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http://dx.doi.org/10.17137/korrae.2017.25.3.63

Optimization of Washing Process for the Recycling of Potassium in the Manufacturing of Activated Carbon  

Lee, Gi-bbum (Center for Plant Engineering, Institute for Advanced Engineering)
Jung, Hee-Suk (Center for Plant Engineering, Institute for Advanced Engineering)
Hong, Bum-ui (Center for Plant Engineering, Institute for Advanced Engineering)
Kim, Seokhwi (Center for Plant Engineering, Institute for Advanced Engineering)
Choi, Suk-soon (Department of Biological and Environmental Engineering, Semyung University)
Publication Information
Journal of the Korea Organic Resources Recycling Association / v.25, no.3, 2017 , pp. 63-71 More about this Journal
Abstract
In this study, washing parameters such as washing time, agitation velocity, and cycles were optimized for high surface area of the activated carbon (AC) by KOH activation. Even though AC with high surface area showed at higher washing efficiency, over 90% on washing efficiency was regulated by the intra-particle diffusion due to high tortuosity of the pore structures on AC. In addition, we can obtain $K_2CO_3$ through the evaporation from the wastewater and use it for chemical activation of AC. The AC with $K_2CO_3$ activation has specific surface area values of $2,219m^2/g$ equally that of KOH activation. Considering that $K_2CO_3$ is an effective alternative as a KOH, our results demonstrated that the process by recycling wastewater on AC production could be applicable for near-zero wastes.
Keywords
Activated carbon; Washing; BET; KOH; $K_2CO_3$; Recycle;
Citations & Related Records
Times Cited By KSCI : 3  (Citation Analysis)
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