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Volume 7, Issue 6(Suppl) J Chromatogr Sep Tech
ISSN: 2157-7064 JCGST, an open access journal
Page 34
Notes:
Separation Techniques 2016
September 26-28, 2016
conferenceseries.com
Separation Techniques
September 26-28, 2016 Valencia, Spain
2nd International Conference and Expo on
Influence of coal power plant exhaust gas on the structure and performance of ceramic
nanostructured gas separation membranes
K Wilkner, J Eiberger, M Bram, M E Ivanova and W A Meulenberg
Forschungszentrum Julich, Germany
C arbon capture and storage or utilization is a key technology to decrease CO2 emissions from conventional power plants,
until cost efficient energy supply from renewable sources is possible. Membrane-based systems to capture CO2 from flue
gas streams are considered a promising alternative to conventional absorption technology. In the present work the effect of
coal power plant exhaust gas on amino-modified mesoporous ceramic membranes was investigated. Testing membranes in
direct contact with exhaust gas represents a new approach, as testing under simulated flue gas conditions has already been
undertaken. Flue gas exposure experiments were carried out at a lignite-fueled power plant and a hard-coal-fueled power
plant. Most experiments were conducted using a test rig designed to bring planar membrane samples in direct contact with
unconditioned flue gas in the exhaust gas channel. Another test rig was designed to test membrane modules with pre-treated
flue gas. The tested membranes had an asymmetric structure consisting of a macroporous α-Al2O3 support coated with a
mesoporous ɣ -Al2O3 or 8YSZ interlayer. The microporous functional top layer was made of amino-functionalized silica. The
tests revealed different degradation mechanisms such as gypsum/fly ash deposition on the membrane surface, pore blocking by
water condensation, chemical reactions and phase transformation. A detailed analysis was carried out by XRD, XPS and SEM
to evaluate their impact on the membrane in order to assess membrane stability under real conditions. The suitability of these
membranes for this application is critically discussed and an improved mode of membrane operation is proposed.
Biography
K Wilkner holds a Diploma in Physical Engineering from the University of Applied Science Aachen. Since 2011, he has been working at the Institute of Energy and
Climate Research: Materials synthesis and processing (IEK-1) in Forschungszentrum Julich. Since 2012, one of his responsibilities is to test membranes in direct
contact with flue gas of lignite and hard-coal-fueled power plants.
K Wilkner et al., J Chromatogr Sep Tech 2016, 7:6(Suppl)