| Budget Amount *help |
¥4,940,000 (Direct Cost: ¥3,800,000、Indirect Cost: ¥1,140,000)
Fiscal Year 2017: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Fiscal Year 2016: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Fiscal Year 2015: ¥2,600,000 (Direct Cost: ¥2,000,000、Indirect Cost: ¥600,000)
|
|---|
| Outline of Final Research Achievements |
Novel hybrid (bifunctional) resins having both chelating ligand and counter cation moieties were investigated to establish effective aqueous boron separation. The hybrid resins having N-methyl-D-glucamine ligand and ammonium parts showed high chemosorption ability of boric acid at pH > ca. 10, whose ability was comparable to or more than that of commercially available boron-removing resins. In contrast, these resins desorbed almost quantitatively at pH 2. The results strongly suggest that the chelating ligand-cation hybrid resins is useful for a “gently pH-controlled” adsorption-desorption process of aqueous boron compounds, where weakly basic (pH 10)/acidic (pH 2) conditions are needed.
|
