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Original Article

ECB. 2014; 3(10): 1032-1037


BIOSORPTIVE-FLOTATION OF Pb2+ AND Cd2+ FROM WATER USING EGGSHELLS AS SORBENT AND OLEIC ACID AS SURFACTANT

S. E. Samra, A. M. El-Nokrashy, A. A. El-Asmy.




Abstract

The removal and recovery of Pb2+ and Cd2+ is important for environmental protection and economic reasons. A new method, sorptive
flotation, for the removal of Pb2+ and Cd2+ from aqueous solutions and water samples using eggshells as sorbent and oleic acid (HOL) as
surfactant has been investigated. The process parameters (solution pH, initial concentration of metal ions, sorbent dose, shaking time, oleic
acid (HOL) concentration, and temperature) on the flotation of Pb2+ and Cd2+ were studied in batch system. Under the optimum
experimental conditions suggested, the removal of ~ 100 % of Pb2+ and Cd2+ was attained. The procedure was successfully applied for the
removal of Pb2+ and Cd2+ from different natural water samples

Key words: Ionic flotation, Eggshells, Cadmium, Lead, Surfactant






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