Recovery of uranium from seawater by composite fiber adsorbent
- 1. Dept. of Synthetic Chemistry, Faculty of Engineering, Kyoto Univ., Yoshida, Sakyo-ku, Kyoto 606 (Japan)
- 2. Polymers Research Lab., Toray Industries Inc., Sonoyama 3-2-1, Ohtsu 520 (Japan)
Description
The authors of this paper developed a composite fiber adsorbent (CFA) to entrap finely powdered amidoxime into fibrils of supporting material with silica in a previous report. This was further tested for uranyl recovery directly from seawater. The adsorption rate showed a flow rate dependence with almost a saturation value of ∼100 μg of U/g of CFA at a mean flow rate of sea current. Chemical as well as physical deterioration was overcome by using 1 N NaHCO3 and 0.72 M NaCl as liberating and washing agents, to keep the pH and ionic strength, respectively, constant, and the initial adsorption rate was maintained even after a recycle time of 50. A continuous passage of seawater showed a linear increase of the adsorption to afford 1560 μg of U/g of CFA after 3 weeks
Additional details
Publishing Information
- Journal Title
- Industrial and Engineering Chemistry Research
- Journal Volume
- 29
- Journal Issue
- 8
- Series
- Ind. Eng. Chem. Res.
- Journal Page Range
- 1662-1667
- ISSN
- 0888-5885
- CODEN
- IECRE
INIS
- Country of Publication
- United States
- Country of Input or Organization
- United States
- INIS RN
- 23052439
- Subject category
- S11: NUCLEAR FUEL CYCLE AND FUEL MATERIALS; S11: NUCLEAR FUEL CYCLE AND FUEL MATERIALS; S11: NUCLEAR FUEL CYCLE AND FUEL MATERIALS;
- Descriptors DEI
- ADSORBENTS; ADSORPTION; AMIDES; CHEMICAL REACTION KINETICS; COMPOSITE MATERIALS; ENERGY RECOVERY; FIBERS; FLOW RATE; OXIMES; PH VALUE; SEAWATER; URANIUM
- Descriptors DEC
- ACTINIDES; AMINES; ELEMENTS; HYDROGEN COMPOUNDS; HYDROXY COMPOUNDS; KINETICS; MATERIALS; METALS; ORGANIC COMPOUNDS; ORGANIC NITROGEN COMPOUNDS; OXYGEN COMPOUNDS; REACTION KINETICS; SORPTION; WATER