To meet the requirements defined by environmental protection regulations effective wastewater treatment is required to process effluents before discharging them into sewers or living waters. While membrane separation offers a quite advantageous method to reduce the organic load of wastewaters, membrane fouling is still limiting its application in wastewater treatment.
In this study, the possibility of membrane fouling reduction by increased shear rates on the surface of the membrane was investigated. 7 and 10 kDa MWCO ultrafiltration and 240 Da nanofiltration membranes were studied, with the use of a laboratory mode Vibratory Shear Enhanced Processing. This work mostly focused on studying the effects of module vibration and recirculation feed flow rate on permeate flux, specific energy demand and membrane rejections. Using the same operation parameters, vibration and non-vibration mode experiments were carried out with high and low recirculation flow rate to have a deeper understanding of the shear rate effects. It can be concluded that higher shear rate had a positive effect on the process: increased shear rate resulted in higher flux, higher overall rejection values, as well as a significantly decreased specific energy demand. By calculating and comparing the shear rates in experiments with different operating parameters, both vibration and nonvibration mode, both low and high recirculation flow rate, we have reached the conclusion that vibration causes a significantly higher shear rate increase than setting the recirculation flow rate high.
ProCite
RefWorks
Reference Manager
BibTeX
Zotero
EndNote
-
Al-Akoum, O., Mercier-Bonin, M., Ding, L., Fonade, C., Aptel, P., Jaffrin, M. (2002) Comparison of three different systems used for flux enhancement: application to crossflow filtration of yeast suspensions. Desalination, 147: 31–36.
-
Berry, S. D., Sheehy, P. A., Williamson, P., Sharp, J. A., Menzies, K., Lefevre, C., Digby, M., Nicholas, K. R., Wynn, P. C., Snell, R. G. (2014) Significance, origin, and function of bovine milk proteins : the biological implications of manipulation or modification. In Singh, Harjinder, Boland, Mike and Thompson, Abby (eds), Milk proteins: from expression to food, Elsevier, Amsterdam, The Netherlands, 113–140.
-
Bian, R., Yamamoto, K., Watanabe, Y. (2000) The effect of shear rate on controlling the concentration polarization and membrane fouling. Proceedings of the Conference on Membranes in Drinking and Industrial Water Production, 1: 421–432.
-
Delaunay, D., Rabiller-Baudry, M., Gozálvez-Zafrilla, J. M., Balannec, B., Frappart, M., Paugama, L. (2008) Mapping of protein fouling by FTIR-ATR as experimental tool to study membrane fouling and fluid velocity profile in various geometries and validation by CFD simulation. Chemical Engineering and Processing, 47: 1106–1117.
-
Frappart, M., Jaffrin, M., Ding, L. H. (2008) Reverse osmosis of diluted skim milk: Comparison of results obtained from vibratory and rotating disk modules. Separation and Purification Technology, 60: 321–329.
-
Goh, P. S., Lau, W. J., Othman, M. H. D., Ismail, A. F. (2018) Membrane fouling in desalination and its mitigation strategies. Desalination, 425: 130–155.
-
Jianquan, L., Cao, W., Ding, L. H., Zhu, Z., Wan, Y., Jaffrin, M. Y. (2012) Treatment of dairy effluent by shear-enhanced membrane filtration: The role of foulants. Separation and Purification Technology, 96: 194–203.
-
Koris, A., Emma, P., Vatai, Gy., Bekassy-Molnar, E., Enrico, D., Lidietta, G. (2011) Investigation on the effects of a mechanical shear-stress modification method during cross-flow membrane emulsification. Journal of Membrane Science, 371: 28–36
-
Limsawat, P., Pruksasri, S. (2010) Separation of lactose from milk by ultrafiltration. Asian Journal of Food and Agro-Industry, 3(02): 236–243.
-
Luján-Facundo, M.-J., Mendoza-Roca, J.-A., Cuartas-Uribe, B., Álvarez-Blanco, S. (2017) Membrane fouling in whey processing and subsequent cleaning with ultrasounds for a more sustainable process. Journal of Cleaner Production, 143: 804–813.
-
Molina, J., Vatai, Gy., Fogarassy, E., Bekassy-Molnar, E. (2008) Application of membrane filtration to wastewater desalination. Progress in Agricultural Engineering Sciences. 4(1): 77–92.
-
Rezvantalab, S., Bahadori, F. (2015) Natural gas refinery wastewater treatment by zeolites. Progress in Agricultural Engineering Sciences, 11(1): 1–8.
-
Schroen, K., van Dinther, A., Stockmann, R. (2017) Particle migration in laminar shear fields: A new basis for large scale separation technology? Separation and Purification Technology, 174: 372–388.
-
Takács, L., Vatai, Gy. (2006) Osmotic pressure modeling of white wine diafiltration and red wine concentration by reverse osmosis. Progress in Agricultural Engineering Sciences, 2(1): 119–132.
-
Zhenzhou, Z., Houcine, M., Wenxiang, Z., Luhui, D., Olivier, B., Michel, Y. J., Nabil, G., Eugène, V. (2016) Rotating disk-assisted cross-flow ultrafiltration of sugar beet juice. Food Bioprocess Technology, 9: 493–500.
-
www.kvvm.hu/szakmai/karmentes/kiadvanyok/karmkezikk2/2-14.htm; 2016.10.11
Monthly Content Usage
| Abstract Views | Full Text Views | PDF Downloads | |
|---|---|---|---|
| Aug 2020 | 7 | 0 | 0 |
| Sep 2020 | 3 | 0 | 0 |
| Oct 2020 | 5 | 0 | 0 |
| Nov 2020 | 3 | 4 | 0 |
| Dec 2020 | 3 | 0 | 0 |
| Jan 2021 | 1 | 1 | 1 |
| Feb 2021 | 0 | 0 | 0 |
Copyright Akadémiai Kiadó
AKJournals is the trademark of Akadémiai Kiadó's journal publishing business branch.
Copyright Akadémiai Kiadó AKJournals is the trademark of Akadémiai Kiadó's journal publishing business branch.
Powered by PubFactory