Sonochemical control of fouling formation in membrane ultrafiltration of wastewater: Effect of ultrasonic frequency

Naddeo, Vincenzo; Borea, Laura; Belgıorno, Vincenzo

doi:10.1016/j.jwpe.2014.12.005

Cited by 58 publications

(14 citation statements)

References 34 publications

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“…It is evident that low ultrasound frequency was more effective in enhancing the permeate flux. Similar effect of ultrasound frequency on flux enhancement has been observed in other studies [30,84,89,90,92,93,98,107,110].…”

Section: Ultrasound Frequencysupporting

confidence: 88%

The use of ultrasound to mitigate membrane fouling in desalination and water treatment

et al. 2018

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Section: Ultrasound Frequencysupporting

confidence: 88%

The use of ultrasound to mitigate membrane fouling in desalination and water treatment

et al. 2018

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“…Membrane cleaning with US uses high-frequency sound waves to create microbubbles that collapse, with a release of energy, which help to remove foulant from the membrane surface, since the interaction between foulant and membrane is weakened. In addition, the high pressures and temperatures generated with the collapsing of microbubbles are a source of -OH radicals, which may lead to the oxidation of organic pollutants and molecules at the gasliquid interface (Naddeo et al, 2014).…”

Section: Introductionmentioning

confidence: 99%

Study of membrane cleaning with and without ultrasounds application after fouling with three model dairy solutions

Luján-Facundo

Mendoza–Roca

Cuartas-Uribe

et al. 2016

Food and Bioproducts Processing

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The aim of this study was to investigate the behaviour of two ultrafiltration (UF) membranes after their fouling with different fouling solutions and cleaning with a surfactant, including the application of ultrasounds (US). Thus, two UF membranes (UH030 and UP005) were fouled with three different whey model solutions that consisted of bovine serum albumin (BSA) with a concentration of 1% w/w, BSA (1% w/w) plus CaCl2 with a concentration of 0.17% w/w and whey solution (Renylat 45) with a concentration of 2.22% w/w. Chemical cleaning was carried out with P3 Ultrasil 115 solution at temperatures between 25ºC and 45ºC and concentrations in the range between 0.5% v/v and 0.9% v/v. US were applied in some of the tests at a frequency of 20 kHz and nominal power of 300W. The results demonstrated that US cleaning was 2 effective to enhance the permeability recovery, although this enhancement was only up to 9%. Concerning fouling, results from resistances calculations showed that for UH030 membrane prevails the reversible fouling whereas for UP005 membrane predominate irreversible fouling.

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“…Substantial research has been conducted for developing various approaches to improve membrane fouling resistance [8][9][10][11]. Membrane fouling controls via physical means (i.e., backwashing, relaxation, air sparging) and chemically via improved chemical cleaning have long been established for improving membrane permeability [3,9,[12][13][14]. Such procedures have been incorporated into filtration to allow a more sustained operation.…”

Section: Introductionmentioning

confidence: 99%

Filterability of Polysulfone Membrane in a Tilted Panel System for Activated Sludge Filtration

Ismail

Mulyati

Aprilia

et al. 2020

Water

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Membrane bioreactors (MBRs) are established technology for treatment of domestic and industrial wastewater because they offer a small footprint and high quality of effluent, in addition to lower excess sludge. However, their widespread applications are still limited by higher expenditure for compensating for membrane fouling. In this study, polysulfone (PSF)-based ultrafiltration membranes were developed and integrated with a tilted panel system for fouling control in activated sludge filtration. The results show an enhanced performance of filtration system thanks to the mutual advantage of the tilted panel system and the membrane properties. Both membranes showed a clear trend of higher permeability with respect to the tilted panel parameters, namely, higher tilting angle, higher aeration rate, and shorter intermittent/switching period. PSF-1 (1 wt% polyethylene glycol (PEG) additive) shows significantly better performance than PSF-3 (3 wt% PEG additive) although their mean flow pore size, structural properties, and contact angle do not differ significantly. PSF-1 shows superior filterability performance of about 45% for panel tilting angles of 20° at an aeration rate of 1.8 L·min−1, and 11% for a switching period of 1 min compared with PSF-3. The key property enhancing the performance of the PSF-1 is its narrower distribution of pore size. Overall results suggest that an optimum system could be achieved by optimizing both the filtration system and the membrane material properties.

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Sonochemical control of fouling formation in membrane ultrafiltration of wastewater: Effect of ultrasonic frequency

Cited by 58 publications

References 34 publications

The use of ultrasound to mitigate membrane fouling in desalination and water treatment

The use of ultrasound to mitigate membrane fouling in desalination and water treatment

Study of membrane cleaning with and without ultrasounds application after fouling with three model dairy solutions

Filterability of Polysulfone Membrane in a Tilted Panel System for Activated Sludge Filtration

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