Fate of Nitrosodimethylamine (NDMA)

K. Jahan, R. Smith, D. Scrivani, D. Giacobbe, J. McDonough, A. Addu

Research output: Chapter in Book/Report/Conference proceedingConference contribution

1 Scopus citations

Abstract

Nitrosodimethylamine (NDMA) is a known animal carcinogen and is noted as a probable human carcinogen by the USEPA with a lifetime risk of contracting cancer of 10-6 at 0.7 ng/L. This contaminant is of rising concern since its production is linked to disinfection processes at water and wastewater treatment plants. The formation of NDMA is also associated with the production of rocket fuel. Therefore, a need to develop an effective treatment process to remove NDMA from water is needed. Batch experiments were conducted to determine the biodegradability and photodegradation of NDMA at varying concentrations. Biodegradation experiments were conducted with a mixed bacterial culture obtained from a wastewater treatment plant. Oxygen uptake and cell growth was monitored with time. Results indicated that NDMA was biodegradable with some inhibition at higher concentrations. Batch photodegradation experiments were carried out in the presence and absence of titanium dioxide (TiO2) a common catalyst used to accelerate photodegradation. The removal of NDMA using photodegradation appears to be a feasible method. Initial removal rates are high. Lower pH and the addition of titanium dioxide accelerated the removal of NDMA. During the degradation of NDMA, by-products such as dimethylamine (DMA), formaldehyde, and nitrate were produced and remained at nearly constant concentrations.

Original languageEnglish (US)
Title of host publicationWaste Management and the Environment IV
PublisherWITPress
Pages665-674
Number of pages10
Volume109
ISBN (Print)9781845641139
DOIs
StatePublished - Jan 1 2008
Event4th International Conference on Waste Management and the Environment, Waste Management 2008 - Granada, Spain
Duration: Jun 2 2008Jun 4 2008

Other

Other4th International Conference on Waste Management and the Environment, Waste Management 2008
CountrySpain
CityGranada
Period6/2/086/4/08

All Science Journal Classification (ASJC) codes

  • Environmental Science(all)

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