Abstract—Platinum and palladium were adsorbed onto grape stalk and activated grape stalk prepared by chemical activation process using phosphoric acid. The amount of platinum and palladium uptake (adsorbent loading) was quantified. Influence of contact time, pH were investigated. The results showed that the adsorption of metal ions is pH dependent. The presence of base metal ions in the solution did not affect the process of adsorption of palladium and platinum. Effect of temperature was taken into account during the determination of isotherms. Langmuir and Freundlich isotherm models were applied and compared.
Index Terms—Adsorption, chemical activation, grape stalk, base metals.
The authors are with the Department of Chemical, Metallurgical and Material Engineering, Tshwane University of Technology, South Africa (email: funani.mavhungu@yahoo.com, mbayar@tut.ac.za, moropengl@tut.ac.za).
[PDF]
Cite: A. Mavhungu, R. K. K. Mbaya, and M. L. Moropeng, "Recovery of Platinum and Palladium Ions from Aqueous Solution Using Grape Stalk Waste," International Journal of Chemical Engineering and Applications vol. 4, no. 6, pp. 354-358, 2013.
