MICELLAR-ENHANCED MICROFILTRATION OF STRONTIUM

The preconcentration of strontium from aqueous colloid solution contai ning di(2-ethylhexyl)-phosphoric acid as a surfactant was performed us ing micellar ultrafiltration technique. Filters with different pore si ze and materials (nitrocellulose, polysulfonate, glass fibers) were us ed to achieve a separation from liquid solutions. The strontium recove ries depending on the different conditions (pH, concentration of surfa ctant, background electrolytes) were determined and the results are ex plained in the terms of colloidal parameters of the system, viz. surfa ce tension and turbidity.