Adsorption studies for the removal of ammonia by thermally activated carbon. | [Science International • 2012]

Author(s):

1. Moinuddin Ghaur: Department of Chemical Engineering, COMSATS Institute of Information Technology Lahore, Pakistan

2. Muhammad Tahir: Department of Chemical Engineering, COMSATS Institute of Information Technology Lahore, Pakistan

3. Tauqeer Abbas: Department of Chemical Engineering, COMSATS Institute of Information Technology Lahore, Pakistan

4. M. Shehzad Khurram: Department of Chemical Engineering, COMSATS Institute of Information Technology Lahore, Pakistan

5. Khurram Shehzad: Department of Chemical Engineering, COMSATS Institute of Information Technology Lahore, Pakistan

Abstract:

The efficiency of charcoal fraction activated at temperature (°C) 50,100,150 and 200°C for 24 hr duration was investigated in this study. The results demonstrate that the adsorption of ammonia increases with the increase of contact time and adsorption process gradually reaches to equilibrium. A thirty min contact time appears to be optimal. Adsorption of ammonia also increases with the increase of adsorbent dosage and a one gram of adsorbent quantity appears to be optimal, particularly in case of charcoal fractions activated at higher temperatures. It is also evident from the results that the adsorption of ammonia increases with the increase of activation temperature. The adsorption of ammonia is particularly higher in charcoal fractions prepared at activation temperature of 200°C. The adsorption of ammonia increases with the increases in ammonia concentration. The data from experiments was applied to Freundlich and Longmuir isotherms. The data was best fitted in Freundlich equation. Empirical formula obtained indicated that thermally activated charcoal had an excellent capacity of ammonia removal.

Page(s): 411-414

DOI: DOI not available

Published: Journal: Science International, Volume: 24, Issue: 4, Year: 2012

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