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A Review of CO2 Storage in View of Safety and Cost-Effectiveness

Research Center of Energy Storage Technologies, Clausthal University of Technology, 38640 Goslar, Germany
Institute of Petroleum Engineering, Clausthal University of Technology, 38678 Clausthal-Zellerfeld, Germany
State Key Laboratory of Geomechanics and Geotechnical Engineering, Institute of Rock and Soil Mechanics, Chinese Academy of Sciences, Wuhan 430071, China
Department of Petroleum & Gas Engineering, University of Engineering & Technology Lahore, Lahore 54890, Pakistan
Authors to whom correspondence should be addressed.
Energies 2020, 13(3), 600;
Received: 21 November 2019 / Revised: 15 January 2020 / Accepted: 19 January 2020 / Published: 29 January 2020
The emissions of greenhouse gases, especially CO2, have been identified as the main contributor for global warming and climate change. Carbon capture and storage (CCS) is considered to be the most promising strategy to mitigate the anthropogenic CO2 emissions. This review aims to provide the latest developments of CO2 storage from the perspective of improving safety and economics. The mechanisms and strategies of CO2 storage, focusing on their characteristics and current status, are discussed firstly. In the second section, the strategies for assessing and ensuring the security of CO2 storage operations, including the risks assessment approach and monitoring technology associated with CO2 storage, are outlined. In addition, the engineering methods to accelerate CO2 dissolution and mineral carbonation for fixing the mobile CO2 are also compared within the second section. The third part focuses on the strategies for improving economics of CO2 storage operations, namely enhanced industrial production with CO2 storage to generate additional profit, and co-injection of CO2 with impurities to reduce the cost. Moreover, the role of multiple CCS technologies and their distribution on the mitigation of CO2 emissions in the future are summarized. This review demonstrates that CO2 storage in depleted oil and gas reservoirs could play an important role in reducing CO2 emission in the near future and CO2 storage in saline aquifers may make the biggest contribution due to its huge storage capacity. Comparing the various available strategies, CO2-enhanced oil recovery (CO2-EOR) operations are supposed to play the most important role for CO2 mitigation in the next few years, followed by CO2-enhanced gas recovery (CO2-EGR). The direct mineralization of flue gas by coal fly ash and the pH swing mineralization would be the most promising technology for the mineral sequestration of CO2. Furthermore, by accelerating the deployment of CCS projects on large scale, the government can also play its role in reducing the CO2 emissions. View Full-Text
Keywords: CO2 storage; CO2 utilization; security assessment; cost-effectiveness; CO2 storage projects CO2 storage; CO2 utilization; security assessment; cost-effectiveness; CO2 storage projects
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MDPI and ACS Style

Cao, C.; Liu, H.; Hou, Z.; Mehmood, F.; Liao, J.; Feng, W. A Review of CO2 Storage in View of Safety and Cost-Effectiveness. Energies 2020, 13, 600.

AMA Style

Cao C, Liu H, Hou Z, Mehmood F, Liao J, Feng W. A Review of CO2 Storage in View of Safety and Cost-Effectiveness. Energies. 2020; 13(3):600.

Chicago/Turabian Style

Cao, Cheng, Hejuan Liu, Zhengmeng Hou, Faisal Mehmood, Jianxing Liao, and Wentao Feng. 2020. "A Review of CO2 Storage in View of Safety and Cost-Effectiveness" Energies 13, no. 3: 600.

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