Acoustic cavitation and sonochemistry in industry: State of the art

Islam, Md Hujjatul; Pollet, Bruno G.

doi:10.1016/b978-0-323-91937-1.00001-3

Cited by 2 publications

(2 citation statements)

References 58 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…It does not matter whether the loss mechanism is related to the viscosity of the medium or due to the inhomogeneity of the medium (suspended particles, gas bubbles, cavitation region). The only thing that matters is the irreversibility of the loss of energy and momentum of the acoustic wave [28]. Streams arising in an acoustic field are usually divided into three groups: streams in an inhomogeneous space of limited volume; streams originating outside the acoustic boundary layer; streams that occur in a viscous boundary layer near obstacles.…”

Section: Physical Phenomena Accompanying Electric Discharge Cavitationmentioning

confidence: 99%

Mechanism and Synergy Effect of the Hybrid Water Disinfection Process Using Electric Discharges Combined with Chlorination

Malyushevskaya,

Koszelnik,

Mitryasova

et al. 2024

Preprint

View full text Add to dashboard Cite

An analysis of the physical and chemical phenomena accompanying the electrical discharges was carried out, principal factors inactivating microorganisms is studied. Characteristic factors of an electric discharge in cavitation mode providing a synergistic effect when disinfecting water with a discharge and chemical reagents are identified in order of importance. As a result of the integral action of cavitation, the inactivation of bacteria is intensified both due to the emergence of chem-ically active particles and due to local shock waves, acoustic currents and ultraviolet radiation in the area of cavitating bubbles. The similarity of cavitation processes in water systems implemented by underwater electric discharges and with the ultrasound has been experimentally proved. The main advantage of electric discharge cavitation in comparison with ultrasonic one is the wide band of ultrasonic frequencies of radiation inherent in electric discharge, high intensity and power of cav-itation processes, and, accordingly, the possibility of a significant increase in the volume of the disinfected liquid. The study enable better understanding and prediction of the effects that occur during a high-voltage underwater electrical discharge and have a bactericidal effect.

show abstract

Section: Physical Phenomena Accompanying Electric Discharge Cavitationmentioning

confidence: 99%

Mechanism and Synergy Effect of the Hybrid Water Disinfection Process Using Electric Discharges Combined with Chlorination

Malyushevskaya,

Koszelnik,

Mitryasova

et al. 2024

Preprint

View full text Add to dashboard Cite

show abstract

“…Ultrasound energy produces highly reactive species such as ˙OH radicals, H 2 O 2 , and ozone with high oxidation potentials. 19 These produced species can increase the yield of humic acids by increasing the availability of loading sites for K + coming from KOH, which will allow humic acid species to be dissolved easily as humates in the solution. Ambedkar et al studied the ultrasonic mechanism for the fragmentation of coal (type of coal unspecified) in an aqueous medium at low-frequency ultrasound (25 kHz).…”

Section: Introductionmentioning

confidence: 99%