Dissolution of Slightly Soluble Sulfate in a Stirred Tank Dissolution of CaSO4 in HCI and EDTA systems

被引：0
作者：
Sasakura, Toshisuke [1 ]
Ohi, Nobuichi [1 ]
机构：
[1] Dept. of Chem. Eng., Toyama Univ.
来源：
Kagaku Kogaku Ronbunshu | 1978年 / 5卷 / 01期
关键词：
Compendex;
D O I：
10.1252/kakoronbunshu.5.85
中图分类号：
学科分类号：
摘要：
The dissolution processes of a slightly soluble sulfate, CaS04, in two kinds of aqueous solution of hydrochloric acid and ethylenediaminetetraacetic acid (EDTA) adjusted to pH of 10 were studied experimentally on the basis of mass transfer with chemical reaction between solid and liquid phases. The effects of acid concentration on the diffusion flux of Ca2+ for HC1 system are discussed and the reaction factors are found to depend remarkably on the concentration driving force represented by the solublility of CaS04 in hydrochloric acid solution. The dissolution rates for EDTA system were also promoted by reactant concentration and the results were fairly well explained by correlating with the reaction factors for mass transfer with an instantaneous irreversible 2nd-order reaction. The concentration-time curves also derived from integral analysis of the rate equations for both systems were compared with the experimental data. © 1979, The Society of Chemical Engineers, Japan. All rights reserved.
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页码：85 / 89
页数：4
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