Ultrasound induced cleaning of polymeric nanofiltration membranes

Thombre, Nitin Vitthalrao; Gadhekar, Amit P.; Patwardhan, Anand V.; Gogate, Parag R.

doi:10.1016/j.ultsonch.2019.104891

Cited by 46 publications

(22 citation statements)

References 50 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Compared to the in-situ connection, the ex-situ connection requires high US power as the transducers are located far from the membrane surface. Most of the attempts if not all, on using US-assisted pressure-driven membrane technologies adopted the ex-situ configuration to avoid membrane damage [79]. However, as stated earlier, this requires highenergy consumption to convey the effects to the membrane surface.…”

Section: Integration Of Us With Pressure-driven Membrane Technologymentioning

confidence: 99%

“…It was mentioned that the cost of fouling control is almost 30% of the total operating cost [132]. US technology was proposed by many researchers as an alternative cleaning technique to control NF membrane fouling [79,112,113]. US frequency is one of the main parameters that significantly affect the cleaning process.…”

Section: Nf-usmentioning

confidence: 99%

“…In a study by Renata et al [135], high ultrasonic power of 240 W was applied to clean the NF membrane used in treating artichoke's solid wastes no significant effect on the fouling layer was observed. Still, the highest chlorogenic acid recovery was achieved when the US power was at 240 W. Thombre et al [79] used US technology for cleaning fouled NF membranes. An ultrasonic power of 135 W achieved the best cleaning process, while with a higher power of 150 W, pitting and corrosion was detected on the membrane surface.…”

Section: Nf-usmentioning

confidence: 99%

See 2 more Smart Citations

Ultrasound-assisted membrane technologies for fouling control and performance improvement: A review

Naji

Al-Juboori

Khan

et al. 2021

Journal of Water Process Engineering

View full text Add to dashboard Cite

Membrane separation is widely used in wastewater treatment and desalination due to its high performance and ability to handle feed solutions of different qualities. Despite vast history of success, membrane fouling remains a major system deficiency that imposes substantial process limitations by reducing permeate production and increasing energy demand. Besides, chemical cleaning-in-place (CIP) adversely affects membrane integrity and generates an extra waste stream. Ultrasound (US) is a relatively new cleaning technique that improves process performance by mitigating fouling accumulation at a membrane surface and improving permeate flux by promoting mass and heat transfer. US-assisted membrane processes is an efficient method for fouling reduction and significant flux improvement. This study comprehensively reviews US applications in pressure-, thermally-and osmotic-driven membrane technologies and their impact on process performance. It also explores the impact of US operating conditions on membrane separation properties and how these parameters can be tuned to achieve the desirable outcome. To date, the application of US in membrane technologies is limited to laboratory tests. In the authors opinion, there is a niche market for US-assisted membrane technology in heavily contaminated water such as wastewater and brine. After critical analysis of the literature, we found that there are still several aspects of the process need to be scrutinized carefully to make an adequate evaluation of its feasibility on an industrial scale. The most urgent one is the techno-economic evaluation of the technology based on large-scale and long-term tests. The study proposed a set of recommendations for future research directions of US applications in membrane technologies.

show abstract

Section: Integration Of Us With Pressure-driven Membrane Technologymentioning

confidence: 99%

Section: Nf-usmentioning

confidence: 99%

Section: Nf-usmentioning

confidence: 99%

See 1 more Smart Citation

Ultrasound-assisted membrane technologies for fouling control and performance improvement: A review

Naji

Al-Juboori

Khan

et al. 2021

Journal of Water Process Engineering

View full text Add to dashboard Cite

show abstract

“…Small bubbles may also act as microstreamers, attaching to the particles and clear them away from the surface. The number of bubbles created under the US irradiation and their growing size are directly affected by the operational parameters such as US power intensity, US frequency, and liquid viscosity [7] , [8] , [9] . Changes in the number and size of the bubbles in turn bring about the variation of energy released to the medium through the bubble explosion.…”

Section: Introductionmentioning

confidence: 99%

In-situ synchrotron X-ray imaging of ultrasound (US)-generated bubbles: Influence of US frequency on microbubble cavitation for membrane fouling remediation

Ehsani

Zhu

Doan

et al. 2021

Ultrasonics Sonochemistry

View full text Add to dashboard Cite

show abstract

“…Thombre et al. (2020) used ultrasound to clean the polymeric nanofiltration membrane and evaluated the effect of frequency and power of ultrasound on the efficiency of membrane cleaning. They resulted that the best ultrasound performance in membrane cleaning was achieved at a frequency of 24 kHz and power of 135 W, which can recover 85% of the water flux.…”

Section: Introductionmentioning

confidence: 99%

The effect of ultrasound treatment on the efficiency of membrane clarification of carrot juice

Hemmati

Mirsaeedghazi

Aboonajmi

2020

J Food Process Preserv

View full text Add to dashboard Cite

Large particles in carrot juice create a turbid appearance; therefore, membrane treatment can be used to clarify it. To evaluate the effect of ultrasound on the membrane processing efficiency, ultrasound (1,000 W, 20 kHz) was applied to carrot juice and membrane unit. Results showed that this process can increase the permeate flux by about 10–3 kg/m2s, and the rate of the increased flux caused by the ultrasound increases with increasing transmembrane pressure and feed flow rate; as, the best performance was achieved in 1 bar and 15 ml/s. Also, cake formation is the main fouling mechanism in the whole process. The total soluble solid content, pH and total phenolic compounds did not change during clarification. But, antioxidant activity (55%), total titratable acidity (47.5%), β‐Carotene (59.2%) and turbidity (97.9%) were decreased. It can concluded that ultrasound can increase the efficiency of membrane processing of carrot juice due to reduce total membrane resistance. Practical applications In this study, ultrasound was applied in the membrane clarification of carrot juice, as one of the newest methods to reduce membrane fouling. The practical application of this study is that by using the cavitation phenomenon and the stress caused by the explosion of the bubbles created in this phenomenon, the large particles of the juice become smaller particles. In addition, this technology breaks down the cake on the membrane, which increases the efficiency of the membrane. This method can be used in most factories, especially in the food industry, when producing fruit juice.

show abstract

Ultrasound induced cleaning of polymeric nanofiltration membranes

Cited by 46 publications

References 50 publications

Ultrasound-assisted membrane technologies for fouling control and performance improvement: A review

Ultrasound-assisted membrane technologies for fouling control and performance improvement: A review

In-situ synchrotron X-ray imaging of ultrasound (US)-generated bubbles: Influence of US frequency on microbubble cavitation for membrane fouling remediation

The effect of ultrasound treatment on the efficiency of membrane clarification of carrot juice

Contact Info

Product

Resources

About