Modified correction-factor analysis on membrane extraction in multipass countercurrent-flow external-recycle rectangular modules

In the present study the modified correction-factor analysis is introduced to investigate the Performances in multipass countercurrent-flow recycled membrane extractors, in which the unknown solute outlet concentrations are neither in the estimating equation for mass-transfer rate nor in the modified correction-factor charts, and thus the calculation is easy and direct without using the try-and-error method, which should be employed in the conventional correction-factor analysis. Experimental results confirm the prediction values for the extraction of acetic acid from aqueous solution by methyl isobutyl ketone in the double-pass device.

► The results of the conventional correction-factor analysis for mass exchanges are implicit.
► The results of the present modified correction-factor analysis are explicit.
► The mass transfer rate can be readily calculated without using try-and-error method in present study.
► The present modified correction-factor approach can be extended for application to various types of heat- and mass-exchangers.