RECOVERY OF URANIUM BY CFBA USING A GRANULAR ORGANIC ADSORBENT
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概要
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Recovery of uranium from natural seawater by a circulating fluidized-bed adsorber (CFBA) was carried out using an organic adsorbent-a granular amidoxime resin (AOR). In the adsorption experiments, stability of the circulating fluidized state of adsorbent and uranium uptake were measured as a finiction of adsorption time. Results were compared with those obtained for a typical inorganic adsorbent-hydrous titanium oxide granulated with polyacrylonitrile (PAN-HTO). The circulating fluidized state of AOR was very stable. The total amount of carried-over adsorbent was small enough for an adsorption period of 216 hours. The uranium adsorption rates of AOR increased linearly up to the adsorption time of 100 hours, but the increase rate decreased slightly after this time. The uranium amount adsorbed per unit weight of AOR was larger than that of PAN-HTO. The effect of contacting section height of the CFBA on the uranium uptake was also discussed.
- 1995-12-01
著者
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NAKAMURA Susumu
Department of Electrical Engineering Nagaoka College of Technology
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OGUMA Kouji
Department of Mechanical Engineering Nagaoka University of Technology
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ITO Yoshiro
Department of Mechanical Engineering Nagaoka University of Technology
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Ito Yoshiro
Department Of Applied Chemistry School Of Engineering Nagoya University
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Nakamura S
National Inst. Materials And Chemical Res. Tsukuba Jpn
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Nakamura Susumu
Department Of Applied Biological Science Tokyo University Of Agriculture And Technology
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