ADSORPTION OF Nb AND Zr BY SILICA GELS

Journal Article · Thu Jan 01 04:00:00 EST 1959 · Radiokhimiya (U.S.S.R.) For English translation see Sov. Radiochem. (Engl. Transl.)

OSTI ID:4200551

Nikol'skii, B P; Trofimov, A M; Panfilova, G P

Silica gels were used for separating uranium from Zr/sup 95/ and Nb/sup 95/ and mixtures of their fragments. The equilibrium and adsorptive characteristics of the process and the adsorptive index taken under dynamic conditions are tabulated. The investigation of selective zirconium and niobium adsorption showed high adsorptive selectivity for niobium regardless of the content of nitric acid in the solution. The maximum zirconium adsorption was established at 0.5 to 1.0 N of HNO/sub 3/. The sorption of zirconium from 10 N HNO/sub 3/ is very weak while that of niobium is quite strong. Both zirconium and niobium are well adsorbed in weak acid solutions under dynamic conditions and poorly adsorbed under static conditions. Zirconium-niobium complex formation lowers their selective adsorption. Satisfactory desorption of zirconium and niobium by oxalic acid was achieved. (R.V.J.)

• Research Organization: Originating Research Org. not identified
• NSA Number: NSA-14-005276
• OSTI ID: 4200551
• Journal Information: Radiokhimiya (U.S.S.R.) For English translation see Sov. Radiochem. (Engl. Transl.), Journal Name: Radiokhimiya (U.S.S.R.) For English translation see Sov. Radiochem. (Engl. Transl.) Vol. Vol: 1; ISSN RADKA
• Country of Publication: Country unknown/Code not available
• Language: Russian

Related Subjects

ADSORPTION
CHEMISTRY
COLLOIDS
COMPLEXES
MIXING
NIOBIUM
NIOBIUM 95
NITRIC ACID
OXALIC ACID
SEPARATION PROCESSES
SILICON OXIDES
SOLUTIONS
URANIUM
ZIRCONIUM
ZIRCONIUM 95