Extracting the equation of state of lattice gases from random sequential adsorption simulations by means of the Gibbs adsorption isotherm

Darjani, Shaghayegh; Koplik, Joel; Pauchard, Vincent

doi:10.1103/physreve.96.052803

Cited by 36 publications

(33 citation statements)

References 66 publications

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“…This ability allows the formation of oil-water emulsions, assisting the progress of the oil recovery. This is achievable due to the adsorption of the biosurfactant at the interface and consequent reduction of interfacial energy (Darjani et al 2017).…”

Section: Emulsification Indexmentioning

confidence: 99%

Application of rhamnolipid biosurfactant produced by Pseudomonas aeruginosa in microbial-enhanced oil recovery (MEOR)

Câmara

Sousa

Neto

et al. 2019

J Petrol Explor Prod Technol

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In this study, the biosurfactant produced by Pseudomonas aeruginosa was evaluated in view of its ability to be used in Microbial-Enhanced Oil Recovery (MEOR). This microorganism was isolated from a soil artificially contaminated with crude oil and used to produce rhamnolipid using glycerol as the carbon source. The biosurfactant efficiently reduced water surface tension from 72 to 35.26 mN/m at its critical micelle concentration of 127 mg/L and emulsification rate (E 24) of 69% for the crude oil. Furthermore, it was demonstrated that the rhamnolipid can recover oil, even 2 months after its production, which shows that its biodegradability is not a disadvantage to the application in MEOR. The best result, for a biosurfactant concentration of 100% above the Critical Micelle Concentration (CMC) and petroleum with API gravity of 21.90, showed that the total recovery factor was 50.45 ± 0.79%, of which 11.91 ± 0.39% corresponds to MEOR.

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Section: Emulsification Indexmentioning

confidence: 99%

Application of rhamnolipid biosurfactant produced by Pseudomonas aeruginosa in microbial-enhanced oil recovery (MEOR)

Câmara

Sousa

Neto

et al. 2019

J Petrol Explor Prod Technol

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“…Thus, the blocking function is the only information needed to calculate the equation of state, and we have shown previously [54] that for lattice gases the blocking function can be easily extracted from RSAD model simulations. In the RSAD model, where surface diffusion is introduced in parallel with adsorption, vacancies large enough to adsorb a further particle are both created and destroyed.…”

Section: Introductionmentioning

confidence: 99%

Liquid-hexatic-solid phase transition of a hard-core lattice gas with third neighbor exclusion

Darjani

Koplik

Banerjee

et al. 2019

The Journal of Chemical Physics

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The determination of phase behavior and, in particular, the nature of phase transitions in twodimensional systems is often clouded by finite size effects and by access to the appropriate thermodynamic regime. We address these issues using an alternative route to deriving the equation of state of a two-dimensional hard-core particle system, based on kinetic arguments and the Gibbs adsorption isotherm, by use of the random sequential adsorption with surface diffusion (RSAD) model. Insight into coexistence regions and phase transitions is obtained through direct visualization of the system at any fractional surface coverage via local bond orientation order. The analysis of the bond orientation correlation function for each individual configuration confirms that first-order phase transition occurs in a two-step liquid-hexatic-solid transition at high surface coverage. arXiv:1908.05555v1 [cond-mat.soft]

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“…Due to the high cost of surfactant, using alkaline with surfactant in chemical injection to improve the efficiency of the process is taken into consideration (Mozaffari et al 2017a;. Alkaline reacts with the acid composition of the oil and produces surfactant that increases oil recovery by reducing interfacial tension between the injected fluid and oil, altering wettability of porous medium and forming emulsion spontaneously which releases the oil from the pores (Zolfagharloo et al 2018;Darjani et al 2017). Relative permeability curves have an important role in the performance of the reservoirs and also one of the most important input data for the simulation of oil reservoirs (Mozaffari et al 2015; Hosseini 2019; Liu et al 2017).…”

Section: Introductionmentioning

confidence: 99%

The effect of alkaline–surfactant on the wettability, relative permeability and oil recovery of carbonate reservoir rock: experimental investigation

Hosseini

Hajivand

Tahmasebi

2019

J Petrol Explor Prod Technol

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Due to the increasing demand and the price of hydrocarbon fuels, today, cost-effective enhanced recovery of oil and gas reservoirs has become one of the most interesting research topics. Since the Iranian reservoirs have a considerable potential to apply the chemical EOR processes, it seems that extensive research in this field is inevitable. One of the most important enhanced oil recovery techniques is injecting alkaline-surfactant into the reservoir. Although injecting alkaline-surfactant has been investigated in many researches, few studies reported on the effect of this process on the oil/water relative permeabilities which control the recovery performance. Today, the need for EOR processes is critical. One of the newest ideas for this respect is the concept of altering the rock wettability to more water wet. This phenomenon leads to making a path for oil in the larger routes, therefore increasing the recovery. In most cases, waterflooding has a low effect and by increasing the water production, the oil recovery becomes non-economical. In most studies, the effect of solution injection has been considered. In this study, we have investigated the effect of chemicals on interfacial tension and the wettability alteration based on relative permeability curves. In this work, using three surfactants, anionic (SDS), cationic (CTAB) and nonionic (Triton X-100), with sodium carbonate alkaline, relative permeabilities, wettability, IFT and the recovery efficiency in the porous media in the core scale have been investigated. The results show that cationic surfactant has the most effect on reduction in IFT and changing the wettability to water wetness, which has 70% recovery factor. Anionic surfactant has a greater effect on the reduction in interfacial tension in comparison with nonionic surfactant. Furthermore, nonionic surfactant has the most effect on changing the wettability to water wetness in comparison with anionic surfactant. Moreover, the recovery enhancement in the case of injection of alkaline-nonionic surfactant (67%) is more considerable than alkaline-anionic (65%).

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Extracting the equation of state of lattice gases from random sequential adsorption simulations by means of the Gibbs adsorption isotherm

Cited by 36 publications

References 66 publications

Application of rhamnolipid biosurfactant produced by Pseudomonas aeruginosa in microbial-enhanced oil recovery (MEOR)

Application of rhamnolipid biosurfactant produced by Pseudomonas aeruginosa in microbial-enhanced oil recovery (MEOR)

Liquid-hexatic-solid phase transition of a hard-core lattice gas with third neighbor exclusion

The effect of alkaline–surfactant on the wettability, relative permeability and oil recovery of carbonate reservoir rock: experimental investigation

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