Eco-Friendly Adsorbent from Waste of Mint: Application for the Removal of Hexavalent Chromium

Figure 6

Effect of pH on the adsorption of Cr(VI) ions from aqueous solution using WM adsorbent at T = 298 K, time = 120 min, adsorbent dose W = 2 g/L, and [Cr(VI)] = 50 mg/L.