The competitive adsorption of phenol and p-chlorophenol on polystyrene-based resin NKA has been studied using a bottle point isotherm procedure. The mathematical models of Ideal Adsorbed Solution(IAS) and Langmuir Competitive Adsorption(LCA) have been tested for predicting the competitive adsorption behavior of phenol and p-chlorophenol in aqueous solution. The results obtained appeared satisfactory.
