NDLI: Study on Volume Reduction of Contaminated Soil by Radioactive Cesium Using Magnetic Separation

Content Provider	IEEE Xplore Digital Library
Author	Yoshida, Y. Sekiya, K. Nomura, N. Mishima, F. Akiyama, Y. Nishijima, S.
Copyright Year	2002
Abstract	This study intends to develop a new volume reduction method of the soil that is contaminated by radioactive cesium. The volume reduction process by the magnetic separation method is described as follows. First, the soil constituent particles with different particle sizes such as gravel, sand and clay are separated by classification. In this method, the clay, which mainly adsorbs cesium, is separated from the soil. Then, the magneto-Archimedes method is applied to the clay, that utilizes the difference of magnetic susceptibility of substances. The clay minerals consist of two principle types, 1 : 1 and 2 : 1 type. The 1 : 1 type clay mineral is diamagnetic and weakly adsorbs small amount of cesium, whereas the 2 : 1 type clay mineral is paramagnetic and strongly adsorbs a large amount of cesium. The recovery of paramagnetic 2 : 1 type clay mineral by superconducting magnet enables selective separation of high-dose soil. It will reduce the volume of contaminated soil. In this study, the separation of 1 : 1 and 2 : 1 type clay mineral by the magneto-Archimedes method was investigated. It was confirmed that it was possible to separate between 1 : 1 and 2 : 1 type clay mineral effectively. Based on the result, the magneto-Archimedes method was applied to the actual contaminated soil in Fukushima. It was shown that there was a possibility that the volume reduction of contaminated soil could be reduced.
Sponsorship	Council on Superconductivity Appl. Superconductivity Conference Inc MIT
Starting Page	1
Ending Page	5
Page Count	5
File Size	518348
File Format	PDF
ISSN	10518223
Volume Number	25
Issue Number	3
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2015-01-01
Publisher Place	U.S.A.
Access Restriction	One Nation One Subscription (ONOS)
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Soil Magnetic separation Superconducting magnets Minerals Magnetic susceptibility Manganese Magnetic flux magneto-Archimedes method volume reduction radioactive cesium clay mineral magnetic separation Clay mineral
Content Type	Text
Resource Type	Article
Subject	Condensed Matter Physics Electronic, Optical and Magnetic Materials Electrical and Electronic Engineering

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1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
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3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
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