下水汚泥焼却灰のアルカリ溶出特性

DOI
  • 高橋 泰弘
    (財) 川崎市下水道公社入江崎総合スラッジセンター

書誌事項

タイトル別名
  • Characteristics of Alkali Elution on Incinerator Ash of Sewage Sludge

抄録

In order to recover a useful resource from the incinerator ash of sewage sludge, an examination of elution was conducted by soaking in sodium hydroxide solution. Using 4 samples of incinerator ash with different phosphorus contents, the elution property of phosphorus and useful elements was clarified. For phosphorus, the role of temperature and time in elution was verified. The concentration of the incinerator ash and its temperature were studied in order to determine effective elution conditions for aluminum and zinc. The elution content of aluminum was not related to aluminum concentration in the ash, but rose in relation to the phosphorus content in the ash. Because phosphorus and aluminum were the same characteristics of elution despite aluminum content ratio, it is assumed that aluminum phosphate is eluted in ash. This showed that the elution ratio of aluminum is related to temperature and ash concentration. The maximum elution rate of zinc was 16%, when elution was performed at 80°C using 10% Sodium Hydroxide solution.

収録刊行物

  • 廃棄物学会論文誌

    廃棄物学会論文誌 15 (6), 491-499, 2004

    一般社団法人 廃棄物資源循環学会

キーワード

詳細情報 詳細情報について

  • CRID
    1390001205297674368
  • NII論文ID
    130001758470
  • DOI
    10.3985/jswme.15.491
  • ISSN
    1883163X
    18831648
  • 本文言語コード
    ja
  • データソース種別
    • JaLC
    • Crossref
    • CiNii Articles
  • 抄録ライセンスフラグ
    使用不可

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