Published January 1994 | Version v1
Journal article Metadata-only

Synergetic extraction in systems with dicarbollide and bidentate phosphonate

Creators

  • 1. Nuclear Research Inst., Rez (Czechoslovakia)

Description

A process for the extraction of tervalent metal cations from 3 M HNO3 highly radioactive waste based on synergetic mixtures of dicarbollide with neutral organophosphonate (dibutyl diethylcarbamoylmethylene phosphonate) is proposed. Due to the great hydrophobicity of dicarbollide anion, the species MLn3+·3BCl- is extracted and the extraction in this TRUDIC process decreases with aqueous acidity, contrary to TRUEX process. HL+BCl- is the main particle in the organic phase. The extraction of Cs+, Sr2+, Ba2+, and Ru is low, and the extraction of Zr can be suppressed by citric acid. Possible advantages of the system are discussed. 22 refs., 6 figs., 2 tabs

Additional details

Publishing Information

Journal Title
Separation Science and Technology
Journal Volume
29
Journal Issue
2
Journal Page Range
p. 261-274.
ISSN
0149-6395
CODEN
SSTEDS

INIS

Country of Publication
United States
Country of Input or Organization
United States
INIS RN
25042897
Subject category
S37: INORGANIC, ORGANIC, PHYSICAL AND ANALYTICAL CHEMISTRY; S38: RADIATION CHEMISTRY, RADIOCHEMISTRY AND NUCLEAR CHEMISTRY; S12: MANAGEMENT OF RADIOACTIVE WASTES, AND NON-RADIOACTIVE WASTES FROM NUCLEAR FACILITIES;
Descriptors DEI
ACTINIDES; CATIONS; CITRIC ACID; EXTRACTION; NITRIC ACID; PHOSPHONATES; RADIOACTIVE WASTE PROCESSING; SYNERGISM; TRUEX PROCESS
Descriptors DEC
CARBOXYLIC ACIDS; CHARGED PARTICLES; ELEMENTS; HYDROGEN COMPOUNDS; HYDROXY ACIDS; INORGANIC ACIDS; INORGANIC COMPOUNDS; IONS; MANAGEMENT; METALS; NITROGEN COMPOUNDS; ORGANIC ACIDS; ORGANIC COMPOUNDS; ORGANIC PHOSPHORUS COMPOUNDS; OXYGEN COMPOUNDS; SEPARATION PROCESSES; WASTE MANAGEMENT; WASTE PROCESSING