Reduction stripping of low-concentration Np(VI) loaded on 30% tri-n-butyl phosphate through laser-induced reactions

Journal Article · Sun Oct 01 00:00:00 EDT 1989 · Nuclear Technology; (USA)

OSTI ID:6963234

Enokida, Y; Suzuki, A ^[1]

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1. Univ., of Tokyo, Dept. of Nuclear Engineering, Tokyo (JP)

A KrF excimer laser system is experimentally used to photochemically induce the reduction of 1 {times} 10{sup {minus} 4} mol/dm{sup 3} Np(VI) to Np(V) while in a solution of 30% tri-n-butyl phosphate (TBP) and nitric acid. It is found that Np(VI), initially prepared from KMnO{sub 4} and then extracted by 30% TBP, can be reduced by the reaction with nitrous acid, which is produced by photolysis of nitric acid.The experimental results have demonstrated that laser-induced redox reactions are effective in changing the distribution ratio and reaching equilibrium quickly.

• OSTI ID: 6963234
• Journal Information: Nuclear Technology; (USA), Journal Name: Nuclear Technology; (USA) Vol. 88:1; ISSN 0029-5450; ISSN NUTYB
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
38 RADIATION CHEMISTRY, RADIOCHEMISTRY, AND NUCLEAR CHEMISTRY
400500 -- Photochemistry
400600 -- Radiation Chemistry
640301 -- Atomic
Molecular & Chemical Physics-- Beams & their Reactions
656003* -- Condensed Matter Physics-- Interactions between Beams & Condensed Matter-- (1987-)
71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
ACTINIDES
BUTYL PHOSPHATES
CHEMICAL REACTION KINETICS
CHEMICAL REACTIONS
CHEMISTRY
ELEMENTS
EQUILIBRIUM
ESTERS
EXCIMER LASERS
GAS LASERS
HYDROGEN COMPOUNDS
INORGANIC ACIDS
KINETICS
KRYPTON FLUORIDE LASERS
LASERS
METALS
NEPTUNIUM
NITRIC ACID
ORGANIC COMPOUNDS
ORGANIC PHOSPHORUS COMPOUNDS
PHOSPHORIC ACID ESTERS
PHOTOCHEMISTRY
REACTION KINETICS
REDOX REACTIONS
TBP
TRANSURANIUM ELEMENTS