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DC Field | Value | Language |
---|---|---|
dc.citation.startPage | 141809 | - |
dc.citation.title | CHEMOSPHERE | - |
dc.citation.volume | 355 | - |
dc.contributor.author | Lee, Gwangtaek | - |
dc.contributor.author | Lee, Yeawan | - |
dc.contributor.author | Doh, Sunghoon | - |
dc.contributor.author | Han, Bangwoo | - |
dc.contributor.author | Kim, Yongjin | - |
dc.contributor.author | Kim, Kwiyong | - |
dc.contributor.author | Kim, Hak-Joon | - |
dc.date.accessioned | 2024-06-11T10:05:08Z | - |
dc.date.available | 2024-06-11T10:05:08Z | - |
dc.date.created | 2024-06-11 | - |
dc.date.issued | 2024-05 | - |
dc.description.abstract | This study presents a novel approach that integrates ozone-driven chemical oxidation to convert NO into soluble NO2, followed by the simultaneous absorption of NO2 and SO2 into a CaCO3-based slurry using the redox catalyst potassium iodide (KI). Using cyclic voltammetry, we demonstrate the redox properties of the I2/2I− couple, which facilitates NO2 reduction into soluble NO2− and catalyst regeneration through sulfite (SO32−)-driven reduction, thus establishing a closed catalytic cycle within the components of flue gas. In lab-scale wet-scrubbing tests, we explore the effect of various operational parameters (i.e., KI concentration, pH, and SO2 concentration), with a 15 h stability test demonstrating >60% NOx and >99% SO2 removal efficiency when the pH is controlled between 7.5 and 8.5. A successful pilot-scale implementation conducted at an inlet flow rate of 1000 m3 h−1 further confirmed the reproducibility of the proposed redox-catalytic cycle. Our study offers a cost-effective, sustainable, and scalable solution for effectively mitigating NOx and SO2 emissions at low temperatures. © 2024 Elsevier Ltd | - |
dc.identifier.bibliographicCitation | CHEMOSPHERE, v.355, pp.141809 | - |
dc.identifier.doi | 10.1016/j.chemosphere.2024.141809 | - |
dc.identifier.issn | 0045-6535 | - |
dc.identifier.scopusid | 2-s2.0-85189532641 | - |
dc.identifier.uri | https://scholarworks.unist.ac.kr/handle/201301/82945 | - |
dc.language | 영어 | - |
dc.publisher | Elsevier Ltd | - |
dc.title | Lab- and pilot-scale wet scrubber study on the redox-mediated simultaneous removal of NOx and SO2 using a CaCO3-based slurry with KI as a redox catalyst | - |
dc.type | Article | - |
dc.description.isOpenAccess | FALSE | - |
dc.type.docType | Article | - |
dc.description.journalRegisteredClass | scie | - |
dc.description.journalRegisteredClass | scopus | - |
dc.subject.keywordAuthor | Nitrogen oxides | - |
dc.subject.keywordAuthor | Ozone | - |
dc.subject.keywordAuthor | Redox catalyst | - |
dc.subject.keywordAuthor | Sulfur dioxide | - |
dc.subject.keywordAuthor | Wet scrubbing | - |
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