JFET_V10_N1_RP2 V.R. Sankar Cheela D.V. Padma Santhosh Kumar Subbarao Chirravuri Journal on Future Engineering and Technology 2230 – 7184 10 1 18 26 Malachite Green, Contact Time, Ph, Agitation, Equilibrium, % Removal This paper discusses the feasibility of using activated coir pith as adsorbent prepared from coconut husk for removal of Malachite Green. Batch adsorption experiments are performed by considering contact time, pH, speed of agitation and particle size as variables. The data on equilibrium is fitted to Freundlich, Langmuir, Sips and Tempkin isotherms. The xperimental data is found to be in close agreement with Tempkin adsorption isotherm (R2 value=0.93) followed by Sips and Freundlich (R2 value=0.913). Some experiments on % removal of Methylene blue using the same adsorbent suggested Malachite Green to be adsorbed better than Methylene blue. August - October 2014 Copyright © 2014 i-manager publications. All rights reserved. i-manager Publications http://www.imanagerpublications.com/Article.aspx?ArticleId=2907