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http://dx.doi.org/10.7464/ksct.2015.21.1.022

Characteristics of Heat Stable Salts Treatment Using Anion Exchange Resins in CO2 Absorption Process  

Park, Kyung-Bin (Department of Civil and Environmental Engineering, Pusan National University)
Cho, Jun-Hyoung (Department of Civil and Environmental Engineering, Pusan National University)
Jeon, Soo-Bin (National Core Research Center for Hybrid Materials Solution, Pusan National University)
Lim, You-Young (Department of Civil and Environmental Engineering, Pusan National University)
OH, Kwang-Joong (Department of Civil and Environmental Engineering, Pusan National University)
Publication Information
Clean Technology / v.21, no.1, 2015 , pp. 22-32 More about this Journal
Abstract
In this study, we studied the characteristics of ion exchange for treatment of HSS (heat stable salts) which cause performance reduction in CO2 gas capture amine solution using anion exchange resins. The optimum HSS removal efficiency, 96.1% was obtained when using strong base anion exchange resin SAR10 at dosage 0.05 g/mL, 316 K, pH 12 and the best resin regeneration efficiency, 78.8% was obtained using NaOH solution of 3 M at 316 K. The adsorption data were described well by the Freundlich model and the sorption intensity(n) was 2.0951 lying within the range of favorable adsorption. The adsorption selectivity coefficients were increased by increasing valences and size of ion and desorption selectivity coefficients showed a contradictory tendency to adsorption selectivity coefficients. By continuous HSS removal experiments, 13.3 BV of HSS contaminated solution was effectively treated and the optimum NaOH solution consumption was 5.2 BV to regenerate resins.
Keywords
$CO_2$ adsorption process; Heat stable salts; Anion exchange resin;
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