Abstract
In the present paper, Amberlyst-15 resin was used for the removal of malathion. Various experimental parameters such as effect of pH, contact time, resin dose, initial malathion concentration and temperature were studied to find the optimum conditions for malathion removal. The removal rate of malathion by Amberlyst-15 was rapid and equilibrium was established within 30 min. Kinetic studies showed better applicability for pseudo-second-order model and equilibrium data was best fitted to Freundlich isotherm model. The thermodynamic parameters showed that the adsorption of malathion was feasible, endothermic and spontaneous. The concentration of malathion was determined using ultra-performance liquid chromatography-tandem mass spectrometry. (C) 2014 The Korean Society of Industrial and Engineering Chemistry. Published by Elsevier B.V. All rights reserved.