Journal article
Effect of amine degradation products on the membrane gas absorption process
JA Franco, D deMontigny, SE Kentish, JM Perera, GW Stevens
Chemical Engineering Science | Published : 2009
Abstract
The effect of the presence of monoethanolamine (MEA) degradation products on membrane hollow fibers was investigated using untreated polypropylene (PP) as a model material. Common amine oxidative degradation products were added to MEA to simulate a degraded solution. The effect of these degradation products on the membrane gas absorption process using PP hollow fiber membrane was quantified. When PP membrane which has been exposed to amine degradation products is used in a membrane gas absorption contactor, the mass transfer rate of CO2 is reduced relative to the use of unexposed PP. It was found that the presence of oxalic acid reduced the mass transfer rate of CO2 in MEA most significantly..
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Funding Acknowledgements
The authors would like to thank the Cooperative Research Centre for Greenhouse Gas Technologies (CO2CRC), Particulate Fluids Processing Centre (PFPC) and Australian Research Council (ARC) for financial assistance. Also, the receipt of a Melbourne University Postgraduate Overseas Research Scholarship (PORES) and help from Harald Berwald and the workshop at the University of Regina allowed absorption experiments to be conducted at the International Test Centre for CO<INF>2</INF> Capture, Canada. The authors would also like to acknowledge Paul Pigram and Penelope Hale for assistance provided with XPS analysis.