Degradation of 2,4,6-Trichlorophenol by Hydrogen Peroxide Catalyzed by Nano-Iron

In this paper, the degradation of 2,4,6-trichlorophenol (TCP) by hydrogen peroxide catalyzed by nano-iron was studied. Nano-iron was obtained through chemical reduction of FeSO₄·7H₂O and KBH₄. The influences of pH, the concentration of H₂O₂, temperature, ionic strength and the amount of nano-iron on the degradation of TCP were investigated. The result showed that under the optimized condition, more than 95 percent of the TCP can be degraded in 60 min. Initial pH was proved to have significant effect on the degradation and lower pH brought faster degradation rate. When initial pH was 3, the effect was the best.