Results 211 to 220 of about 10,921 (256)

Prediction of permeate flux and permeate concentration in nanofiltration of dye solution

Separation and Purification Technology, 2004
Abstract Unstirred batch and cross flow nanofiltration have been carried out to separate dye from aqueous solution. The effect of different process parameters on separation of dye is studied. Experiments are conducted with aqueous solution of crystal violet (CV, molecular weight 408) using a 400 molecular weight cut-off membrane.
Sudipto Chakraborty
exaly   +2 more sources

Permeate Flux in Crossflow Ultrafiltration under Intermediate Pressures

Journal of Colloid and Interface Science, 1999
The intermediate pressure range stands for an important condition for ultrafiltration operations where permeate flux falls below that predicted from a linear flux-pressure relationship but does not reach the limiting flux. Optimal performance of ultrafiltration might be achieved on the upper end of the intermediate pressure range because the maximum ...
Lianfa Song
exaly   +4 more sources

Effects of ozonation on the permeate flux of nanocrystalline ceramic membranes

Water Research, 2005
Titania membranes, with a molecular weight cut-off of 15 kD were used in an ozonation/membrane system that was fed with water from Lake Lansing, which had been pre-filtered through a 0.45 microm glass fiber filter. The application of ozone gas prior to filtration resulted in significant decreases in membrane fouling.
Susan Masten
exaly   +3 more sources

Decline of permeate flux for ultrafiltration along membrane tubes

Desalination, 2002
The decline of permeate flux for ultrafiltration along membrane tubes was predicted from mass and momentum balances, based on the resistance-in-series model coupled with the considerations of the declinations of flow rate and transmembrane pressure along the membrane tubes.
Ho-Ming Yeh
exaly   +2 more sources

Unsteady-State Permeate Flux of Crossflow Microfiltration

Separation Science and Technology, 1994
Abstract In this study a membrane filtration cell was installed to investigate the variation of permeate flux with filtration time under various operating conditions including crossflow velocity, pressure drop, particle concentration, membrane pore size, particle size, pH, and electrolyte concentration.
DONG-JANG CHANG, SHYH-JYE HWANG
openaire   +1 more source

Permeate flux prediction

2021
In any membrane filtration, the prediction of permeate flux is critical to calculate the membrane surface required, which is an essential parameter for scaling-up, equipment sizing, and cost determination. Permeate flux prediction is an essential parameter in membrane performance evaluation and the projections for scaling-up from laboratory to the ...
A Cassano, E Troncoso, C Quezada Barcenas, H Estay, R RubyFigueroa   +4 more
openaire   +1 more source

Pressure-Dependent Permeate Flux in Ultra- and Microfiltration

Journal of Environmental Engineering, 2000
The effect of applied pressure on the permeate flux in cross-flow ultrafiltration (UF) and microfiltration (MF) was investigated both theoretically and experimentally. In UF and MF processes, the permeate fluxes are controlled by concentration polarization and cake formation over the membrane surface.
Miaomiao Zhang, Lianfa Song
openaire   +1 more source

Improving permeation flux by pulsed reverse osmosis

Chemical Engineering Science, 1974
Abstract Pulsed and nonpulsed reverse osmosis experiments were conducted with a sucrose solution in cylindrical cellulose acetate membranes. For pulsing frequencies up to 1 Hz, permeation increases of more than 70 per cent were observed. A simple quasisteady-state theory for concentration polarization based on a film model of mass transfer describes ...
T.J. Kennedy, R.L. Merson, B.J. McCoy
openaire   +1 more source

Explicit expressions for permeate flux and concentration in hyperfiltration

Chemical Engineering Science, 1986
Developpement d'une methode explicite valable dans tout le domaine de rejet (0-100%), en utilisant un modele a trois ...
openaire   +1 more source

Seawater ultrafiltration: role of particles on organic rejections and permeate fluxes

Environmental Technology, 2013
The role of natural compounds of seawater and added particles on mechanisms of membrane fouling and organic matter rejection has been investigated. Ultrafiltration (100 kDa) has been conducted in both dead-end (out/in) and tangential (in/out) modes on polysulfone hollow fibre membranes.
Massé, Anthony, Thi, Hanh Nguyen, Roelens, Guillaume, Legentilhomme, Patrick, Jaouen, Pascal   +4 more
openaire   +3 more sources