A simple simulation study of the design of a liquid-liquid extraction column for the possible test system Zn/D2EHPA has been carried out. The results show the behaviour of different reaction kinetic models and the effect of the mass transfer coefficients on the column design. A contamination factor has also been used to determine the effect of changing mass transfer coefficients on the liquid-liquid extraction performance. A sensitivity analysis has been carried out to determine which factors significantly influence the column design for a particular range of conditions.