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

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

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

Reference: Transactions of the Atomic Energy Society of Japan, Released 2011/09/27

DOI: http://dx.doi.org/10.3327/taesj.J11.017

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

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.

ＵＲＬ：https://www.jstage.jst.go.jp/article/taesj/advpub/0/advpub_J11.017/_article