Changes in levels of N-nitrosamine formed from amine-containing compounds during chloramination via photocatalytic pretreatment with immobilized TiO2: Effect of source water and pH
DC Field | Value | Language |
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dc.contributor.author | Seid, Mingizem Gashaw | - |
dc.contributor.author | Byun, Jeehye | - |
dc.contributor.author | Kim, Wooyul | - |
dc.contributor.author | Cho, Kangwoo | - |
dc.contributor.author | Hong, Seok Won | - |
dc.date.accessioned | 2023-11-08T10:46:03Z | - |
dc.date.available | 2023-11-08T10:46:03Z | - |
dc.date.issued | 2022-02 | - |
dc.identifier.issn | 0304-3894 | - |
dc.identifier.issn | 1873-3336 | - |
dc.identifier.uri | https://scholarworks.sookmyung.ac.kr/handle/2020.sw.sookmyung/152928 | - |
dc.description.abstract | We investigated the effectiveness of photocatalytic pretreatment (PCP) of precursors in minimizing the formation potentials (FPs) of carcinogenic nitrosamines, including N-nitrosodimethylamine (NDMA), N-nitrosodiethylamine (NDEA), and N-nitrosodiethanolamine (NDELA), during water chloramination. A steel mesh substrate with immobilized TiO2 was highly efficient at mitigating nitrosamine formation and removing targeted precursors such as ranitidine, nizatidine, trimebutine, triethanolamine, and metoclopramide. Compared to UVC/H2O2, PCP under UVA irradiation (intensity of 0.67 mW cm(-2)) was more effective for reducing nitrosamine-FPs during post-chloramination. However, the PCP efficacies varied with the water source, pretreatment pH, and irradiation time. For example, PCP of eutrophic water increased the NDMA-FPs, but produced notable reductions (up to 99%) for NDELA-and NDEA-FPs. Shorter irradiation times, up to 15 min, increased the NDELA-FP in triethanolamine, and the NDMA-FP in nizatidine and trimebutine. However, the nitrosamine-FP decreased by > 50% after PCP at a pH > 5.6, following irradiation for 120 min. Oxygen addition, N-de(m)ethylation, and N-dealkylation were responsible for decreasing nitrosamine-FPs via the destruction of key moieties; this has been elucidated by mass spectroscopy. This study suggests that PCP could be used as an alternative strategy for minimizing nitrosamine-FPs during water treatment. | - |
dc.language | 영어 | - |
dc.language.iso | ENG | - |
dc.publisher | ELSEVIER | - |
dc.title | Changes in levels of N-nitrosamine formed from amine-containing compounds during chloramination via photocatalytic pretreatment with immobilized TiO2: Effect of source water and pH | - |
dc.type | Article | - |
dc.publisher.location | 네델란드 | - |
dc.identifier.doi | 10.1016/j.jhazmat.2021.127398 | - |
dc.identifier.scopusid | 2-s2.0-85116695231 | - |
dc.identifier.wosid | 000711802000001 | - |
dc.identifier.bibliographicCitation | JOURNAL OF HAZARDOUS MATERIALS, v.424, no.A | - |
dc.citation.title | JOURNAL OF HAZARDOUS MATERIALS | - |
dc.citation.volume | 424 | - |
dc.citation.number | A | - |
dc.type.docType | Article | - |
dc.description.isOpenAccess | N | - |
dc.description.journalRegisteredClass | scie | - |
dc.description.journalRegisteredClass | scopus | - |
dc.relation.journalResearchArea | Engineering | - |
dc.relation.journalResearchArea | Environmental Sciences & Ecology | - |
dc.relation.journalWebOfScienceCategory | Engineering, Environmental | - |
dc.relation.journalWebOfScienceCategory | Environmental Sciences | - |
dc.subject.keywordPlus | NDMA FORMATION | - |
dc.subject.keywordPlus | WASTE-WATER | - |
dc.subject.keywordPlus | NITROSODIMETHYLAMINE NDMA | - |
dc.subject.keywordPlus | ALIPHATIC-AMINES | - |
dc.subject.keywordPlus | BY-PRODUCTS | - |
dc.subject.keywordPlus | DEGRADATION | - |
dc.subject.keywordPlus | PHARMACEUTICALS | - |
dc.subject.keywordPlus | SOLAR | - |
dc.subject.keywordPlus | OXIDATION | - |
dc.subject.keywordPlus | PRECURSORS | - |
dc.subject.keywordAuthor | N-nitrosamine formation potential | - |
dc.subject.keywordAuthor | Pharmaceuticals | - |
dc.subject.keywordAuthor | Photocatalysis | - |
dc.subject.keywordAuthor | Reaction pathways | - |
dc.subject.keywordAuthor | Triethanolamine | - |
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