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Title: Remediation technology for cesium using microbubbled water containing sodium silicate
Authors: Ueda, Yoshikatsu  kyouindb  KAKEN_id  orcid (unconfirmed)
Tokuda, Yomei
Goto, Hiroshi
Author's alias: 上田, 義勝
徳田, 陽明
Keywords: Radioactive cesium
Sodium metasilicate
Issue Date: 13-Jan-2016
Publisher: Springer
Journal title: Radiological Issues for Fukushima's Revitalized Future
Start page: 79
End page: 88
Abstract: Remediation of materials contaminated with a radioactive material such as 137Cs is important for public health and environmental concerns. Here, we report the effectiveness of aqueous sodium metasilicate (SMC) prepared using a microbubble crushing process for the removal of radioactive 137Cs from contaminated materials. We have already reported that almost 80 % 137Cs removal was achieved for a nonwoven cloth sample in which multiple washings using low SMC concentrations were effective. In addition, the volume of the waste solution can be reduced by neutralizing the SMC and using gelation to remove the radioactive material. We also attempt to clarify the mechanism of SMC operation by measuring its electrical properties. Decontamination is shown to be more efficient with SMC than with sodium hydroxide, even for washing granule conglomerates.
Rights: © The Author(s) 2016
This chapter is distributed under the terms of the Creative Commons Attribution Noncommercial License, which permits any noncommercial use, distribution, and reproduction in any medium, provided the original author(s) and source are credited.
DOI(Published Version): 10.1007/978-4-431-55848-4_8
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