In this study, the effect of bromide ion on monochloramine loss was examined in the presence of
natural organic matter (NOM). Bromide ion catalyzes monochloramine autodecomposition by
the formation of active bromine intermediates. However, in the presence of NOM, the active
bromine may either react with NOM or monochloramine. In the presence of monochloramine
and NOM, bromide increases monochloramine loss but not if bromide catalyzed
autodecomposition and monochloramine reaction with the NOM are dominant loss pathways.
Also, significant quantities of brominated haloacetic acids (HAAs) are formed. Therefore,
resolution of the active bromine pathways is critical to the understanding of monochloramine
loss and formation of brominated HAAs. This work shows the preliminary results of modeling
monochloramine loss in the presence of NOM and bromide ion semi-mechanistically. The
ability to resolve the monochloramine loss pathways in the presence of multiple reactive
constituents, such as NOM and bromide, will provide a relationship to model the formation of
chlorinated and brominated HAAs. Includes 10 references, table, figures.
| Edition : | Vol. - No. |
| File Size : | 1
file
, 280 KB |
| Note : | This product is unavailable in Ukraine, Russia, Belarus |
| Number of Pages : | 6 |
| Published : | 06/16/2002 |
