In this study, the removal of mercaptan from condensate from Ilam Refinery was investigated by using adsorption on the ion-exchanged x-zeolites in a batch system. Batch experiments were performed to evaluate the influence of parameters like adsorbent dosage, contact time, concentration of the adsorbate and temperature. It was observed that adsorption of mercaptan followed pseudo second order kinetics in both the cases. Adsorption data fitted well with the Langmuir and Freundlich models. However, Langmuir isotherm displayed a better fitting. The results revealed that the mercaptan is considerably adsorbed on ion-exchanged zeolites and it could be an economical method for the removal of mercaptan from condensate.
