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The extraction and recovery of cadmium from aqueous solutions has been performed by a method which avoids the use of organic solvents. The method makes use of surfactant micelles in combination with metal complexing agents. The complexed metals are concentrated on the micelle surface and then treated by a ligand-modified micellar enhanced ultrafiltration process (LM-MEUF). Subsequently the metal ions...
There is much interest in industrial chemistry in the selective extraction and concentration of toxic metals from aqueous process streams and liquid wastes. In this paper, the use and scope of two simple ligands pyridine-2-azo-p-dimethylaniline (PADA) and 4-(2-Pyridylazo) resorcinol (PAR) in micellar solution are explored in relation to nickel and cadmium ion extraction. The thermodynamics and kinetics...
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