
The use of activated carbon-MnO2 nano composite for the removal of Bismarck Brown Y, a most widely used basic dye has been studied. The effect of several parameters such as adsorbent dose, contact time, initial dye concentration, pH and temperature has been evaluated. The adsorption data were analysed by using adsorption isotherms like Langmuir, Freundlich and Tempkin isotherms. The study has found that the nano composite adsorbent play an effective role in removing the Bismarck Brown Y from its aqueous solution.