title: Adsorption characteristics of Cu(II) onto ion exchange resins 252H and 1500H: kinetics, isotherms and error analysis.
abstract: The adsorption of Copper(II) onto Amberjet 1500H and Ambersep 252H synthetic ion exchange resins have been studied. All the studies were conducted by a batch method to determine equilibrium and kinetic studies at the solution pH of 5.8 in the concentration ranges from 10 to 20mg/L. The experimental isotherm data were analyzed using the Freundlich, Langmuir, Redlich Perterson, Temkin, Dubinin-Radushkevich equations. Correlation co-efficient was determined for each isotherm analysis. Error functions have been used to determine the alternative single component parameters by non-linear regression due to the bias in using the correlation coefficient resulting from linearisation. From the error analysis the EABS error function provides the best parameters for the isotherm equation in this system. Adsorption kinetics data were tested using pseudo-first-order, pseudo-second-order and intraparticle diffusion models. Kinetic studies showed that the adsorption followed a pseudo-second-order reaction. The initial sorption rate, pseudo-first-order, pseudo-second-order and intraparticle diffusion rate constants for different initial concentrations were evaluated and discussed.
authors.affiliation: Nuclear Chemistry Research Division, Korea Atomic Energy Research Institute, Daejeon 305-353, South Korea. srengaraj1971@yahoo.com
authors.forename: Selvaraj
authors.initials: S
authors.lastname: Rengaraj
authors.forename: Jei-Won
authors.initials: JW
authors.lastname: Yeon
authors.forename: Younghun
authors.initials: Y
authors.lastname: Kim
authors.forename: Yongju
authors.initials: Y
authors.lastname: Jung
authors.forename: Yeong-Keong
authors.initials: YK
authors.lastname: Ha
authors.forename: Won-Ho
authors.initials: WH
authors.lastname: Kim
mesh_terms: D000327:Adsorption; D003300:Copper / Q000737:chemistry*; D004058:Diffusion; D006863:Hydrogen-Ion Concentration; D007475:Ion Exchange Resins / Q000737:chemistry*; D007700:Kinetics; D008956:Models, Chemical; D013816:Thermodynamics; D013997:Time Factors
chemical_list: D007475:Ion Exchange Resins; D003300:Copper