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http://dx.doi.org/10.12925/jkocs.2019.36.4.1088

A study on the optimization of Ion Exchange Resin operating conditions for removal of KCl from CKD extract  

Jang, Younghee (Department of Environmental Energy Engineering, Graduate school of Kyonggi university)
Lee, Ye Hwan (Department of Environmental Energy Engineering, Graduate school of Kyonggi university)
Kim, Jiyu (Department of Environmental Energy Engineering, Kyonggi university)
Park, Il Gun (Pyunghwa Engineering Consultants)
Lee, Ju-Yeol (Anytech)
Park, Byung Hyun (Anytech)
Kim, Seong-Cheol (Department of Environmental Energy Engineering, Kyonggi university)
Lee, Sang Moon (Department of Environmental Energy Engineering, Kyonggi university)
Kim, Sung Su (Department of Environmental Energy Engineering, Kyonggi university)
Publication Information
Journal of the Korean Applied Science and Technology / v.36, no.4, 2019 , pp. 1088-1095 More about this Journal
Abstract
The CKD extract is wastewater from which KCl in CKD has been removed to reuse CKD as a cement raw material, and tried to reuse no extracts due to problems such as wastewater treatment facility expansion. As a result of removing KCl by the ion exchange method, the pH of the extract after ion exchange decreased from 12.7 to less than pH 2, and it was confirmed that H+ of the cation exchange resin was dissolved in the extract through ion exchange. In addition, the selectivity of the ion exchange was removed in the order of Ca2+, K+, it was determined that the increase in the contact time to remove the K+ ions. The batch system had a contact time of 6 times or more, compared to the continuous system, and showed 4 times of K+ removal efficiency and 7 times of Cl- removal efficiency. It was showed by analyzing the pH of the extract that more H+ of the cation exchange resin was extracted than OH- of anion exchange resin as the pH of the extract was changed.
Keywords
extraction; ion exchange resin; pH; cement kiln dust; KCl;
Citations & Related Records
Times Cited By KSCI : 3  (Citation Analysis)
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