engleski

Chlorinated Hydrocarbons Wastewater ; Deagradation Towards Minimization

Chlorinated phenols are a group of chlorinated hydrocarbons important in the manufacture of herbicides and fungicides, and they could also be coupling components in an azo dye production. Therefore they can be found in wastewater originated from those industries. Additionally, they are toxic for the environment and human health so there is a clear demand to treat that type of wastewater prior to the discharge into the effluents in order to degrade and to minimize their influence on the environment and living organisms. The objective of this work was to degrade 4-chlorophenol (4-CP) by the following advance oxidation processes (AOPs): Fenton’ s, Ozone and Peroxone processes. The impact of solid particles such as zeolites HY and NH4ZSM5 on efficiency of Fenton’ s and Ozone processes was also studied. Batch experiments were carried out to investigate the effects of pH, hydrogen peroxide and zeolite concentrations on 4-chlorophenol degradation in Fenton’ s, Ozone and Peroxone processes at constant levels of iron salt and ozone flow at room temperature. Degradation of 4-chlorophenol was monitored by TOC, HPLC and AOX analysis. On the basis of those measurements optimal conditions for all the AOPs applied were established. Kinetic model for 4-chlorophenol degradation was also developed.

AOPs, chlorinated phenols, wastewater, mineralization, kinetics, zeolites

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