| 초록 |
Industrial wastewater generally contains toxic and hazardous organic pollutants which can cause severe problems for the environment. They must be treated in order to satisfy the stringent water quality regulations and the demand for recycling of water in the process. One of the most promising technologies for water treatment is a heterogeneous catalytic wet air oxidation (CWAO) in which the organic pollutants are either partially oxidized into biodegradable intermediates or mineralized to carbon dioxide, water under mild conditions. In this work, the Cu and Mn catalysts, which show the high catalytic activites for the CWAO of various organic compounds, were co-impregnated on three different supports, namely, γ-Al2O3, TiO2 and Ce0.65Zr0.35O2, and tested in the CWAO of phenol. Among the tested catalysts, only the Ce0.65Zr0.35O2-supported Cu-Mn catalyst exhibited the enhanced activity as compared to the results with Cu and Mn catalysts solely used. It was attributed to the synergy effect bewteen active metals and Ce0.65Zr0.35O2 support having excellent oxygen storage capacity. Co-impregnation of Cu and Mn effectively decreased the metal leaching. |
