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Ali Taghvaie Nakhjiri,Amir Heydarinasab 한국공업화학회 2019 Journal of Industrial and Engineering Chemistry Vol.78 No.-
This paper deals with developing a theoretical modeling and a two dimensional (2D) computationalsimulation to evaluate the CO2 separation percentage from CO2/CH4 gaseous mixture under non-wettingmode of operation inside the membrane pores and counter-current adjustment of liquid and gasflows. Asthe novelty, the effect of ethylenediamine (EDA), 2-(1-piperazinyl)-ethylamine (PZEA) and potassiumsarcosinate (PS) liquid absorbents on the CO2 separation performance is studied and the most efficientabsorbent is introduced. The results show that PZEA can sequester 88.75% of inlet CO2 while theseparation percentage of CO2 using PS and EDA is 82.2 and 81%, respectively. In addition, themathematical model outcomes corroborate that increase in some operational factors and hollowfibermodule specifications such as liquidflow rate,fiber packing density, module length and number offibersencourages the separation efficiency of CO2 due to enhancing the residence time, contact area andconsequently mass transfer rates inside the HFMC while increment of tortuosity factor and gasflow ratenegatively deteriorates the separation percentage of CO2 which is able to be justified due to enhancementof mass transfer resistance through the pores of microporous membrane.