Electrical Double Layers and Colloidal Flocculation

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  • ADACHI Yasuhisa
    Graduate School of Life and Environmental Sciences, University of Tsukuba
  • KOBAYASHI Motoyoshi
    Graduate School of Life and Environmental Sciences, University of Tsukuba
  • FENG Lili
    Graduate School of Life and Environmental Sciences, University of Tsukuba
  • TSUJIMOTO Yoko
    Graduate School of Life and Environmental Sciences, University of Tsukuba
  • YAMASHITA Yuji
    Nuclear Science and Engineering Directorate, Japan Atomic Energy Agency

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Other Title
  • 電気二重層とコロイド分散系の凝集
  • デンキ ニジュウソウ ト コロイド ブンサンケイ ノ ギョウシュウ

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Abstract

The electrical double layer is a well-known concept of a charged surface in an electrolyte solution. In the present article, we go back to the original history of electrokinetics to note how the concept has been established. In the first approximation, we pay attention to one dimensional plate model and discuss on the effectiveness of the DLVO theory in relation to the stability of colloidal dispersion. It is already about seventy years from the proposal of the DLVO theory and its effectiveness has been discussed in many respects. Nevertheless, there still exist unanswered important questions on the flocculation of charged colloids moving with diffusive electrical double layer. In terms of history and progress in technology, an approach using fluid mechanics will be essentially important in future.

Journal

  • Oleoscience

    Oleoscience 13 (7), 299-307, 2013

    Japan Oil Chemists' Society

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