Coprecipitation of thorium and uranium peroxides from acid solutions

Conference · Thu Jan 01 00:00:00 EST 1981

OSTI ID:5963165

McTaggart, D R; Mailen, J C

The factors affecting successful coprecipitation of thorium and uranium peroxides from acid media were studied. Variables considered in this work were H/sup +/ concentration, H/sub 2/O/sub 2/ concentration, duration of contact, and rate of feed solution addition. In all experiments, stock solutions of Th(NO/sub 3/)/sub 4/ and UO/sub 2/(NO/sub 3/)/sub 2/ were fed at a controlled rate into H/sub 2/O/sub 2/ solutions with constant stirring. Samples were taken as a function of time to follow the H/sup +/ concentration of the solution, uranium precipitation, thorium precipitation, precipitant weight/volume of solution, and crystalline structure and growth. The optimum conditions for maximum coprecipitation are low H/sup +/ concentration, high H/sub 2/O/sub 2/ concentration, and extended contact time between the solutions.

• Research Organization: Oak Ridge National Lab., TN (USA)
• DOE Contract Number: W-7405-ENG-26
• OSTI ID: 5963165
• Report Number(s): CONF-811108-7; ON: DE82003991; TRN: 82-000127
• Resource Relation: Conference: Annual meeting of the Institute of Chemical Engineers, New Orleans, LA, USA, 8 Nov 1981
• Country of Publication: United States
• Language: English

Related Subjects

11 NUCLEAR FUEL CYCLE AND FUEL MATERIALS
PEROXIDES
COPRECIPITATION
THORIUM COMPOUNDS
URANIUM PEROXIDES
HYDROGEN PEROXIDE
PH VALUE
THORIUM NITRATES
URANIUM NITRATES
ACTINIDE COMPOUNDS
HYDROGEN COMPOUNDS
NITRATES
NITROGEN COMPOUNDS
OXYGEN COMPOUNDS
PRECIPITATION
SEPARATION PROCESSES
URANIUM COMPOUNDS
050800* - Nuclear Fuels- Spent Fuels Reprocessing