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http://dx.doi.org/10.5572/KOSAE.2014.30.1.068

Adsorption of Low-level CO2using Activated Carbon Pellet with Glycine Metal Salt Impregnation  

Lim, Yun Hui (Department of Applied Environmental Science, Center for Environmental Studies, Kyung Hee University)
Adelodun, A.A. (Department of Applied Environmental Science, Center for Environmental Studies, Kyung Hee University)
Jo, Young Min (Department of Applied Environmental Science, Center for Environmental Studies, Kyung Hee University)
Publication Information
Journal of Korean Society for Atmospheric Environment / v.30, no.1, 2014 , pp. 68-76 More about this Journal
Abstract
The present study has evaluated the $CO_2$ adsorption amount of activated carbon pellets (AC). Coconut shell based test AC were modified with surface impregnation of glycine, glycine metal salts and monoethanolamine for low level $CO_2$ (3000 ppm) adsorption. Physical and chemical properties of prepared adsorbents were analyzed and the adsorbed amount of $CO_2$ was investigated by using pure and 3,000 ppm $CO_2$ levels. The impregnation of nitrogen functionalities was verified by XPS analysis. The adsorption capacity for pure $CO_2$ gas was found to reach upto 3.08 mmol/g by AC-LiG (Activated carbon-Lithium glycinate), which has the largest specific surface area ($1026.9m^2/g$). As for low level $CO_2$ flow the primary amine impregnated adsorbent showed 0.26 mmol/g of adsorption amount, indicating the highest selectivity. An adsorbent with potassium-glycine salts (AC-KG, Activated carbon-Potassium glycinate) instead of amine presented with 0.12 mmol/g of adsorption capacity, which was higher than that of raw activated carbon granules (0.016 mmol/g).
Keywords
$CO_2$ adsorption; Glycine; Alkali metal; Monoethanolamine; Activated carbon;
Citations & Related Records
Times Cited By KSCI : 11  (Citation Analysis)
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