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http://dx.doi.org/10.14478/ace.2018.1098

A Study on the Cation Extraction and Separation in Cement Industrial By-products for Applications to the Carbonation Process  

Lee, Ye Hwan (Department of Environmental Energy Engineering, Graduate School of Kyonggi University)
Han, Dong Hee (Department of Environmental Energy Engineering, Graduate School of Kyonggi University)
Lee, Sang Moon (Department of Environmental Energy Engineering, Kyonggi University)
Eom, Han Ki (Department of Environmental Energy Engineering, Kyonggi University)
Kim, Sung Su (Department of Environmental Energy Engineering, Kyonggi University)
Publication Information
Applied Chemistry for Engineering / v.30, no.1, 2019 , pp. 34-38 More about this Journal
Abstract
A cement industrial by-product was used as a Ca source for the carbonation process. It was confirmed that the most of cement industrial by-products was composed of CaO and KCl through ICP and XRD analyses. The optimal extractant type and concentration was 1.5 M of hydrochloric acid, and the solid/liquid ratio was 0.1 g/mL. It was assumed that the cation extraction efficiency was dependent of the pair ions and their binding formation and also the solubility from extraction efficiency results by varing extractants. After extraction process, it was also confirmed that the cation could be selectively separated from the solution with respect to the kind of additives and the injection order. When NaOH was injected into the solution to control pH values ranging from 9.5 and 13, impurities and $Ca(OH)_2$ were precipitated, whereas the separated K ion was precipitated in the form of KCl under the injected $C_2H_5OH$.
Keywords
Mineral carbonation; Industry by-product; Calcium ion; Extraction; Separation;
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Times Cited By KSCI : 2  (Citation Analysis)
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