| Budget Amount *help |
¥4,550,000 (Direct Cost: ¥3,500,000、Indirect Cost: ¥1,050,000)
Fiscal Year 2019: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Fiscal Year 2018: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Fiscal Year 2017: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
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| Outline of Final Research Achievements |
The purpose of this study is to develop a technique to precipitate heavy metal ions in water as hydroxides or oxides by oxidation reaction by solid catalyst and to recover them for reuse.
Here, divalent iron ions contained in high concentrations in the mine water were removed by a solid catalyst which shows autocatalytic reaction. A maximum iron ion removal rate of more than 90% was obtained by using the solid catalyst derived from iron sulfate. Next, a combination of the gravitational sedimentation and magnetic separation methods was investigated as a separation method for the precipitates. Finally, a sustainable treatment system of mine water that does not rely on an external power source using solar power was proposed.
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