Effects of Impurities on CO2 Sequestration in Saline Aquifers: Perspective of Interfacial Tension and Wettability

doi:10.1021/acs.iecr.7b03873

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	Effects of Impurities on CO2 Sequestration in Saline Aquifers: Perspective of Interfacial Tension and Wettability
	Chen C; Zhuang C ; Shen WJ(沈伟军); Li WZ
发表期刊	Industrial & Engineering Chemistry Research
	2017-12
卷号	57 期号:1 页码:1-9
ISSN	0888-5885
摘要	In recent years, the reduction of CO2 emissions has become a joint effort throughout the world, and carbon capture and sequestration (CCS) is an effective approach to solving the problem of CO2 emissions. In the present study, the effects of adding CH4, Ar, and H2S to CO2 on the interfacial tension (IFT) and wettability (contact angle, CA) of the CO2/water/silica system have been investigated using molecular dynamics simulation methods at 20 MPa and 318 K when the molar concentration of impurity gas was fixed at 20%. For the conditions studied, (1) CH4 has no significant effect; (2) Ar leads to a higher IFT, a larger CA on silica surfaces with a high hydroxyl density, and a smaller CA on silica surfaces with a low hydroxyl density; and (3) H2S causes a decrease of the IFT and an increase of the CA. Capillary pressure and gas storage capacity were predicted using IFT and CA data, and the variation of IFT and CA were explained based on density profiles normal to the gas/water and gas/silica interfaces. These findings might be helpful for better understanding the effects of impurities on CCS.
DOI	10.1021/acs.iecr.7b03873
URL	查看原文
收录类别	SCI ; EI
语种	英语
WOS记录号	WOS:000419999800036
关键词[WOS]	CARBON-DIOXIDE CAPTURE ; MOLECULAR-DYNAMICS SIMULATION ; GEOLOGICAL STORAGE ; GAS-RESERVOIRS ; PHASE-EQUILIBRIA ; SYSTEMS ; WATER ; TEMPERATURE ; INJECTION ; PRESSURE
WOS研究方向	Engineering, Chemical
WOS类目	Engineering
项目资助者	National Natural Science Foundation of China [51676027, 51206016] ; Natural Science Foundation of Liaoning Province [201602147] ; Fundamental Research Funds for the Central Universities [DUT17LAB03]
论文分区	二类
力学所作者排名	3
引用统计	被引频次：1[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://dspace.imech.ac.cn/handle/311007/72153
专题	流固耦合系统力学重点实验室
通讯作者	Chen C
作者单位	1.Dalian University of Technology, Dalian 116024, P. R. China 2.Institute of Mechanics, Chinese Academy of Sciences, Beijing100190, P. R. China
推荐引用方式 GB/T 7714	Chen C,Zhuang C,Shen WJ,et al. Effects of Impurities on CO2 Sequestration in Saline Aquifers: Perspective of Interfacial Tension and Wettability[J]. Industrial & Engineering Chemistry Research,2017,57(1):1-9.
APA	Chen C,Zhuang C,Shen WJ,&Li WZ.(2017).Effects of Impurities on CO2 Sequestration in Saline Aquifers: Perspective of Interfacial Tension and Wettability.Industrial & Engineering Chemistry Research,57(1),1-9.
MLA	Chen C,et al."Effects of Impurities on CO2 Sequestration in Saline Aquifers: Perspective of Interfacial Tension and Wettability".Industrial & Engineering Chemistry Research 57.1(2017):1-9.

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