Sustainable Electrochemical NO Capture and Storage System Based on the Reversible Fe2+/Fe3+-EDTA Redox Reaction
- Authors
- Eum, Heesung; Cheong, Seokhyeon; Kim, Jiyun; Han, Seo-Jung; Cheong, Minserk; Lee, Hyunjoo; Lee, Hae-Seok; Lee, Dong Ki
- Issue Date
- 1월-2022
- Publisher
- MDPI
- Keywords
- NO; electrochemistry; Fe-EDTA; flow-cell; gas removal
- Citation
- CATALYSTS, v.12, no.1
- Indexed
- SCIE
SCOPUS
- Journal Title
- CATALYSTS
- Volume
- 12
- Number
- 1
- URI
- https://scholar.korea.ac.kr/handle/2021.sw.korea/138946
- DOI
- 10.3390/catal12010079
- ISSN
- 2073-4344
- Abstract
- The removal of nitric oxide (NO), which is an aggregation agent for fine dust that causes air pollution, from exhaust gas has been considered an important treatment in the context of environmental conservation. Herein, we propose a sustainable electrochemical NO removal system based on the reversible Fe2+/Fe3+-ethylenediamine tetraacetic acid (EDTA) redox reaction, which enables continuous NO capture and storage at ambient temperature without the addition of any sacrificial agents. We have designed a flow-type reaction system in which the NO absorption and emission can be separately conducted in the individual reservoirs of the catholyte and anolyte with the continuous regeneration of Fe2+-EDTA by the electrochemical reduction in Fe3+-EDTA. A continuous flow reaction using a silver cathode and glassy carbon anode showed that the concentrations of Fe2+ and Fe3+-EDTA in the electrolyte were successfully maintained at a 1:1 ratio, which demonstrates that the proposed system can be applied for continuous NO capture and storage.
- Files in This Item
- There are no files associated with this item.
- Appears in
Collections - Graduate School of Energy and Environment (KU-KIST GREEN SCHOOL) > Department of Energy and Environment > 1. Journal Articles
Items in ScholarWorks are protected by copyright, with all rights reserved, unless otherwise indicated.