Removal of Nitrate Anion by Carbonaceous Materials Prepared from Bamboo and Coconut Shell

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The adsorption behavior of nitrate anion was investigated from aqueous solution using activated carbon (AC) prepared from coconut shells and charcoal (CB) prepared from bamboo. The adsorption of nitrate anions on these adsorbents exhibited maximum values in the region of equilibrium pH 2–4, and was explained by the adsorption of the Langmuir type. The adsorption capacity and the adsorption equilibrium constant for AC were 2.66 × 10<SUP>–1</SUP> mmol·g<SUP>–1</SUP> and 2.72 dm<SUP>3</SUP>·mmol<SUP>–1</SUP>, respectively, and those for CB were 1.04 × 10<SUP>–1</SUP> mmol·g<SUP>–1</SUP> and 3.53 dm<SUP>3</SUP>·mmol<SUP>–1</SUP>, respectively, at 303 K. The order of the adsorption capacity was the same as the order of their specific surface areas. This suggests that the specific surface area is one of the factors that determine the adsorption ability for nitrate anions. The theoretical curves calculated using these values were in good agreement with the experimental data. From the obtained thermodynamic parameters, it was found that the adsorption of nitrate anions on AC and CB contributes to the hydrophobic interaction.

収録刊行物

  • Journal of chemical engineering of Japan

    Journal of chemical engineering of Japan 36(4), 511-515, 2003-04-01

    公益社団法人 化学工学会

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各種コード

  • NII論文ID(NAID)
    10013413102
  • NII書誌ID(NCID)
    AA00709658
  • 本文言語コード
    ENG
  • 資料種別
    ART
  • ISSN
    00219592
  • NDL 記事登録ID
    6514668
  • NDL 雑誌分類
    ZP1(科学技術--化学・化学工業)
  • NDL 請求記号
    Z53-R395
  • データ提供元
    CJP書誌  CJP引用  NDL  J-STAGE 
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