Degradation of Nitrobenzene by Nano-TiO_2/Zeolite/UV Catalyzed Ozonation in Aqueous Solution

The effects of O3/TiO2/zeolite(system A) and O3/TiO2/zeolite/U V(system B) systems on the removal of nitrobenzene from water have been discussed,respectively.Both the system A and the system B,especially system B,can convert ozone to hydroxyl radical,which help to decompose the nitrobenzene of the water.Results show that the degradation rate of nitrobenzene increases with the increasing air flow and temperature.The catalytic ozonation reaction is first order with no respect to the initial concentration of nitrobenzene and the dosage of catalyst.With the increase of pH,the removal rate of nitrobenzene increases which plays a key role in the removal of nitrobenzene.Results also indicate that,there is inhibitory effect of tert-butyl alcohol on the degradation of nitrobenzene.