Oxidized Renewable Materials for the Removal of Cobalt(II) and Copper(II) from Aqueous Solution Using in Batch and Fixed-Bed Column Adsorption

Figure 4

FTIR spectra of (a) Cox, Cox-D-Cu²⁺ and Cox-D-Co²⁺ and (b) SBox, SBox-D-Cu²⁺ and SBox-D-Co²⁺.

(a)

(b)