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

Figure 1

Effect of initial solution pH on the adsorption of Co²⁺ and Cu²⁺ on (a) Cox and (b) SBox (contact time of 4 h, 0.79 mmol/L Cu²⁺, 0.85 mmol/L Co²⁺, 25°C, 150 rpm, 0.2 g/L Cox or SBox).

(a)

(b)