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Hybrid micro-particles as a magnetically-guidable decontaminant for cesium-eluted ash slurry

Decontamination of the radioactive cesium that is widely dispersed owing to a nuclear power station accident and concentrated in fly ash requires an effective elimination system. Radioactive fly ash contains large amounts of water-soluble cesium that can cause severe secondary contamination and repr...

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Autores principales: Namiki, Yoshihisa, Ueyama, Toshihiko, Yoshida, Takayuki, Watanabe, Ryoei, Koido, Shigeo, Namiki, Tamami
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Nature Publishing Group 2014
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4155733/
https://www.ncbi.nlm.nih.gov/pubmed/25192495
http://dx.doi.org/10.1038/srep06294
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author Namiki, Yoshihisa
Ueyama, Toshihiko
Yoshida, Takayuki
Watanabe, Ryoei
Koido, Shigeo
Namiki, Tamami
author_facet Namiki, Yoshihisa
Ueyama, Toshihiko
Yoshida, Takayuki
Watanabe, Ryoei
Koido, Shigeo
Namiki, Tamami
author_sort Namiki, Yoshihisa
collection PubMed
description Decontamination of the radioactive cesium that is widely dispersed owing to a nuclear power station accident and concentrated in fly ash requires an effective elimination system. Radioactive fly ash contains large amounts of water-soluble cesium that can cause severe secondary contamination and represents a serious health risk, yet its complete removal is complicated and difficult. Here it is shown that a new fine-powder formulation can be magnetically guided to eliminate cesium after being mixed with the ash slurry. This formulation, termed MagCE, consists of a ferromagnetic porous structure and alkaline- and salt-resistant nickel ferrocyanide. It has potent cesium-adsorption- and magnetic-separation-properties. Because of its resistance against physical and chemical attack such as with ash particles, as well as with the high pH and salt concentration of the ash slurry, MagCE simplifies the decontamination process without the need of the continued presence of the hazardous water-soluble cesium in the treated ash.
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spelling pubmed-41557332014-09-10 Hybrid micro-particles as a magnetically-guidable decontaminant for cesium-eluted ash slurry Namiki, Yoshihisa Ueyama, Toshihiko Yoshida, Takayuki Watanabe, Ryoei Koido, Shigeo Namiki, Tamami Sci Rep Article Decontamination of the radioactive cesium that is widely dispersed owing to a nuclear power station accident and concentrated in fly ash requires an effective elimination system. Radioactive fly ash contains large amounts of water-soluble cesium that can cause severe secondary contamination and represents a serious health risk, yet its complete removal is complicated and difficult. Here it is shown that a new fine-powder formulation can be magnetically guided to eliminate cesium after being mixed with the ash slurry. This formulation, termed MagCE, consists of a ferromagnetic porous structure and alkaline- and salt-resistant nickel ferrocyanide. It has potent cesium-adsorption- and magnetic-separation-properties. Because of its resistance against physical and chemical attack such as with ash particles, as well as with the high pH and salt concentration of the ash slurry, MagCE simplifies the decontamination process without the need of the continued presence of the hazardous water-soluble cesium in the treated ash. Nature Publishing Group 2014-09-05 /pmc/articles/PMC4155733/ /pubmed/25192495 http://dx.doi.org/10.1038/srep06294 Text en Copyright © 2014, Macmillan Publishers Limited. All rights reserved http://creativecommons.org/licenses/by-nc-sa/4.0/ This work is licensed under a Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International License. The images or other third party material in this article are included in the article's Creative Commons license, unless indicated otherwise in the credit line; if the material is not included under the Creative Commons license, users will need to obtain permission from the license holder in order to reproduce the material. To view a copy of this license, visit http://creativecommons.org/licenses/by-nc-sa/4.0/
spellingShingle Article
Namiki, Yoshihisa
Ueyama, Toshihiko
Yoshida, Takayuki
Watanabe, Ryoei
Koido, Shigeo
Namiki, Tamami
Hybrid micro-particles as a magnetically-guidable decontaminant for cesium-eluted ash slurry
title Hybrid micro-particles as a magnetically-guidable decontaminant for cesium-eluted ash slurry
title_full Hybrid micro-particles as a magnetically-guidable decontaminant for cesium-eluted ash slurry
title_fullStr Hybrid micro-particles as a magnetically-guidable decontaminant for cesium-eluted ash slurry
title_full_unstemmed Hybrid micro-particles as a magnetically-guidable decontaminant for cesium-eluted ash slurry
title_short Hybrid micro-particles as a magnetically-guidable decontaminant for cesium-eluted ash slurry
title_sort hybrid micro-particles as a magnetically-guidable decontaminant for cesium-eluted ash slurry
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4155733/
https://www.ncbi.nlm.nih.gov/pubmed/25192495
http://dx.doi.org/10.1038/srep06294
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