Sonochemical degradation of aromatic compounds, surfactants, and dyes in aqueous solutions #25

Abstract

Sonochemical degradation of hazardous organic compounds such as dyes, organic acids, aromatic compounds, and surfactants is summarized. The effects of dissolved gas, pH, and the initial concentration of organic compounds were evaluated in aqueous solutions mainly using a standing wave sonication system with 200-kHz ultrasound. The relationship between physicochemical properties of aromatic compounds and rates of degradation is discussed for a range of aromatic compounds. The degradation mechanism and kinetics are described. The effects of various additives, such as inorganic ions, organic additives, inert solid particles, and reactive transition metal powders, and the effect of reaction vessel diameter on the rates of degradation are also addressed.