THE MECHANISM OF MASS TRANSFER OF SOLUTES ACROSS LIQUID-LIQUID INTERFACES. III. THE TRANSFER OF URANYL NITRATE BETWEEN SOLVENT AND AQUEOUS PHASES

Journal Article · Sun Jun 01 04:00:00 EDT 1958 · Chemical Engineering Science (England)

DOI:https://doi.org/10.1016/0009-2509(58)85037-X· OSTI ID:4287585

Lewis, J B

Over-all transfer coefficients were determined for the transfer of uranyl nitrate between water and the three solvents dibutoxy diethyl ether (D.B.C.), methyl iso-butyl ketone (hexone), and a 20 per cent solution of tri n- butyl phosphate (T.B.P.) in odorless kerosene (O.K.), benzene, or carbon tetrachloride. In some experiments with D.B.C. the aqueous phase was 3N nitric acid in equilibrium with D.B.C. at 1.5N in nitric acid. Some systems gave larger transfer rates than predicted, and in all of these interfacial turbulence was observed. In the other systems the initial values of the calculated and observed coefficients were usually in good agreement, but the observed rate tended to diminish with time apparently due to the building up of an interfacial barrier. The formation of this barrier appears to depend solely on the duration of the experiment, being independent of uranyl nitrate concentration and all other experimental variables. The transfer of nitric acid alone between water and D.B.C. was investigated. No interfacial resistance was found when the transfer was from water to D.B.C., the transfer in the other direction was accelerated by interfacial turbulence. (auth)

• Research Organization: Atomic Energy Research Establishment, Harwell, Berks, Eng.
• NSA Number: NSA-13-009734
• OSTI ID: 4287585
• Journal Information: Chemical Engineering Science (England), Journal Name: Chemical Engineering Science (England) Vol. Vol: 8; ISSN CESCA
• Country of Publication: Country unknown/Code not available
• Language: English

Related Subjects

BENZENE
BUTYL PHOSPHATES
BUTYL RADICALS
CARBON TETRACHLORIDE
CHEMISTRY
ETHERS
ETHYL RADICALS
KETONES
MASS
MATHEMATICS
METHYL RADICALS
PETROLEUM
REACTION KINETICS
SOLUTIONS
SOLVENTS
SURFACES
URANYL NITRATES
VELOCITY
WATER