Decomposition of N-nitrosamines formed in CO2 capture systems through electrochemically-mediated reduction on carbon xerogel electrode

Jesse G. Thompson, Xin Gao, Shino Toma, Keemia Abad, Saloni Bhatnagar, James Landon, Kunlei Liu

Research output: Contribution to journalArticlepeer-review

5 Scopus citations

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 languageEnglish
Pages (from-to)83-90
Number of pages8
JournalInternational Journal of Greenhouse Gas Control
Volume83
DOIs
StatePublished - 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
  • Energy (all)
  • Management, Monitoring, Policy and Law
  • Industrial and Manufacturing Engineering

Fingerprint

Dive into the research topics of 'Decomposition of N-nitrosamines formed in CO2 capture systems through electrochemically-mediated reduction on carbon xerogel electrode'. Together they form a unique fingerprint.

Cite this