A critical review on the sonochemical degradation of organic pollutants in urine, seawater, and mineral water

Abstract

Highlights Sonodegradation of organic pollutants in ions-rich matrices is critically reviewed. Ultrasound is able to degrade pollutants of diverse nature in ions-rich matrices. Low concentrations of contaminants favor degradation in mineral water and seawater. Efficient pollutants sonodegradation in mineral water or seawater but action in urine is limited. Ecotoxicity and transformations after ultrasound action on matrices must be tested.

Recent trends in the applications of sonochemical reactors as an advanced oxidation process for the remediation of microbial hazards associated with water and wastewater: A critical review

“…The size of large molecules reduces, and the particles are destroyed; hence, better biodegradation is observed. It also increases the rate of reactions in biological processes, and increased mass transfer is a function of ultrasonic power [61] , [62] .…”

“…Transition cavitation is, therefore, a physical process responsible for altering the structure of microorganisms. The higher the intensity of the UE, the more stable the cavitation phenomenon [58] , [59] , [60] , [61] , [62] .…”

Recent advances in carbon-based nanomaterials for the treatment of toxic inorganic pollutants in wastewater

“…These materials can undergo an oxidation reaction in some conditions, such as with the correct temperature, catalyst loading, pressure and stirrer speed. 28 Photocatalytic carbon nanofibers can be used in wastewater treatment and their structure and shape have been analysed using transmission electron microscopy and scanning electron microscopy. Moreover, carbon nanofibers are produced by various methods, like electrospinning and sol–gel processes.…”

Degradability of organic micropollutants with sonolysis—Quantification of the structural influence through QSPR modelling

“…A possible explanation for the increased reactivity of nonpolar compounds in sonolysis could be given by looking at potential degradation pathways. Hydrophilic molecules mostly react with ROS in the bulk solution, whereas hydrophobic thus nonpolar, non-volatile compounds undergo degradation in the bubble-liquid interface via thermal and/or radical pathways [35]. As the ROS concentration is higher in the interface, the degradation of hydrophobic compounds therefore tends to be faster.…”