Solubilisation of triolein by microemulsions containing C12E4/hexadecane/water: Equilibrium and dynamics

Garrett, Peter R.; Carr, Denise; Giles, Dennis; Pierre-Louis, Gina; Staples, E.; Miller, Clarence A.; Chen, Bing‐Hung

doi:10.1016/j.jcis.2008.06.014

Cited by 8 publications

(4 citation statements)

References 20 publications

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“…We have extended that work by reporting phase diagrams and IFT values in this work, which uses a single surfactant system, as well as in previous studies [23,24], which used combinations of extended surfactant and linker molecules. Other research has used different approaches such as co-oil/alcohol addition, and non-ionic surfactants at high temperature (PIT * 50°C) [18][19][20][21]. The selection of the surfactant used in this work, C 14,15 -8PO-SO 4 Na with a branched hydrocarbon tail, was guided by previous work [26][27][28][29] which revealed that a branched hydrocarbon tail in the extended surfactant structure provides lower IFT and higher solubilization.…”

Section: Resultsmentioning

confidence: 99%

“…Triglyceride-targeted microemulsions [13,[15][16][17][18][19][20][21][22][23][24][25][26][27][28][29] can produce ultralow IFT with triglyceride oils, making microemulsion-based systems an attractive alternative for vegetable oil detergency. The use of extended surfactants to form triglyceride microemulsions, first reported by Miñana-Pérez et al [17] and followed by others [23][24][25][26][27][28][29], suggested that extended surfactant can be used in vegetable oil detergency at room temperature thanks to the ultralow IFT and high solubilization resulting from the extension (polypropylene oxide (PO) groups) in the surfactant structure.…”

Section: Introductionmentioning

confidence: 99%

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Microemulsion‐Based Vegetable Oil Detergency Using an Extended Surfactant

Phan

Witthayapanyanon

Harwell

et al. 2010

J Surfact & Detergents

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This work examined the use of a single extended surfactant in the microemulsion-based detergency of vegetable oils. The results showed that good canola oil detergency ([80%) was achieved at 25°C using a single extended surfactant (C 14,15 -8PO-SO 4 Na) at concentrations as low as 125 ppm, i.e., significantly lower than the surfactant concentration range of 500-2,500 ppm reported in other microemulsion-based detergency work. It was found that the maximum detergency (95%) was achieved in the type II microemulsion region. These results demonstrate that the microemulsion-based extended surfactant formulation is a promising approach for vegetable oil detergency at low temperature.

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Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Microemulsion‐Based Vegetable Oil Detergency Using an Extended Surfactant

Phan

Witthayapanyanon

Harwell

et al. 2010

J Surfact & Detergents

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show abstract

“…The hydrocarbon chains of the fatty acids can be as long as 24 carbons [6]. Several researchers have reported triglyceride microemulsion formation using different approaches such as co-oil addition, alcohol addition, non-ionic surfactants at high temperature, and extended surfactants with linkers [13][14][15][16][17][18][19][20][21][22][23]. Among the published work on triglyceride microemulsions, the use of extended surfactant in triglyceride microemulsion [16,[22][23][24][25] has gained special interest because of the ability of extended surfactants to provide ultralow IFT and very high solubilization enhancement.…”

Section: Introductionmentioning

confidence: 99%

Effect of Extended Surfactant Structure on Interfacial Tension and Microemulsion Formation with Triglycerides

Phan

Attaphong

Sabatini

2011

J Americ Oil Chem Soc

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In this work, the impacts of extended surfactant structure (number of polypropylene oxide PO groups and branching nature of the hydrocarbon chain) on microemulsion formation and IFT values were examined with triglyceride oils. The results show that branching of the hydrocarbon tail of extended surfactants lowers optimum salinity and IFT values. The results also show that for the surfactants studied ultralow IFTs and microemulsion formation with vegetable oils can be achieved using extended surfactants with at least eight PO groups.

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“…Therefore, the spontaneous tendency to minimize the free energy of adsorption determines the ultimate contact angle. In a recent paper, 16 Garret and co-workers thoroughly examined the application of non-ionic microemulsions in the removal of triolein from knitted polyester textile, to elucidate the mechanism of solvent microemulsions. The proposed mechanism involved a combination of solubilization and emulsification phenomena.…”

Section: Characterization Of Arenite Samplesmentioning

confidence: 99%

Use of Microemulsion Systems in the Solubilization of Petroleum Heavy Fractions for the Prevention of Oil Sludge Waste Formation

Dantas¹,

Neto²,

Rossi³

et al. 2009

Energy Fuels

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In this work, we investigate the use of microemulsions in the solubilization of heavy crude oil fractions, which are responsible for the formation of deposits in petroleum processing operations. Initially, the construction of phase diagrams was addressed, with the intention of determining the area within which microemulsions are formed. Unitol L 90 was used as a non-ionic surfactant. Butan-1-ol and butan-2-ol were tested as co-surfactants. Four different systems were studied: Unitol L 90 + butan-1-ol + water + kerosene (system 1), Unitol L 90 + butan-1-ol + water + xylene (system 2), Unitol L 90 + butan-1-ol + water + 90% kerosene/10% xylene (system 3), and Unitol L 90 + butan-2-ol + water + xylene (system 4). Physical adsorption experiments were carried out with the static method, aiming to simulate natural reservoir conditions. Crude oil samples from the Fazenda Belém field (Rio Grande do Norte State, Brazil) were used and dissolved in xylene. Arenite samples from the Assu (Rio Grande do Norte State) and Botucatu (Paraná State, Brazil) geological formations were tested as rock reservoirs. The adsorption curves featured the “S” profile. The solubilization process was accomplished via the batch method, by varying the stirring time, microemulsion composition, and the solid/solution ratio. The experiments showed that the microemulsions presented high efficiency in the solubilization of crude oil adsorbed on the arenites. In particular, system 2 presented an efficiency as high as 99% when tested on the Assu arenite and 97% on the Botucatu arenite. No significant differences were detected on the extent of solubilization of heavy fractions, by varying the surfactant concentration in the formulations used in this work. Therefore, for economical reasons, it could be suggested that systems containing only 20% in active matter (surfactant plus co-surfactant) are more suitable for applications involving the use of non-ionic microemulsions on the prevention of oil sludge waste formation.

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Solubilisation of triolein by microemulsions containing C12E4/hexadecane/water: Equilibrium and dynamics

Cited by 8 publications

References 20 publications

Microemulsion‐Based Vegetable Oil Detergency Using an Extended Surfactant

Microemulsion‐Based Vegetable Oil Detergency Using an Extended Surfactant

Effect of Extended Surfactant Structure on Interfacial Tension and Microemulsion Formation with Triglycerides

Use of Microemulsion Systems in the Solubilization of Petroleum Heavy Fractions for the Prevention of Oil Sludge Waste Formation

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