978256.fig.003a
(a)
978256.fig.003b
(b)
Figure 3: Effect of contact time on Tyr adsorption by the prepared adsorbent: (a) variations in amount adsorbed and (b) variations in final concentration in comparison to Phe removal [9] (25°C; initial solution pH: 6; adsorbent dosage: 10 g·L−1; initial Tyr concentration: ■: 20 mg L−1; *: 30 mg L−1; ▲: 50 mg L−1;  ×75 mg L−1; ●: 100 mg L−1. Initial Phe concentration: □: 200 mg L−1; △: 500 mg L−1; ◯: 1000 mg L−1).