optimization and removal efficiency of basic textile dyestuffs with using perfluorosulfonic acid-based polymer

The removal of basic dyestuffs (basic red 46 and basic blue 41) from synthetic dye solutions was examined by using perfluorosulfonic acid-based polymer for the first time in the present study. the effects of four different variables, such as phs (3.0, 5.0, 7.0, 9.0, and 11.0), temperature (25 °c, 35 °c, 45 °c, 55 °c, and 65 °c), initial dyestuffs concentration (20, 40, 60, 80 and 100 mg l-1) and treatment time (20, 40, 60, 80 and 100 min.) on the removal performance were investigated. the optimum conditions were determined for r46 as ph: 6.5; temperature: 54.1 °c; concentration: 97.4 mg l-1; time: 60.8 min. and for b41 as ph: 7.5; temperature: 54.6 °c; concentration: 67.1 mg l-1; time: 69.5 min. by using response surface methodology. removal performance values for r46 and b41 were determined respectively 99.9% and 99.5% at the optimum conditions. also, perfluorosulfonic acid-based polymer was able to regenerate up to 20 cycles without significant performance change for the dyestuff removal process.