Effect of seawater temperature on uranium recovery from seawater using amidoxime adsorbents

Journal Article · Tue Mar 01 00:00:00 EST 1994 · Industrial and Engineering Chemistry Research; (United States)

DOI:https://doi.org/10.1021/ie00027a025· OSTI ID:7285929

Sekiguchi, Koji; Saito, Kyoichi; Konishi, Satoshi; Furusaki, Shintaro ^[1]; Sugo, Takanobu ^[2]; Nobukawa, Hisashi ^[3]

---

1. Univ. of Tokyo (Japan). Dept. of Chemical Engineering
2. Japan Atomic Energy Research Institute, Gunma (Japan). Takasaki Radiation Chemistry Research Establishment
3. Hiroshima Univ. (Japan). Dept. of Naval Architecture and Ocean Engineering

Porous amidoxime hollow fibers, which were prepared by radiation-induced graft polymerization of acrylonitrile onto porous polyethylene hollow fibers and subsequent amidoximation, were used as packing materials of the adsorption bed for uranium recovery from seawater. Seawater was forced to flow through the bed charged with the amidoxime hollow fibers either by pumping or by ocean current. Uranium concentration decay through the bed could be well correlated with residence time based on the adsorption rate expressed in terms of the overall mass-transfer coefficient. The resultant activation energy of 20 kcal/mol for uranium adsorption was indicative of the chelate formation of the amidoxime group with uranyl species as a rate-determining step.

• OSTI ID: 7285929
• Journal Information: Industrial and Engineering Chemistry Research; (United States), Vol. 33:3; ISSN 0888-5885
• Country of Publication: United States
• Language: English

Related Subjects

11 NUCLEAR FUEL CYCLE AND FUEL MATERIALS
SEAWATER
MATERIALS RECOVERY
URANIUM
CHEMICAL PREPARATION
OXIMES
TEMPERATURE DEPENDENCE
ACTINIDES
AMINES
ELEMENTS
HYDROGEN COMPOUNDS
HYDROXY COMPOUNDS
MANAGEMENT
METALS
ORGANIC COMPOUNDS
ORGANIC NITROGEN COMPOUNDS
OXYGEN COMPOUNDS
PROCESSING
SYNTHESIS
WASTE MANAGEMENT
WASTE PROCESSING
WATER
050101* - Nuclear Fuels- Reserves
Exploration
& Mining- Recovery from Waters of the Earth- (1992-)