relation: https://khub.utp.edu.my/scholars/16690/
title: A Rotary Spacer System for Energy-Efficient Membrane Fouling Control in Oil/Water Emulsion Filtration
creator: Mat Nawi, N.I.
creator: Mohd Lazis, A.
creator: Rahma, A.
creator: Elma, M.
creator: Bilad, M.R.
creator: Md Nordin, N.A.H.
creator: Wirzal, M.D.H.
creator: Shamsuddin, N.
creator: Suhaimi, H.
creator: Yusof, N.
description: Membrane fouling deteriorates membrane filtration performances. Hence, mitigating membrane fouling is the key factor in sustaining the membrane process, particularly when treating fouling-prone feed, such as oil/water emulsions. The use of spacers has been expanded in the membrane module system, including for membrane fouling control. This study proposed a rotating spacer system to ameliorate membrane fouling issues when treating an oil/water emulsion. The system�s effectiveness was assessed by investigating the effect of rotating speed and membrane-to-disk gap on the hydraulic performance and the energy input and through computational fluid dynamics (CFD) simulation. The results showed that the newly developed rotary spacer system was effective and energy-efficient for fouling control. The CFD simulation results proved that the spacer rotations induced secondary flow near the membrane surface and imposed shear rate and lift force to exert fouling control. Increasing the rotation speed to an average linear velocity of 0.44 m/s increased the permeability from 126.8 ± 2.1 to 175.5 ± 2.7 Lm�2h�1bar�1 . The system showed better performance at a lower spacer-to-membrane gap, in which increasing the gap from 0.5 to 2.0 cm lowered the permeability from 175.5 ± 2.7 to 126.7 ± 2.0 Lm�2h�1bar�1 . Interestingly, the rotary system showed a low energy input of 1.08 to 4.08 � 10�3 kWhm�3 permeate when run at linear velocities of 0.27 to 0.44 ms�1 . Overall, the findings suggest the competitiveness of the rotary spacer system as a method for membrane fouling control. © 2022 by the authors. Licensee MDPI, Basel, Switzerland.
publisher: MDPI
date: 2022
type: Article
type: PeerReviewed
identifier:   Mat Nawi, N.I. and Mohd Lazis, A. and Rahma, A. and Elma, M. and Bilad, M.R. and Md Nordin, N.A.H. and Wirzal, M.D.H. and Shamsuddin, N. and Suhaimi, H. and Yusof, N.  (2022) A Rotary Spacer System for Energy-Efficient Membrane Fouling Control in Oil/Water Emulsion Filtration.  Membranes, 12 (6).   ISSN 20770375     
relation: https://www.scopus.com/inward/record.uri?eid=2-s2.0-85131348705&doi=10.3390%2fmembranes12060554&partnerID=40&md5=225ed2b5bc238b61585448570a492149
relation: 10.3390/membranes12060554
identifier: 10.3390/membranes12060554