The multiple role of acoustic cavitations: Hydrogen production and Water treatment

Abstract

In the field of water treatment, the destruction of organic compounds that cannot be degraded by conventional means is a target of fundamental and applied investigations. The process based on the phenomena induced by ultrasonic cavitation has shown a potential in this regard as demonstrated by the remediation of water contaminated by organic pollutants. The chemical effects of ultrasound are due to the phenomenon of cavitation, which is the nucleation, growth and implosive collapse of bubbles in a liquid. In water, the implosion of cavitation bubbles is high-energy processes that lead to thermal reactions and to the homolysis of water and dioxygen. The scission of...