Degradation of 2,4,6-trichlorophenol by Integrated Microbial-Fe0 Treatment System Under Nitrate-reducing Conditions

Abstract:

In this paper, a batch laboratory test was conducted to study the degradation of 2,4,6-trichlorophenol (2,4,6-TCP) using an integrated microbial-Fe0 treatment system under nitrate-reducing conditions. The changes of pH, nitrate concentration, nitrate-reducing activity were detected under different nitrate concentrations. Results showed that the degradation of 2,4,6-trichlorophenol at an initial concentration of 20 mg/L was significantly inhibited under nitrate-reducing conditions. And 2,4,6-trichlorophenol removal efficiency declined and nitrate-reducing activity raised with the increase of initial nitrate concentration. Nitrate is reduced in this system followed by the reductive dechlorination of 2,4,6-trichlorophenol.