Two pathways have been suggested to account for nitrile [HAN, CNCl] formation during
chlorine or chloramine disinfection. The first pathway, the "decarboxylation pathway", has been
studied by numerous researchers. A second pathway, the "aldehyde pathway",
is based on a reaction between monochloramine and aldehydes to form the corresponding nitrile.
As part of a study on nitrogenous (N) disinfection byproducts (DBPs), two halogenated disinfection byproduct formation potential (DBPFP) tests were conducted in
raw and treated waters: one in the presence of chlorine; and, the other in the presence of
chloramines. The latter formation potential (FP) test was also used for the evaluation of NDMA precursors.
Moreover, a third FP test was developed, with pre-chlorination and post-chloramination, in order
to measure cyanogen halide (CNX) precursors. Objectives of this study included identification
of N-DBP precursors in source waters, the formation and control of N-DBPs, and their
mechanism of formation. Includes 29 references, figures.
| Edition : | Vol. - No. |
| File Size : | 1
file
, 210 KB |
| Note : | This product is unavailable in Ukraine, Russia, Belarus |
| Number of Pages : | 11 |
| Published : | 11/01/2007 |
