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http://dx.doi.org/10.17137/Korrae.2014.22.2.27

Adsorption Properties of Cadmium onto Granite Soil and Calcium Sand  

Lee, Myoung-Eun (Department of Environmental Engineering, Green Technology Institute(GTI), Gyeongnam National University of Science and Technology(GNTECH))
Kwon, Min-Seok (Department of Civil Engineering, Kyunghee University)
Ahn, Yong-Tae (Department of Energy Engineering, GNTECH)
Chung, Jae-Woo (Department of Environmental Engineering, Green Technology Institute(GTI), Gyeongnam National University of Science and Technology(GNTECH))
Publication Information
Journal of the Korea Organic Resources Recycling Association / v.22, no.2, 2014 , pp. 27-34 More about this Journal
Abstract
Kinetic and isotherm properties of the cadmium adsorption onto calcium sand and granite soil were evaluated by batch experiments. The pHs of calcium sand and granite soil were 9.51 and 6.33, respectively, showing that the precipitation of heavy metals can be occurred due to the increase of pH when the calcium sand is used as an adsorbent. The pseudo-second-order model described the adsorption kinetics satisfactory with correlation coefficients over 0.999. The equilibrium adsorption capacities of calcium sand and granite soil were 2.10 and 2.16 mg/g, respectively. The adsorption isotherm followed the Freundlich isotherm model, indicating the cadmium adsorbed onto the heterogeneous surfaces of adsorbents.
Keywords
Cadmium; Calcium Sand; Granite Soil; Kinetics; Isotherm;
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Times Cited By KSCI : 1  (Citation Analysis)
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