2011InternationalConferenceon.PDF

2011 International Conference on Biology, Environment and Chemistry IPCBEE vol.24 (2011) © (2011)IACSIT Press, Singapoore Adsorptive Removal of Copper from Aqueous Solution By Amberlite Cation-exchange Resin-Equilibrium And Kinetic Studies + Karthika Chandramohan , Sekar Marimuthu Post Graduate and Research Department of Chemistry, Sri Ramakrishna Mission VidyalayaCollege of Arts and Science, Coimbatore-641 020, Tamil Nadu, India. Abstract. In this study, Amberlite weak acid cation-exchange resin has been used as an adsorbent for Cu(II) removal from aqueous solutions. Adsorption studies were performed by varying metal ion concentration, pH, agitation time and weight of resin. Langmuir, Freundlich and Redlich-Peterson isotherm parameters were calculated using the equilibrium adsorption data. The ion-exchange process, which is pH dependant, indicated that maximum removal of Cu(II) was obtained at pH 5±0.1. Kinetic studies were carried out and the data obtained were applied to pseudo-first order and pseudo-second order kinetic models. Finally, the metal-laden resin can be regenerated effectively by HCl solution. Thus the results obtained from batch mode studies and various isotherm models indicate that Amberlite IRC86 is a promising adsorbent for removal of Cu(II) from contaminated waters. Key words: Adsorption, Cu(II) removal, Kinetic models, Isotherms, Desorption 1. INTRODUCTION The pollution of water resources due to the indiscriminate disposal of heavy metals has been causing worldwide concern for the last few de