About Merging Threshold and Critical Flux Concepts into a Single One: The Boundary Flux
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...
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| Format: | Article |
| Language: | English |
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Wiley
2014-01-01
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| Series: | The Scientific World Journal |
| Online Access: | http://dx.doi.org/10.1155/2014/656101 |
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| author | Marco Stoller Javier M. Ochando-Pulido |
| author_facet | Marco Stoller Javier M. Ochando-Pulido |
| author_sort | Marco Stoller |
| collection | DOAJ |
| description | 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. |
| format | Article |
| id | doaj-art-02a575e033714ef88efa0e222232eb62 |
| institution | Kabale University |
| issn | 2356-6140 1537-744X |
| language | English |
| publishDate | 2014-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | The Scientific World Journal |
| spelling | doaj-art-02a575e033714ef88efa0e222232eb622025-02-03T07:25:00ZengWileyThe Scientific World Journal2356-61401537-744X2014-01-01201410.1155/2014/656101656101About Merging Threshold and Critical Flux Concepts into a Single One: The Boundary FluxMarco Stoller0Javier M. Ochando-Pulido1Department of Chemical Materials Environmental Engineering, University of Rome “La Sapienza”, Via Eudossiana 18, 00184 Rome, ItalyChemical Engineering Department, University of Granada, 18071 Granada, SpainIn 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.http://dx.doi.org/10.1155/2014/656101 |
| spellingShingle | Marco Stoller Javier M. Ochando-Pulido About Merging Threshold and Critical Flux Concepts into a Single One: The Boundary Flux The Scientific World Journal |
| title | About Merging Threshold and Critical Flux Concepts into a Single One: The Boundary Flux |
| title_full | About Merging Threshold and Critical Flux Concepts into a Single One: The Boundary Flux |
| title_fullStr | About Merging Threshold and Critical Flux Concepts into a Single One: The Boundary Flux |
| title_full_unstemmed | About Merging Threshold and Critical Flux Concepts into a Single One: The Boundary Flux |
| title_short | About Merging Threshold and Critical Flux Concepts into a Single One: The Boundary Flux |
| title_sort | about merging threshold and critical flux concepts into a single one the boundary flux |
| url | http://dx.doi.org/10.1155/2014/656101 |
| work_keys_str_mv | AT marcostoller aboutmergingthresholdandcriticalfluxconceptsintoasingleonetheboundaryflux AT javiermochandopulido aboutmergingthresholdandcriticalfluxconceptsintoasingleonetheboundaryflux |