Removal of toxic heavy metal pollutants from waste water and aqueous solution by using perforated polymeric Nano level blend membranes - An approach of computer program based mathematical modeling and simulation

Abstract

A fluid transport process for purifying waste water containing heavy and toxic metal and metal oxides such as chromium has been studied. Nanofiltration processes are largely being applied for macromolecular and heavy metal ion separation from aqueous streams. Cellulose acetate and sulfonated polyimide blend Nanofiltration membranes were prepared by precipitation phase inversion technique in 70/30, 80/20, 90/10 and 100/0 % the polymer blend compositions and subjected to the rejection of chromium at different concentrations such as 200,400,800 and 1000ppm. As the chromium ions are too small to be retained by the filter, they are first complexed with a water-soluble macroligand ( Poly methyl methacrylate). This article envisaged the affecting factors such as Rejection percentage, permeate flux like pH,  Solute concentration, The of PMMA concentration  in mass%, Membrane pressure for all new blended membranes were investigated. The percentage rejection and permeate flux of the blend membranes were compared with pure Cellulose acetate blended NF membranes.