Extraction of uranium from seawater using magnetic adsorbents

Conference · Thu Jan 01 04:00:00 EST 1981 · Sep. Sci. Technol.; (United States)

OSTI ID:5628274

Yamashita, H ^[1]; Fujita, K; Nakajima, F; Ozawa, Y; Murata, T

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1. Hitachi Research Lab., Japan

A new process for the extraction of uranium from seawater was developed. In the process, uranium adsorption is effected using powdered magnetic adsorbents; the adsorbents are then separated from seawater using magnetic separation technology. This process is superior to a column method using a granulated hydrous titanium oxide adsorber bed in the following ways: (1) a higher rate of adsorption is realized because smaller particles are used in the uranium adsorption; and (2) blocking, which is inevitable in an adsorber bed, is eliminated. The composite hydrous titanium-iron oxide as a magnetic adsorbent having high uranium adsorption capacity and magnetization can be prepared by adding urea to a mixed solution of titanium sulfate and ferrous sulfate. Adsorption and desoprtion of uranium and the removal of the adsorbent using a small-scale uranium extraction plant (about 15 m/sup 3//d) is reported, and the feasibility of uranium extraction from seawater by this process is demonstrated. 10 figures.

• OSTI ID: 5628274
• Report Number(s): CONF-810520-
• Conference Information: Journal Name: Sep. Sci. Technol.; (United States) Journal Volume: 16:9
• Country of Publication: United States
• Language: English

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ACTINIDES
ADSORPTION
CARBON COMPOUNDS
CARBONATES
CHALCOGENIDES
CHARGED PARTICLES
DATA
DESORPTION
DISPERSIONS
EFFICIENCY
ELEMENTS
EXPERIMENTAL DATA
EXTRACTIVE METALLURGY
FEASIBILITY STUDIES
HYDRATES
HYDROGEN COMPOUNDS
HYDROMETALLURGY
INFORMATION
IONS
IRON COMPOUNDS
IRON OXIDES
MAGNETIC FIELDS
MAGNETIC PROPERTIES
MAGNETIZATION
METALLURGY
METALS
MIXTURES
NUMERICAL DATA
OXIDES
OXYGEN COMPOUNDS
PH VALUE
PHYSICAL PROPERTIES
POWDERS
RECOVERY
RECYCLING
SEAWATER
SEPARATION PROCESSES
SLURRIES
SORPTION
SORPTIVE PROPERTIES
SURFACE PROPERTIES
SUSPENSIONS
TIME DEPENDENCE
TITANIUM COMPOUNDS
TITANIUM OXIDES
TRANSITION ELEMENT COMPOUNDS
URANIUM
WATER