Abstract
N-nitrosamines, as a class of compounds, have been reported to be mutagenic, cytotoxic, genotoxic and carcinogenic. N-nitrosamine formation and emission are a major concern for amine-based CO2 capture systems. A process using a stationary carbon electrode inside an electrochemical cell was developed and tested in this study to adsorb and decompose two N-nitrosamines, N-nitrosopyrrolidine and N-nitrosodiethylamine, from an aqueous amine solution. The carbon xerogel electrode material has a high N-nitrosamine adsorption capacity and can initiate an electrochemically-mediated reduction of N-nitrosamines to a secondary amine. A greater than 80% reduction of N-nitrosodiethylamine and 90% of N-nitrosopyrrolidine was observed from a simulated amine-based waterwash solution using an applied current up to 300 mA. N-nitrosamine decomposition was effective in solutions with relatively high amine or salt concentrations.
Original language | English |
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Pages (from-to) | 83-90 |
Number of pages | 8 |
Journal | International Journal of Greenhouse Gas Control |
Volume | 83 |
DOIs | |
State | Published - Apr 2019 |
Bibliographical note
Publisher Copyright:© 2019 Elsevier Ltd
Keywords
- Amine CCS waterwash
- CO capture
- Carbon xerogel electrode
- Electrochemical reduction
- N-nitrosamine
ASJC Scopus subject areas
- Pollution
- General Energy
- Management, Monitoring, Policy and Law
- Industrial and Manufacturing Engineering