Published Paper Details:

The present study is based upon nano-filtration as a novel separation technique using TFC NF-30 membrane for the separation of manganese ions from synthetic waste water containing MnSO4.H2O salt. The effects of various operating parameters such as feed concentration (20-60 ppm), applied pressure (5-8 kg/cm2) and pH (4-6) on rejection of heavy metals are studied. The present works conclude that rejection coefficient for manganese ions increase with the increasing pressure. As the feed concentration of manganese ions increases at the constant flow rate the rejection coefficient decreases. The effect of the pH are studied and found that the rejection of the manganese ions increases with the increasing pH. The maximum rejection of the metal is found to be 99.03% for an initial feed concentration at 20 ppm. The experimental data are analyzed using membrane transport models; combined-film theory-solution-diffusion (CFSD). Estimation of the membrane transport parameters namely the solute transfer parameter by CFSD model.