Effect of bromide on NDMA formation during chloramination of model precursor compounds and natural waters
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| Auteurs: | , , |
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| Format: | artículo original |
| Date de publication: | 2020 |
| Description: | In this work, we investigated the effect of bromide ion (Br−) on NDMA formation using model precursor compounds, wastewater effluents and surface waters. Previous studies showed that Br− reacts with chloramines and forms bromochloramine, a reactive compound responsible for NDMA formation enhancement. Some limitations of those studies were the highest Br− concentrations used, and the limited number of precursors considered. Here, we observed enhancement of NDMA formation from most of the model precursor compounds within the Br− range (0–1000 μg/L) but this effect was suppressed in the presence of NOM. Also, NDMA formation was favored at pH 8 in the presence of Br− compared to pH 6. Nevertheless, Br− suppressed NDMA formation in wastewater effluent samples at low monochloramine doses while no effects were observed in surface waters. |
| Pays: | Kérwá |
| Institution: | Universidad de Costa Rica |
| Repositorio: | Kérwá |
| OAI Identifier: | oai:kerwa.ucr.ac.cr:10669/84635 |
| Accès en ligne: | https://www.sciencedirect.com/science/article/pii/S0043135419310978 https://hdl.handle.net/10669/84635 |
| Access Level: | acceso abierto |
| Mots-clés: | NDMA Bromide Natural water NDMA model precursors Wastewater |