Abstract

Increased contributions from wastewater discharges and algal activity in drinking water supplies can lead to elevated levels of dissolved organic nitrogen (DON), which can increase the likelihood for the formation of emerging nitrogenous disinfection by-products (N-DBPs) of health concern. Dissolved organic matter (DOM) isolated from five waters, using a newly developed DOM isolation method specific to DON fractionation, produced thirty-four isolates of suitable mass. Each isolate was treated with free chlorine or chloramines under formation potential conditions. The DBP yields were determined for three halogenated DBPs (trichloromethane, dichloroacetonitrile, and trichloronitromethane) and one non-halogenated DBP (N-nitrosodimethylamine [NDMA]). Halogenated DBP yields were greater during the application of free chlorine, however chloramination produced significant levels of halogenated N-DBPs for some isolates. NDMA was only observed to form from selected nitrogen-enriched isolates (DOC/DON ratio < 20 mg/mg), especially those isolated from treated wastewater. Other results indicated that nitrogen-enriched DOM resulted in increased yields of the other N-DBPs studied.

Original languageEnglish (US)
Pages (from-to)135-143
Number of pages9
JournalWater Science and Technology
Volume60
Issue number1
DOIs
StatePublished - 2009

Fingerprint

dissolved organic nitrogen
Disinfection
dissolved organic matter
disinfection
Biological materials
Byproducts
Nitrogen
chlorine
nitrogen
wastewater
Chlorine
Wastewater
fractionation
Fractionation
Water supply
Potable water
by-product
Health
water
Water

Keywords

  • Emerging disinfection by-products
  • Haloacetonitrile
  • Halonitromethane
  • N-nitrosodimethylamine

ASJC Scopus subject areas

  • Environmental Engineering
  • Water Science and Technology

Cite this

Nitrogen enriched dissolved organic matter (DOM) isolates and their affinity to form emerging disinfection by-products. / Dotson, A.; Westerhoff, Paul; Krasner, S. W.

In: Water Science and Technology, Vol. 60, No. 1, 2009, p. 135-143.

Research output: Contribution to journalArticle

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