A Water-Swollen Thin Film Composite Membrane for Effective Upgrading of Raw Biogass by Methane

0375305 - ÚCHP 2013 RIV GB eng J - Journal Article
Kárászová, Magda - Vejražka, Jiří - Veselý, Václav - Friess, K. - Randová, A. - Hejtmánek, Vladimír - Brabec, Libor - Izák, Pavel
A Water-Swollen Thin Film Composite Membrane for Effective Upgrading of Raw Biogass by Methane.
Separation and Purification Technology. Roč. 89, MAR 22 (2012), s. 212-216. ISSN 1383-5866. E-ISSN 1873-3794
R&D Projects: GA ČR GAP106/10/1194; GA MŠMT(CZ) 7C11009
Institutional research plan: CEZ:AV0Z40720504; CEZ:AV0Z40400503
Keywords : biogas * membranes * CO2 removal
Subject RIV: CI - Industrial Chemistry, Chemical Engineering
Impact factor: 2.894, year: 2012

Recently, purification of raw biogas has attracted a great attention of research community. Possibility of effective waste utilization for cheap biofuel production has enormous ecological and economical benefits. In this work a water-swollen thin film composite membrane for effective separation of carbon dioxide from methane in biogas is presented. The hydrophilic reverse osmosis membrane creates under water vapor condensing conditions a thin selective separation layer in which dissolved feed gaseous mixture, except methane. Water vapor saturated biogas was brought into a contact with cooled membrane in order to keep the selective skin layer. Sweeping gas N2 is used to keep constant driving force and to control partial water evaporation from the membrane. Under the described experimental conditions was obtained retentate stream containing 95 vol.% of methane.
Permanent Link: http://hdl.handle.net/11104/0207996