Separation of valence forms of chromium(III) and chromium(VI) by coprecipitation with iron(III) hydroxide
Journal Article
·
· Sov. Radiochem. (Engl. Transl.); (United States)
OSTI ID:5761647
The sorption of 9.62/centered dot/10/sup /minus/5/ M of Cr/sup (III)/ and Cr/sup (VI)/ with iron hydroxide in 1 M potassium nitrate and potassium chloride was investigated in relation to the pH of the medium. Experimental data on the sorption of chromium(III) and chromium(VI) with iron(III) hydroxide made it possible to determine the region of practically complete concentration of Cr/sup (III)/ and Cr/sup (VI)/ (pH = 3-6.5). The results from spectrophotometric investigations, calculated data on the distribution of the hydroxocationic forms of chromium(III) and the anions of chromium(IV), and their sorption by iron-(III) hydroxide made it possible to characterize the sorbability of the cationic and anionic forms of chromium in various degrees of oxidation. On this basis a method was developed for the separation of chromium(III) and chromium(VI) by coprecipitation on iron(III) hydroxide and their separation from the iron(III) hydroxide support.
- OSTI ID:
- 5761647
- Journal Information:
- Sov. Radiochem. (Engl. Transl.); (United States), Journal Name: Sov. Radiochem. (Engl. Transl.); (United States) Vol. 30:3; ISSN SVRDA
- Country of Publication:
- United States
- Language:
- English
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37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400202* -- Isotope Effects
Isotope Exchange
& Isotope Separation
ALKALI METAL COMPOUNDS
ANIONS
BETA DECAY RADIOISOTOPES
CATIONS
CHARGED PARTICLES
CHLORIDES
CHLORINE COMPOUNDS
CHROMIUM 51
CHROMIUM COMPOUNDS
CHROMIUM ISOTOPES
COPRECIPITATION
ELECTRON CAPTURE RADIOISOTOPES
EVEN-ODD NUCLEI
HALIDES
HALOGEN COMPOUNDS
HYDROGEN COMPOUNDS
HYDROXIDES
INTERMEDIATE MASS NUCLEI
IONS
IRON COMPOUNDS
IRON HYDROXIDES
ISOTOPE SEPARATION
ISOTOPES
NITRATES
NITROGEN COMPOUNDS
NUCLEI
OXYGEN COMPOUNDS
PH VALUE
POTASSIUM CHLORIDES
POTASSIUM COMPOUNDS
POTASSIUM NITRATES
PRECIPITATION
QUANTITY RATIO
RADIOISOTOPES
SEPARATION PROCESSES
SOLUBILITY
SORPTION
SORPTIVE PROPERTIES
SPECTROPHOTOMETRY
SURFACE PROPERTIES
TRANSITION ELEMENT COMPOUNDS
VALENCE
400202* -- Isotope Effects
Isotope Exchange
& Isotope Separation
ALKALI METAL COMPOUNDS
ANIONS
BETA DECAY RADIOISOTOPES
CATIONS
CHARGED PARTICLES
CHLORIDES
CHLORINE COMPOUNDS
CHROMIUM 51
CHROMIUM COMPOUNDS
CHROMIUM ISOTOPES
COPRECIPITATION
ELECTRON CAPTURE RADIOISOTOPES
EVEN-ODD NUCLEI
HALIDES
HALOGEN COMPOUNDS
HYDROGEN COMPOUNDS
HYDROXIDES
INTERMEDIATE MASS NUCLEI
IONS
IRON COMPOUNDS
IRON HYDROXIDES
ISOTOPE SEPARATION
ISOTOPES
NITRATES
NITROGEN COMPOUNDS
NUCLEI
OXYGEN COMPOUNDS
PH VALUE
POTASSIUM CHLORIDES
POTASSIUM COMPOUNDS
POTASSIUM NITRATES
PRECIPITATION
QUANTITY RATIO
RADIOISOTOPES
SEPARATION PROCESSES
SOLUBILITY
SORPTION
SORPTIVE PROPERTIES
SPECTROPHOTOMETRY
SURFACE PROPERTIES
TRANSITION ELEMENT COMPOUNDS
VALENCE