Notice of RetractionDegradation of 4-Chlorophenol Simulated Bio-Chemical Effluent from Coal Gasification Industry by Catalytic Ozonation

Notice of Retraction

After careful and considered review of the content of this paper by a duly constituted expert committee, this paper has been found to be in violation of IEEE´s Publication Principles.

We hereby retract the content of this paper. Reasonable effort should be made to remove all past references to this paper.

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The catalytic ozonation of 4-chlorophenol (4-cp) was catalyzed by using MnO_x/γ-Al₂O₃ catalyst, and the optimal reaction conditions were studied and used for the degradation of the refractory organic pollutants in the coal gasification wastewater. It was observed that the degradation of 100mg/L 4-cp undergone a faster kinetics than the mineralization, 99.97% 4-cp was removed in 30min and 84.63% total organic carbons (TOC) of 4-cp was eliminated after 30min in the presence of 3.0 g·L^-1 MnO_x/γ-Al₂O₃ catalyst and the 3.0 g 0₃·h^-1 ozone. The parameters such as initial pH value, the initial ozone dosage, the dosage of MnO_x/γ-Al₂O₃ catalyst, the initial concentration of 4-cp and the reaction temperature could influence significantly on the degradation and the mineralization of 4-cp.