| Budget Amount *help |
¥4,810,000 (Direct Cost: ¥3,700,000、Indirect Cost: ¥1,110,000)
Fiscal Year 2015: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2014: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2013: ¥1,950,000 (Direct Cost: ¥1,500,000、Indirect Cost: ¥450,000)
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| Outline of Final Research Achievements |
To study how water film wetting the surface of pores mediates the reaction and transport in a rock, water was passed through Berea sandstone under both the cases of water-saturated condition and unsaturated condition, and the amounts of elements dissolved from the rock were compared. Dissolution rate was predicted to be independent of water saturation if sufficient dissolution occurred via water film, but the result obtained was that the dissolution rate of Si under the unsaturated condition was 50% of that under the saturated condition. By comparing the cases of Berea sandstone and the other sandstone for which no difference of dissolution rate was observed between saturated condition and unsaturated condition, it is inferred that the efficiency of dissolution in water film depends heavily on the roughness of the pore surface.
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