The impact of mechanical shear on membrane flux and energy demand
| Author | Zsirai, T. |
| Author | Qiblawey, H. |
| Author | A-Marri, M. J. |
| Author | Judd, S. |
| Available date | 2021-06-07T09:59:13Z |
| Publication Date | 2016 |
| Publication Name | Journal of Membrane Science |
| Resource | Scopus |
| Abstract | The use of forced mechanical shear for both disc membranes (rotating and vibrating disc filtration, RDF and VDF respectively) and hollow fibres (vibrating HF membranes, VHFM) is reviewed. These systems have been extensively studied and, in the case of the disc membranes, have reached commercialisation and proven effective in achieving transmembrane pressure (TMP) control for various challenging feed waters.The effects of operating conditions, namely shear rate as enhanced by rotation and vibration speed and TMP, and feed water quality on the filtration flux and specific energy consumption are quantified as part of the review. A new relationship is revealed between the two empirical constants governing the classical relationship between membrane flux and shear rate, and a mathematical correlation proposed accordingly. A study of available information on energy reveals that operation at lower shear rates (i.e. rotation or vibration speeds) and more conservative fluxes leads to lower specific energy demands in kWh m-3 permeate, albeit with a larger required membrane area. |
| Sponsor | This work was made possible by the support of a National Priorities Research Programme (NPRP) grant from the Qatar National Research Fund ( QNRF ), grant reference number NPRP8-1115-2-473 . |
| Language | en |
| Publisher | Elsevier B.V. |
| Subject | Disks (machine components) Energy management Energy utilization Filtration Membranes Rate constants Shear deformation Shear flow Thermomechanical pulping process Water filtration Water quality Hollow fibre Mechanical shear Rotating membrane Specific energy Vibrating membranes Microfiltration bentonite bovine serum albumin calcium carbonate kaolin linseed oil biomass clay energy hollow fiber membrane mechanical torsion membrane filter membrane reactor membrane technology membrane transport milk nonhuman pressure priority journal Review rotating disc filter rotating flat sheet membrane Saccharomyces cerevisiae sewage shear rate sludge soybean milk vibrating disc filter vibrating hollow fiber membrane vibration waste component removal yeast cell |
| Type | Article Review |
| Pagination | 56-63 |
| Volume Number | 516 |
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