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DC Field | Value | Language |
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dc.citation.endPage | 285 | - |
dc.citation.startPage | 277 | - |
dc.citation.title | WATER RESEARCH | - |
dc.citation.volume | 114 | - |
dc.contributor.author | Kim, Min Sik | - |
dc.contributor.author | Kim, Hak-Hyeon | - |
dc.contributor.author | Lee, Ki-Myeong | - |
dc.contributor.author | Lee, Hye-Jin | - |
dc.contributor.author | Lee, Changha | - |
dc.date.accessioned | 2023-12-21T22:16:38Z | - |
dc.date.available | 2023-12-21T22:16:38Z | - |
dc.date.created | 2017-03-10 | - |
dc.date.issued | 2017-05 | - |
dc.description.abstract | Ferrous-tetrapolyphosphate complexes (Fe(II)-TPP) activate oxygen and hydrogen peroxide to produce reactive oxidants capable of degrading organic compounds. In this study, the Fe(II)-TPP/O2 and Fe(II)-TPP/H2O2 systems were assessed for oxidative degradation of microcystin-LR (MC-LR), the most toxic and abundant cyanotoxin. The degradation of MC-LR was optimized for both the Fe(II)-TPP/O2 and Fe(II)-TPP/H2O2 systems when the molar ratio of TPP:Fe(II) was approximately 5.7-5.9. The optimal H2O2 dose for MC-LR degradation by Fe(II)-TPP/H2O2 was found to be 320 μM. The Fe(II)-TPP/O2 and Fe(II)-TPP/H2O2 systems exhibited two pH optima for MC-LR degradation i.e., ∼7 and 9, which can be attributed to pH-dependent reactivity changes of the resultant oxidants (most likely the ferryl-tetrapolyphostate complex, Fe(IV)-TPP). Liquid chromatography-mass spectrometry identified 22 compounds produced by the oxidation of MC-LR, including four primary oxidation products. One of the primary products, in particular, was formed via oxidative cleavage of the alkene group in the Mdha moiety of MC-LR. This compound and its secondary oxidation products are rarely found when MC-LR is transformed by other oxidants and is believed to reflect a unique reaction pathway involving Fe(IV)-TPP. Meanwhile, the hepatotoxicity of the reaction solution decreased concurrently with a decrease on MC-LR concentration. | - |
dc.identifier.bibliographicCitation | WATER RESEARCH, v.114, pp.277 - 285 | - |
dc.identifier.doi | 10.1016/j.watres.2017.02.038 | - |
dc.identifier.issn | 0043-1354 | - |
dc.identifier.scopusid | 2-s2.0-85013953249 | - |
dc.identifier.uri | https://scholarworks.unist.ac.kr/handle/201301/21593 | - |
dc.identifier.url | http://www.sciencedirect.com/science/article/pii/S0043135417301306 | - |
dc.identifier.wosid | 000397695800027 | - |
dc.language | 영어 | - |
dc.publisher | PERGAMON-ELSEVIER SCIENCE LTD | - |
dc.title | Oxidation of microcystin-LR by ferrous-tetrapolyphosphate in the presence of oxygen and hydrogen peroxide | - |
dc.type | Article | - |
dc.description.isOpenAccess | FALSE | - |
dc.relation.journalWebOfScienceCategory | Engineering, Environmental; Environmental Sciences; Water Resources | - |
dc.relation.journalResearchArea | Engineering; Environmental Sciences & Ecology; Water Resources | - |
dc.description.journalRegisteredClass | scie | - |
dc.description.journalRegisteredClass | scopus | - |
dc.subject.keywordAuthor | Microcystin-LR | - |
dc.subject.keywordAuthor | Oxidation | - |
dc.subject.keywordAuthor | Tetrapolyphosphate | - |
dc.subject.keywordAuthor | Fenton reaction | - |
dc.subject.keywordAuthor | Ferryl ion | - |
dc.subject.keywordAuthor | Oxidation product | - |
dc.subject.keywordPlus | FENTON PROCESS KINETICS | - |
dc.subject.keywordPlus | ZERO-VALENT IRON | - |
dc.subject.keywordPlus | BY-PRODUCTS | - |
dc.subject.keywordPlus | PHOTOCATALYTIC DEGRADATION | - |
dc.subject.keywordPlus | SULFATE RADICALS | - |
dc.subject.keywordPlus | WATER | - |
dc.subject.keywordPlus | ACTIVATION | - |
dc.subject.keywordPlus | PATHWAYS | - |
dc.subject.keywordPlus | TOXICITY | - |
dc.subject.keywordPlus | SYSTEM | - |
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