Selective emulsion liquid membrane extraction of silver from photographic waste industries by Mat, Hanapi, Othman, Norasikin, Ali, Noorhalieza

“…The optimum silver extraction was obtained by using 0.03 M Cyanex 302, 3 % (w/v) Span 80, 250 rpm stirring speed, 1.0 M thiourea in 1.0 M H2SO4 stripping agent, 1:5 of treat ratio, and kerosene as a diluents. …”
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