Particle speciation analysis of inorganic polymer flocculants: an examination by photon correlation spectroscopy

被引：20
|
作者：
Wang, DS [1 ]
Tang, HX [1 ]
Cao, FC [1 ]
机构：
[1] Chinese Acad Sci, Ecoenvironm Sci Res Ctr, State Key Lab Environm Aquat Chem, Beijing 100085, Peoples R China
来源：
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS | 2000年 / 166卷 / 1-3期
基金：
中国国家自然科学基金;
关键词：
PCS; inorganic polymer flocculant; particle size distribution; coagulation;
D O I：
10.1016/S0927-7757(99)00420-3
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
The particle size distribution for two typical kinds of inorganic polymer flocculants is characterized comparatively by using photon correlation spectroscopy (PCS). The experimental results indicate that there exists large difference in particle speciation distribution between PFCl and PACl prepared under similar conditions. The particle size of PFCl samples range in a narrow distribution. Their mean effective hydrodynamic diameters calculated by translational diffusion coefficient are between 5 and 11 nm. For PACl samples at certain basicity, no visible particle species can be determined. At high basicity, both laboratory prepared and commercial products, show a bimodal distribution: one in 2-5 nm and the other ranges in several decades of nm with wide distribution. The latter may be colloidal aluminum hydroxide and also some aggregates of polymers. (C) 2000 Elsevier Science B.V. All rights reserved.
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页码：27 / 32
页数：6
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