Ion flotation of cadmium using ethylhexadecyldimethylammonium bromide |
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Authors: | Curtis McDonald Shahram Taheri |
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Institution: | Department of Chemistry, Texas Southern University, Houston, Texas 77004 USA |
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Abstract: | Cadmium ions react with the collector, ethylhexadecyldimethylammonium bromide (EHDABr), to form a surface-active sublate which can be removed from aqueous bromide a. Effect of Foreign Metal Ions on the Flotation of Cadmium aForeign ion | Foreign ion concentration (M) (×10?5) | Foreign ion removed (%) | Cadmium removed (%) | None | | | 99.21 | Zn2+ | 6.11 | 0.06 | 98.41 | Cu2+ | 6.29 | 3.64 | 97.80 | Pb2+ | 3.86 | 4.80 | 91.78 | Cr6+ | 7.69 | 30.75 | 99.07 solutions by ion flotation. A typical ion flotation procedure involves passing air through a 250-ml solution containing 5 ppm Cd2+, 0.05 M Br?1, and 1.7 × l0?3M EHDABr at a flow rate of 40 ml/min for 1 hr. The procedure was simple and efficient. Chromium, copper, and zinc ions do not interfere under the experimental conditions. |
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Keywords: | To whom correspondence should be addressed |
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