ACS Omega· 2021Q1· Review
Surfactant Adsorption Isotherms: A Review
- 1,043citations
- Q1SCImago
- 2021year
Short summary
This review consolidates theories and models for surfactant adsorption on rock surfaces, crucial for optimizing chemical-enhanced oil recovery (cEOR). It details common isotherm models like Langmuir and Freundlich, and more complex ones such as Redlich-Peterson and Sips.
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Key points
- Surfactant adsorption on rock surfaces is a critical factor in chemical-enhanced oil recovery (cEOR).
- The review covers established adsorption theories like two-step and four-region models.
- Commonly used isotherm models include Langmuir (monolayer, homogeneous sites) and Freundlich (multilayer, heterogeneous sites).
- More complex, three-parameter models like Redlich-Peterson and Sips are also discussed.
AI-generated from the title and abstract; the full text is not read.
Abstract
The need to minimize surfactant adsorption on rock surfaces has been a challenge for surfactant-based, chemical-enhanced oil recovery (cEOR) techniques. Modeling of adsorption experimental data is very useful in estimating the extent of adsorption and, hence, optimizing the process. This paper presents a mini-review of surfactant adsorption isotherms, focusing on theories of adsorption and the most frequently used adsorption isotherm models. 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. Langmuir and Freundlich are two-parameter adsorption isotherms that are widely used in cEOR studies. The Langmuir isotherm is applied to monolayer adsorption on homogeneous sites, whereas the Freundlich isotherm suites are applied to multilayer adsorption on heterogeneous sites. Some more complex adsorption isotherms are also discussed in this paper, such as Redlich-Peterson and Sips isotherms, both involve three parameters. This paper will help select and apply a suitable adsorption isotherm to experimental data.
The authors' abstract, as published at the source. ACS Omega, 2021 · DOI ↗
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Field: Ocean Engineering
Ocean EngineeringEngineering