Tc(IV) and Tc(VII) interactions with iron oxyhydroxides

Journal Article · Wed Jan 01 04:00:00 EST 1986 · Nucl. Chem. Waste Manage.; (United States)

DOI:https://doi.org/10.1016/0191-815X(86)90049-5· OSTI ID:5031114

Walton, F B; Ross, J P.M.; Lawrence, W E

The interactions of Tc(VII) with Fe(OH)/sub 3/, FeOOH and Fe/sub 2/O/sub 3/ under oxic conditions, and of Tc(IV) with Fe(OH)/sub 3/ and Fe/sub 2/O/sub 3/ in bicarbonate media under anoxic conditions were examined. The incorporation of Tc into the lattice of Fe/sub 2/O/sub 3/ and FeOOH during conversion of Fe(OH)/sub 3/ to Fe/sub 2/O/sub 3/ and FeOOH was also examined. These studies were conducted using a combination of selective chemical extraction and radiotracer techniques. Little sorption of Tc(VII) was observed. Tc(IV) was rapidly removed from anoxic bicarbonate solutions by Fe(III) oxyhydroxides by chemisorption. A small amount of Tc(IV) was incorporated within the Fe/sub 2/O/sub 3/ lattice over a short period of time.

• Research Organization: Atomic Energy of Canada Ltd., Whiteshell Nuclear Research Establishment, Pinawa, Manitoba ROE 1L0
• OSTI ID: 5031114
• Journal Information: Nucl. Chem. Waste Manage.; (United States), Journal Name: Nucl. Chem. Waste Manage.; (United States) Vol. 6:2; ISSN NCWMD
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400201* -- Chemical & Physicochemical Properties
ACID CARBONATES
ANOXIA
CHALCOGENIDES
CHEMICAL REACTIONS
CHEMISORPTION
COMPLEXES
CRYSTAL LATTICES
CRYSTAL STRUCTURE
EXTRACTION
HYDROGEN COMPOUNDS
HYDROXIDES
IRON COMPOUNDS
IRON HYDROXIDES
IRON OXIDES
ISOTOPE APPLICATIONS
OXIDES
OXYGEN COMPOUNDS
SEPARATION PROCESSES
SORPTION
SORPTIVE PROPERTIES
SURFACE PROPERTIES
TECHNETIUM COMPLEXES
TRACER TECHNIQUES
TRANSITION ELEMENT COMPLEXES
TRANSITION ELEMENT COMPOUNDS