Review of geochemical processes in CCUS: Mechanisms, processes, and implications

IF 7.2 1区地球科学 Q1 GEOSCIENCES, MULTIDISCIPLINARY

Gondwana Research Pub Date : 2025-06-20 DOI:10.1016/j.gr.2025.05.023

Shuaiyi Lu, Pan Jiang, Lianghan Cong, Tianqi Zheng, Yankai Hao, Xiaoshu Lü

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引用次数: 0

Abstract

The emission of greenhouse gases has resulted in the deterioration of the global climate, leading nations worldwide to adopt measures to mitigate the environmental impact of carbon emissions. Carbon dioxide capture, utilization and storage (CCUS) is an emerging large-scale greenhouse gas emission reduction technology with the potential to become an important means of mitigating the greenhouse effect in the future. However, the geochemical reactions accompanying CCUS implementation critically impact system stability and the environment. This review systematically examines the geochemical reaction mechanisms in CCUS reservoirs, including clastic rock, claystone, carbonate rock, igneous rock, and coal, and their effects and risks on CO2 sequestration systems. It has been demonstrated that geochemical reactions are prevalent in various types of CCUS, including mineral dissolution, CO2 mineralization, and adsorption of CO2 by rocks. These reactions may alter rock strength, caprock sealing integrity, fracture development, and groundwater ion concentrations, influencing sequestration outcomes. The study highlights challenges in CCUS geochemical research and proposes future directions. By enhancing understanding of reaction processes and risks, this work provides insights for CCUS operation, monitoring, and research.

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CCUS中地球化学过程的综述：机制、过程和意义

温室气体的排放导致全球气候的恶化，导致世界各国采取措施减轻碳排放对环境的影响。二氧化碳捕集、利用与封存（CCUS）是一项新兴的大规模温室气体减排技术，有可能成为未来缓解温室效应的重要手段。然而，CCUS实施过程中发生的地球化学反应严重影响了系统的稳定性和环境。本文系统地综述了碎屑岩、粘土岩、碳酸盐岩、火成岩和煤等CCUS储层的地球化学反应机制及其对CO2封存系统的影响和风险。地球化学反应普遍存在于各种类型的CCUS中，包括矿物溶解、CO2矿化和岩石对CO2的吸附。这些反应可能会改变岩石强度、盖层密封完整性、裂缝发育和地下水离子浓度，从而影响封存效果。该研究强调了CCUS地球化学研究面临的挑战，并提出了未来的发展方向。通过加强对反应过程和风险的理解，本工作为CCUS的操作、监测和研究提供了见解。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Gondwana Research 地学-地球科学综合

CiteScore

12.90

自引率

6.60%

发文量

298

审稿时长

65 days

期刊介绍： Gondwana Research (GR) is an International Journal aimed to promote high quality research publications on all topics related to solid Earth, particularly with reference to the origin and evolution of continents, continental assemblies and their resources. GR is an "all earth science" journal with no restrictions on geological time, terrane or theme and covers a wide spectrum of topics in geosciences such as geology, geomorphology, palaeontology, structure, petrology, geochemistry, stable isotopes, geochronology, economic geology, exploration geology, engineering geology, geophysics, and environmental geology among other themes, and provides an appropriate forum to integrate studies from different disciplines and different terrains. In addition to regular articles and thematic issues, the journal invites high profile state-of-the-art reviews on thrust area topics for its column, ''GR FOCUS''. Focus articles include short biographies and photographs of the authors. Short articles (within ten printed pages) for rapid publication reporting important discoveries or innovative models of global interest will be considered under the category ''GR LETTERS''.