title: Kinetic behaviour of Duolite ES 468 in the cosorption of non-ionic surfactant and copper(II).
abstract: Kinetic behaviour of the hydrogen form of Duolite ES 468 polyacrylic acid-functionalised cation exchanger with respect to the sorption of non-ionic surfactant alkylmonoethers (ALM-10) and copper(II) has been investigated; kinetic curves have been obtained, using spectrophotometric determination for ALM-10 and complexometric one for copper(II). Kinetic coefficient (B), intraparticle diffusion coefficient (D; m(2)s(-1)) and overall rate constant (k(o); s(-1)) for non-ionic surfactant and copper(II) depend on the solution composition, pH and the maximum sorption at the equilibrium. On increasing the solution acidity from pH 5 to pH 3 a decrease in both D and the equilibrium sorption for copper(II) although an increase in D for ALM-10 is observed. The action of copper(II) results in an increase in both D for ALM-10 and the maximum sorption at the equilibrium, whereas the action of ALM-10 leads to a decrease in the corresponding parameters for copper(II). Hydrogen form of Duolite ES 468 polyacrylic acid-functionalised cation exchanger is suitable for the simultaneous removal of non-ionic surfactant and copper(II) from waste water.
authors.affiliation: Department of Ecological Chemistry, Institute of Chemistry, Gostauto 9, 2600, Vilnius, Lithuania.
authors.forename: D
authors.initials: D
authors.lastname: Kauspediene
authors.forename: J
authors.initials: J
authors.lastname: Snukiskis
authors.forename: A
authors.initials: A
authors.lastname: Gefeniene
mesh_terms: D000327:Adsorption; D002411:Cation Exchange Resins / Q000737:chemistry*; D003300:Copper / Q000737:chemistry*; D007700:Kinetics; D008962:Models, Theoretical; D013501:Surface-Active Agents / Q000737:chemistry*
chemical_list: D002411:Cation Exchange Resins; D013501:Surface-Active Agents; D003300:Copper