Journal article
The resilience of carbonic anhydrase enzyme for membrane-based carbon capture applications
JKJ Yong, GW Stevens, F Caruso, SE Kentish
International Journal of Greenhouse Gas Control | ELSEVIER SCI LTD | Published : 2017
Abstract
A microbial carbonic anhydrase was immobilized onto the surface of hollow fiber membranes to enhance the absorption rate of carbon dioxide into an aqueous 30 wt% potassium carbonate solvent at pH 10–12. The performance of the immobilized enzyme was investigated over long time frames to determine the suitability of this approach for post-combustion carbon capture. The immobilized enzyme was able to maintain activity for up to 80 days at 25 °C even when initially exposed to pH 12, however lost activity rapidly when exposed to such high pH at 50 °C and subsequently was completely deactivated within 4 days. The effect of sulfur dioxide and nitric oxide that are present in post-combustion flue ga..
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Grants
Awarded by Australian Research Council
Funding Acknowledgements
The work was supported by the Centre of Excellence in Convergent Bio-Nano Science and Technology, Australian Research Council (Project number CE140100036) and the Particulate Fluids Processing Centre (PFPC), a Special Research Centre of the Australian Research Council. The specialist gas infrastructure was funded by the Australian Research Council (LE120100141) and by the Australian Government Education Investment fund and this support is also gratefully acknowledged. Novozymes A/S kindly supplied the CA enzyme, and much gratitude is given to Dr. S. Salmon and Dr. A. J. House of Novozymes, who provided insights and guidance for this report. These sources of support are gratefully acknowledged.