| Budget Amount *help |
¥4,680,000 (Direct Cost: ¥3,600,000、Indirect Cost: ¥1,080,000)
Fiscal Year 2010: ¥650,000 (Direct Cost: ¥500,000、Indirect Cost: ¥150,000)
Fiscal Year 2009: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000)
Fiscal Year 2008: ¥2,340,000 (Direct Cost: ¥1,800,000、Indirect Cost: ¥540,000)
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| Research Abstract |
Commercial hydrotalcite calcined at 500℃ showed maximum phosphorous removal ratio. On the other hand, hydrotalcite vibro-milled for 6hrs under a dry condition showed maximum removal ratio of phosphorous on heating at 250℃. Consolidated bodies with high phosphorous removal and recovery efficiencies were obtained by carbonation of wet powder mixture of hydrotalcite and wollastonite at 80℃ for 3hrs under 0.4MPa CO_2 pressure followed by calcination at 500℃. These consolidated bodies showed enough durability against repeated phosphorous removal, ion exchange and heat treatment.
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