Successive adsorption of polyacrylamide compounds from electrolyte solutions on the surface of kaolinitic clay particles |
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| Authors: | P D Vorob’ev N P Krut’ko E V Vorob’eva N Strnadova |
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| Institution: | (1) Institute of General and Inorganic Chemistry, National Academy of Sciences of Belarus, ul. Surganova 9, Minsk, 220072, Belarus;(2) Institute of Chemical Technology, Technicka 5, Praha 6, 166 28, Czech Republic |
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| Abstract: | Successive adsorption of oppositely charged polyelectrolytes, namely, cationic and anionic acrylamide copolymers, on a solid phase surface from solutions with high ionic strength is investigated. The constants of the Freundlich equation are calculated for the adsorption of different polymers. The interrelation between the adsorption values of polymers and their flocculation activity with respect to clay-salt suspensions is determined. The successive adsorption of oppositely charged polyelectrolytes strongly affects the flocculation due to the formation of polyelectrolyte complexes on the surface of clay particles. The mechanism for complexation is proposed. |
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