Examination of isotherms and kinetics of surfactant adsorption with modified poly (ethylene terephthalate) fibers

In this research, the graft copolymerization of 2-hydroxy propyl methacrylate-acrylic acidmixture onto poly (ethylene terephthalate) fibers, in the presence of benzoyl peroxide as an initiator wasaccomplished. The Modified fibers were used as a new adsorbent for removal of cetyl pyridinum bromidefrom aqueous solution. The adsorption data were best fitted by Freundlich isotherm and pseudo firstorder kinetic models, as well. Thermodynamic parameters like enthalpy, entropy and Gibbs free energyhave been determined. The results were emphasized that, the adsorption process was unspontaneousand feasible.