Surfactant Adsorption Isotherms: A Review

The need to minimize surfactant adsorption on rock surfaces has been a challenge for surfactant-based, chemical-enhanced oil recovery (cEOR) techniques. Some more complex adsorption isotherms are also discussed in this paper, such as Redlich-Peterson and Sips isotherms, both involve three parameters.

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• 1 Modeling of adsorption experimental data is very useful in estimating the extent of adsorption and, hence, optimizing the process.
• 2 This paper presents a mini-review of surfactant adsorption isotherms, focusing on theories of adsorption and the most frequently used adsorption isotherm models.
• 3 Two-step and four-region adsorption theories are well-known, with the former representing adsorption in two steps, while the latter distinguishes four regions in the adsorption isotherm.

This work deepens our understanding of the fundamental laws governing the universe, from subatomic particles to cosmic structures.

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