Abstract
The theories and principles of gas dissolution, release, and bubble formation in gas flotation systems are introduced in detail for process design, optimization, and operation. Also introduced is a new instrument for real-time measurement of bubble content and size distribution in a typical flotation system consisting of gas bubbles (gas phase) and bulk water (liquid phase). Specific engineering topics included in this chapter are: gas dispersion principles, gas dispersion tester, bubble tester operation, gas dispersion example, gas transfer principles, Henry’s Law constants, partial pressures, solubilities of various gases, gas dissolution and release, gas bubble formation and size distribution, bubble attachment, bubble rising and flotation, gas dissolution in water containing high dissolved solids or high salinity, and engineering design examples.
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