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http://dx.doi.org/10.7733/jnfcwt.2017.15.1.27

Effect of Alkyl Length of Cationic Surfactants on Desorption of Cs From Contaminated Clay  

Kim, Bo Hyun (Korea Atomic Energy Research Institute)
Park, Chan Woo (Korea Atomic Energy Research Institute)
Yang, Hee-Man (Korea Atomic Energy Research Institute)
Seo, Bum-Kyoung (Korea Atomic Energy Research Institute)
Park, So-Jin (Chungnam National University)
Lee, Kune-Woo (Korea Atomic Energy Research Institute)
Publication Information
Journal of Nuclear Fuel Cycle and Waste Technology(JNFCWT) / v.15, no.1, 2017 , pp. 27-34 More about this Journal
Abstract
In this study, desorption characteristics of Cs from clay according to the hydrophobic alkyl chain length of the cationic surfactant were investigated. Alkyltrimethylammonium bromide was used as a cationic surfactant, and the length of the hydrophobic alkyl chain of the cationic surfactant was varied from -octyl to -cetyl. The adsorbed amount of the cationic surfactant on montmorillonite increased with the length of the hydrophobic alkyl chain, and intercalation of the cationic surfactant into the clay interlayer increased the interlayer distances. The Cs removal efficiency was also enhanced with increasing alkyl chain length, and the cationic surfactant with the cetyl group showed a maximum Cs removal efficiency of $992{\pm}2.9%$.
Keywords
Clay; Cs; Desorption; Surfactant; Alky chain;
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