The effect of humic acids on nitrobenzene oxidation by ozonation and O-3/UV processes


Latifoglu A., Gurol M.

WATER RESEARCH, cilt.37, ss.1879-1889, 2003 (SCI İndekslerine Giren Dergi) identifier identifier identifier

  • Cilt numarası: 37 Konu: 8
  • Basım Tarihi: 2003
  • Doi Numarası: 10.1016/s0043-1354(02)00583-3
  • Dergi Adı: WATER RESEARCH
  • Sayfa Sayıları: ss.1879-1889

Özet

Three types of commercially available humic acids from different sources were used to simulate natural organic matter in water for the investigation of nitrobenzene oxidation by ozonation and O-3/UV. Despite the structural differences among the Fluka, Aldrich and Suwanee River humic acids as reflected by the UV absorptivity, their effects on nitrobenzene removal rate was observed to be similar for the two processes. Removal rate of nitrobenzene was hindered by the addition of humic acids in ozonation as well as in O-3/UV processes. However, the hindrance by the humic acids was more pronounced in O-3/UV as compared to the ozonation process. The effect of humic acid in O-3/UV was primarily a UV light screening. Addition of humic acids above a certain concentration did not cause any further retardation on nitrobenzene removal rate by ozonation and O-3/UV.