Applicability of the Acid Extraction Method to Radioactive Caesium Contaminated Soil

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  • YASUTAKA Tetsuo
    National Institute of Advanced Industrial Science and Technology
  • KAWAMOTO Toru
    National Institute of Advanced Industrial Science and Technology
  • KOMAI Takeshi
    National Institute of Advanced Industrial Science and Technology

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Other Title
  • 放射性セシウム含有土壌への酸抽出方法の適用性に関する基礎的検討
  • ホウシャセイ セシウム ガンユウ ドジョウ エ ノ サン チュウシュツ ホウホウ ノ テキヨウセイ ニ カンスル キソテキ ケントウ

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Abstract

An acid extraction method, being one of volume reduction technologies on soils contaminated with radioactive caesium, was carried out in this paper to obtain its fundamental knowledge and to clarify its applicability to clay soil.<br>Soil samples collected at nine months after the Fukushima Daiichi Nuclear Plant accident were extracted from acids under various conditions. Results showed that extraction efficiency for radioactive caesium ranged from 24 to 71% for nitric acid and was higher in sandy soil than in soil with high silt and clay ratio. Furthermore, about 50% of extraction efficiency was found in typical gray lowland soil of paddy field in Fukushima.

Journal

  • RADIOISOTOPES

    RADIOISOTOPES 62 (4), 211-218, 2013

    Japan Radioisotope Association

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