2010 Fiscal Year Final Research Report
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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| Keywords | 砒素 / 鉄 / マンガン / 鉄バクテリア / 除去 |
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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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[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
Peer Reviewed
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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
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[Remarks] ホームページ等
