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Open Access Publications from the University of California

Removal of Oil from Aqueous Wastes by Flotation


The effects of electrolyte type and concentration on the separation of oil in water dispersions was examined experimentally. Flotation appears to be highly effective in removing droplets at high electrolyte concentrations or with aluminum sulfate under basic conditions. The efficiency of removal decreases with decreasing drop size limiting the effectiveness of flotation to droplets greater than several microns in diameter.

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