Characterization of H_𝟑PO_𝟒-Treated Rice Husk Adsorbent and Adsorption of Copper(II) from Aqueous Solution

Figure 1

Scanning electron micrograph of (a) rice husk with 1000 times of magnification and (b) H₃PO₄-treated rice husk with 3000 times of magnification.

(a)

(b)