| Budget Amount *help |
¥4,420,000 (Direct Cost: ¥3,400,000、Indirect Cost: ¥1,020,000)
Fiscal Year 2015: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2014: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2013: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000)
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| Outline of Final Research Achievements |
The aims of this study were to elucidate mechanisms of insoluble mineral formation and to clarify the suitable soil physicochemical environment to form insoluble phases in soil in order to enhance the reliability of simultaneous lead and antimony immobilization in soil. In the soil with higher pore volume and higher ratio of water saturation, the amount of insoluble mineral formed was higher. The amount of lead leached was suppressed by the formation of insoluble mineral even in the soil with high lead mobility. These results demonstrate that the insoluble phases was formed reacting with the material during heavy metal or metalloid migration through the soil profile. The amount of insoluble mineral is higher in the soil with higher pore volume and higher ratio of water saturation; thus, it is suggested that in the case of water percolation in the contaminated site, the leaching of heavy metal or metalloid is suppressed.
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