Fig. 5From: Environmentally benign Fe(III)–montmorillonite for rapid adsorption of methylene blue dye in aqueous medium under ambient conditionsRemoval of MB dye by at pH 7 by a stoichiometric amount of Fe(III)–Mt at different temperature. b Excess amount of Fe(III)–Mt at 0 and 30 °C. c Sub-stoichiometric amount of Fe(III)–Mt at 0 and 30 °CBack to article page