Addition of Chlorinated Compounds in the Sonochemical Degradation of 2-Chlorophenol

Abstract

This paper outlines the research carried out on the sonochemical degradation of 2-chlorophenol in the presence and absence of chlorinated compounds. The degree of enhancement varied according to the characteristics of chlorinated compounds. The higher oxidation states of carbon in chlorinated compounds increase the degradation rate of 2-chlorophenol. When tetrachloroethylene (PCE) and chloroform (CF) have the same oxidation number, PCE is in a fully oxidized state. Therefore, the degradation rate of 2-chlorophenol in PCE is higher than that in CF. Free chlorine was formed from the sonochemical decomposition of chlorinated compounds. This free chlorine was then used for degrading the 2-chlorophenol or chlorinated compound itself. The amount of free chlorine is ordered by oxidation states of carbon in chlorinated compounds. The degradation rates of chlorinated compounds decreased with the co-presence of 2-chlorophenol, which is a result of ultrasonic energy being distributed to both compounds. An increase in time corresponds to a higher concentration of chloride ion. However, the application of the full amount of chlorinated compounds cannot complete dechlorination.