کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
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634882 | 1456077 | 2012 | 7 صفحه PDF | دانلود رایگان |

The performance of zeolite and low molecular weight additive incorporated polyethersulfone (PES) membranes on the separation of CO2/CH4 mixtures at 35 °C was investigated. Four types of membranes, pure PES, PES/ 2-hydroxy 5-methyl aniline (HMA), PES/SAPO-34 and PES/SAPO-34/HMA, were prepared by solvent evaporation method. The CO2 concentration in the feed was varied between 5 and 70% by volume. PES/SAPO-34 membranes had a total permeability coefficient of 3 Barrer for an equimolar mixture, which was the highest permeability among all membranes. The highest separation factor, which was approximately 40 for CO2 over CH4, was obtained from PES/SAPO-34/HMA(4%) membrane. The addition of HMA considerably influenced the separation performance of PES/SAPO-34 membrane. The permeabilities increased with increasing concentration of CO2 in the feed whereas the separation factors of membranes were independent of feed composition, which introduces a major advantage from industrial point of view since the membranes can be used with the same performance in the separation of CO2/CH4 mixtures regardless of mixture composition.
► SAPO-34, PES and 2-hydroxy 5-methyl aniline mixed matrix membranes were prepared.
► Membranes were used to separate CO2/CH4 mixtures with different feed compositions.
► HMA considerably influenced the separation performance of PES/SAPO-34 membrane.
► CO2 and CH4 adsorption capacities of ternary membranes were measured.
Journal: Journal of Membrane Science - Volumes 417–418, 1 November 2012, Pages 45–51