, Volume 7, Issue 2, pp 91-103

First online:

Adsorption Equilibrium and Dynamics of Methyl Iodide in a Silver Ion-Exchanged Zeolite Column at High Temperatures

  • Byung Seon ChoiAffiliated withKorea Atomic Energy Research Institute
  • , Geun Il ParkAffiliated withKorea Atomic Energy Research Institute
  • , Joon Hyung KimAffiliated withKorea Atomic Energy Research Institute
  • , Jae Wook LeeAffiliated withDepartment of Chemical Engineering, Seonam University
  • , Seung Kon RyuAffiliated withDepartment of Chemical Engineering, Chungnam National University

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An extensive evaluation was carried out to determine the optimal silver ion-exchanged level for the removal of methyl iodide at high temperatures up to 400°C. Based on the degree of silver utilization, the optimal silver loading and temperature were about 10 wt% and 175°C, respectively. The physical and chemical properties of silver ion-exchanged zeolite were characterized by instrumental analysis such as BET, TG/DTA and SEM-EDS. Adsorption dynamics was also studied at different temperatures, and methyl iodide concentrations. A simple dynamic model was formulated by employing the linear driving force (LDF) approximation inside adsorbent particles, and the nonisothermal Langmuir-Freundlich equation. The model equations were solved numerically by an orthogonal collocation method. The proposed dynamic model satisfactorily simulated the experimental breakthrough results.

high temperature methyl iodide silver ion-exchanged zeolite adsorption equilibrium dynamic model