Figure 3: Effects of contact time (C= 200 mg/L; pH=9; T=20°C; adsorbent dose= 0.45g/L), initial pH solution (C= 300 mg/L; T=20°C; adsorbent dose= 0.45g/L), adsorbent dosage (pH=9; T=20°C; C= 100mg/L) on the adsorption of Cephalexin and Cefixime.