Selective Recovery of Chromium from Precipitates Containing d Elements and Actinides: I. Effects of O2

July 15, 2002

Journal Article

Selective Recovery of Chromium from Precipitates Containing d Elements and Actinides: I. Effects of O2

Abstract

The oxidation of Cr(III) hydroxides, mixed Fe(III)-Cr(III) hydroxides, and specimens of spinel phases NiCr2O4 and Fe(Cr,Fe)2O4 have been investigated in alkaline suspensions under the action of air and pure oxygen (1-3 atm). The rate of reaction increases with increasing alkali concentration, temperature, and oxygen pressure. Pu(IV) fixed on chromium hydroxides is not oxidized by oxygen under these conditions but is retained in the precipitate.

Revised: January 9, 2009 | Published: July 15, 2002

Citation

Fedoseev A.M., N.A. Budantseva, A.B. Yusov, V.P. Shilov, and C.H. Delegard. 2002. Selective Recovery of Chromium from Precipitates Containing d Elements and Actinides: I. Effects of O2. Radiokhimiya 44, no. 4:318-324. PNNL-SA-37147.