Effect of sodium hydroxide on anionic surfactant distribution in a two-phase system based on TBP in n-dodecane

Journal Article · Tue Nov 01 04:00:00 EST 1988 · Sov. Radiochem. (Engl. Transl.); (United States)

OSTI ID:6132090

Nikitin, S D; Balakhonov, V G; Semenov, E N; Shmidt, V S

Measurements have been made on the effects of sodium hydroxide on the distributions for the sodium salts of di-2-ethylhexylphosphoric acid (D2EHPA), di-n-butylphosphoric acid (DBPA), and lauric acid in a system composed of a 30% TBP solution in n-dodecane and aqueous sodium hydroxide. As the alkali concentration in the aqueous phase is reduced from 10 to 0.01 M, the distribution coefficients decrease for the anionic surfactants as well as TBP. Dilute sodium hydroxide solution thus enable one to remove extractant and diluent acid decomposition products from the organic phase, particularly ones having long alkyl chains, which tend to stabilize the emulsions in alkali-carbonate treatment. The distribution coefficients for these surfactants have appreciable effects on the type of stabilized emulsion. At 10 M alkali concentration, micellar aggregates are formed by sodium laurate in the organic phase.

• OSTI ID: 6132090
• Journal Information: Sov. Radiochem. (Engl. Transl.); (United States), Journal Name: Sov. Radiochem. (Engl. Transl.); (United States) Vol. 30:2; ISSN SVRDA
• Country of Publication: United States
• Language: English

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ALKALI METAL COMPOUNDS
ALKANES
ANIONS
AQUEOUS SOLUTIONS
BUTYL PHOSPHATES
CARBOXYLIC ACID SALTS
CARBOXYLIC ACIDS
CHARGED PARTICLES
CHEMICAL PROPERTIES
COLLOIDS
DISPERSIONS
DISTRIBUTION
DODECANE
DODECANOIC ACID
EMULSIONS
ENERGY SOURCES
ESTERS
FLUID MECHANICS
FUELS
HYDROCARBONS
HYDRODYNAMICS
HYDROGEN COMPOUNDS
HYDROXIDES
IONS
MASS DISTRIBUTION
MATERIALS
MECHANICS
MIXTURES
MONOCARBOXYLIC ACIDS
NUCLEAR FUELS
ORGANIC ACIDS
ORGANIC COMPOUNDS
ORGANIC PHOSPHORUS COMPOUNDS
ORGANIC SOLVENTS
OXYGEN COMPOUNDS
PHOSPHONATES
PHOSPHONIC ACID ESTERS
PHOSPHORIC ACID ESTERS
REACTOR MATERIALS
REPROCESSING
SALTING-OUT AGENTS
SEPARATION PROCESSES
SODIUM COMPOUNDS
SODIUM HYDROXIDES
SOLUTIONS
SOLVENT PROPERTIES
SOLVENTS
SPATIAL DISTRIBUTION
SPENT FUELS
SURFACE PROPERTIES
SURFACE TENSION
SURFACTANTS
TBP
TESTING