Abstract
In this research, a triethylene glycol (TEG)/nano-zeolite Na-Y liquid membrane was developed in order to investigate the effect of zeolite nanoparticles on separation performance of a liquid membrane. To do this, a high yield nano-zeolite Na-Y was synthesized using mid-synthesis addition method. The synthesized samples were characterized by XRD, FT-IR, and SEM (EDX) instrumental techniques. A supported liquid membrane was prepared by impregnating a porous hydrophilic PVDF support with TEG and nano-zeolite Na-Y. The permeation tests of single gas components of O 2, N 2 and CO 2 were carried out at pressure differences of 0.8 and 1.8 bar. The permeances of the single gases were found to be: CO 2 > N 2 > O 2. Our results showed that higher loading of nano-zeolite Na-Y in TEG and higher pressure differences enhanced the permeation of CO 2 in comparison with N 2 and O 2. Also, these two factors improved the selectivity of CO 2/O 2 and CO 2/N 2 separation, but did not change N 2/O 2 separation.
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