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Preparation of Activated Carbons Using Biomass  

Kim, Hak-Hee (Department of Biological and Chemical Engineering, Sun Moon University)
Park, Ryang-Han (Department of Biological and Chemical Engineering, Sun Moon University)
Kim, Young-Jae (Department of Biological and Chemical Engineering, Sun Moon University)
Publication Information
Applied Chemistry for Engineering / v.15, no.8, 2004 , pp. 870-874 More about this Journal
Abstract
Activated carbons were prepared from quartz porphyry, coffee waste and rice hull by chemical activation with NaOH, KOH, $ZnCl_2\;and\;H_3PO_4$. To find an optimum manufacturing condition, independent variable such as quantities, activation agent, temperature, duration of firing, and carbonization were systematically varied. The most important factor in chemical activation was found to be the chemical ratio of activation agents. In this paper, BET surface areas of activated quartz porphyry, activated coffee char and activated rice hull char were measured at about 55{\sim}389\;m^2/g,\;975{\sim}1580\;m^2/g\;and\;610{\sim}1342\;m^2/g$, respectively. BET surface area of activated coffee char prepared by $ZnCl_2$ of 300 wt% was measured at the highest specific surface area among three different raw materials.
Keywords
activated carbon; BET; coffee waste; rice hull; chemical activation;
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