膜シリーズ　２０　　イオン交換膜電気透析における電流密度分布と限界電流密度

DOI

書誌事項

タイトル別名
  • Membrane Series. 20. Current Density Distribution and Limiting Current Density in Ion-Exchange Membrane Electrodialysis.

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説明

The limiting current density equation of an ion-exchange membrane electrodialyzer contains the current density non-uniformity coefficient ζ. In order to clarify the characteristics of ζ, current density distribution theory is developed as follows: Electrodes are conductors and their electrical resistance and ohmic loss are negligibly small compared to the values between the electrodes. Accordingly, the voltage between the electrodes at the inlets of desalting cells Vin, are regarded as nearly equal to the value at the exit Vout, and at the position p distant from the inlets of desalting cells Vp; Vin=Vout (1) and Vin=Vp (2) . p is the dimensionless distance from the inlet of a desalting cell at which current density is equal to the average current density of an electrodialyzer. Current density distribution is expressed by the quadratic equation: i=a1+a2 (x/l) +a3 (x/l) 2 (3), l, flow length of a desalting cell; x, the distance from the inlet of a desalting cell. Developing Eqn. (1), (2) and (3), ζ, p, a1, a2 and a3 are obtained. The theory agrees with the experimental results.

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詳細情報 詳細情報について

  • CRID
    1390001204435228032
  • NII論文ID
    130004162222
  • DOI
    10.5182/jaie.11.2
  • ISSN
    18843360
    0915860X
  • 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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