Archives

  • Archives
  • >
  • Home

DOI : 10.17640/KSWST.2016.24.3.31 ,    Vol.24, No.3, 31 ~ 39, 2016
Title
Effect of Environmental Factors on the N-nitrosodimethylamine (NDMA) Formation
박상천 Sung Chun Park , 김종오 Jongo Kim
Abstract
N-nitrosodimethylamine (NDMA) formation was broadly studied in terms of pH ratio, monochloramine concentrations, longer contact time, and the ratio of nitrogen content in dimethylamine (DMA) to total nitrogen composition as various environmental factors in water treatment system. The formation of NDMA increased with increasing pH and contact time. The NDMA formation at pH 8 was usually twice that at pH 7 at a DMA of 0.01 mM. At pH 7 and 8, generally more than nine times higher NDMA formation was observed with increasing monochloramine concentrations when the DMA concentration was changed from 0.01 mM to 0.05mM. It is likely that pH and monochloramine was more related to stimulate NDMA formation in water treatment systems.
Key Words
Chlorine, Dimethylamine (DMA), Disinfection by-product, Monochloramine, N-nitrosodimethylamine (NDMA), Nitrogen content, Water treatment system
pdf view PDF