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Fundamental study of conditioning of wastes generated from several contaminated water treatment devices in Fukushima Daiichi Nuclear Power Station

Meguro, Yoshihiro ; Sato, Junya ; Kato, Jun ; Nakagawa, Akinori ; Koma, Yoshikazu  ; Ashida, Takashi 

A large quantity of contaminated water is accumulated in nuclear reactor buildings in Fukushima Daiichi Nuclear Power Station. Because various radionuclides are dissolved in the accumulated water, several decontamination devices based on deposition and adsorption are used for the decontamination. Therefore, several sludge and used adsorption materials are generated. These most are different from wastes caused by the operation of commercial nuclear power stations so far in properties, and these have not been disposed of commercially. As then feasibility of conventional solidification techniques to the wastes should be investigated prior to selection of solidification technique of the wastes. In this study as a first step of feasibility study, three types of sludge and three absorbents were solidified using cement materials and solidification behavior and properties of solidified material were investigated, and then feasibility of cementation to these wastes was evaluated.

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