Abstract
Abstract An important requirement for economical application of solvent extraction technology is rapid and efficient phase disengagement. However, much progress toward a clear fundamental understanding of the factors that affect phase disengagement rate will be needed before a logical approach to the problem will be possible. In this paper, we develop the conceptual framework for the study of drop-interface coalescence in collapsing liquid/liquid dispersions and present the details of the experimental setup employed in our initial work. The method for determining the drop-interface coalescence rate requires measurement of the average volume of drops (vf) adjacent to the interface, their number (n) per unit area of interface, and dispersed-phase throughput (Q) per unit area. We have employed recording videomicrography for measurement of vf and n, while Q is found from the changing position of the major interface as the dispersion band collapses (batch mode).
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