Development of highly functionality magnetites and their application to removal of arsenic
| Project/Area Number |
18510077
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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 |
Environmental technology/Environmental materials
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| Research Institution | University of Miyazaki |
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Principal Investigator |
OHE Kaoru University of Miyazaki, Faculty of Engineering, Department of Applied Chemistry, Assistant Professor (00315350)
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| Co-Investigator(Kenkyū-buntansha) |
BABA Yoshinari University of Miyazaki, Faculty of Engineering, Department of Applied Chemistry, Professor (20039291)
OSHIMA Tatsuya University of Miyazaki, Faculty of Engineering, Department of Applied Chemistry, Associate Professor (00343335)
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| Project Period (FY) |
2006 – 2007
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| Project Status |
Completed (Fiscal Year 2007)
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| Budget Amount *help |
¥4,050,000 (Direct Cost: ¥3,600,000、Indirect Cost: ¥450,000)
Fiscal Year 2007: ¥1,950,000 (Direct Cost: ¥1,500,000、Indirect Cost: ¥450,000)
Fiscal Year 2006: ¥2,100,000 (Direct Cost: ¥2,100,000)
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| Keywords | magnetite / As(V) / As(III) / adsorbents / environmental materials / zero point of charge / high specific surface area / groundwater pollution / チタン / 吸着 / 除去 / フェライト / 砒素 / 吸着除去 / 環境浄化 |
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| Research Abstract |
New functional magnetites were prepared by addition of elements such as Zr, Si, Mg, Ce and Ti to magnetite, and their applications to arsenic adsorption were investigated. Although the Si-magnetite has high specific surface area and high performance for arsenic removal, it cannot be used for removal of arsenic in groundwater because Si was eluted from the Si-magnetite. On the other hand, the zero point of charge of pH (PH_<zpc>) of Zr, Ce and Ti-magnetites were in the neutral pH range and they have high specific surface areas. The important factors for arsenic removal, pH_<zpc> and specific surface area were controlled by introducing different elements and mole ratios of element/ Fe when magnetites were prepared. The addition of Zr, Si, Mg, Ce and Ti cause the low crystal-growth rate of the magnetites to result in the amorphous structures. Adsorption properties for arsenic were investigated using Zr, Ce and Ti-magnetite. It was shown that Zr, Ce-magnetite effectively removed arsenic from its low concentration Ti-magnetite with Ti /Fe = 1 has a high specific surface area, 240m^2/g and the adsorption capacities of As (V) and As (III) were 0.85 and 1.2, respectively. These results were 4 - 6 times of the adsorption capacity of arsenic of the previously reported magnetites.
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Report
(3 results)
Research Products
(16 results)
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[Journal Article] Removal of Arsenic from Contaminated Groundwater by Iron Oxide2006
Author(s)
K., Ohe, T., Oshima, Y., Baba, M., Shimikzu, Y., Miyake, T., Horikawa., H., Yokota
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Journal Title
Arsenic-Sympo in MIYAZAKI 2006 1st International symposium on Health Hazards of Arsenic Contamination of Groundwater and its Countermeasures From Tbroku to Asia
Pages: 162-165
Description
「研究成果報告書概要(欧文)」より
Related Report
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[Presentation] フェライト調製とヒ素の吸着除去2007
Author(s)
富松 塁、大栄 薫、大島 達也、馬場 由成
Organizer
第13回ヒ素シンポジウム
Place of Presentation
東海大学短期大学部
Year and Date
2007-11-24
Description
「研究成果報告書概要(和文)」より
Related Report
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[Presentation] Adsorption Properties of arsenic using ferrite micropartides2006
Author(s)
K., One, R., Tomimatsu, Y., Tagai, T., Oshima, Y., Baba
Organizer
The 38th Autumn Meeting of the Society of Chemical Engineers, Japan
Place of Presentation
Fukuoka
Description
「研究成果報告書概要(欧文)」より
Related Report
