wastewater treatmentusing Reverse osmosis membranes


Abstract in English

Poly(vinyl alcohol)(PVA)/cellulose acetate(CA) composite membranes were preparedfor metal ions removal from water. The top layer was modified by polyethylene glycol and glycerin,then irradiated with 32[J/cm2] photo dose to improve adequate selectivity for metal ions separation. The flux of water increased with increasingoperating pressure, and the maximum value of flux was 200[L/m2.h] at 4[bar] for the membrane(PVA68/PEG17/G15), but this membrane tear after applying pressure above 4[bar], while composite and CA membranes served for long time at pressures higher than (4[bar]). The rejection of ions decreased as the feed water pressure increased. The maximum percent retention of ions was found to be 97% for Pb+2, 96% for Cu+2, and 95% for Co+2at pressure of 2[bar] in composite membrane.

References used

(ESCOBAR,, I., BRUGGEN, B. (2011)" Modern applications in membrane science and technology" American Chemical Society Books, p(220-225
BHATTARYYA,D., HESTEKIN, J.,RITCHIE, S.,(2002)"An overview of selected membrane techniques for environmental applications" Journal of the Chinese Institute of Chemical Engineers, 33(6)310-330
BOLTO, B., TRAN, T., HOANG, M., XIE, Z.,(2009)"Crosslinked poly(vinyl alcohol) membranes"Prog. Polym. Sci. 34(3) 969–981

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