Review on low- and high-frequency sonolytic, sonophotolytic and sonophotochemical processes for inactivating pathogenic microorganisms in aqueous media

Matafonova, Galina; Batoev, Valeriy

doi:10.1016/j.watres.2019.115085

Cited by 66 publications

(26 citation statements)

References 114 publications

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“…Nowadays, research is being conducted on the use of low and high frequency ultrasound in disinfection of sewage and sewage sludge on an increasing scale. They confirm the effectiveness of ultrasonic waves in destroying microorganisms [8,16,17,45,46].…”

Section: Membrane Methodssupporting

confidence: 57%

Methods Used in Disinfections of Wastewater and Sewage Sludge – Short Review

Hawrylik

2020

Architecture, Civil Engineering, Environment

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Wastewater and sewage sludge are a place of occurrence of many microorganisms, including viruses, pathogenic and relatively pathogenic bacteria. They can leak into other environments, i.e. receiver waters or soil, thus creating a biological hazard. Increasing the sanitary level of safety of municipal wastewater treatment plants requires the introduction of disinfection of sewage and sewage sludge. The purpose of this article is a short review of the literature on methods used in disinfection of wastewater and sewage sludge. The work discusses the sanitary characteristics of wastewater and sewage sludge, primarily paying attention to the physical and chemical methods used to disinfect them. In addition, attention was also paid to the aspect of practical use of disinfection in municipal wastewater treatment plants around the world.

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Section: Membrane Methodssupporting

confidence: 57%

Methods Used in Disinfections of Wastewater and Sewage Sludge – Short Review

Hawrylik

2020

Architecture, Civil Engineering, Environment

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“…Most studies on microbial inactivation are conducted at low frequencies (20–44 kHz) and high powers (>100 W applied power), with few studies conducted at higher frequencies (>100 kHz) or low power [8] , [13] , [46] , [47] . Sonochemical effects in general are enhanced in the range 200–1,000 kHz thus the inactivation of microorganisms could also be enhanced at higher frequencies [45] , [48] , [49] . The effect of Gram-stain on ultrasound efficacy is yet to be fully elucidated, with some studies indicating that Gram positive bacteria (e.g.…”

Section: Introductionmentioning

confidence: 99%

The effect of ultrasound treatment in combination with nisin on the inactivation of Listeria innocua and Escherichia coli

Costello

Velliou

Gutierrez-Merino

et al. 2021

Ultrasonics Sonochemistry

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Highlights A multi-frequency study of ultrasound (US) and nisin for microbial inactivation. US impacts E. coli at 500 kHz only; L. innocua resists all frequencies studied. Nisin applied before US enhances inactivation of E. coli but not when applied after. Attributed to outer membrane destabilisation by US allowing nisin penetration. System structure (viscosity) reduces US inactivation efficacy.

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“…On the other hand, ultrasonic inactivation could conquer the above-mentioned limitations, due to its strong penetrating ability. Therefore, ultrasonic inactivation itself, or combined with UV irradiation, could be helpful in the fight against bacterial resistance [7] .…”

Section: Introductionmentioning

confidence: 99%