Evaluation of Modified Bagasse Fly Ash Nanoparticles on Cadmium (II) Removal from Contaminated Waters

The present essay deals with adsorption of cadmium (Cd(II)) ion on to nano and micro scales of bagasse fly ash (BFA) from single component system. Bagasse fly ash is an industrial waste of sugar industry that used for removal of Cadmium ion under batch test conditions. Raw bagasse was pretreated with 0.1 N NaOH followed by 0.1 N CH3COOH before its application. Effect of various operating variables such as, solution pH, equilibrium time, adsorbent dose, adsorbate concentration on the removal of Cadmium has been studied. Maximum adsorption of cadmium occurred at a pH value of 6 using both adsorbent. A dose of 4 g.L-1 and 10 g.L-1nano and micro adsorbent was sufficient for the optimum removal of Cadmium ion respectively. Adsorption process by using nano and micro particles was attained equilibrium within 15 min and 80 min respectively. .The sorption data has been correlated with Freundlich and Langmuir adsorption models. The materials exhibit good adsorption capacity and the adsorption data followed the Freundlich model better than Langmuir model.