Experimental analysis of microbubble stability in enhancing aluminum oxide recovery, suggesting effective surfactant use.
Fine bubbles have great potential in enhancing recovery and separation of fines. In this research article, the stability of microbubbles is examined. The influences of different surfactants on stability of microbubble dispersions are evaluated. The effect of physiochemical properties of liquid on bubble size, gas fraction, and its speed are also assessed. Various correlations are also introduced to determine the microbubble size and stability. The drainage kinetics of microbubbles are also analyzed by a mathematical model. The separation efficiency of microbubbles is also compared with previous works. In the current work, it was observed that the microbubble generation methods dictate the recovery of aluminum oxide particles at particular surfactant concentrations. For the same recovery, the cavitation method uses higher surfactant dosage. The obtained result reveals that Pluronic is more efficient surfactant in comparison with other surfactants used.
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Mewara et al. (2026) studied this question.
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