Biosorption of Zinc from Aqueous Solution Using Chemically Treated Rice Husk

Figure 2

Kinetics of Zn²⁺ adsorption by untreated rice husk and NaOH-treated rice husk (Zn²⁺ concentration: 25 mg/L; adsorbent dosage of 1 g/L, at 25°C, pH 3.5).