| Budget Amount *help |
¥4,940,000 (Direct Cost: ¥3,800,000、Indirect Cost: ¥1,140,000)
Fiscal Year 2016: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2015: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2014: ¥2,080,000 (Direct Cost: ¥1,600,000、Indirect Cost: ¥480,000)
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| Outline of Final Research Achievements |
In the purification of the contaminated water containing the radioactive Cs, it is condensed by absorption/adsorption using a nano-particulated adsorbent such as ultrafine zeolite and ferrocyanide metal salt, but the collection of the ultrafine adsorbent becomes the problem. Therefore, in this study, applicability of microbubble flotation (MBF) for recovering nano-particulated adsorbent was investigated and the separation behavior was discussed in terms of surface chemistry. At first it was found that a pH variation of in zeta potential of each adsorbent was not significant, and it was thought that a negative charge of the electric potential decreased by the cation exchange of the K ion. Next, the microbubble flotation tests using the adsorbents were carried out using a cationic collector by MBF. It was pointed out that electrostatic interaction was dominant because the pH range obtained high recoveries accorded with the pH range in which the particle possesses highly negative charge.
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