Heavy Metal Removal from Aqueous Media Using Lignocellulosic Waste Material (Corn Stalk)
Chromium showed peak adsorption at pH 2 (67%), consistent with electrostatic attraction of chromate anions to protonated surface sites, while the four cationic metals performed best at pH 6. Unlike many lignocellulosic biosorbents, equilibrium data for all five metals including Cr(VI) conformed to the Langmuir isotherm...