Al-Ferron kinetics and quantitative calculation of Al(III) species in polyaluminum chloride coagulants

被引：81

作者：

Zhou, WZ ^{[1
]}

Gao, BY ^{[1
]}

Yue, QY ^{[1
]}

Liu, LL ^{[1
]}

Wang, Y ^{[1
]}

机构：

[1] Shandong Univ, Dept Environm Sci & Engn, Jinan 250100, Peoples R China

来源：

COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS | 2006年 / 278卷 / 1-3期

关键词：

high-concentration polyaluminum chloride; sulfate; silicate; Al-ferron kinetics; Al species calculation;

D O I：

10.1016/j.colsurfa.2005.12.024

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 effect of prehydrolysis and the presence of silicate and/or sulfate on polyaluminum coagulants were investigated. A new Al-Ferron kinetics method was developed to monitor and calculate Al speciation. The results showed that the Al-Ferron kinetics fit a binary pseudo first order rate equation. Sulfate and silicate had different influences on Al-Ferron kinetics. Al-Ferron complexation timed spectrophotometry is the commonly used method of determining Al speciation but this new Al-Ferron kinetics calculation method shows different species distributions. For all the coagulants except polyaluminum silicate chloride (PASiC), the new method yielded higher Al-b and lower Al-a values. The Al(HI) chemical species calculated using Al-Ferron kinetics is more consistent with the experimental results. (c) 2005 Elsevier B.V. All rights reserved.

引用

页码：235 / 240

页数：6

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