A Comparative Study of Raw and Metal Oxide Impregnated Carbon Nanotubes for the Adsorption of Hexavalent Chromium from Aqueous Solution

Figure 3

Effect of pH on the percentage removal of Cr(VI) (initial concentration = 1 mg/L, agitation speed = 200 rpm, adsorbent dosage = 200 mg, and time = 2 hours).