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Kinetics and degradation mechanism of tris (1-chloro-2-propyl) phosphate in the UV/H2O2 reaction
DC Field | Value | Language |
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dc.contributor.author | Son, Yeongjo | - |
dc.contributor.author | Lee, Young-Min | - |
dc.contributor.author | Zoh, Kyung-Duk | - |
dc.date.accessioned | 2023-07-10T07:06:51Z | - |
dc.date.available | 2023-07-10T07:06:51Z | - |
dc.date.created | 2020-10-27 | - |
dc.date.created | 2020-10-27 | - |
dc.date.issued | 2020-12 | - |
dc.identifier.citation | Chemosphere, Vol.260, p. 127461 | - |
dc.identifier.issn | 0045-6535 | - |
dc.identifier.uri | https://hdl.handle.net/10371/194968 | - |
dc.description.abstract | Tris (1-chloro-2-propyl) phosphate (TCPP) is a chlorinated organic phosphate used in various applications as a flame retardant and plasticizer. TCPP is a known suspected carcinogen and is not effectively removed by traditional water treatments such as biological, chlorination, and UV irradiation. In this study, the UV/H2O2 reaction was employed to degrade TCPP in water. TCPP was effectively degraded in the UV/H2O2 reaction by pseudoflrst-order kinetics. The second order rate constant of the reaction between the TCPP and OH radical was determined to be 4.35 (+/- 0.13) x 10(8) M-1 s(-1) using the competition kinetics with nitrobenzene as a reference compound. The degradation of TCPP was affected by the amount of H2O2, pH, and coexisting water components such as HCO3-, NO3-, and humic acid. Approximately 64.2% of total organic carbon (TOC) in TCPP was mineralized in 12 h during the UV/H(2)O(2 )reaction, chloride (Cl-) and phosphate (PO43-) ions were identified as ionic byproducts with the recoveries of 96% chlorine (Cl) and 50% phosphorus (P). Five organic transformation products (TPs) of TCPP were also identified using LC-qTOF/MS. Considering the identified TPs, the main degradation pathway of TCPP during the UV/H2O2 reaction was found to be OH-radical-induced hydroxylation. Finally, a 70% decrease in bioluminescence inhibition in Vibrio fischeri was observed during the UV/H2O2 reaction, and the time-toxicity profile was similar to the time-peak area profile of TPs. The result of this study implies that TCPP can be efficiently removed with significant mineralization and toxicity reduction by the UV/H2O2 process. (C) 2020 Elsevier Ltd. All rights reserved. | - |
dc.language | 영어 | - |
dc.publisher | Pergamon Press Ltd. | - |
dc.title | Kinetics and degradation mechanism of tris (1-chloro-2-propyl) phosphate in the UV/H2O2 reaction | - |
dc.type | Article | - |
dc.identifier.doi | 10.1016/j.chemosphere.2020.127461 | - |
dc.citation.journaltitle | Chemosphere | - |
dc.identifier.wosid | 000575197000007 | - |
dc.identifier.scopusid | 2-s2.0-85087780657 | - |
dc.citation.startpage | 127461 | - |
dc.citation.volume | 260 | - |
dc.description.isOpenAccess | N | - |
dc.contributor.affiliatedAuthor | Lee, Young-Min | - |
dc.contributor.affiliatedAuthor | Zoh, Kyung-Duk | - |
dc.type.docType | Article | - |
dc.description.journalClass | 1 | - |
dc.subject.keywordPlus | FLAME RETARDANTS OPFRS | - |
dc.subject.keywordPlus | ORGANOPHOSPHATE ESTERS | - |
dc.subject.keywordPlus | WASTE-WATER | - |
dc.subject.keywordPlus | TRIS(2-CHLOROETHYL) PHOSPHATE | - |
dc.subject.keywordPlus | OXIDATION-PRODUCTS | - |
dc.subject.keywordPlus | HYDROXYL RADICALS | - |
dc.subject.keywordPlus | AQUEOUS-SOLUTION | - |
dc.subject.keywordPlus | RISK-ASSESSMENT | - |
dc.subject.keywordPlus | TREATMENT-PLANT | - |
dc.subject.keywordPlus | UV | - |
dc.subject.keywordAuthor | Organophosphate esters | - |
dc.subject.keywordAuthor | UV/H2O2 | - |
dc.subject.keywordAuthor | Transformation products | - |
dc.subject.keywordAuthor | Toxicity | - |
dc.subject.keywordAuthor | OH radical | - |
dc.subject.keywordAuthor | Mineralization | - |
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