Economics at your fingertips  

Carbonic anhydrase promoted absorption of CO 2 into potassium carbonate solutions

Hendy Thee, Kathryn H. Smith, Gabriel da Silva, Sandra E. Kentish and Geoffrey W. Stevens

Greenhouse Gases: Science and Technology, 2015, vol. 5, issue 1, 108-114

Abstract: The effect of adding relatively small quantities of Novozymes NS81239 (NCA) carbonic anhydrase enzyme on the absorption of CO 2 into a 30 wt% potassium carbonate solution has been investigated. Results demonstrated that at 40°C the addition of 2 μM NCA enhances the pseudo‐first‐order rate coefficient and thus the overall absorption process of CO 2 into potassium carbonate solvents by around 30%. As the enzyme concentration is increased in the range of about 0 to 2 μM the enhancement increases according to a first order relationship, although further increasing the NCA concentration to 9 μM presented no greater catalytic effect than that from 2 μM. The rate coefficient for NCA catalyzed CO 2 hydration measured in 30 wt% K 2 CO 3 solution at 40°C in a wetted wall column is similar to that measured in dilute, neutral pH media at room temperature using stopped flow spectrophotometry. This work also demonstrates that, at a constant enzyme concentration, the overall absorption of CO 2 into carbonate solvents increases with temperature from 40°C to 60°C, whereas above this range an increase in temperature proves to be counter‐productive.

Date: 2015
References: Add references at CitEc
Citations: View citations in EconPapers (1) Track citations by RSS feed

Downloads: (external link)

Related works:
This item may be available elsewhere in EconPapers: Search for items with the same title.

Export reference: BibTeX RIS (EndNote, ProCite, RefMan) HTML/Text

Persistent link:

Access Statistics for this article

More articles in Greenhouse Gases: Science and Technology from Blackwell Publishing
Bibliographic data for series maintained by Wiley Content Delivery ().

Page updated 2019-03-19
Handle: RePEc:wly:greenh:v:5:y:2015:i:1:p:108-114