TITLE:
Improved Carbon Dioxide Capture Using Nanostructured Ceramic Membranes
AUTHORS:
Ngozi Claribelle Nwogu, Edward Gobina, Mohammed Nasir Kajama
KEYWORDS:
Ceramic Membrane; Carbon Dioxide Capture; Permeability; Selectivity; Gas Transport Mechanisms
JOURNAL NAME:
Low Carbon Economy,
Vol.4 No.3,
September
18,
2013
ABSTRACT: A nanoporous-structured tubular hybrid
inorganic membrane capable of stripping carbon dioxide from flue gas stream was
designed and tested at laboratory scale to improve compliance with various environmental regulations to
cushion the effect of global warming. Single gas separation experiments using
silica modified ceramic membrane were carried out to investigate individual gas permeation behaviors at
different pressures and membrane efficiency after a dip coating method. Four
gases: Nitrogen (N2),
Carbon dioxide (CO2), Oxygen (O2) and Methane (CH4)
were used. Plots of flow rate versus pressure were generated. Results show that
the gas flow rate increases with pressure drop. However at above a pressure of
4 bars, the flow
rate of CO2 was much higher than the other gases, indicating
dominance of a more selective absorptive type transport mechanism.