Preparation and Characterization of Mixed Matrix Membrane based on Polysulfone (PSF) and Lanthanum Orthoferrite (LaFeO_3) for Gas Separation

The aim of this study is to investigate the effects of polysulfone (psf) and lanthanum orthoferrite (lafeo_3) incorporated mixed matrix membrane (mmm) on gas permeation and selectivity properties. psf/lafeo_3 mmms were prepared with various weights loading of lafeo_3. the membranes obtained were characterized using scanning electron microscope (sem), thermal gravimetric analysis (tga) and fourier-transform infra-red (ft-ir). the gas transport properties of mmm were measured using single gas permeation set up (co_2, ch_4, o_2 and n_2) at ambient temperature, and feed pressure of 2, 4 and 6 bar. the permeation test showed that the mixed matrix membrane exhibited high permeability. with increasing lafeo_3 weight loading to 1.0%, the highest permeability values were 47.74 gpu for co_2, 29.85 gpu for ch4, 57.56 gpu for o_2, and 40.66 gpu for n_2. the results also showed that by incorporating 1.0wt% of lafeo_3 into psf matrix, the highest co_2/ch4 and o_2/n_2 selectivity of 1.60 and 1.42 respectively were obtained. overall, all the resultants mmm showed higher permeability and selectivity compared to pure psf membrane.