Figure 5

Henry (A), Langmuir (B), Freundlich (C) and D-R (D) adsorption isotherm fit of MB (m = 6 mg, C₀ = 5–300 mg L⁻¹, V = 25 mL, pH = 6, contact time was 150 min, temperature was 298 K, 308 K and 318 K, respectively); Henry (E), Langmuir (F), Freundlich (G) and D-R (H) adsorption isotherm fit of MV (m = 10 mg, C₀ = 10–200 mg L⁻¹, V = 25 mL, pH = 6, contact time was 150 min, temperature was 298 K, 308 K and 318 K, respectively) and Henry (I), Langmuir (J), Freundlich (K) and D-R (L) adsorption isotherm fit of Pb(II) (m = 10 mg, C₀ = 30–120 mg L⁻¹, V = 10 mL, pH = 6, contact time was 120 min, temperature was 298 K, 308 K and 318 K, respectively).