In-situ leaching of South Texas uranium ores - 2. Oxidative removal of adsorbed ammonium ions with sodium hypochlorite

Conference · Thu Jan 01 00:00:00 EST 1981 · Soc. Pet. Eng. AIME, Pap.; (United States)

OSTI ID:6410475

Paul, J M; Johnson, W F; Fletcher, A; Venuto, P B

This paper reports a laboratory study of the oxidative destruction, by sodium hypochlorite, of ammonium ions adsorbed on relatively reduced South Texas uranium ore. Included are an assessment of reaction stoichiometry, determination of some major reaction pathways and side reactions, and identification of several intermediates. Adsorbed ammonium ions were completely removed by 0.5% sodium hypochlorite with the concentration of ammonia in the effluent falling to a very low value after 10-15 pore volumes of the oxidant. Substantial quantities of sulfate, reflecting oxidation of sulfide minerals such as pyrite, were formed. Large amounts of uranium were leached out, and substantial amounts of calcium and magnesium ions were also produced during the pre-saturation with ammonium bicarbonate during the oxidation stage. 28 refs.

• Research Organization: Mobil Res and Dev Corp
• OSTI ID: 6410475
• Report Number(s): CONF-811023-
• Journal Information: Soc. Pet. Eng. AIME, Pap.; (United States), Conference: 1981 SPE annual technical conference and exhibition, San Antonio, TX, USA, 4 Oct 1981
• Country of Publication: United States
• Language: English

Related Subjects

11 NUCLEAR FUEL CYCLE AND FUEL MATERIALS
URANIUM ORES
LEACHING
SOLUTION MINING
AMMONIUM COMPOUNDS
BENCH-SCALE EXPERIMENTS
HYPOCHLOROUS ACID
TEXAS
DISSOLUTION
FEDERAL REGION VI
HYDROGEN COMPOUNDS
INORGANIC ACIDS
MINING
NORTH AMERICA
ORES
SEPARATION PROCESSES
USA
050400* - Nuclear Fuels- Feed Processing