Synthesized cobalt modified activated carbon was used in the catalytic degradation of dye wastewater. Parameters affecting degradation efficiency and chemical reaction kinetics were investigated. Ultrasonic impregnation and calcination were used as pretreatment process to obtain cobalt modified activated carbon. Thermal gravimetric analysis indicated that the weight loss temperature of cobalt modified activated carbon was 673.15?, which was 303.15? higher than activated carbon. X-ray diffraction analysis showed that cobalt modified activated carbon appeared characteristic peak when 2? is 20.9�?37.1�?43.0� and CoO appeared characteristic peak when 2? is 19.1�?31.3 �?36.7�?42.4�. The surface of activated carbon had polymorphs doped CoO cubic crystal diffraction peak. During the preparation, the doped cobalt presented in the activated carbon in the final form of CoO. Scanning electron microscopic analysis showed that the presence of the CoO introduced more crystalline defects and uneven to the cobalt modified activated carbon.The influence of solution acidity, activated carbon dosage, dye concentration and microwave power to catalytic degradation of dye wastewater were further studied.Degradation of dye wastewater process parameters�Degradation kinetic equation and parameters�Key words: microwave, cobalt modified activated carbon, dye, kinetics

Microwave catalytic degradation of dye wastewater by cobalt oxide modified activated carbon

244th National Meeting (2012)

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