Katyon Değişim Reçinesi Kullanarak Sulu Çözeltilerden Amonyum Giderimi

Abstract

Ammonium is one of the main factors responsible for eutrophication of water bodies. Purolite SSTC60 ion exchange resin was used to investigate its potential use on ammonium removal efficiency. The effects of important parameters affecting ion exchange such as ion exchange resin dosage, initial solution pH, temperature, mixing speed and initial ammonium concentration on ammonium removal were investigated. The highest ammonium removal was achieved at pH 7. It was determined that ammonium removal rates increased with resin dosage, mixing speed and temperature increase. It has been determined that temperatures higher than 20°C and mixing speed do not have a significant effect on ammonium removal efficiencies at equilibrium. It was observed that removal efficiencies decreased with increasing initial ammonium concentrations. Pseudo-first order and pseudo-second order kinetic equations were analyzed using nonlinear method to determine the most appropriate kinetic model for ammonium ion removal and found to be compatible with the pseudo-first order kinetic model. Finally, the evaluation of experimental data using nonlinear forms of Langmuir and Freundlich isotherm models determined that the adsorption data fit the Freundlich isotherm model rather than the Langmiur isotherm model.