Edinburgh Napier University

  The present work is focusing on the utilization of previously fabricated membrane (synthesized in 3 days as reported in our previous work) to study the effect of hydrocarbons and its durability at the previously optimized conditions. Subsequently, gas permeation study was conducted on ceramic membranes in CO2 separation from small gas molecules present in biogas and it was found that the permeance of CO2, N2, and CH4 decreased in the order of 15 INTRODUCTION Over the last few decades, much research has been done on the CO2 separation especially in biogas upgrading to biomethane [1]. The presence of CO2 in the biogas reduces the calorific value of the raw gas methane recovery during the combustion and other downstream processes [2]. Similarly, the presence of CO2 decreases the heating value of natural gas and causes equipment corrosion in the existence of water [3]. Meanwhile, membrane separation technology has received much attention in CO2 separation mainly due to its advantages compared to the conventional separation technologies [4]. Inorganic membranes are generally favored in the CO2 separation among the membrane materials over polymeric membranes due to their specific unique characteristics, including well-specified pores, the molecular filtering property, ability to sustain logetivity and wide pore size availability [5, 6].