Document Type : Research Paper
Faculty of Engineering and Natural Sciences, Tampere University, Tampere, Finland
Chemical Engineering Department, Engineering Faculty, Ferdowsi University of Mashhad, Mashhad, Iran
Due to environmental issues, the separation of volatile organic compounds (VOCs) from water is of great importance. Hence, in the current study, polydimethylsiloxane (PDMS) pervaporation membrane was prepared to remove the 2-ethyltoluene from water and characterized using analysis methods such as scanning electron microscopy (SEM). The effect of feed concentration, membrane thickness, and feed temperature on the flux of permeation and the separation factor was investigated via pervaporation experiments. As the concentration of 2-ethyltoluene augmented from 17.83 to 41.36 ppm, the 2-ethyltoluene permeation flux was enhanced by approximately 413%, whereas the water permeation flux and the separation factor were raised by about 9% and 104%, respectively. Moreover, the swelling degree and pervaporation separation index (PSI) increased by almost 191% and 139%, respectively. An augmentation in water flux, 2-ethyltoluene flux, and PSI, by about 33%, 26%, and 27 %, respectively, occurred as a result of increasing the feed temperature from 25 to 55 °C. However, the separation factor was decreased by almost 4%.