Various double emulsion systems with liquid membranes containing tri-n-octylphosphine oxide /TOPO/, tri-n-butylphosphate /TBP/,
KELEX 100® and di-2-ethylhexylphosphoric acid /DEHPA/, as carriers for uranium/VI/ pertraction, were studied. The conditions were found
at which the systems are most efficient, comparing with solvent extraction. The use of DEHPA as a membrane carrier with solutions
of H2SO4 and H3PO4 encapsulated in the membrane was substanfiated.