In the present work dialysis process was examined using two types of easily available low
cost membranes; nylon and polyethylene. The mass transfer through the membranes was
affected by the flow rate of solutions passing by the membrane in parallel flow but with no
consistent pattern. The overall mass transfer coefficient of the membranes was less by 10
times than that published by other authors for commonly used membranes in dialysis
processes. A correlation was developed to predict the mass transfer coefficient and when
compared with experimental data showed acceptable agreement.