Mineral Carbon Capture and Storage in Igneous Rocks

A special issue of Minerals (ISSN 2075-163X). This special issue belongs to the section "Environmental Mineralogy and Biogeochemistry".

Deadline for manuscript submissions: closed (31 December 2022) | Viewed by 3104

Special Issue Editor


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Guest Editor
1. Department of Earth Sciences, School of Ocean and Earth Science and Technology, University of Hawaii at Manoa, Honolulu, HI 96822, USA
2. Marine Geology and Geophysics, Division of Ocean Sciences (OCE), National Science Foundation, Alexandria, VA 22314, USA
Interests: mineral carbon capture; CO2 fixation; CO2 sequestration; mineral carbonation; mineral storage; basalt carbonation; ultramafic carbonation

Special Issue Information

Dear Colleagues,

Reduction of ever-increasing greenhouse gas emissions and mitigation of the effects of increasing atmospheric concentrations of these gases are among the most pressing challenges to society in this century. In situ mineral carbonation provides an effective means to achieve this. Geological carbon capture—via fluid–rock reactions that remove carbon from air or surface waters—provides an alternative to industrial CO2 capture and transport. Near-surface reaction of CO2-bearing fluids with silicate minerals in ultramafic and mafic rocks (e.g., chemical weathering of peridotites and basalts) produces stable carbonate minerals. The chemical weathering of silicate rocks is the principal mechanism by which the Earth regulates atmospheric CO2 concentrations over geological timescales to maintain Earth’s climate within a relatively narrow temperature window of habitability. Ca–Mg–Fe carbonate products of the chemical weathering process are essentially permanently stable at surface and near-surface conditions in contrast to mechanical trapping of CO2 in other types of reservoirs that are susceptible to leakage. Among commonly proposed CO2 storage techniques, the injection of anthropogenic CO2 into deep basalt and peridotite formations is quite promising due to their large potential storage capacity and broad geographic distribution. Much research has focused on the petrological, chemical, microbiological, and physical aspects of long-term CO2 storage in mafic and ultramafic rocks. This Special Issue presents current, state-of-the-art research on many aspects pertinent to utilizing and enhancing natural reactions that convert atmospheric CO2 to stable carbonates in mafic and ultramafic rocks.

Dr. Kevin T. M. Johnson
Guest Editor

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Keywords

  • Mineral carbon capture
  • Geological carbon capture
  • Carbon sequestration
  • CO2 fixation
  • CO2 sequestration
  • Mineral carbonation
  • Basalt carbonation
  • Peridotite carbonation

Published Papers (1 paper)

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Research

20 pages, 15492 KiB  
Article
Geochemical Modelling of the Evolution of Caprock Sealing Capacity at the Shenhua CCS Demonstration Project
by Guodong Yang, Xin Ma, Tao Feng, Ying Yu, Shuguo Yin, Mian Huang and Yongsheng Wang
Minerals 2020, 10(11), 1009; https://doi.org/10.3390/min10111009 - 12 Nov 2020
Cited by 14 | Viewed by 2391
Abstract
CO2 geological storage is considered as an important measure to reduce anthropogenic CO2 emissions to the atmosphere for addressing climate change. The key prerequisite for long-term CO2 geological storage is the sealing capacity of caprock. This study investigates the evolution [...] Read more.
CO2 geological storage is considered as an important measure to reduce anthropogenic CO2 emissions to the atmosphere for addressing climate change. The key prerequisite for long-term CO2 geological storage is the sealing capacity of caprock. This study investigates the evolution of sealing capacity of caprock induced by geochemical reactions among CO2, water and caprock using TOUGHREACT code based on the Heshanggou Formation mudstone at the Shenhua Carbon Capture and Storage (CCS) demonstration site of China. The results show that the self-sealing phenomenon occurs in the lower part of the caprock dominated by the precipitation of dawsonite, magnesite, siderite, Ca-smectite and illite. While the self-dissolution occurs in the upper part of caprock mainly due to the dissolution of kaolinite, K-feldspar, chlorite and Ca-smectite. Sensitivity analyses indicate that the precipitation of dawsonite, magnesite, siderite is highly advantageous leading to self-sealing of caprock, with albite and chlorite dissolution providing Na+, Mg2+ and Fe2+. The dissolution of K-feldspar dominates illite precipitation by providing required K+, and albite affects Ca-smectite precipitation. The self-sealing and self-dissolution of caprock are enhanced significantly with increasing temperature, while the effect of salinity on caprock sealing capacity is negligible perhaps due to the low salinity level of formation water. Full article
(This article belongs to the Special Issue Mineral Carbon Capture and Storage in Igneous Rocks)
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