Figure 7

The effect of initial dye concentration on the adsorption capacity of AF (a) and AO (b) dyes and corresponding isotherm curves (pH = 3.0, \(W\) = 0.100 g L⁻¹, \(C_{{\text{i}}}\) = 0.5–250 mg L⁻¹, \(t\) = 120 min, \(T\) = 25 °C, shaking speed = 180 rpm). The effect of time on the adsorption capacity of AF (c) and AO (d) dyes and corresponding kinetic curves (pH = 3.0, \(W\) = 0.100 g L⁻¹, \(C_{{\text{i}}}\) = 100 mg L⁻¹, \(t\) = 1–120 min, \(T\) = 25 °C, shaking speed = 180 rpm).