C. Heath Stanfield*, Quin R. S. Miller*, Anil K. Battu, Nabajit Lahiri, Alexandra B. Nagurney, Ruoshi Cao, Emily T. Nienhuis, Donald J. DePaolo, Drew E. Latta and H. Todd Schaef,
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引用次数: 0
Abstract
Locating and developing ideal sites for large-scale capture and storage of carbon dioxide has become increasingly necessary due to increasing global emissions and warming. Mafic–ultramafic rocks present a unique geologic setting as they can trap injected CO2 in pore space, mineralize that CO2 to permanently store it as carbonate minerals, and simultaneously release critical minerals. However, these reservoirs are undercharacterized relative to sedimentary carbon storage settings. In this study, we execute a methodology for determining carbonation and critical mineral recovery potential in mafic–ultramafic reservoirs. Using an olivine-rich basalt from the island of Hawai’i, we performed petrologic and geochemical analyses to determine its chemistry, mineralogy, and pore network architecture. We use this data to first quantify the nonreactive storage resource potential and determine the bulk storage of 50 MMT of CO2 in the pore space of a basalt volume test case, along with realistic P10, P50, and P90 scenarios for that same volume. Then, using the chemistry and mineralogy, we both estimate the total mineralization and critical mineral recovery potential, as well as more realistic values based on dissolution–precipitation reactions at the surface areas of pores. This storage resource estimate methodology can assist in accelerating the global commercialization of geologic carbon storage and critical mineral recovery.
期刊介绍:
The scope of ACS Earth and Space Chemistry includes the application of analytical, experimental and theoretical chemistry to investigate research questions relevant to the Earth and Space. The journal encompasses the highly interdisciplinary nature of research in this area, while emphasizing chemistry and chemical research tools as the unifying theme. The journal publishes broadly in the domains of high- and low-temperature geochemistry, atmospheric chemistry, marine chemistry, planetary chemistry, astrochemistry, and analytical geochemistry. ACS Earth and Space Chemistry publishes Articles, Letters, Reviews, and Features to provide flexible formats to readily communicate all aspects of research in these fields.