Pt-담지촉매를 이용한 염색폐수의 촉매습식산화에 대한 연구 = A Study on the Catalytic Wet Air Oxidation of Dyehouse effluents Using Pt-supported Catalysts

다국어 초록 (Multilingual Abstract)

To assess problems associated with treatment of an aqueous waste stream from dyehouse, catalytic wet air oxidation (CWAO) of the reactive dyes were investigated. Reactive black 5 and reactive blue 19 were employed as the model pollutant compounds in dyehouse effluents. CWAO was carried out with the Pt/TiO₂Pt/Al₂O₃ and Pt/activated carbon catalysts at 2.3㎫ and 120-250℃. Both the reactive dyes in aqueous solution could be destroyed through the catalytic wet oxidation, and Pt/TiO₂ catalyst was proved to be the most reactive toward the wet oxidation of the reactive dyes. The removal of TOC by CWAO was sensitive to the reaction temperature and catalyst loading which were important variables of the catalytic wet air oxidation. Reactive blue 19 could readily be oxidized than reactive black 5. In addition it was observed that the sulfur in the reactive dyes was oxidized into SO₄^-2 ion, while only part of the nitrogen atoms in the reactive dyes was converted to NO₃ ion and the other part of nitrogen atoms seems to be converted to the gaseous product of N₂.