Figure 2.

Adsorption isotherms of (a) Pb²⁺ and (b) Cd²⁺ on BSL-BC fitted with 4 isotherm models. The solutions containing 1 g/L BSL-BC and initial concentrations of 10–700 mg/L Pb²⁺ (pH 5.0) or 10–200 mg/L Cd²⁺ (pH 5.5) were mixed for 8 h at 180 rpm and 25 °C.