Micellar enhanced ultrafiltration to remove traces of petroleum oil from oil field brine

Use of pluronic triblock copolymer micelles

Research output: Contribution to journalArticle

2 Citations (Scopus)

Abstract

The ultrafiltration characteristics of surfactant (Triton X-100)-oil field brine with a cellulosic membrane were analyzed. Triton X-100 permeate concentration was found to be invariant with ultrafiltration time and remained below or close to the surfactant critical micelle concentration (cmc), suggesting a permeate free of micelles. With an increase of the surfactant feed concentration, the permeate surfactant composition also remained unchanged (~1.7 × 10-4M) at a surfactant feed concentration of 5 x cmc and 10 x cmc and was slightly above the cmc (2.4 × 10-4M) at a feed concentration 50 times the cmc. This indicates that micelles are completely rejected, which is desirable in micellar enhanced ultrafiltration (MEUF) applications. The removal of traces of petroleum oil from oil field brine by MEUF was examined. Excellent oil rejection (∼99.5%) were achieved in the seldom-explored surfactant concentration regime around the cmc. Unexpected oil rejection (99.6%) was observed at surfactant concentrations moderately below the cmc (0.7 × cmc). This was attributed to concentration polarization that results in a build-up of surfactant molecules at the solution-membrane interface where micelles are present. These high oil rejections were achieved with an extremely low surfactant feed concentration (∼0.34 mg/L), making the MEUF process economically and environmentally viable.

Original languageEnglish
Pages (from-to)203-212
Number of pages10
JournalJournal of Dispersion Science and Technology
Volume24
Issue number2
DOIs
Publication statusPublished - Mar 2003

Fingerprint

Poloxamer
oil fields
Petroleum
Micelles
Ultrafiltration
Oil fields
Critical micelle concentration
crude oil
Surface-Active Agents
Block copolymers
micelles
copolymers
Oils
Surface active agents
Crude oil
oils
surfactants
Octoxynol
rejection
Membranes

ASJC Scopus subject areas

  • Physical and Theoretical Chemistry

Cite this

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title = "Micellar enhanced ultrafiltration to remove traces of petroleum oil from oil field brine: Use of pluronic triblock copolymer micelles",
abstract = "The ultrafiltration characteristics of surfactant (Triton X-100)-oil field brine with a cellulosic membrane were analyzed. Triton X-100 permeate concentration was found to be invariant with ultrafiltration time and remained below or close to the surfactant critical micelle concentration (cmc), suggesting a permeate free of micelles. With an increase of the surfactant feed concentration, the permeate surfactant composition also remained unchanged (~1.7 × 10-4M) at a surfactant feed concentration of 5 x cmc and 10 x cmc and was slightly above the cmc (2.4 × 10-4M) at a feed concentration 50 times the cmc. This indicates that micelles are completely rejected, which is desirable in micellar enhanced ultrafiltration (MEUF) applications. The removal of traces of petroleum oil from oil field brine by MEUF was examined. Excellent oil rejection (∼99.5{\%}) were achieved in the seldom-explored surfactant concentration regime around the cmc. Unexpected oil rejection (99.6{\%}) was observed at surfactant concentrations moderately below the cmc (0.7 × cmc). This was attributed to concentration polarization that results in a build-up of surfactant molecules at the solution-membrane interface where micelles are present. These high oil rejections were achieved with an extremely low surfactant feed concentration (∼0.34 mg/L), making the MEUF process economically and environmentally viable.",
author = "Mohammed Aoudia and Najla Al-Lawatia and Salma Al-Kindy and Suliman, {Fakhr Eldin O}",
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T1 - Micellar enhanced ultrafiltration to remove traces of petroleum oil from oil field brine

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AU - Suliman, Fakhr Eldin O

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AB - The ultrafiltration characteristics of surfactant (Triton X-100)-oil field brine with a cellulosic membrane were analyzed. Triton X-100 permeate concentration was found to be invariant with ultrafiltration time and remained below or close to the surfactant critical micelle concentration (cmc), suggesting a permeate free of micelles. With an increase of the surfactant feed concentration, the permeate surfactant composition also remained unchanged (~1.7 × 10-4M) at a surfactant feed concentration of 5 x cmc and 10 x cmc and was slightly above the cmc (2.4 × 10-4M) at a feed concentration 50 times the cmc. This indicates that micelles are completely rejected, which is desirable in micellar enhanced ultrafiltration (MEUF) applications. The removal of traces of petroleum oil from oil field brine by MEUF was examined. Excellent oil rejection (∼99.5%) were achieved in the seldom-explored surfactant concentration regime around the cmc. Unexpected oil rejection (99.6%) was observed at surfactant concentrations moderately below the cmc (0.7 × cmc). This was attributed to concentration polarization that results in a build-up of surfactant molecules at the solution-membrane interface where micelles are present. These high oil rejections were achieved with an extremely low surfactant feed concentration (∼0.34 mg/L), making the MEUF process economically and environmentally viable.

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