Inteligent treatment and disposal of soils contaminated cesium from accident of nuclear power plant at Fukushima
Project/Area Number |
24360369
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Research Category |
Grant-in-Aid for Scientific Research (B)
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Allocation Type | Partial Multi-year Fund |
Section | 一般 |
Research Field |
Earth system and resources enginnering
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Research Institution | Hokkaido University |
Principal Investigator |
SATO Tsutomu 北海道大学, 工学(系)研究科(研究院), 教授 (10313636)
|
Co-Investigator(Kenkyū-buntansha) |
KOGURE Toshihiro 東京大学, 理学研究科, 准教授 (50282728)
NAWA Toyoharu 北海道大学, 大学院工学研究院, 教授 (30292056)
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Project Period (FY) |
2012-04-01 – 2015-03-31
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Project Status |
Completed (Fiscal Year 2014)
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Budget Amount *help |
¥18,460,000 (Direct Cost: ¥14,200,000、Indirect Cost: ¥4,260,000)
Fiscal Year 2014: ¥4,420,000 (Direct Cost: ¥3,400,000、Indirect Cost: ¥1,020,000)
Fiscal Year 2013: ¥4,420,000 (Direct Cost: ¥3,400,000、Indirect Cost: ¥1,020,000)
Fiscal Year 2012: ¥9,620,000 (Direct Cost: ¥7,400,000、Indirect Cost: ¥2,220,000)
|
Keywords | 地質汚染修復 / セシウム / 土壌汚染 / 環境修復 / 福島 / 粘土鉱物 |
Outline of Final Research Achievements |
In this study, we conducted extraction and identification of particles fixed radioactive cesium from the soils at Fukushima to make proposal of applicable separation method for reduction in volume, and leaching experiments to make proposal safety solidification of cesium adsorbed zeolites. As the results of this study, the particles are categorized in the following three types, 1) coagulation of several mineral particles, 2) mineral-organic matter complex, and 3) weathered mica, and separated from non-contaminated particles by wet screening and using diatomite. These particles will be directly disposed after volume reduction of the contaminated soils because cesium already fixed into structure of the minerals in the particles. However, cesium released from the particles must be collected by adsorbents such as zeolite. We confirmed that the zeolite bearing cesium can be safely disposed after encapsulation by slag cement.
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Report
(4 results)
Research Products
(38 results)
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[Journal Article] A passive collection system for whole size fractions in river suspended solids2015
Author(s)
Matsunaga, T., Nakanishi, T., Atarashi-Andoh, M., Takeuchi, E., Tsuduki, K., Nishimura, S., Koarashi, J., Otosaka, S., Sato, T. and Nagao, S.
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Journal Title
J. Radioanal. Nucl. Chem.
Volume: 303
Pages: 1291-1295
DOI
Related Report
Peer Reviewed / Open Access
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[Journal Article] Na-montmorillonite dissolution rate determined by varying the Gibbs free energy of reaction in a dispersed system and its application to a coagulated system in 0.3M NaOH solution at 70℃2014
Author(s)
Oda, C., Walker, C., Chino, D., Ichige, S., Honda, A., Sato, T., and Yoneda, T.
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Journal Title
Applied Clay Science
Volume: 93-94
Pages: 62-71
DOI
Related Report
Peer Reviewed / Open Access
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[Journal Article] Mineral Synthesis in Si-Al-Ca Systems and Their Iodide Sorption Capacity under Alkaline Conditions2013
Author(s)
Liu, X. J., Asai, A., Sato, T., Opiso, E., Otake, T., and Yoneda, T.
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Journal Title
Water Air and Soil Pollution
Volume: 224
Pages: 1442-1455
DOI
Related Report
Peer Reviewed
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[Presentation] 福島県花崗岩中黒雲母の風化状態2014
Author(s)
倉又千咲, 菊池亮佑, 甕聡子, 小暮敏博
Organizer
第53回粘土科学討論会
Place of Presentation
福島A・O・Z(アオウゼ)、福島
Year and Date
2014-09-26 – 2014-09-26
Related Report
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[Presentation] パッシブ除染2014
Author(s)
佐藤努
Organizer
第53回粘土科学討論会
Place of Presentation
福島市 A ・ O ・ Z (アオウゼ )
Year and Date
2014-09-26 – 2014-09-26
Related Report
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[Presentation] 福島風化黒雲母へのCs吸着実験2014
Author(s)
菊池亮佑, 向井広樹, 小暮敏博, 田村堅志
Organizer
日本鉱物科学会2014年年会
Place of Presentation
熊本大学、熊本
Year and Date
2014-09-18 – 2014-09-18
Related Report
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