Polyurethane membrane: regeneration and chemical resistance

Abstract The use of polyurethane membranes is inseparable from its several advantages, including the minimal energy, fewer additional chemicals, and having good chemical resistance. membrane synthesized using red seaweed biomass (PUM-RSB) in this study was used as a filter ammonia filtration process water. specific objective research to regenerate test resistance membranes, study, an acid solution (H2SO4) salt (NaCl) were for washing PUM-RSB, because it uses principle desorption ionic bonds formed or other words ion exchange, characterization functional groups shows that there no change structure, but transmittance value (%T) between before after process. PUM-RSB evaluated 3% HCl, KOH, Aquadest, 50% Methanol, 5% NaCl, Fertilized soil ordinary soil. can be washed 0.1N H2SO4 performance membrane, tends resistant some chemicals by experiencing weight loss about 4-5% during one month storage. produced has besides regenerated So have potential applied various environmental conditions.