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Comprehensive Review of CO2 Adsorption on Shale Formations: Exploring Widely Adopted Isothermal Models and Calculation Techniques

  • 0Department of Petroleum Engineering, Universiti Teknologi Petronas, Persiaran, Seri Iskandar, 32610 Perak, Malaysia.
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January 1, 2025

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January 1, 2025

View abstract on PubMed

Summary

This summary is machine-generated.

Shale formations can store carbon dioxide (CO2) through adsorption, mitigating climate change. This study evaluates isothermal models for accurate CO2 storage capacity prediction in shale, highlighting areas for improved forecasting.

Area Of Science

  • Geochemistry and Environmental Science
  • Petroleum Engineering and Carbon Sequestration

Background

  • Fossil fuel combustion releases significant carbon dioxide (CO2), a primary driver of global warming.
  • Shale formations offer potential for CO2 sequestration, primarily via gas adsorption.
  • Accurate CO2 adsorption modeling in shale is crucial for effective storage capacity estimation.

Purpose Of The Study

  • To evaluate the performance of various isothermal models in predicting CO2 adsorption on shale.
  • To assess model efficiency across diverse shale compositions, surface areas, and pore geometries.
  • To identify limitations of current models and propose enhancements for improved accuracy.

Main Methods

  • Application and comparison of multiple isothermal adsorption models (Langmuir, Freundlich, BET, DR, DA, Sips, Toth, Ono-Kondo).
  • Analysis of CO2 adsorption on shale samples at 298 K and up to 2 MPa.
  • Review of model constraints and proposal of adaptations like density-dependent corrections and hybrid techniques.

Main Results

  • The study provides a comprehensive assessment of existing isothermal models for CO2 adsorption on shale.
  • Identified limitations in current models necessitate further refinement for precise storage predictions.
  • Proposed adaptations and integration with molecular dynamics simulations can enhance predictive accuracy.

Conclusions

  • Accurate forecasting of CO2 storage in shale requires improved isothermal models and empirical validation.
  • Future research should focus on model enhancement and integration with advanced simulation techniques.
  • Optimized CO2 sequestration in shale formations is key to mitigating greenhouse gas emissions.

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