Transforming Natural Resources into Advanced Solutions: The Contribution of Clay-Based Adsorbents to Carbon Dioxide (CO2) Adsorption

作者：Faizah Altaf, Shakeel Ahmed, Shahid Ali, Muhammad Mansha, Taiba Kouser, Safyan Akram Khan · 发表于：Transactions of Tianjin University · 年份：2025 · DOI：10.1007/s12209-025-00429-1 · 被引用次数：25 · 研究领域：Carbon Dioxide Capture Technologies、Phase Equilibria and Thermodynamics、Membrane Separation and Gas Transport

Abstract Carbon capture and storage (CCS) is an advanced environmental technology for mitigating CO 2 emissions and addressing climate change. Among the various approaches, adsorption has emerged as a promising method for CO 2 capture due to its effectiveness and practicality. This review explores the potential of clay minerals as adsorbents for CO 2 capture, providing an in-depth analysis of their inherent properties and the mechanisms involved in adsorption process. The review begins with an introduction to CCS and the concept of adsorption, followed by a detailed examination of various clay minerals, including sepiolite, montmorillonite, bentonite, kaolinite, saponite, halloysite, and illite. Each mineral’s suitability for CO 2 adsorption is assessed, highlighting the specific properties that contribute to their performance. The mechanisms of CO 2 adsorption including physisorption, chemisorption, ion exchange, pore diffusion, intraparticle diffusion, surface complexation, and competitive adsorption are thoroughly discussed. The review also covers the modification of clay minerals through physical and chemical treatments, amine functionalization, and composite formation to enhance their CO 2 adsorption capacity. Additionally, regeneration methods such as temperature-swing adsorption (TSA), pressure-swing adsorption (PSA), and purging are discussed, along with CO 2 recovery and storage techniques for improving energy efficiency. The review concludes with an overview of char...