Enhancing CO2 hydrate formation and long-term stability in subseafloor saline sediments through integrated thermal and pressure management for effective CO2 sequestration

Erasto E. Kasala, Jinjie Wang, Wakeel Hussain, Asia Majid and Edwin E. Nyakilla

Applied Energy, 2025, vol. 377, issue PD, No S0306261924020634

Abstract: This review examines recent advancements in thermal and pressure management strategies for optimizing CO₂ hydrate formation and stability in subseafloor saline sediments, focusing on their application in carbon capture and storage (CCS). The research synthesizes findings from various studies, exploring how temperature and pressure manipulation, coupled with chemical additives, enhance CO₂ hydrate kinetics, stability, and sequestration efficiency. Novel approaches, such as electrical heating systems and pressure cycling, are discussed for their role in promoting hydrate formation. Challenges, including sediment heterogeneity, salinity variations, and environmental impacts, are critically analyzed. The review concludes by identifying research gaps and suggesting innovative methodologies to improve hydrate-based CCS efficiency. This work provides a comprehensive understanding of the current state and future direction of CO₂ hydrate research, contributing to advancing environmentally sustainable energy practices.

Keywords: CO2 hydrate; Thermal management; Pressure management; Stability enhancement; Subseafloor storage (search for similar items in EconPapers)
Date: 2025
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DOI: 10.1016/j.apenergy.2024.124680

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