Removal of Radioactive Cesium from Surface Soils Solidified Using Polyion Complex Rapid Communication for Decontamination Test at Iitate-mura in Fukushima Prefecture

Hirochika NAGANAWA; Noriyuki KUMAZAWA; Hiroshi SAITOH; Nobuyuki YANASE; Hisayoshi MITAMURA; Tetsushi NAGANO; Kaoru KASHIMA; Tatsuya FUKUDA; Zenko YOSHIDA; Shun-ichi TANAKA

doi:10.3327/taesj.J11.017

This article has now been updated. Please use the final version.

Removal of Radioactive Cesium from Surface Soils Solidified Using Polyion Complex
Rapid Communication for Decontamination Test at Iitate-mura in Fukushima Prefecture

Hirochika NAGANAWA, Noriyuki KUMAZAWA, Hiroshi SAITOH, Nobuyuki YANASE, Hisayoshi MITAMURA, Tetsushi NAGANO, Kaoru KASHIMA, Tatsuya FUKUDA, Zenko YOSHIDA, Shun-ichi TANAKA

Author information

Hirochika NAGANAWA
Nuclear Science and Engineering Directorate, Japan Atomic Energy Agency
Noriyuki KUMAZAWA
Department of Biomolecular Functional Engineering, College of Engineering, Ibaraki University
Hiroshi SAITOH
ATOX Co., Ltd.
Nobuyuki YANASE
Nuclear Science and Engineering Directorate, Japan Atomic Energy Agency
Hisayoshi MITAMURA
Nuclear Science and Engineering Directorate, Japan Atomic Energy Agency
Tetsushi NAGANO
Nuclear Science and Engineering Directorate, Japan Atomic Energy Agency
Kaoru KASHIMA
ATOX Co., Ltd.
Tatsuya FUKUDA
Chiyoda Technol Corporation
NPO Radiation Safety Forum
Zenko YOSHIDA
Nuclear Science and Engineering Directorate, Japan Atomic Energy Agency
Shun-ichi TANAKA
NPO Radiation Safety Forum

Keywords: polyion complex, decontamination of surface soil, suppression of dust release, Iitate-mura, upland field in a plastic greenhouse, pasture, paddy field, radioactive cesium

JOURNAL FREE ACCESS Advance online publication

Article ID: J11.017

DOI https://doi.org/10.3327/taesj.J11.017

The final version of this article is now available: Vol. 10 (2011) , No. 4 p.227

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Abstract

We tried the decontamination of surface soils for three types of agricultural land at Nagadoro district of Iitate-mura (village) in Fukushima Prefecture, which is highly contaminated by deposits of radionuclides from the plume released from the Fukushima Daiichi nuclear power plant. The decontamination method consisted of the peeling of surface soils solidified using a polyion complex, which was formed from a salt solution of polycations and polyanions. Two types of polyion complex solution were applied to an upland field in a plastic greenhouse, a pasture, and a paddy field. The decontamination efficiency of the surface soils reached 90%, and dust release was effectively suppressed during the removal of surface soils.

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