Use this URL to cite or link to this record in EThOS: http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.485536
Title: Effects of turbulence promoter geometry on flux sustainability and membrane efficiency
Author: Ogunbiyi, Oluwaseun
ISNI:       0000 0001 3455 4755
Awarding Body: University of Nottingham
Current Institution: University of Nottingham
Date of Award: 2007
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Abstract:
The efficiency of membrane processes is very important to the profitability of organisations and the issue of membrane fouling, flux optimisation and selectivity and dependability are some of the drawbacks in membrane processes. Flux and selectivity problems usually arise as an increase in flux is usually followed by a decrease in the selectivity of the membrane, which is the degree of separation of contaminants. Laboratory assessments of membranes are required prior to a process application on an industrial scale to justify the nature of the membrane under certain conditions. Membrane fouling causes a decline in membrane efficiency and flux sustainability, in which performance is very high initially but then declines drastically as foulants accumulate on the membrane sUrface and ultimately within the pores. The use of turbulence promoters has been investigated in this study and its effects on flux sustainability are presented. The approach was to test two feed suspensions and determine the effects of the promoters on both systems. Regeneration methods were also used for the fouled membranes in order to re-use them for subsequent experiments. An experimental rig has been modified to house ceramic tubular membranes to monitor the filtration performance of the membranes. A literature review detailing the methods employed to control membrane fouling can be found in Chapter 2 of this thesis. The effects of operating parameters including system pressures, feed temperature, feed concentration and feed flow-rate were investigated to determine fouling effects over time. Artificial neural networks have also been utilised to correctly validate the existing experimental results generated from experimental work.
Supervisor: Not available Sponsor: Not available
Qualification Name: University of Nottingham, 2007 Qualification Level: Doctoral
EThOS ID: uk.bl.ethos.485536  DOI: Not available
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