Abstract

The control of anthropogenic carbon dioxide release is one of the most challenging environmental problem faced by developing countries, as the interfering of atmospheric carbon dioxide level and climate revolutionize. An rising technology is the membrane gas separation, which is more dense, energy efficient and possibly more economical than past technologies, such as solvent absorption. Amine has a greater efficiency for removal of carbon dioxide. The blending technique not only provides improved chemical and thermal stability but is also efficient enough to improve the perm-selective properties with economical viability. In this study, research will be carried out to study the gas permeability behavior of glassy Polysulfone and Polyvinyl acetate rubbery polymeric blend membranes with diethanol amine. Polymeric amine blend membranes with different blending ratios were prepared in dimethyl acetamide solvent, flat sheet membrane were developed with enhance properties. We were studied PSU/PVAc blend with DEA amine using a gas permeability application for CO<sub>2</sub> and CH<sub>4</sub> at different feed pressures.

Highlights

  • The existence of CO2 in natural gas decreasing its calorific value for incomplete combustion as well as environmental issues occur like its emission to atmosphere is increasing Global Warming and Green House Effects, need to be removed and increases the worth value

  • We evaluated the feasibility of using PSU/PVAc/DEA amine membranes for this purpose by measuring the permeance of a CO2/CH4 mixture under different operating pressures

  • Our gas permeability study of PSU/PVAc/DEA amine blended membranes were evaluated by using pure gas (CO2 and CH4) under five different feed pressures of 2, 4, 6, 8 and 10 bars, respectively

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Summary

INTRODUCTION

The existence of CO2 in natural gas decreasing its calorific value for incomplete combustion as well as environmental issues occur like its emission to atmosphere is increasing Global Warming and Green House Effects, need to be removed and increases the worth value. One of the most extensively patented polymeric materials are polysulfones (Chiao, 1988; Bikson et al, 1985; Coplan et al, 1983; Rose, 1981a, b; Quentin, 1977; Quentin, 1973) They are regarded as amongst the most chemically and thermally robust thermoplastic polymers available; and polysulfones have been extensively applied to gas separation (Chiao, 1989; Bourganel, 1977; Graefe et al, 1975; Kawakami et al, 1991). The Dankwerts’ zwitterions mechanism has recently become one of the most widely accepted mechanism for amine reaction with CO2 (Blauwhoff et al, 1984; Versteeg and Van Swaaij, 1988; Versteeg et al, 1990; Versteeg and Oyevaar, 1989; Glasscock et al, 1991; Littel et al, 1992): R1 = R2 = -CH2CH2OH R1R2NH + CO2↔R1R2NH+COO- (Zwitter ion) R1R2NH+COO- + R1R2NH↔R1R2NCOO(Carbamate) + R1R2NH2+ Overall reaction is: 2R1R2NH + CO2↔R1R2NCOO- + R1R2NH2+. Membranes Still considered new technology Losses depend upon conditions No (

METHODOLOGY
RESULTS AND DISCUSSION
CONCLUSION

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Topics from this Paper

  • Blend Membranes
  • Polymeric Blend Membranes
  • Dimethyl Acetamide Solvent
  • Gas Permeability
  • Flat Sheet Membrane
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