Biosorption of Zinc from Aqueous Solution Using Chemically Treated Rice Husk

Figure 1

Effect of pH on the removal of Zn²⁺ onto untreated rice husk and NaOH-treated rice husk (Zn²⁺ concentration: 25 mg/L; adsorbent dosage of 0.1 g/L, at 25°C).