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Please use this identifier to cite or link to this item: http://hdl.handle.net/10481/32055

Title: About merging threshold and critical fux concepts into a single one: the boundary flux
Authors: Stoller, Marco
Ochando-Pulido, Javier Miguel
Issue Date: 2014
Abstract: In the last decades much effort was put in understanding fouling phenomena on membranes. One successful approach to describe fouling issues on membranes is the critical flux theory. The possibility to measure a maximum value of the permeate flux for a given system without incurring in fouling issues was a breakthrough in membrane process design. However, in many cases critical fluxes were found to be very low, lower than the economic feasibility of the process. The knowledge of the critical flux value must be therefore considered as a good starting point for process design. In the last years, a new concept was introduced, the threshold flux, which defines the maximum permeate flow rate characterized by a low constant fouling rate regime. This concept, more than the critical flux, is a new practical tool for membrane process designers. In this paper a brief review on critical and threshold flux will be reported and analyzed. And since the concepts share many common aspects, merged into a new concept, called the boundary flux, the validation will occur by the analysis of previously collected data by the authors, during the treatment of olive vegetation wastewater by ultrafiltration and nanofiltration membranes.
Publisher: Hindawi Publishing Corporation
Keywords: Waste water
Batch membrane processes
Pretreatment process
Optimization
Ultrafiltration
Microfiltration
Fractionation
Polyphenols
Performance
Recovery
URI: http://hdl.handle.net/10481/32055
ISSN: 1537-744X
Citation: Stoller, M.; Ochando-Pulido, J.M. About merging threshold and critical fux concepts into a single one: the boundary flux. Scientific World Journal, 2014: 656101 (2014). [http://hdl.handle.net/10481/32055]
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