Electrical Aspects of Adsorbing Colloid Flotation. X. Pretreatments, Multiple Removals, Interferences, and Specific Adsorption

Abstract The compatibility of the adsorbing colloid flotation of Cu(II) with Fe(OH)3 and sodium lauryl sulfate with a variety of precipitation pretreatment techniques was studied. Procedures were developed which permitted precipitation pretreatment and effective foam flotation polishing. The interferences of glycerol, ClO4 −, NO3 −, C1−, CN−, CNS−, F−, SO44 2−, HPO4 2−, HAsO4 2−, C2O4 2−, (PO3)6 6−, and EDTA with the precipitate flotation of ferric hydroxide by sodium lauryl sulfate were studied. The simultaneous adsorbing colloid flotation of Cu(II), Pb(II), and Zn(II) with Fe(OH)3 and sodium lauryl sulfate was found to be effective in the pH range 6 to 7 at ionic strengths below 0.1 mole/l. A model was analyzed for calculating surface potentials for floe surfaces having the charge distributed at discrete sites in the presence of electrolytes. Plots of surface potential versus adsorbable ion concentration were calculated for various values of the model parameters.

[1]  B. L. Currin,et al.  The Removal of Metallo-Cyanide Complexes by Foam Flotation , 1979 .

[2]  Ann N. Clarke,et al.  Separation by Flotation , 1978 .

[3]  H. Zeitlin,et al.  The separation of mercury from sea water by adsorption colloid flotation and analysis by flameless atomic absorption. , 1974, Analytica chimica acta.

[4]  D. J. Wilson,et al.  Electrical Aspects of Adsorbing Colloid Flotation. VII. Cooperative Phenomena , 1977 .

[5]  H. Zeitlin,et al.  The Separation of Silver from Seawater by Adsorption Colloid Flotation , 1976 .

[6]  D. J. Wilson,et al.  Constant Surface Charge Model in Floc Foam Flotation. The Flotation of Copper(II) , 1977 .

[7]  R. Lemlich,et al.  Adsorptive bubble separation techniques , 1972 .

[8]  D. J. Wilson.  Electrical Aspects of Adsorbing Colloid Flotation. VI. Electrical Repulsion between Floc Particles , 1977 .

[9]  D. J. Wilson,et al.  Electrical Aspects of Adsorbing Colloid Flotation. Y. Nonideal Flocs and Salts , 1976 .

[10]  P. Somasundaran.  Separation Using Foaming Techniques , 1975 .

[11]  A. N. Clarke,et al.  Electrical Aspects of Adsorbing Colloid Flotation. VIII. Specific Adsorption of Ions by Flocs , 1978 .

[12]  H. Zeitlin,et al.  The Separation of Phosphate and Arsenate from Seawater by Adsorption Colloid Flotation , 1974 .

[13]  David J. Wilson,et al.  The Adsorbing Colloid Flotation of Lead(II) and Zinc(II) by Hydroxides , 1976 .

[14]  H. Zeitlin,et al.  Short communicationThe separation of vanadium from sea water by adsorption colloid flotation , 1976 .

[15]  R. Grieves.  Foam separations: A review , 1975 .

[16]  B. L. Currin,et al.  Surfactant Recovery in Adsorbing Colloid Flotation , 1978 .