Predicting microemulsion phase behavior using physics based HLD-NAC equation of state for surfactant flooding

Jin, Luchao; Budhathoki, Mahesh; Jamili, Ahmad; Li, Zhitao; Luo, Haishan; Shiau, Bor-Jier; Delshad, Mojdeh; Harwell, Jeffrey H.

doi:10.1016/j.petrol.2016.12.035

Cited by 32 publications

(30 citation statements)

References 44 publications

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“…The only problem is that there are discrepancies about the values of the characteristic parameters, which have been called differently, i.e., Cc for characteristic curvature (Acosta et al, ) although it has not inverse length unit, as remarked elsewhere (Abbott, ) in an encyclopedia book, where it is called Cc simply for C haracteristi c . This imprecision of the characteristic parameter is probably due to the approximation of the k slope and to some inaccurate extrapolations to estimate the pure surfactant value with products coming from different manufacturers, which might not use the same synthesis method (Budhathoki et al, , b; Jin et al, ; Witthayapanyanon et al, ). More data are required to fine tune the estimation of characteristic parameters.…”

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

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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.

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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

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“…Many researchers have demonstrated the use of the HLD concept as a guideline for microemulsion formulations. It has been used in various applications, such as oil and gas recovery (Jin et al, 2017; Nguyen et al, 2019; Wang et al, 2019), detergents (Do et al, 2015), soil washing (Arpornpong et al, 2018), dispersants (Rongsayamanont et al, 2017), and pharmaceutical products (Salager et al, 2020). Recently, mixtures of surfactants ( e.g ., anionic‐anionic or nonionic‐anionic mixtures) have been widely used in various applications due to their synergistic effects.…”

Section: Hld Equation For Predicting Optimum Formulationsmentioning

confidence: 99%

Application of Hydrophilic–Lipophilic Deviation Equations to the Formulation of a Mixed‐Surfactant Washing Agent for Crude Rice Bran Oil Removal from Spent Bleaching Earth

Panumonwatee

Charoensaeng

Arpornpong

2021

J Surfact & Detergents

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In Thailand, spent bleaching earth (SBE) (20–40 wt.% remaining oil), an industrial waste from edible oil refineries, has usually been disposed of by improper landfilling at industrial sites. This study aims to formulate microemulsion‐based washing solutions from mixed surfactants for cleaning SBE contaminated with crude rice bran oil using the hydrophilic–lipophilic deviation (HLD) concept. Binary nonionic‐anionic surfactant mixtures consisting of System A (Dehydol LS3TH‐Levenol WX), System B (Dehydol LS5TH‐Levenol WX), and System C (Dehydol LS7TH‐Levenol WX) were formulated for use as microemulsion‐based washing formulations. A HLDmixed equation extended with the excess free energy term (GEX/RT) was developed and proposed for predicting the optimum salinity. The optimum salinities obtained from the HLDmixed equation were close to those obtained from the phase behavior. In the SBE washing study, the mixed‐surfactant systems showed a washing efficiency of 90% with low surfactant adsorption capacity on bleaching earth (qmax = 0.01–0.03 mol g−1). The mixed surfactants showed improved washing performance compared to that of the single‐surfactant system. This work highlights the utility of using the HLD concept in designing microemulsion‐based washing formulations from surfactants for the removal of vegetable oil from SBE.

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“…b, k and are constant parameters, depending on the nature of the system's materials 13 , 14 . According to HLD values, four types of phase behaviors named Winsor I, II, III, and IV are observable in SOW systems 15 , 16 . Winsor III of microemulsion systems is the optimal zone for demulsification, where the HLD value is nearly zero 17 .…”

Section: Introductionmentioning

confidence: 99%

“…In addition, IFT and system stability reach their lowest values within Winsor III. It can be said that HLD plays a significant role in characterizing the phase behavior of SOW systems 15 . For example, the Phase Inversion Point (PIP), which happens at HLD = 0, provides important information for the formulation of SOW systems, such as addressing some issues about the self-assembly processes in pharmaceutical applications or choosing an appropriate demulsifier for a system of interest.…”

Section: Introductionmentioning

confidence: 99%

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Design of industrial wastewater demulsifier by HLD-NAC model

Ghasemi

Eslami

2021

Sci Rep

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The chemical method is one of the treatment techniques for the separation of oil–water emulsion systems. The selection of appropriate demulsifiers for each emulsion system is the most challenging issue. Hydrophilic-lipophilic-deviation (HLD) is a powerful semi-empirical model, providing predictive tools to formulate the emulsion and microemulsion systems. This work aims to apply HLD to obtain an optimal condition for demulsification of oil-in-water emulsion system—real industrial wastewater—with different water in oil ratios (WOR). Therefore, the oil parameter of the contaminant oil and surfactant parameter for three types of commercial surfactants were calculated by performing salinity scans. Furthermore, the net-average-curvature (NAC) framework coupled with HLD was used to predict the phase behavior of the synthetic microemulsion systems, incorporating solubilization properties, the shape of droplets, and quality of optimum formulation. The geometrical sizes of non-spherical droplets (Ld, Rd)—as an indicator of how droplet sizes are changing with HLD—were consistent with the separation results. Correlating Ld/Rd at phase transition points with bottle test results validates the hypothesis that NAC-predicted geometries and demulsification behavior are interconnected. Finally, the effect of sec-butanol was examined on both synthetic and real systems, providing reliable insights in terms of the effect of alcohol for WOR ≠ 1.

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Predicting microemulsion phase behavior using physics based HLD-NAC equation of state for surfactant flooding

Cited by 32 publications

References 44 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

Application of Hydrophilic–Lipophilic Deviation Equations to the Formulation of a Mixed‐Surfactant Washing Agent for Crude Rice Bran Oil Removal from Spent Bleaching Earth

Design of industrial wastewater demulsifier by HLD-NAC model

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