STUDI KARAKTERISASI POLYIMIDE MEMBRANES, POLYETHERSULFONE – POLYIMIDE COMPOSITE MEMBRANES, DAN POLYETHERSULFONE – ZEOLITE MIXED MATRIX MEMBRANES UNTUK PEMURNIAN BIOGAS

Abstract

The study characterization of three variety membranes polyimide membranes, polyethersulfone – polyimide composite membranes and polyethersulfone – zeolite mixed matrix membranes have done to known the performance of membranes in separate CO2/CH4 in biogas and also to understand the structure morphology of these membranes. In this research have done heat treatment and coating process of membranes and effect of membranes performance in separate CO2/CH4 in biogas. The result of SEM is showed that the three variety membranes are used include the asymmetric membrane because these membrane have two layer, the first layer is namely active layer (dense) and then the second layer is namely porous substructure. Membrane with heat treatment will be made the active layer more thick and porous subsrtucture more dense, whereas membrane with coating will be made the active layer more thick and the surface layer more soft. Then membrane with heat treatment and coating also will increasing the temperatur glass of polymeric membrane. The result of permeability CO2 value is showed that asymmetric polyimide membranes with heat treatment at 200 oC for 2 menit has good permeability is 0.70 GPU. Whereas for asymmetric PES – PI composite membrane, the best permeability CO2 value reached for heat treatment at 180 oC for 2 menit is 83,01 GPU and for asymmetric polyethersulfone – zeolite mixed matrix membranes the best permeability CO2 value reached for heat treatment at 200 oC for 5 menit is 486,89 GPU.