微生物の活性炭への付着が微生物活性に及ぼす影響  [in Japanese] Effect of Bacterial Adhesion on Activated Carbon on Bacterial Activity  [in Japanese]

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Author(s)

    • 西嶋 渉 NISHIJIMA Wataru
    • 広島大学工学部環境基礎化学講座 Department of Environmental Science, Faculty of Engineering, Hiroshima University
    • 岡田 光正 OKADA Mitsumasa
    • 広島大学工学部環境基礎化学講座 Department of Environmental Science, Faculty of Engineering, Hiroshima University

Abstract

This study was carried out to clarify the effects of bacterial adhesion on powdered activated carbon (PAC) on bacterial activity using nitrate reduction activity <i>E. coli</i> K-12. <i>E. coli</i> K-12 was incubated with or without PAC. Additional amount of PAC ranged from 300 to 5,000mg·<i>l</i><sup>-1</sup> at 7.75×10<sup>7</sup> cells·m<i>l</i><sup>-1</sup> or from 20 to 90mg·<i>l</i><sup>-1</sup> at 1.78×10<sup>8</sup> cells·m<i>l</i><sup>-1</sup> of <i>E. coli</i> K-12. The cells concentration was also changed from 2.23×10<sup>7</sup> to 1.58×10<sup>8</sup> cells·m<i>l</i><sup>-1</sup> at a constant concentration of PAC, 1,000mg·<i>l</i><sup>-1</sup>. High specific nitrate reduction rate was observed in cultures with PAC than those without PAC. The specific nitrate reduction rate increased with the increase in the ratio of adhered cells to total cells. The relationship between the specific nitrate reduction rate and the ratio of adhered cells to total cells was expressed by first order proportional equation. The results indicate that the adhesion of bacteria on activated carbon stimulates bacterial activity. The stimulation of bacterial activity did not result in adsorption of substrate, products or oxygen on PAC, therefore, it must depend on the interaction between adhered bacteria and the surface property of PAC.

Journal

  • Journal of Japan Society on Water Environment

    Journal of Japan Society on Water Environment 24(4), 240-243, 2001-04-10

    Japan Society on Water Environment

References:  22

Codes

  • NII Article ID (NAID)
    10008004859
  • NII NACSIS-CAT ID (NCID)
    AN10372439
  • Text Lang
    JPN
  • Article Type
    NOT
  • ISSN
    09168958
  • NDL Article ID
    5739360
  • NDL Source Classification
    ZN5(科学技術--建設工学・建設業--都市工学・衛生工学)
  • NDL Call No.
    Z16-1045
  • Data Source
    CJP  NDL  J-STAGE 
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