Fundamental properties of nitrosamines, such as their Henry's law constants, are needed to accurately predict the gas-phase partitioning and mitigate emissions of these volatile compounds from operating CO2 capture systems. In this work, the Henry's volatility coefficient of several environmentally relevant nitrosamines were experimentally obtained from water, from a concentrated amine solution and from a CO2 loaded amine solution using a static headspace solid phase microextraction and gas chromatography mass spectrometry method. The dimensionless Henry's volatility coefficients of N-nitrosodimethylamine and N-nitrosodiethylamine were found to be range of 0.001–0.1 at CO2 absorber exit temperatures from 25 to 55 °C. A linear temperature dependency of the Henry's volatility coefficient for these nitrosamines was observed. CO2 loading in the amine solvent increases the Henry's volatility coefficient of the more non-polar nitrosamine while it decreased the Henry's volatility coefficient of the more polar nitrosamine. Similar to parent amines, the polarity of the individual nitrosamines plays a key role in its Henry's volatility coefficients and gas phase partitioning from concentrated amine solutions.
|Number of pages||7|
|Journal||International Journal of Greenhouse Gas Control|
|State||Published - Jun 2018|
Bibliographical noteFunding Information:
The authors acknowledge the Carbon Management Research Group (CMRG) members including Duke Energy, Electric Power Research Institute (EPRI), and Louisville Gas & Electric (LG&E) and Kentucky Utilities (KU) for their financial support.
© 2018 Elsevier Ltd
- Amine scrubbing
- CO capture
- Henry's volatility coefficient
- Solid phase microextraction
ASJC Scopus subject areas
- Energy (all)
- Management, Monitoring, Policy and Law
- Industrial and Manufacturing Engineering