Ion Flotation of Copper(II) and Lead(II) from Environmental Water Samples|
Ghazy, S. E.; El-Morsy, S. M. & Ragab, A. H.
The present study aims to develop a simple, rapid and economic procedure for copper(II) and
lead(II) removal under the optimum conditions investigated. It is based on the complex formation between Cu2+
and Pb2+ ions and diphenylcarbazone (HDPC) followed by flotation with oleic acid (HOL) surfactant. The
different parameters (namely: solution pH, HDPC, HOL, copper and lead concentrations, ionic strength,
temperature and the presence of foreign ions) influencing the flotation process were examined. Nearly, 100% of
Cu2+ and Pb2+ ions were removed from aqueous solutions at pHs 6 and 7, respectively at room temperature (~25
°C). The procedure was successfully applied to recover almost copper(II) and lead(II) spiked to some natural
water samples. Due to the rapid, simple and economic nature of the procedure, a flotation mechanism is suggested
for metal removal in wastewater systems.