Comparision of degradation activities of azodye reactive yellow 145 and pesticide 2,4 diklorophenoxyaceticacid by nanoscale zero valent iron, fenton and photo-fenton process

Nano Zero Valent Iron products are higly applicable in the reductiontechnologies of ground water remediation, industrial water and waste water treatmentand many other applications due to the extraordinary reduction capabilities, smallsize of particles in the range of nanometers and high reactivity with a broad spectrumof toxic substances. Residual dye contents in textile dyeing waste water and pesticidehave complex aromatic structures that are resistant to degrade in biologicalwastewater treatment. Degradation of the azo dye RY145 and herbicide 2,4-D hasbeen investigated in solutions containing nanoscale zero valent iron particles andfound to be effectively degraded by an oxidative pathway. Results have beencompared with Fenton and photo-Fenton process.