Pertraction of U(VI) through liquid membranes using monoamides as carrier ligands: experimental and theoretical studies

摘要

Pertraction of U(VI) from HNO3 feed into water through flat-sheet supported liquid membrane containing a series of monoamides, viz. N,N-dihexylhexanamide (DHHA), N,N-dihexyloctanamide (DHOA) and N,N-dihexyldecanamide (DHDA), as the carrier ligands were studied. The results obtained with monoamides were compared with those obtained with TBP, a contemporary ligand to monoamides. The permeation of U(VI) was primarily governed by the distribution ratio of U(VI) by the ligands. A mathematical equation was derived by solving the mass balance equation on the feed side and the receiver side of the membrane which fitted well to a series of experimental results in the present work.