Metal separation using emulsion liquid membranes

Journal Article · Sat Jan 01 04:00:00 EST 1983 · Sep. Sci. Technol.; (United States)

DOI:https://doi.org/10.1080/01496398308059920· OSTI ID:6314194

Izatt, R M; Dearden, D V; McBride, Jr, D W; Oscarson, J L; Lamb, J D; Christensen, J J

Emulsion membrane systems consisting of an aqueous metal salt source phase, a toluene membrane containing the macrocyclic ligand dicyclohexano-18-crown-6 (DC18C6) (0.02 M) and the surfactant sorbitan monooleate (3% v/v), and an aqueous 0.05 M Li/sub 4/P/sub 2/O/sub 7/ receiving phase were studied with respect to the disappearance of metal from the source phase as a function of time. The salts Pb(NO/sub 3/)/sub 2/, Sr(NO/sub 3/)/sub 2/, TlNO/sub 3/, and LiNO/sub 3/ were studied both singly and in mixtures of Pb(NO/sub 3/)/sub 2/ with each of the other salts. In all mixtures studied, Pb/sup 2 +/ was transported first, followed by the second cation (except Li/sup +/ which was not transported). An excess of a second salt with a common anion enhanced the transport of Pb/sup 2 +/. Modeling of these systems was discussed. Source phases containing basic (pH 11) K(Al(OH)/sub 4/) solutions were studied using the same membrane and a 0.15 M H/sub 3/PO/sub 4/ receiving phase. K/sup +/ and Al(III) (as aluminate anion) were both found to transport in this system, but no transport of Al(III) and little transport of K/sup +/ were detected when DC18C6 was absent.

• Research Organization: Brigham Young Univ., Provo, UT
• DOE Contract Number: AC02-78ER05016
• OSTI ID: 6314194
• Journal Information: Sep. Sci. Technol.; (United States), Journal Name: Sep. Sci. Technol.; (United States) Vol. 18:12-13; ISSN SSTED
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400105* -- Separation Procedures
ALCOHOLS
ALKALI METAL COMPOUNDS
ALKALI METALS
ALKALINE EARTH METAL COMPOUNDS
ALKALINE EARTH METALS
ALKYLATED AROMATICS
ALUMINATES
ALUMINIUM
ALUMINIUM COMPOUNDS
AROMATICS
COLLOIDS
DATA
DISPERSIONS
ELEMENTS
EMULSIONS
EXPERIMENTAL DATA
GLYCOLS
HYDROCARBONS
HYDROXY COMPOUNDS
INFORMATION
LEAD
LEAD COMPOUNDS
LEAD NITRATES
LITHIUM
LITHIUM COMPOUNDS
LITHIUM NITRATES
MEMBRANE TRANSPORT
METALS
NITRATES
NITROGEN COMPOUNDS
NUMERICAL DATA
ORGANIC COMPOUNDS
ORGANIC POLYMERS
OXYGEN COMPOUNDS
POLYETHYLENE GLYCOLS
POLYMERS
POTASSIUM
STRONTIUM
STRONTIUM COMPOUNDS
STRONTIUM NITRATES
THALLIUM
THALLIUM COMPOUNDS
THALLIUM NITRATES
TOLUENE