R China
2.Chinese Acad Sci, Beijing Engn Res Ctr Proc Pollut Control, Inst Proc Engn, Key Lab Green Proc & Engn, Beijing, Peoples R China
Recommended Citation
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.
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