Results 31 to 40 of about 57,296 (304)

Low fouling conditions in dead-end filtration: Evidence for a critical filtered volume and interpretation using critical osmotic pressure [PDF]

open access: yes, 2005
This paper presents experiments showing the existence of a critical filtered volume (CFV) when operating colloid dead-end filtration. The CFV is here defined as the filtered volume below which there is no irreversible (with respect to a break in the ...
Abidine, Nouhad   +2 more
core   +2 more sources

Clarification of sour orange juice by ultrafiltration: Optimization of permeate flux and fouling resistances using response surface methodology [PDF]

open access: yesمجله پژوهش‌های علوم و صنایع غذایی ایران, 2016
The turbidity of sour orange juice after juice extraction affects on quality, shelf-life and concentration of juice. Therefore, juice clarification is an important operation in the fruit processing industry.
محمدمهدی سیدآبادی   +1 more
doaj   +1 more source

Simulation and Experimental Investigation of the Vacuum-Enhanced Direct Membrane Distillation Driven by a Low-Grade Heat Source

open access: yesMembranes, 2022
Vacuum-enhanced direct contact membrane distillation (VEDCMD) has been proven experimentally to improve the permeate flux, compared with direct contact membrane distillation (DCMD).
Qingfen Ma   +8 more
doaj   +1 more source

Numerical simulation of colloidal dispersion filtration: description of critical flux and comparison with experimental results [PDF]

open access: yes, 2005
During filtration via membrane processes, colloids accumulate at the porous surface leading to fouling phenomena. In this study, a rigorous simulation of momentum and mass transfer using CFD modelling has been developed to describe such an accumulation ...
Bacchin   +16 more
core   +4 more sources

Single and binary protein electroultrafiltration using poly(vinyl-alcohol)-carbon nanotube (PVA-CNT) composite membranes. [PDF]

open access: yes, 2020
Electrically conductive composite ultrafiltration membranes composed of carbon nanotubes have exhibited efficient fouling inhibition in wastewater treatment applications. In the current study, poly(vinyl-alcohol)-carbon nanotube membranes were applied to
Gee, Terence   +5 more
core   +3 more sources

Transient permeate flux analysis: model validation

open access: yesWater Supply, 2001
An extended model integrating several particle back-transport theories has been proposed by Sethi and Wiesner to predict transient permeate flux as a function of operational parameters for constant permeate flux (CF) and constant transmembrane pressure (CP) cross-flow regimes.
M.R. Wiesner, R. Hovinga, V. Tarabara
openaire   +1 more source

Direct Contact Membrane Distillation for Separation of Hcl From A Mixture of Acids

open access: yesJournal of Engineering, 2018
HCl is separated from HCl –H2SO4  solution by membrane distillation process(MD). The flat –sheet membranes made from polyvinylidene fluoride (PVDF) and polypropylene (pp.). Plate and frame these types of membrane where used in the process.
Assrar Abdullah Hassan, Hala Adel Jabbar
doaj   +1 more source

Using the Log Mean Temperature Difference (LMTD) and ε-NTU Methods to Analyze Heat and Mass Transfer in Direct Contact Membrane Distillation

open access: yesMembranes, 2023
In direct contact membrane distillation (DCMD), heat and mass transfers occur through the porous membrane. Any model developed for the DCMD process should therefore be able to describe the mass transport mechanism through the membrane, the temperature ...
Mohammed A. Almeshaal, Karim Choubani
doaj   +1 more source

Ultrafiltration to Increase the Consistency of Fruit Pulps: The Role of Permeate Flux

open access: yesChemEngineering, 2023
Ultrafiltration is a well-known operation, widely used in food processing, especially to concentrate selectively liquid compounds. However, so far, it has been mainly used to change concentration and/or clarify liquids with low viscosity. Ultrafiltration
Fulvia Chiampo
doaj   +1 more source

Integrally skinned polysulfone hollow fiber membranes for pervaporation [PDF]

open access: yes, 1994
From polysulfone as polymer, integrally skinned hollow fiber membranes with a defect-free top layer have been spun. The spinning process described here differs from the traditional dry-wet spinning process where the fiber enters the coagulation bath ...
Koops, G.H.   +5 more
core   +2 more sources

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