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Sustainability
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Geological Storage of CO2 and Climate Control
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Geological Storage of CO2 and Climate Control

A special issue of Sustainability (ISSN 2071-1050).

Deadline for manuscript submissions: closed (31 December 2021) | Viewed by 6031

Special Issue Editor

Dr. Yuri Leonenko

E-Mail Website
Guest Editor
Department of Earth & Environmental Sciences, Department of Geography and Environmental Management, University of Waterloo
Interests: development of new technologies for CO2 sequestration; climate control

Special Issue Information

Dear Colleagues,

One of the options to mitigate global warming is geological storage (sequestration) of carbon dioxide (CO2) for reducing greenhouse gas atmospheric emissions. Geological sequestration refers to the injection of CO2 into subsurface formations, such as depleted oil and gas reservoirs, saline formations, or un-minable coal beds. This technology is considered as one of the most effective ways of reducing emissions in the short to medium term. In the IEA Clean Technology Scenario, over 100 Gt of CO2 are permanently stored in the period from now to 2060; therefore, it is important that we fully understand the implications of carbon storage from a technical, environmental, economic, and social perspective.

We invite contributions on innovative technical developments, case studies, analysis, reviews, and assessment from different disciplines, which are relevant to geological sequestration of carbon dioxide and climate control technologies. The topics include (but are not limited to): reservoir response and plume evolution during and after CO2 injection; reservoir characterization; fluid migration, leakage pathways and ground water impacts; storage capacity; trapping mechanisms; risk assessments; monitoring; geochemistry; and storage performance assessments.

Dr. Yuri Leonenko
Guest Editor

Manuscript Submission Information

Manuscripts should be submitted online at www.mdpi.com by registering and logging in to this website. Once you are registered, click here to go to the submission form. Manuscripts can be submitted until the deadline. All submissions that pass pre-check are peer-reviewed. Accepted papers will be published continuously in the journal (as soon as accepted) and will be listed together on the special issue website. Research articles, review articles as well as short communications are invited. For planned papers, a title and short abstract (about 100 words) can be sent to the Editorial Office for announcement on this website.

Submitted manuscripts should not have been published previously, nor be under consideration for publication elsewhere (except conference proceedings papers). All manuscripts are thoroughly refereed through a single-blind peer-review process. A guide for authors and other relevant information for submission of manuscripts is available on the Instructions for Authors page. Sustainability is an international peer-reviewed open access semimonthly journal published by MDPI.

Please visit the Instructions for Authors page before submitting a manuscript. The Article Processing Charge (APC) for publication in this open access journal is 2400 CHF (Swiss Francs). Submitted papers should be well formatted and use good English. Authors may use MDPI's English editing service prior to publication or during author revisions.

Keywords

  • CO2 geological sequestration
  • storage capacity
  • risk assessments
  • system integrated assessment
  • alternative technologies for climate control

Published Papers (2 papers)

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Research

22 pages, 4987 KiB  
Article
Effects of Supercritical CO2 Treatment Temperatures on Mineral Composition, Pore Structure and Functional Groups of Shale: Implications for CO2 Sequestration
by Yugang Cheng, Mengru Zeng, Zhaohui Lu, Xidong Du, Hong Yin and Liu Yang
Sustainability 2020, 12(9), 3927; https://doi.org/10.3390/su12093927 - 11 May 2020
Cited by 45 | Viewed by 3275
Abstract
Research on the physicochemical reactions between supercritical carbon dioxide (Sc-CO2) and shale at different temperature is essential for geological CO2 sequestration. In this paper, shale from the Longmaxi formation in Sichuan basin of China was collected to study the changes [...] Read more.
Research on the physicochemical reactions between supercritical carbon dioxide (Sc-CO2) and shale at different temperature is essential for geological CO2 sequestration. In this paper, shale from the Longmaxi formation in Sichuan basin of China was collected to study the changes in mineral composition, pore structure, and organic functional groups treated with Sc-CO2 at fixed pressure 8 MPa and temperatures 40 °C to 80 °C. Samples were analyzed with x-ray diffraction, CO2/N2 gas adsorption, and Fourier transform infrared spectroscopy. The results show that the dissolution of clay minerals by Sc-CO2 first declined, but then increased when the temperature increased; dissolution reached a minimum at 60 °C. The specific surface area, total pore volume, predominant pore type (mesopores), and fractal dimension of the shale pore structure first increases and then decreases with increasing temperature. The destruction of hydroxyl structures by Sc-CO2 is related to the destruction of OH–N and ring hydroxyls. As the temperature increases, the hydroxyl destruction first increases and then decreases. The aromatic hydrocarbons are mainly dominated by 3H and 2H, and their abundances increase significantly as temperature increases, whereas the 4H shows a decreasing trend; the 1H abundance does not change appreciably. The relative abundances of aromatic and aliphatic hydrocarbons decrease linearly as the temperature increases. These research results provide theoretical support for the geological storage of Sc-CO2 in shale at different temperatures. Full article
(This article belongs to the Special Issue Geological Storage of CO2 and Climate Control)
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16 pages, 11478 KiB  
Article
Effects of Supercritical CO2 Treatment Temperature on Functional Groups and Pore Structure of Coals
by Zhaolong Ge, Mengru Zeng, Yugang Cheng, Haoming Wang and Xianfeng Liu
Sustainability 2019, 11(24), 7180; https://doi.org/10.3390/su11247180 - 15 Dec 2019
Cited by 12 | Viewed by 2256
Abstract
The buried depth of a coal seam determines the temperature at which CO2 and coal interact. To better understand CO2 sequestration, the pore structure and organic functional groups of coal treated with different ScCO2 temperatures were studied. In this study, [...] Read more.
The buried depth of a coal seam determines the temperature at which CO2 and coal interact. To better understand CO2 sequestration, the pore structure and organic functional groups of coal treated with different ScCO2 temperatures were studied. In this study, three different rank coals were treated with ScCO2 at different temperatures under 8 MPa for 96 h in a geochemical reactor. The changes in pore structure and chemical structure of coal after ScCO2 treatment were analyzed using mercury intrusion porosimetry, attenuated total reflection Fourier transform infra-red spectroscopy, fractal theory, and curve fitting. The results show that the enhancement effect of ScCO2 on pore structure of coal becomes less significant as the increase of buried depth. In most of the treated coal samples, the variation proportion of mesopores decreased and the variation proportion of macropores increased. In the relatively higher rank coals, the degree of condensation (DOC) of aromatic rings decreased after treatment with ScCO2. The DOC values showed a U-shape relationship with temperature, and the aromaticity showed a downward trend with increasing temperature. The chemical structural changes in the relatively lower rank coal sample were complex. These findings will provide an understanding of mechanisms relevant to CO2 sequestration with enhanced coalbed methane recovery under different geothermal gradients and for different ranks of coal. Full article
(This article belongs to the Special Issue Geological Storage of CO2 and Climate Control)
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