Fig. 7

The effect of internal droplet radius, in order of micrometer scale, on the percentage of toluene extraction, for a system with a globule of radius of 2000 µm, considering phases to be non-ideal mixture. The initial number of moles are \(1.36\times {10}^{-4}\text{ mol}\) of toluene and \(1.25\times {10}^{-4}\text{ mol}\) n-heptane, \(3.16\times {10}^{-4}\text{ mol}\) of water and \(4.43\times {10}^{-4}\text{ mol}\) of n-dodecane. The reservoir temperature and pressures are 298.15 K and 1 atm. The values used for the interfacial tension between the membrane-internal phases is \(39 \, \text{mN} / \text{m}\) and for external-membrane phase is \(53.7\, \text{mN} / \text{m}\).