Separation of Oxygen from Gas Mixture of Carbon Dioxide and Oxygen with Cyclohexanol and Triethylene Glycol Liquid Membrane in the Presence of Metal Oxide Nanoparticles

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Sadeghian, Parastoo | 2014

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Type of Document: M.Sc. Thesis
Language: Farsi
Document No: 46359 (06)
University: Sharif University of Technology
Department: Chemical and Petroleum Engineering
Advisor(s): Bastani, Daruoosh
Abstract:
In this research, the effect of feed flow concentration on the separation of gas mixture of carbon dioxide and oxygen was investigated by using supported liquid membrane in the presence of nano particles. In order to achieve this purpose, supported liquid membranes were prepared by impregnating a porous hydrophilic PVDF support with TEG, cyclohexanol, TEG/Fe3O4 nano particles and cyclohexanol/ Fe3O4 nano particles. Permeability and selectivity of mixed gases CO2 and O2 were examined at five different CO2 concentrations in feed flow, constant feed flow rate and constant total pressure difference.
In all tests, the permeance of carbon dioxide through cyclohexanol and TEG membranes was higher than oxygen. The results revealed that the permeability of both gases increased as the CO2 concentration rose in TEG and cyclohexanol membranes but CO2/O2 selectivity showed small enhancement. The permeability of CO2 and CO2/O2 selectivity reduced as CO2 concentration in feed flow increased in the presence of Fe3O4 nano particles and O2 permeability showed small increases
Keywords:
Liquid Membrane ; Iron Oxide Nanoparticles ; Gases Separation ; Carbon Dioxide Separation ; Triethylene Glycol

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