低温加熱処理による水銀汚染土壌浄化技術に関する基礎研究 Fundamental Study of Remediation Technology for Mercury Contaminated Soil by Low Temperature Thermal Treatment

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著者

    • 松山 明人 MATSUYAMA Akito
    • 大成建設株式会社技術本部技術開発第二部環境浄化技術開発室 Taisei Corporation Technology Division
    • 岡田 和夫 OKADA Kazuo
    • 大成建設株式会社技術本部技術開発第二部環境浄化技術開発室 Taisei Corporation Technology Division

抄録

While insolubilization and solidification are mainstream mercury treatment methods in the USA and Europe as well as Japan, soil washing with chelator or acid and heating and vaporization of contaminated soil (heating temperatures of 600 to 1000°C) as late techniques are being proposed. However, these emerging techniques have a few drawbacks, such as very high treatment costs for high-temperature heating or chemical washing, and the possibility of changing the natural soil characteristics. In order to overcome these drawbacks, we have undertaken fundamental laboratory work research to develop more suitable remediation technology. The method proposed in this paper, technically a soil heating method, uses catalysts and physico-chemical oxidation and reduction reaction, which allow heating temperature to be as low as 200 to 300°C and even allows treatment of mercuric silfide, considered to be the most stable mercury form among all mercury compounds. Our preliminary experiments with 2000 mg-Hg·kg-1 dry weight artificially contaminated soil and heating temperature 300°C showed that around 99% Mercury was removed.

収録刊行物

  • 水環境学会誌 = Journal of Japan Society on Water Environment  

    水環境学会誌 = Journal of Japan Society on Water Environment 22(2), 109-117, 1999-02-10 

    公益社団法人 日本水環境学会

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各種コード

  • NII論文ID(NAID)
    10004451633
  • NII書誌ID(NCID)
    AN10372439
  • 本文言語コード
    JPN
  • 資料種別
    ART
  • ISSN
    09168958
  • NDL 記事登録ID
    4654403
  • NDL 雑誌分類
    ZN5(科学技術--建設工学・建設業--都市工学・衛生工学)
  • NDL 請求記号
    Z16-1045
  • データ提供元
    CJP書誌  CJP引用  NDL  J-STAGE 
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