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Permeation of single gases through TEG liquid membranes modified by Na-Y nano-zeolite particles

Asadollahi, M ; Sharif University of Technology | 2010

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  1. Type of Document: Article
  2. DOI: 10.1016/j.seppur.2010.09.029
  3. Publisher: 2010
  4. Abstract:
  5. 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 O2, N2 and CO2 were carried out at pressure differences of 0.8 and 1.8 bar. The permeances of the single gases were found to be: CO2 > N 2 > O2. Our results showed that higher loading of nano-zeolite Na-Y in TEG and higher pressure differences enhanced the permeation of CO2 in comparison with N2 and O2. Also, these two factors improved the selectivity of CO2/O2 and CO2/N2 separation, but did not change N2/O 2 separation
  6. Keywords:
  7. Gas separation ; Liquid membrane ; Addition method ; Gas component ; Gas separations ; High yield ; Instrumental techniques ; Na-Y nano-zeolite ; Permeation test ; Pressure differences ; SEM ; Separation performance ; Supported liquid membrane ; Triethylene glycol ; XRD ; Zeolite nanoparticle ; Zeolite particles ; Gases ; Glycols ; Liquid membranes ; Liquids ; Permeation ; Sodium ; Gas permeable membranes
  8. Source: Separation and Purification Technology ; Volume 76, Issue 2 , 2010 , Pages 120-125 ; 13835866 (ISSN)
  9. URL: http://www.sciencedirect.com/science/article/pii/S1383586610003862