2.2.4. Step 4. Mass Transfer Parameter Estimation

If the mass transfer correlation is given by Equation (14), the fitting of parameters *A*, *B*, *C*, and *D* can be realized through writing this as a linear equation in terms of these parameters:

$$\ln(sh) = A + B\ln(Re\_l) + C\ln\left(Re\_\mathcal{P}\right) + D\ln(Sc) \tag{34}$$

This is similar to the approach taken by Avlonitis et al. who sequentially determined the parameters by plotting ln(*sh*) against the log of different dimensionless numbers [29]. However, depending on the membrane being used, some of these values could be statistically insignificant in which case some terms may be eliminated to give a simpler

expression. In principle all the parameters can be fitted simultaneously using multivariable linear fitting.
