Enhanced Adsorption of Selenium Ions from Aqueous Solution Using Iron Oxide Impregnated Carbon Nanotubes

Figure 11

Adsorption kinetic for selenium removal: (a) pseudo-first-order and (b) pseudo-second-order model (agitation speed = 150 rpm, pH = 6, CNTs dosage = 10 mg, and initial concentration = 1 ppm).

(a)

(b)