Theoretical and Experimental Analysis of Reactive Adsorption in a Packed Bed: Parallel and Branched Pore-Diffusion Model Approach

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• 作者：Manisha Sharma ; Raj K. Vyas ; Kailash Singh
• 刊名：Industrial & Engineering Chemistry Research
• 出版年：2016
• 出版时间：May 25, 2016
• 年：2016
• 卷：55
• 期：20
• 页码：5945-5954
• 全文大小：499K
• 年卷期：0
• ISSN：1520-5045

文摘

In the present study, a mathematical model of reactive adsorption in a packed bed has been proposed based on the parallel and branched pore-diffusion approach. For this purpose, reactive adsorption of phenol onto prepared cobalt nanoparticles impregnated on granular activated carbon in the presence of oxone has been investigated. The model, in addition to axial dispersion, takes into account external-film mass transfer and intraparticle diffusion. Freundlich isotherm was found to best represent the adsorption equilibrium. Predicted breakthrough curves fitted well to the experimental data. The effects of the parameters, viz., initial phenol concentration, bed height, and feed flow rate, on the breakthrough curve have also been investigated. At optimal conditions, reactive adsorption exhibited 55% more removal and high breakthrough time compared to pure adsorption. The developed model may be used for the design of a reactive adsorption column for the removal of other contaminants using adsorbents having similar pore structure.