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Speciation stability of inorganic polymer flocculant-PACl
Wang, DS; Sun, W; Xu, Y; Tang, HX; Gregory, J
2004
Source PublicationCOLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
Volume243Issue:2015-01-03Pages:1-10
AbstractThe speciation distribution, physico-chemical properties of coagulants, and principles for their further species transformation under various water and wastewater treatment conditions are of paramount importance in coagulation processes. In this paper, the effect of various factors on the speciation transformation of typical inorganic polymer flocculants (IPFs)-polyaluminum chloride (PACl) was investigated by ferron assay. Dilution and co-existing electrolyte exhibit little effect on the speciation distribution of PACl after dosing. Solution pH has significant effect on the species transformation, depending mainly on OH/AI ratio (denoted as B value). The lower the B value, the more significant the effect pH exhibits. A large amount of Al(b), i.e. rapid reactive species by ferron assay, could form for alum and PACl(0) in the weak acidic pH range, which transforms quickly into Al(c) after aging. PACl, at high B values, maintains high speciation stability under the various conditions investigated. The ferron method provides a measure to explain the reactivity of different species with ferron. The classification of three kinds of aluminum hydrolysis species based on kinetic differences needs further modification. (C) 2004 Elsevier B.V. All rights reserved.
Department环境水质学国家重点实验室
KeywordPacl Speciation Stability Ferron Method Coagulation Mechanism
WOS Research AreaChemistry
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Document Type期刊论文
Identifierhttps://ir.rcees.ac.cn/handle/311016/23546
Collection环境水质学国家重点实验室
Recommended Citation
GB/T 7714
Wang, DS,Sun, W,Xu, Y,et al. Speciation stability of inorganic polymer flocculant-PACl[J]. COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS,2004,243(2015-01-03):1-10.
APA Wang, DS,Sun, W,Xu, Y,Tang, HX,&Gregory, J.(2004).Speciation stability of inorganic polymer flocculant-PACl.COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS,243(2015-01-03),1-10.
MLA Wang, DS,et al."Speciation stability of inorganic polymer flocculant-PACl".COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS 243.2015-01-03(2004):1-10.
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