Prediction of microemulsion phase behavior from surfactant and co-solvent structures

Chang, Leonard; Pope, Gary A.; Jang, Sung Hyun; Tagavifar, Mohsen

doi:10.1016/j.fuel.2018.09.151

Cited by 47 publications

(11 citation statements)

References 49 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…It is worth noting that research group from UT Austin prominently cited (Solairaj et al, ) our SAD/HLD equation to add to it the PON term as a complement to the first correlation. A very complex equation was recently proposed in a similar way with a large number of new variables (Chang et al, ), but the corresponding data indicated an extreme inaccuracy, far away from the 0.2 unit precision in HLD (Salager et al, ), which has been recommended in the past 20 years and has recently been explained in detail (Salager et al, ).…”

Section: Physicochemical Properties Of Extended Surfactantsmentioning

confidence: 99%

Extended Surfactants Including an Alkoxylated Central Part Intermediate Producing a Gradual Polarity Transition—A Review of the Properties Used in Applications Such as Enhanced Oil Recovery and Polar Oil Solubilization in Microemulsions

Salager

Forgiarini

Márquez

2019

J Surfact & Detergents

View full text Add to dashboard Cite

The research published in the past half century indicates that surfactant interfacial performance in producing low tension or high solubilization with polar oils is not generally attained with pure conventional species exhibiting well‐defined polar and nonpolar parts. The improvement trends reached with surfactant mixtures as well as the introduction of additives like cosurfactants and linkers lead to the introduction of the so‐called extended surfactants, whose structure includes an intermediate polarity spacer between the hydrophilic head and the lipophilic tail. Recent investigations on different kinds of surfactants in a variety of applications—such as detergency, cosmetics, enhanced oil recovery or crude demulsifying, and vegetable oil extraction—indicate that these extended surfactants are likely to be particularly performing with oils containing polar groups, such as triacylglycerols and asphaltenic crudes. Possible applications of extended surfactants in enhanced oil recovery, crude emulsion breaking, detergency and cleaning, medicine and cosmetics vehicles, and natural oil extraction as well as some other cases are quickly reviewed.

show abstract

Section: Physicochemical Properties Of Extended Surfactantsmentioning

confidence: 99%

Extended Surfactants Including an Alkoxylated Central Part Intermediate Producing a Gradual Polarity Transition—A Review of the Properties Used in Applications Such as Enhanced Oil Recovery and Polar Oil Solubilization in Microemulsions

Salager

Forgiarini

Márquez

2019

J Surfact & Detergents

View full text Add to dashboard Cite

show abstract

“…Usually, microemulsions comprise two immiscible liquids and a mixture of surfactant and cosurfactant. High amounts of surfactant and cosurfactant provide an enormous reduction in interfacial tension, 6 enabling a large interface and supporting the spontaneous formation of microemulsions. The low interfacial tension ensures excellent surface contact between the skin and the microemulsion and facilitates further skin penetration.…”

Section: Introductionmentioning

confidence: 99%

Static and dynamic properties of decane/water microemulsions stabilized by cetylpyridinium chloride cationic surfactant and octanol cosurfactant

et al. 2020

View full text Add to dashboard Cite

show abstract

“…where σ represents the interfacial tension (mN/m) and σ opt is the water or oil solubilization ratio determined at the optimum salinity. The criterion of the solubilization ratio at the optimum salinity is higher or equal to 10 mL/mL, in order to accomplish the desired ultralow interfacial tension, i.e., when the oil solubilization ratio is 10 mL/mL, the interfacial tension is 0.003 mN/m [2,13,19].…”

Section: Methodsmentioning

confidence: 99%

“…The amounts of the surfactant and the alkali had insignificant influences on the solubilization ratios as well as the optimum salinity. The surfactant went to the micellar interface, whereas the co-solvent partitioned the oil and brine interface so that the co-solvent at the interface influenced efficiently the microemulsion phases [19]. DGBE had a higher molecular weight and the aqueous stability limits compared to IBA, which can yield a higher solubilization ratio [13,21].…”

Section: Optimal Asp Formulation and Polymer Concentrationmentioning

confidence: 99%

Optimal Design of Alkaline–Surfactant–Polymer Flooding under Low Salinity Environment

et al. 2020

View full text Add to dashboard Cite

This paper presents an optimal design of alkaline–surfactant–polymer (ASP) flooding and an experimental analysis on the effects of ASP components under low formation salinity, where the assignment of salinity gradients and various phase types are limited. The phase behavior and coreflooding tests confirmed the ASP formula is optimal, i.e., 1 wt % sodium carbonate (Na2CO3) as the alkaline, 1:4 weight ratio for linear alkylbenzene sulfonate (LAS) and dioctyl sulfosuccinate (DOSS) as a surfactant, 5 wt % diethylene glycol monobutyl ether (DGBE) as a co-solvent, and hydrolyzed polyacrylamide (HPAM) as a polymer. The salinity scan was used to determine that the optimum salinity was around 1.25 wt % NaCl and its solubilization ratio was favorable, i.e., approximately 21 mL/mL. The filtration ratio determines the polymer concentrations, i.e., 3000 or 3300 mg/L, with a reduced risk of plugging through pore throats. The coreflooding test confirmed the field applicability of the proposed ASP formula with an 86.2% recovery rate of residual oil after extensive waterflooding. The optimal design for ASP flooding successfully generated phase types through the modification of salinity and can be applicable to the low-salinity environment.

show abstract

Prediction of microemulsion phase behavior from surfactant and co-solvent structures

Cited by 47 publications

References 49 publications

Extended Surfactants Including an Alkoxylated Central Part Intermediate Producing a Gradual Polarity Transition—A Review of the Properties Used in Applications Such as Enhanced Oil Recovery and Polar Oil Solubilization in Microemulsions

Extended Surfactants Including an Alkoxylated Central Part Intermediate Producing a Gradual Polarity Transition—A Review of the Properties Used in Applications Such as Enhanced Oil Recovery and Polar Oil Solubilization in Microemulsions

Static and dynamic properties of decane/water microemulsions stabilized by cetylpyridinium chloride cationic surfactant and octanol cosurfactant

Optimal Design of Alkaline–Surfactant–Polymer Flooding under Low Salinity Environment

Contact Info

Product

Resources

About