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Effect of Flowing Water on Sr Sorption Changes of Hydrous Sodium Titanate

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Title: Effect of Flowing Water on Sr Sorption Changes of Hydrous Sodium Titanate
Authors: Takahatake, Youko Browse this author
Shibata, Atsuhiro Browse this author
Nomura, Kazunori Browse this author
Sato, Tsutomu Browse this author →KAKEN DB
Keywords: Fukushima Daiichi Nuclear Power Station
radioactive contaminated water
hydrous sodium titanate
Sr sorption
X-ray photoelectron spectroscopy
Issue Date: 14-Dec-2017
Publisher: MDPI
Journal Title: Minerals
Volume: 7
Issue: 12
Start Page: 247
Publisher DOI: 10.3390/min7120247
Abstract: Radioactive contaminated water has been generated at the Fukushima Daiichi Nuclear Power station (F1NPS). Hydrous sodium titanate (SrTreat (R)) is able to remove radioactive Strontium (Sr) from this water. Knowing the amount of radioactive nuclides in the used as-received SrTreat (R) is important for effective disposal and deposition of the F1NPS waste. This study investigated changes in the ability of SrTreat (R) to sorb Sr, and to understand the causes of changes in the sorbing. An investigation of the Sr sorption ability of SrTreat (R) is important for calculating the initial radioactive inventory of used SrTreat (R). This study carries out Sr sorption studies with acid-base titrations and X-ray photoelectron spectroscopy (XPS) to characterize the properties. After exposure to simulated treated water for 99 h, the surface structure of the SrTreat (R) was changed, and the percentage of sorbed Sr and the buffer capacity for protons decreased. When the amount of radioactive nuclides contained in the used SrTreat (R) is calculated from the sorption data of the as-received SrTreat (R), the radioactive Sr content will be overestimated with a concomitant increase in the deposition and disposal costs of the used SrTreat (R).
Rights: © 2017 by the authors; licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/4.0/).
http://creativecommons.org/licenses/by/4.0/
Type: article
URI: http://hdl.handle.net/2115/70156
Appears in Collections:工学院・工学研究院 (Graduate School of Engineering / Faculty of Engineering) > 雑誌発表論文等 (Peer-reviewed Journal Articles, etc)

Submitter: 佐藤 努

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