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DC Field | Value | Language |
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dc.citation.endPage | 264 | - |
dc.citation.startPage | 258 | - |
dc.citation.title | CHEMICAL ENGINEERING JOURNAL | - |
dc.citation.volume | 245 | - |
dc.contributor.author | Lee, Hye-Jin | - |
dc.contributor.author | Lee, Hongshin | - |
dc.contributor.author | Lee, Changha | - |
dc.date.accessioned | 2023-12-22T02:39:17Z | - |
dc.date.available | 2023-12-22T02:39:17Z | - |
dc.date.created | 2014-04-22 | - |
dc.date.issued | 2014-06 | - |
dc.description.abstract | The oxidative degradation of two pharmaceutical compounds (diclofenac and carbamazepine, denoted as DCF and CBZ) by the Cu(II)-catalyzed Fenton (Cu(II)/H2O2) and the photo-Fenton (UV/Cu(II)/H2O2) systems was examined, with a focus on the parameters that affected the oxidant production, such as the solution pH, the Cu(II) concentration, and the radical scavengers. The degradation of DCF and CBZ in the Cu(II)/H2O2 and UV/Cu(II)/H2O2 systems followed the pseudo-first-order kinetics, which exhibited increasing rate constants with the increasing concentration of Cu(II). In the Cu(II)/H2O2 system, the optimal degradation of the target contaminants was observed at approximately pH 8, which is attributed to the combined effects of two pH-dependent factors: (1) the accelerated Cu(II) reduction by H2O2 with increasing pH and (2) the shift of the main oxidant from the hydroxyl radical (OH) to the cupryl ion (Cu[III]) at high pH values. The complete prevention of the degradation of DCF and CBZ in the presence of excess tert-butanol indicates that OH is dominantly responsible for the contaminant degradation. The UV-A irradiation significantly enhanced the degradation of the target contaminants over the entire pH range studied (pH 3-10) and slightly shifted the optimal pH conditions to lower values (pH 6-7). The enhanced degradation of the contaminants by the UV/Cu(II)/H2O2 system appears to result from the accelerated Cu(II) reduction by the hydroperoxyl/superoxide radicals (HO2/O2-), which are produced via the photolysis of H2O2. | - |
dc.identifier.bibliographicCitation | CHEMICAL ENGINEERING JOURNAL, v.245, pp.258 - 264 | - |
dc.identifier.doi | 10.1016/j.cej.2014.02.037 | - |
dc.identifier.issn | 1385-8947 | - |
dc.identifier.scopusid | 2-s2.0-84897696542 | - |
dc.identifier.uri | https://scholarworks.unist.ac.kr/handle/201301/4402 | - |
dc.identifier.url | http://www.scopus.com/inward/record.url?partnerID=HzOxMe3b&scp=84897696542 | - |
dc.identifier.wosid | 000335275200031 | - |
dc.language | 영어 | - |
dc.publisher | ELSEVIER SCIENCE SA | - |
dc.title | Degradation of diclofenac and carbamazepine by the copper(II)-catalyzed dark and photo-assisted Fenton-like systems | - |
dc.type | Article | - |
dc.description.isOpenAccess | FALSE | - |
dc.relation.journalWebOfScienceCategory | Engineering, Environmental; Engineering, Chemical | - |
dc.relation.journalResearchArea | Engineering | - |
dc.description.journalRegisteredClass | scie | - |
dc.description.journalRegisteredClass | scopus | - |
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