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KMID : 1024520000090020145
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Journal of the Environmental Sciences
2000 Volume.9 No. 2 p.145 ~ p.149
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Adsorption characteristics of SO₂ on Vermi Cast
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Jin Chun-Ji
Ko Kyoung-Suk
Ahn Chul-Woo
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Abstract
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The purpose of this study was to determine whether Vermi Cast could be used effectively to remove from flue gas, and then to investigate optimum adsorption conditions. The Vermi Cast used as adsorbent was mechanically screened with 8~20 mesh sieve. The adsorption data for were regressed using the Freundlich isotherm. The fit was generally satisfactory (=0.945~0.982). With the temperature changes from 2 to 4, the constant k in Freundlich isotherm qe= , decreased from 1.409 at 2to 0.297 at 4, and the exponent 1/n were decreased from 0.343 to 0.134. With the bed depth changes from 10cm to 30cm, the adsorption capacity expressed as mmol of adsorbed per g of Vermi Cast increased from 0.247 to 0.381. Moisture content is an important parameter in the adsorbed were observed over 0.3mmol /g Vermi Cast. The best adsorption capacity was 0.487mmol /g Vermi Cast, and it was obtained with moisture content 37%, temperature 2. From the above results, ti might be concluded that Vermi Cast is effectively as a good adsorbent to remove from flue gas.
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KEYWORD
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vermi cast, adsorption, SO₂
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