Abstract
Metal removal kinetics and metal ion selectivity in ion flotation were studied from a thermodynamic perspective. Surface tension data could be used with the Gibbs adsorption equation to quantitatively predict the metal-ion removal kinetics in alkylsulfate-Cu systems. However, surface tensions predicted cation selectivity coefficients in the sodium dodecylsulfate (SDS)-Cu-Ca and SDS-Cu-Pb systems rather poorly, although the predicted order of the selectivity (Cu2+ < Ca2+ < Pb2+) was correct. Another thermodynamic selectivity model, which used the Grahame adsorption equation and a geometrical analysis, predicted cation selectivity coefficients that agreed very well with experimentally measured values.
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Liu, Z., Doyle, F.M. Modeling metal ion removal in alkylsulfate ion flotation systems. Mining, Metallurgy & Exploration 18, 167–171 (2001). https://doi.org/10.1007/BF03402891
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DOI: https://doi.org/10.1007/BF03402891