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Sonolysis of chlorinated compounds in aqueous solution.

Lim MH, Kim SH, Kim YU, Khim J

Department of Civil and Environmental Engineering, Korea University, 5-ga, Anam-dong, Sungbuk-gu, Seoul 136-701, South Korea.

To examine the reaction rates of sonochemical degradation of aqueous phase carbon tetrachloride, trichloroethylene and 1,2,3-trichloropropane at various temperatures, power intensities, and saturating gases, the batch tests were carried out. The degradations of chlorinated hydrocarbons were analyzed as pseudo first order reactions and their reaction rate constants were in the range of 10(-1)-10(-3)/min. The reaction was fast at the low temperature with higher power intensity. Also, the reaction went fast with the saturating gas with high specific heat ratio, high solubility and low thermal conductivity. The main mechanism of destruction of chemicals was believed the thermal combustion in the bubble.

Published 10 October 2006 in Ultrason Sonochem, 14(2): 93-8.
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