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http://dx.doi.org/10.14478/ace.2015.1123

Comparison of Adsorption Performance of Ammonia and Formaldehyde Gas Using Adsorbents Prepared from Water Treatment Sludge and Impregnated Activated Carbon  

Lee, Choul Ho (Department of Chemical Engineering, Kongju National University)
Park, Nayoung (Department of Chemical Engineering, Kongju National University)
Kim, Goun (Department of Chemical Engineering, Kongju National University)
Jeon, Jong-Ki (Department of Chemical Engineering, Kongju National University)
Publication Information
Applied Chemistry for Engineering / v.27, no.1, 2016 , pp. 62-67 More about this Journal
Abstract
In this study, a pellet-type adsorbent was prepared by using the water-treatment sludge as a raw material, and its physical and chemical properties were analyzed through $N_2$-adsorption, XRD, XRF, and $NH_3$-TPD measurements. Adsorption performance for gaseous ammonia and formaldehyde was compared between the pellet-type adsorbents prepared from water-treatment sludge and the impregnated activated carbon. Although the surface area and pore volume of the pellet-type adsorbent produced from water-treatment sludge were much smaller than those of the impregnated activated carbon, the pellet-type adsorbent produced from water-treatment sludge could adsorb ammonia gas even more than that of using the impregnated activated carbon. The pellet-type adsorbent prepared from water-treatment sludge showed a superior adsorption capacity for ammonia which can be explained by chemical adsorption ascribed to the higher amount of acid sites on the pellet-type adsorbent prepared from water-treatment sludge. In the case of formaldehyde adsorption, the impregnated activated carbon was far superior to the adsorbent made from the water-treatment sludge, which can be attributed to the increased surface area of the impregnated activated carbon.
Keywords
water-treatment sludge; impregnated activated carbon; gas adsorption; ammonia; formaldehyde;
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Times Cited By KSCI : 5  (Citation Analysis)
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