| Budget Amount *help |
¥4,680,000 (Direct Cost: ¥3,600,000、Indirect Cost: ¥1,080,000)
Fiscal Year 2017: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Fiscal Year 2016: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Fiscal Year 2015: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
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| Outline of Final Research Achievements |
Novel bifunctional chelating adsorbents consisting of a polar support impregnated with PPTPT, one of organophosphorus compounds with unusual high selectivity to uranium(VI) in HNO3 of very low concentrations, were developed for recovery of uranium from seawater and, in particular, highly saline solutions generated in desalination plants. Adsorptivities of adsorbents with various impregnation ratios of PPTPT were investigated for metal ions using various aqueous neutral and acid solutions. As the result, it was suggested that an adsorbent of a quaternary-ammonium-type anion exchange resin (AER) impregnated with PPTPT (PPTPT-AER) was promising for the selective recovery of U(VI) from aqueous NaCl solutions.
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