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http://dx.doi.org/10.5322/JES.2008.17.5.493

Adsorption and Desorption Characteristics of Toluene in Modified Activated Carbon Using Microwave Irradiation  

Kim, Beom-Jun (Department of Energy and Environmental Science, Keimyung University)
Choi, Sung-Woo (Department of Energy and Environmental Science, Keimyung University)
Publication Information
Journal of Environmental Science International / v.17, no.5, 2008 , pp. 493-500 More about this Journal
Abstract
This paper describes the adsorption/desorpton efficiency of a modified activated carbon by irradiated microwave to treat toluene. By employing microwave energy, the regeneration time was considerably shortened compared with conventional thermal heating regeneration. New adsorbent called ACB (Activated Carbon-Bentonite) was prepared from powder activated carbon with mixing bentonite as a binder. Specific surface area, average pore size and total pore volume of ACB were calculated from the nitrogen adsorption/desorption isotherm. The surface of ACB was characterized with scanning electron microscope(SEM). The results showed that the specific surface area, total pore volume, average pore size of ABC was not influenced by regenerating cycle with microwave irradiation. Toluene was adsorbed onto ACB which desorbed by MW irradiation. Absorption capacity of ACB was 0.117 $g_{toluene}/g_{ACB}$. Desorption efficiency of toluene increased as higher microwave output was applied.
Keywords
Microwave; Adsorption; Desorption; BET; SEM; Regeneration;
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