Removal of Methylene Blue Dye from its Aqueous Solution by Fruit Shell of Aegle Mermelose as Alternative Low Cost Adsorbent

摘要

In this present work,the use of low cost and ecofriendly adsorbent has been investigated as an ideal alternative for removal of dye from its aqueous solution.Fruit shell of aegle mermelose was collected from local area of Orissa,India and converted into a low cost adsorbent.Batch adsorption experiment of a cationic dye,methylene blue onto adsorbent prepared from fruit shell from aqueous solution with respect to the initial dye concentration,temperature,contact time and adsorbent dosage were investigated.It was found that the amount of methylene blue adsorbed decreases with adsorbent dosages,but increases with initial dye concentration and with contact time.Temperature had a mixed effect on the amount of adsorption which depends on the range of temperature.The sorption experiment was analyzed using pseudo-first-order and pseudo-second-order kinetic models and the sorption kinetics was found to follow a pseudo-second-order kinetic model.Rate constants at different initial concentrations were also estimated.The equilibrium data predominantly follow the most widely used non-linear Freundlich isotherm which has the general form of q_e=K_f C_e~(1/n),where Freundlich adsorption constants.K_f and n were also determined.