Practical Approach to Decontamination of Radioactive Cesium-Contaminated Matter in Agricultural Region by Improved Wet Classification and Use of Geomaterials

DOI Web Site 11 Citations 8 References
  • ITO Kenichi
    Department of Geo Environmental Preservation, Center for International Relations, University of Miyazaki Department of Geo Environmental Preservation, Center for International Relations, University of Miyazaki
  • MIYAHARA Hidetaka
    Environmental Remediation Materials Unit, Environment and Energy Materials Division, National Institute for Materials Science Environmental Remediation Materials Unit, Environment and Energy Materials Division, National Institute for Materials Science
  • UJIIE Toru
    Japan Conservation Engineers & Co., Ltd. Japan Conservation Engineers & Co., Ltd.
  • TAKESHIMA Toshikatsu
    Astec Tokyo Co., Ltd. Astec Tokyo Co., Ltd.
  • YOKOYAMA Shingo
    Nuclear Fuel Cycle Backend Research Center, Civil Engineering Research Laboratory, Central Research Institute of Electric Power Industry Nuclear Fuel Cycle Backend Research Center, Civil Engineering Research Laboratory, Central Research Institute of Electric Power Industry
  • NAKATA Kotaro
    Nuclear Fuel Cycle Backend Research Center, Civil Engineering Research Laboratory, Central Research Institute of Electric Power Industry Nuclear Fuel Cycle Backend Research Center, Civil Engineering Research Laboratory, Central Research Institute of Electric Power Industry
  • NAGANO Tetsushi
    Nuclear Science and Engineering Directorate, Japan Atomic Energy Agency Nuclear Science and Engineering Directorate, Japan Atomic Energy Agency
  • SATO Tsutomu
    Division of Sustainable Resources Engineering, Department of Socio-Environmental Engineering, Faculty and Graduate School of Engineering, Hokkaido University Division of Sustainable Resources Engineering, Department of Socio-Environmental Engineering, Faculty and Graduate School of Engineering, Hokkaido University
  • HATTA Tamao
    Environmental Resources Division, Japan International Research Center for Agricultural Sciences Environmental Resources Division, Japan International Research Center for Agricultural Sciences
  • YAMADA Hirohisa
    Environmental Remediation Materials Unit, Environment and Energy Materials Division, National Institute for Materials Science Environmental Remediation Materials Unit, Environment and Energy Materials Division, National Institute for Materials Science

Bibliographic Information

Other Title
  • 湿式分級洗浄および天然鉱物等による農地土壌等に含まれる放射性セシウム除去方法の実践的検討
  • シッシキ ブンキュウ センジョウ オヨビ テンネン コウブツ トウ ニ ヨル ノウチ ドジョウ トウ ニ フクマレル ホウシャセイ セシウム ジョキョ ホウホウ ノ ジッセンテキ ケントウ

Search this article

Description

  In the radiation dosimetry of radiocesium in Iitate, Fukushima, the level of radiocesium around the environment did not exceed the criteria in liquid phases such as puddle water, but was distributed in solid phases such as some soil types and organic matter. On the other hand, retting of the cut bamboo grass and hemlock fir in water allowed the release of radiocesium, about 230 Bq/kg exceeding the criteria for a bathing area. The flow-thru test using zeolite showed the removal of radiocesium from the liquid phase. The wet classification test was performed for 3 types of radiocesium-contaminated soil. According to the results of wet classification, radiocesium was detected and its level exceeded the cropping restriction level in almost all classified particle fractions. The decontamination effect of wet classification on radiocesium contamination was smaller than that on heavy metal contamination. Specifically, the wet classification could not induce volume reduction. Accordingly, preprocessing and intermediate treatments such as dispersion or attrition by vibration or mixing in the wet classification process were devised and examined as improved processing techniques. As a result, the effectual volume reduction of the radiocesium-contaminated soil was confirmed by adding an intermediate process such as the surface attrition in the vibrator.<br>

Journal

Citations (11)*help

See more

References(8)*help

See more

Keywords

Details 詳細情報について

Report a problem

Back to top