Adsorption Equilibrium and Dynamics of Methyl Iodide in a Silver Ion-Exchanged Zeolite Column at High Temperatures
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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.
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Volume 7, Issue 2 , pp 91-103
- Cover Date
- Print ISSN
- Online ISSN
- Kluwer Academic Publishers
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- high temperature
- methyl iodide
- silver ion-exchanged zeolite
- adsorption equilibrium
- dynamic model
- Industry Sectors
- Author Affiliations
- 1. Korea Atomic Energy Research Institute, Yusung, P.O. Box, 105, Taejon, Korea
- 2. Department of Chemical Engineering, Seonam University, Namwon, 590-711, Korea
- 3. Department of Chemical Engineering, Chungnam National University, Taejon, 305-704, Korea