Figure 3

(a) Adsorption of RBBR by DPSAC versus time at 30 °C for different initial concentration (0.2 g adsorbent dosage and 200 ml of solution at its original pH); (b) Removal of RBBR by DPSAC versus time at 30 °C for different initial concentration (0.2 g adsorbent dosage and 200 ml of solution at its original pH).