Study on Ultrasonic Degradation of Pentachlorophenol Solution

N. Xu, X. P. Lu and Y. R. Wang

Abstract
Pentachlorophenol (PCP) ion was degraded by ultrasound at 25 ˚C. Four aspects that could affect the degradation of PCP were investigated, i.e. initial pH of solution, initial concentration of pentachlorophenol ion, different sound intensity with catalyst and different frequencies of ultrasound. Results showed that PCP ion could be ultrasonic degraded totally after 3 hour treatment if CCl4, which can provide free radical, was added in solution. The mechanism of ultrasonic degradation was considered as free radical oxidation by adding n-butyl alcohol as free radical scavenger.

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Keywords
ultrasonic, immediate biodegradability, pentachloropheol, ion