Ultrafiltration of oily emulsion for metal cutting fluid: Role of feed temperature

Xianguo Hu, E. Békássy-Molnár, G. Vatai, Andras Koris

Research output: Article

3 Citations (Scopus)

Abstract

The oil-in-water emulsions as industrial wastewaters are produced in a large amount in the metal working, food producing and other industrial branches. Separation of oil from water, both being the phases of emulsion, is economically realizable by membrane techniques. There are so many membrane operation factors which influence the permeate flux, such as transmembrane pressure, feed concentration, feed temperature, design of How route and so on, besides membrane material compositions. This article describes the results of water removal from oil-in-water emulsion by different ultrafiltration membranes at variable temperatures. The experimental results show that the effect of feed temperature on the permeate flux depends on the variations of membrane property (including membrane material and MWCO), concentration of feed emulsion and transmembrane pressure. Based on the relationship between the gel resistance and the feed temperature it was found that the gel resistance decreased with temperature. The concentration polarization of PES (polyethersulfone) membrane is higher than that of PVDF (polyvinylidene fluoride) membrane. At higher emulsion concentration the concentration polarization becomes very serious. In our experimental conditions, the enhancement effect of the temperature on the permeate flux at higher emulsion concentration is better than that of lower emulsion concentration. Some models of the effects of feed temperature on permeate flux variation were presented and analyzed based on the experimental data. In addition, the COD values and oil concentrations in the permeate were analyzed at different temperatures.

Original languageEnglish
Pages (from-to)109-118
Number of pages10
JournalEnvironment Protection Engineering
Volume31
Issue number3-4
Publication statusPublished - 2005

Fingerprint

Cutting fluids
Metal cutting
Ultrafiltration
emulsion
ultrafiltration
Emulsions
membrane
Membranes
fluid
metal
temperature
Fluxes
Temperature
oil
Water
Gels
polarization
gel
Polarization
Metal working

ASJC Scopus subject areas

  • Waste Management and Disposal
  • Pollution
  • Environmental Engineering

Cite this

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title = "Ultrafiltration of oily emulsion for metal cutting fluid: Role of feed temperature",
abstract = "The oil-in-water emulsions as industrial wastewaters are produced in a large amount in the metal working, food producing and other industrial branches. Separation of oil from water, both being the phases of emulsion, is economically realizable by membrane techniques. There are so many membrane operation factors which influence the permeate flux, such as transmembrane pressure, feed concentration, feed temperature, design of How route and so on, besides membrane material compositions. This article describes the results of water removal from oil-in-water emulsion by different ultrafiltration membranes at variable temperatures. The experimental results show that the effect of feed temperature on the permeate flux depends on the variations of membrane property (including membrane material and MWCO), concentration of feed emulsion and transmembrane pressure. Based on the relationship between the gel resistance and the feed temperature it was found that the gel resistance decreased with temperature. The concentration polarization of PES (polyethersulfone) membrane is higher than that of PVDF (polyvinylidene fluoride) membrane. At higher emulsion concentration the concentration polarization becomes very serious. In our experimental conditions, the enhancement effect of the temperature on the permeate flux at higher emulsion concentration is better than that of lower emulsion concentration. Some models of the effects of feed temperature on permeate flux variation were presented and analyzed based on the experimental data. In addition, the COD values and oil concentrations in the permeate were analyzed at different temperatures.",
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author = "Xianguo Hu and E. B{\'e}k{\'a}ssy-Moln{\'a}r and G. Vatai and Andras Koris",
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TY - JOUR

T1 - Ultrafiltration of oily emulsion for metal cutting fluid

T2 - Role of feed temperature

AU - Hu, Xianguo

AU - Békássy-Molnár, E.

AU - Vatai, G.

AU - Koris, Andras

PY - 2005

Y1 - 2005

N2 - The oil-in-water emulsions as industrial wastewaters are produced in a large amount in the metal working, food producing and other industrial branches. Separation of oil from water, both being the phases of emulsion, is economically realizable by membrane techniques. There are so many membrane operation factors which influence the permeate flux, such as transmembrane pressure, feed concentration, feed temperature, design of How route and so on, besides membrane material compositions. This article describes the results of water removal from oil-in-water emulsion by different ultrafiltration membranes at variable temperatures. The experimental results show that the effect of feed temperature on the permeate flux depends on the variations of membrane property (including membrane material and MWCO), concentration of feed emulsion and transmembrane pressure. Based on the relationship between the gel resistance and the feed temperature it was found that the gel resistance decreased with temperature. The concentration polarization of PES (polyethersulfone) membrane is higher than that of PVDF (polyvinylidene fluoride) membrane. At higher emulsion concentration the concentration polarization becomes very serious. In our experimental conditions, the enhancement effect of the temperature on the permeate flux at higher emulsion concentration is better than that of lower emulsion concentration. Some models of the effects of feed temperature on permeate flux variation were presented and analyzed based on the experimental data. In addition, the COD values and oil concentrations in the permeate were analyzed at different temperatures.

AB - The oil-in-water emulsions as industrial wastewaters are produced in a large amount in the metal working, food producing and other industrial branches. Separation of oil from water, both being the phases of emulsion, is economically realizable by membrane techniques. There are so many membrane operation factors which influence the permeate flux, such as transmembrane pressure, feed concentration, feed temperature, design of How route and so on, besides membrane material compositions. This article describes the results of water removal from oil-in-water emulsion by different ultrafiltration membranes at variable temperatures. The experimental results show that the effect of feed temperature on the permeate flux depends on the variations of membrane property (including membrane material and MWCO), concentration of feed emulsion and transmembrane pressure. Based on the relationship between the gel resistance and the feed temperature it was found that the gel resistance decreased with temperature. The concentration polarization of PES (polyethersulfone) membrane is higher than that of PVDF (polyvinylidene fluoride) membrane. At higher emulsion concentration the concentration polarization becomes very serious. In our experimental conditions, the enhancement effect of the temperature on the permeate flux at higher emulsion concentration is better than that of lower emulsion concentration. Some models of the effects of feed temperature on permeate flux variation were presented and analyzed based on the experimental data. In addition, the COD values and oil concentrations in the permeate were analyzed at different temperatures.

KW - Feed temperature

KW - Oily emulsion

KW - Ultrafiltration

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