Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
583571 | Journal of Hazardous Materials | 2008 | 8 Pages |
Abstract
The present study was carried out to investigate the potential of cement hydrated at various time intervals for the removal of excess Fâ from aqueous solution by using batch adsorption studies. The influence of different adsorption parameters, viz. effect of adsorbent dose, initial concentration, pH, interfering ions and contact time were studied for their optimization. It was observed that the adsorbent exhibited reasonably significant Fâ removal over a wide range of pH. The presence of carbonate and bicarbonate ions in aqueous solution were found to affect the Fâ removal indicating that these anions compete with the sorption of Fâ on adsorbent. The equilibrium adsorption data were fitted well for both the Freundlich and Langmuir isotherms and the adsorption capacities were calculated. Comparative studies for Fâ removal in simulated and field water show relatively higher Fâ removal in simulated water. XRD and SEM patterns of the hydrated cement were recorded to get better insight into the mechanism of adsorption process. From the experimental results, it may be concluded that HC was an efficient and economical adsorbent for Fâ removal.
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Authors
S. Kagne, S. Jagtap, P. Dhawade, S.P. Kamble, S. Devotta, S.S. Rayalu,