Fig. 7

Langmuir isotherm graph of the adsorption of BBR(▲) and VBR (●) with pomegranate peel (a) T = 4 °C, (b) T = 25 °C, (c) T = 45 °C (Conditions: for BBR, dye concentration = 25 ppm; adsorbent amount = 0.08 g; pH = 2; T = 4, 25, 45 °C; contact time: 20 min. For VBR, dye concentration = 25 mg/L; adsorbent amount = 0.15 g; pH = original pH; contact time: 20 min)