Investigation of Kinetics and Isotherms of Adsorption of Cd(II) Ions on Nanoclay from Aqueous Solution

Document Type : Research Paper

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Abstract

In the present work, adsorptive removal of Cd)II( from aqueous solution was studied by using nanoclay (Cloisite Na+). This study was implemented under laboratory conditions in single batch system by adsorption under various environmental conditions such as pH, contact time, adsorbent dose and adsorbate concentration. The kinetics of Cadmium adsorption was determined based on Ho et al & Lagergern. Then Langmuir and Freundlich coefficient were determined based on optimum conditions. The Result of this study was showed with increasing of pH from 2 to 8; the adsorption efficiency will be increased. With increasing contact time adsorption efficiency increased. It was also fundwith increasing amount of nanoclay adsorbent, efficiency increased. The results revealed that the results of this research for nanoclay adsorbent is closed to fit Ho et al and Lagergren kinetic and Freundlich isotherm Based on data obtained in this study it can be concluded that adsorption by nanoclay  is an efficient and reliable method for cadmium removal from liquid solutions.

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References

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Journal of Water and Wastewater; Ab va Fazilab ( in persian )
Volume 25, Issue 3 - Serial Number 3
Serial number: 91
July and August 2014
Pages 118-126

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