| Budget Amount *help |
¥5,460,000 (Direct Cost: ¥4,200,000、Indirect Cost: ¥1,260,000)
Fiscal Year 2014: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Fiscal Year 2013: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Fiscal Year 2012: ¥3,120,000 (Direct Cost: ¥2,400,000、Indirect Cost: ¥720,000)
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| Outline of Final Research Achievements |
Acidithiobacillus ferrooxidans MON-l was immobilized on various pellet-shaped grains for volatilization and recovery of mercury from mercury-polluted soil and wastewater. The bacterium was grown by electrochemical cultivation at 30℃ in 9K ferrous iron medium (pH 2.5). In the present study, a highly efficient electrochemical cultivation system was developed. The immobilized A. ferrooxidans MON-1 cells can volatilize both inorganic and organic mercuric compounds from mercury medium. This study shows feasible and economical immobilization materials for the bioremediation treatment of mercuric compounds. In addition, the enzyme of iron-oxidization bacterium used for the bioleaching was clarified.
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