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Freezing-enhanced non-radical oxidation of organic pollutants by peroxymonosulfate

Cited 8 time in wos
Cited 9 time in scopus
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dc.contributor.authorLe, Nhat Thi Hong-
dc.contributor.authorJu, Jinjung-
dc.contributor.authorKim, Bomi-
dc.contributor.authorKim, Min Sik-
dc.contributor.authorLee, Changha-
dc.contributor.authorKim, Saewung-
dc.contributor.authorChoi, Wonyong-
dc.contributor.authorKim, Kitae-
dc.contributor.authorKim, Jungwon-
dc.date.accessioned2021-05-12T08:29:31Z-
dc.date.available2021-05-12T08:29:31Z-
dc.date.issued2020-05-
dc.identifier.urihttps://repository.kopri.re.kr/handle/201206/11983-
dc.description.abstractThis study presents a freezing method for accelerating the peroxymonosulfate (PMS)-mediated degradation process. The degradation of furfuryl alcohol (FFA) in the presence of PMS was markedly accelerated by freezing. The degradation efficiency of FFA was only 10.4% in aqueous solution at 25 °C, but 100% degradation was achieved in frozen solution at 20 °C after 3 h of reaction at [FFA] = 20 μM and [PMS] = 100 μM. This accelerated PMS-mediated degradation of FFA in the frozen solution is due to the concentration of both PMS and FFA in ice grain boundaries, which increases the collision frequency between PMS and FFA thereby facilitating redox transformation. The mapping images of PMS and FFA in the frozen sample obtained using confocal Raman microscopy provide clear evidence of the accumulation of PMS and FFA in the ice grain boundaries after freezing. The experimental results with sulfate radical (SO4●) scavengers, no production of hydroxyl radicals (●OH) and sulfate radicals (SO4●), and the highly pollutant-dependent degradation efficiency suggest that the PMS-mediated degradation in frozen solution primarily proceeds through the direct electron transfer from organic pollutants to PMS (non-radical mechanism) rather than the reaction of SO4● with organic pollutants (radical mechanism). The degradation efficiency of the PMS/freezing system was similar across the pH range of 310. In addition, the PMS/freezing system worked efficiently in the temperature range of 10 to 35 °C. This result implies that the PMS/freezing system can be operated without external energy in cold regions.en_US
dc.languageEnglishen_US
dc.language.isoen_USen_US
dc.subjectEngineeringen_US
dc.subject.classification기타()en_US
dc.titleFreezing-enhanced non-radical oxidation of organic pollutants by peroxymonosulfateen_US
dc.title.alternative동결법을 이용한 과황산염 활성화를 통해 독성 오염물질 분해기술 개발en_US
dc.typeArticleen_US
dc.identifier.bibliographicCitationLe, Nhat Thi Hong, et al. 2020. "Freezing-enhanced non-radical oxidation of organic pollutants by peroxymonosulfate". <em>CHEMICAL ENGINEERING JOURNAL</em>, 388(1): 124226-124235.en_US
dc.citation.titleCHEMICAL ENGINEERING JOURNALen_US
dc.citation.volume388en_US
dc.citation.number1en_US
dc.identifier.doi10.1016/j.cej.2020.124226-
dc.citation.startPage124226en_US
dc.citation.endPage124235en_US
dc.description.articleClassificationSCI-
dc.description.jcrRateJCR 2018:3.846en_US
dc.subject.keywordPeroxymonosulfateen_US
dc.subject.keywordFreeze-concentration effecten_US
dc.subject.keywordRedox chemical reactionen_US
dc.subject.keywordNon-radical mechanismen_US
dc.subject.keywordPharmaceutical pollutanten_US
dc.identifier.localId2020-0026-
dc.identifier.scopusid2-s2.0-85078846980-
dc.identifier.wosid000540929300006-
Appears in Collections  
2020-2020, Investigation of ice microstructure properties for developing low-temperature purification and environment/energy materials (20-20) / Kim, Kitae (PE20030)
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