Carbon sequestration at the Illinois Basin-Decatur Project: experimental results and geochemical simulations of storage
| Autor: | Shane K. Butler, Peter M. Berger, Jared T. Freiburg, William R. Roy, Lois E. Yoksoulian |
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| Rok vydání: | 2019 |
| Předmět: |
0208 environmental biotechnology
Soil Science Mineralogy 02 engineering and technology 010501 environmental sciences Carbon sequestration Feldspar 01 natural sciences chemistry.chemical_compound Brining Mineral alteration Environmental Chemistry Precipitation Dissolution 0105 earth and related environmental sciences Earth-Surface Processes Water Science and Technology Calcite Global and Planetary Change Geology Pollution 020801 environmental engineering Plume chemistry visual_art visual_art.visual_art_medium Environmental science |
| Zdroj: | Environmental Earth Sciences. 78 |
| ISSN: | 1866-6299 1866-6280 |
| Popis: | The Midwest Geological Sequestration Consortium is conducting the Illinois Basin-Decatur Project (IBDP), a large-scale demonstration of carbon sequestration that injected the CO2 from an ethanol plant into the Mt. Simon Sandstone. Using site-specific data and samples, batch experiments were conducted at reservoir conditions and the reactive transport code TOUGHREACT was used to model the CO2 migration and interactions in the injection formation. In the model, most of the mineral alteration occurred after the injection was completed and brine displaced the CO2 at the base of the plume. K-feldspar dissolution led to a nearly 10% increase in porosity which is a maximum estimate of alteration because, the model omits mineral transformations and may underestimate clay precipitation and the effects of grain coatings. The batch experiments recreated these conditions and showed a little alteration. In both the model and experiments, the bulk of the mineralogy remained inert. Calcite precipitated within the modeled plume where the transformation of K-feldspar to clays buffered the pH, though this process only produced minor mineral sequestration. Less-permeable layers in the model baffled the ascent of the CO2 plume and caused it to spread laterally. The plume did not reach the upper third of the Mt. Simon Sandstone. Both the model and the batch experiments show that the bulk of the Mt. Simon Sandstone will undergo little change due to CO2 injection, and the batch experiments show the feldspar dissolution in the model is likely limited. |
| Databáze: | OpenAIRE |
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