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Title: Passage and deformation of oil drops through non-converging and converging micro-sized slotted pore membranes
Authors: Ullah, Asmat
Khan, S.W.
Shakoor, Abdul
Starov, Victor
Keywords: Passage and deformation of oil drops
Converging and non-converging slotted pore membranes
Microfiltration
Issue Date: 2013
Citation: ULLAH, A. ...et al., 2013. Passage and deformation of oil drops through non-converging and converging micro-sized slotted pore membranes. Separation and Purification Technology, 119, pp. 7-13.
Abstract: The model presented in the paper is the continuation of the previous work where a mathematical model was developed for the passage and deformation of micro-sized oil drops through a 4 μm converging slotted pore membrane. In the previous work, it was assumed that drops deform from a spherical shape to a prolate spheroid when pass through a converging slot. In the present study, it has been assumed that drops deform into an oblate spheroid while passing through a non-converging slot and a mathematical model is developed for the deformation of drops through non-converging slots. After extending the idea of static and drag forces, it is readily seen that the magnitude of static force (Fcx) for the non-converging slotted pore membrane is higher than the static force for the converging slotted pore membranes. This is because of drops deform suddenly in the non-converging slots, while, in case of converging slots, the drops deform gradually. Micro-sized oil drops of two systems with different interfacial tensions (4 and 9 mN/m) have been used in the study and it is observed that a higher interfacial tension leads to a higher rejection rate for both converging and non-converging slotted pore membranes at various in-pore filtration velocities.
Description: This paper is in closed access.
Sponsor: This work was supported by KPK (NWFP) University of Engineering and Technology Peshawar Pakistan and Higher Education Commission (HEC) Pakistan.
Version: Published
DOI: 10.1016/j.seppur.2013.08.041
URI: https://dspace.lboro.ac.uk/2134/25797
Publisher Link: http://dx.doi.org/10.1016/j.seppur.2013.08.041
ISSN: 1383-5866
Appears in Collections:Closed Access (Chemical Engineering)

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