Degradation of nitroaromatics (MNT, DNT AND TNT) by AOPs

Application of selected AOPs to degrade nitroaromatics (nitrotoluene, dinit rotoluene and trinitrotoluene) in wastewater discharged from the production of TNT has been investigated. The first stage of the experiments was devot ed to test the extent of degradation and improvement in biodegradation of t he pure nitroaromatics using different AOPs: ozone alone, O-3 + H2O2, O-3 UV, and Fenton reaction (Fe2+ + H2O2) at the various experimental conditio ns (pH, ozone concentration in the inlet gas, presence of radical scavenger s). In the second stage degradation of the industrial wastewaters has been examined. Simple ozonation and the Fenton oxidation process were found to b e the most effective.