화학공학소재연구정보센터
Korean Journal of Chemical Engineering, Vol.36, No.3, 433-438, March, 2019
Cell structure destruction and its kinetics during hydrothermal treatment of sewage sludge
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During hydrothermal treatment (HT) of sewage sludge (SS), its cell structure is decomposed and its organic content is released. An increase in the total organic carbon content in the liquid phase was experimentally determined in the temperature range of 130-250 °C with a fixed pressure of 5MPa and residence time of 10min. By using the Arrhenius equation, the pre-exponential factor and activation energy were successfully determined for the first time for the degradation of SS cells as 3.96 X 1010 s-1 and 115 kJ mol-1, respectively, for the temperature range of 130-250 °C. Increasing the HT temperature increasingly destroyed the cell structure of SS.
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