| Project/Area Number |
23404003
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| Research Category |
Grant-in-Aid for Scientific Research (B)
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| Allocation Type | Single-year Grants |
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| Section | 海外学術 |
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| Research Field |
Environmental technology/Environmental materials
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| Research Institution | Toyama Prefectural University |
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Principal Investigator |
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| Co-Investigator(Kenkyū-buntansha) |
TAFU Masamoto 富山高等専門学校, その他部局等, 教授 (50270244)
芹川 裕加 富山県立大学, 工学部, 研究員 (50598977)
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| Project Period (FY) |
2011-04-01 – 2014-03-31
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| Project Status |
Completed (Fiscal Year 2013)
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| Budget Amount *help |
¥9,490,000 (Direct Cost: ¥7,300,000、Indirect Cost: ¥2,190,000)
Fiscal Year 2013: ¥4,290,000 (Direct Cost: ¥3,300,000、Indirect Cost: ¥990,000)
Fiscal Year 2012: ¥2,080,000 (Direct Cost: ¥1,600,000、Indirect Cost: ¥480,000)
Fiscal Year 2011: ¥3,120,000 (Direct Cost: ¥2,400,000、Indirect Cost: ¥720,000)
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| Keywords | スリランカ / フッ素 / 鳥骨炭 / 地下水 / アパタイト / 井戸水 / 腎臓病 |
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| Research Abstract |
In the dry zone of Sri Lanka, such as north central province and southeast province, fluoride concentration in the well water is high enough to cause dental fluorosis and bone fluorosis. In this research, we measured 1300 well waters to determine the fluoride concentration of the well water in the whole counry. According to the analytical result, a spatial distribution map for fluoride was created.
To remove fluoride from well water, chicken bone char(CBC) was produced by pyrolysis at 600 C for 1 hour. Fluoride removal filter packed with CBC was operated by a family in Dambulla city of Sri Lanka to confirm the performance of the filter. It was revealed that 1400 L of the well water, which is equivalent to the averaged consumption of water for 140 days in a family with 4 person, could be treated by the filter containing 560 g of CBC. A kinetics model, which reproduced the fluoride concentration of treated water quite well, was established based on the first-order reaction.
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