摘要：The H 2 O 2 /pyridine/Cu(II) advanced oxidation system is a treatment method involving a combination of atransition metal ion with ligand molecules which decomposes H 2 O 2 to produce hydroxyl radicals (OH*),which will then lead to the mineralization of organic compounds to produce CO 2 and H 2 O. Mostresearches used this system on synthetic dye wastewater and reported removal in colour only. Thisstudy was carried out to assess and to optimize the treatment efficiency in terms of COD reductionand colour removal using this system in the treatment of industrial dye wastewater. Full factorialdesign and central composite design (CCD) from the response surface methodology (RSM) wereutilized in the screening and optimization of the system. Results obtained indicated that this systemwas found to be capable in reducing the concentration of COD of the dye wastewater up to 80% andremoving 94% of the colour at the optimal concentrations of 0.0023 M [H 2 O 2 ], 0.0073 M [pyridine],0.0123 M [Cu(II)] and at pH 10. Final COD concentration was recorded at 102 mg/L, and colour point at55 PtCo. Amount of sludge produced at the end of this treatment system was 260 mg/L.
关键词：H2O2/pyridine/Cu(II);
Optimization;
Industrial dye wastewater;
Full factorial design;
Central composite design
