Optimization of operation condition of water treatment system based on the in-situ observation of the reaction of arsenic, iron and manganese
| Project/Area Number |
20560506
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
Civil and environmental engineering
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| Research Institution | Kyoto University |
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Principal Investigator |
FUJIKAWA Yoko Kyoto University, 原子炉実験所, 准教授 (90178145)
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| Co-Investigator(Kenkyū-buntansha) |
SUGAHARA Masataka 大阪産業大学, 人間環境学部, 教授 (60026119)
HAMASAKI Tatsuhide 大阪産業大学, 人間環境学部, 准教授 (50340617)
YASHIMA Hiroshi 京都大学, 原子炉実験所, 助教 (40378972)
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| Project Period (FY) |
2008 – 2010
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| Project Status |
Completed (Fiscal Year 2010)
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| Budget Amount *help |
¥4,420,000 (Direct Cost: ¥3,400,000、Indirect Cost: ¥1,020,000)
Fiscal Year 2010: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Fiscal Year 2009: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2008: ¥1,820,000 (Direct Cost: ¥1,400,000、Indirect Cost: ¥420,000)
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| Keywords | 砒素 / 鉄 / マンガン / 鉄バクテリア / 除去 / 地下水 / XAFS / 酸化 / 吸着 / リアルタイム / 連続通水 / EXAFS |
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| Research Abstract |
During the first year of the project, the principal goal was the development of the procedure to obtain XAFS spectrum at the solid - liquid interface of the biological filter where oxidation of dissolved Mn(II) to Mn(III) or Mn(IV), and accumulation of the manganese oxides are taking place. This was achieved by boring a window (fitted with polyimide film) on the empty plastic column, packing the column with biological filter acclimated for Mn removal, and applying the quick XAFS measurement technique. In-situ measurement of manganese oxidation was possible when water containing 4 mg/L of Mn(II) was fed to the column. Likewise, an attempt was made to observe the removal of As(III) (arsenite,) at the solid - liquid interface of the biological filter when raw water containing Fe(II) and As(III) was treated. A house-made column that can resist the pressure build- up due to accumulation of iron hydroxides on the filter was used to obtain As K-edge spectra when water containing 8 mg/L or 40 mg/L of Fe and 4 mg/L of As was fed to the biological filter. The results suggested that As(3) was sorbed on the biologically formed iron oxides as As(3), and was gradually oxidized to As(5).
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Report
(4 results)
Research Products
(47 results)
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[Journal Article] 6-year pilot study of the biological filtration for low-cost arsenic removal2010
Author(s)
藤川陽子, 菅原正孝, 濱崎竜英, Yoneda, D., Minami, A., Sugimoto, Y., Iwasaki, H., 高田勝己, Tani, S.
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Journal Title
Arsenic in Geoshpere and Human Diseases
Pages: 457-459
Related Report
Peer Reviewed
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[Presentation] Biological Elimination of Iron, Manganese, Arsenic and Ammonia to Replace the Existing System2009
Author(s)
Y.Fujikawal, K.Takada, A.Minami, S.Tani, Y.Sugimoto, T.Hamasaki, M.Sugahara, K.Tonokai
Organizer
The 8th International Symposium on Water Supply, Kobe, Japan
Place of Presentation
Kobe
Year and Date
2009-06-11
Related Report
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[Presentation] 生物酸化鉄による3価砒素の吸着現象の特異性2009
Author(s)
藤川陽子, 南淳志, 杉本裕亮, 水嶋智之, 佐藤文仁, 濱崎竜英, 菅原正孝, 櫻井伸治, 八島浩, 本間徹生, 平山明香
Organizer
第43回日本水環境学会年会
Place of Presentation
山口
Year and Date
2009-03-18
Related Report
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[Presentation] 生物酸化鉄による3価砥素の吸着現象の特異性2009
Author(s)
藤川陽子, 南淳志, 杉本裕亮, 水嶋智之, 佐藤文仁, 濱崎竜英, 菅原正孝, 櫻井伸治, 八島浩, 本間徹生, 平山明香
Organizer
第41回日本水環境学会年会
Place of Presentation
山口大学
Year and Date
2009-03-18
Related Report
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