PREPARATION OF IMMOBILIZATION MATRIX WITH LOW OXYGEN PERMEABILITY AND ITS APPLICATION TO BIOLOGICAL DENITRIFICATION

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著者

    • Kozawa Taro KOZAWA Taro
    • Graduate School of science and Technology, Department of Chemistry and Chemical Engineering, Niigata University
    • WATANABE Atsuo
    • Graduate School of science and Technology, Department of Chemistry and Chemical Engineering, Niigata University
    • OHKAWA Akira
    • Graduate School of science and Technology, Department of Chemistry and Chemical Engineering, Niigata University

抄録

The effects of chemical composition of alginate (<I>i.e.</I>, M/ G ratio) and gelling agents on the effective diffusivity <I>D<SUB>E</SUB></I> of oxygen, nitrate and glucose were investigated for preparation of an immobilization matrix to entrap denitrifier. The ratio of <I>D<SUB>E</SUB></I> of oxygen to <I>D<SUB>W</SUB></I> in water for Ba-alginate gel was the lowest among Ca-, Sr- and Ba-alginate gels, and the value was only about one half. With increasing M/G ratios above about 0.5, the value of <I>D<SUB>E</SUB></I> of nitrate or glucose of alginate gels tended to decrease. Ba-alginate gel with M/G ratios below 0.5 was found to be suitable for immobilization of denitrifier.<BR>The effects of bulk dissolved oxygen (DO) concentration on the denitrification activity of the immobilized denitrifier was investigated. At DO concentrations up to about 2.5 mg/l, the immobilized denitrifier in Ba-alginate gel had almost the same activity to that under anoxic conditions. In addition, denitrification activity under oxic conditions was highest at a cell loading of about 3 g/l, and increased with increasing bead radius.

収録刊行物

  • Journal of chemical engineering of Japan

    Journal of chemical engineering of Japan 29(6), 1021-1026, 1996-12-01

    The Society of Chemical Engineers, Japan

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各種コード

  • NII論文ID(NAID)
    10003815823
  • 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
    4109691
  • 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  NDL  J-STAGE 
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