Journal of Industrial and Engineering Chemistry, Vol.20, No.5, 2914-2920, September, 2014
Optimum conditions for testing N-nitrosamine formation potential (FP) through ozonation in wastewater samples
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N-nitrosamines are potential carcinogens that are formed during disinfection by chlorination/
chloramination or ozonation. In this study, the main objective was to optimize ozonation experimental conditions (pH and temperature) for the production of N-nitrosamines by using the CCD method in wastewater matrices. As the results, maximum NDMA FPO3 (formation potential by ozonation) occurred at pH 8.96 and a temperature of 20.0 ℃. Furthermore, attempts to reduce the concentrations of eight Nnitrosamines revealed that none was removed or reduced in concentration by ozonation using Milli-Q water for 2 h.
Keywords:N-nitrosamines;Formation potential (FP);Ozonation;Response surface methodology (RSM);Central composite design (CCD)
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