Facile Metal Release from Pore-Lining Phases Enables Unique Carbonate Zonation in a Basalt Carbon Mineralization Demonstration
Journal Article
·
· Environmental Science and Technology
- Pacific Northwest National Laboratory (PNNL), Richland, WA (United States)
Carbon-negative strategies such as geologic carbon sequestration in continental flood basalts offers a promising route to the removal of greenhouse gases, such as CO2, via safe and permanent storage as stable carbonates. This potential has been successfully demonstrated at a field scale at the Wallula Basalt Carbon Storage Pilot Project where supercritical CO2 was injected into the Columbia River Basalt Group (CRBG). Here, we analyze recovered post-injection sidewall core cross-sections containing carbonate nodules using μ-XRF chemical mapping techniques that revealed compositional zonation within the nodules. The unique nature of the subsurface anthropogenic carbonates is highlighted by the near absence of Mg in an ankerite-like composition. Furthermore, a comparison between pre- and post-injection sidewall cores along with an in-depth chemical mapping of basalt pore lining cements provides a better understanding into the source and fate of critical cationic species involved in the precipitation of carbon mineralization products. Collectively, these results provide crucial insights into carbonate growth mechanisms under a time-dependent pore fluid composition. Finally, as such, these findings will enable parameterization of predictive models for future CO2 sequestration efforts in reactive reservoirs around the world.
- Research Organization:
- Pacific Northwest National Laboratory (PNNL), Richland, WA (United States)
- Sponsoring Organization:
- USDOE Office of Fossil Energy and Carbon Management (FECM)
- Grant/Contract Number:
- AC05-76RL01830
- OSTI ID:
- 2203507
- Report Number(s):
- PNNL-SA--182643
- Journal Information:
- Environmental Science and Technology, Journal Name: Environmental Science and Technology Journal Issue: 32 Vol. 57; ISSN 0013-936X
- Publisher:
- American Chemical Society (ACS)Copyright Statement
- Country of Publication:
- United States
- Language:
- English
Similar Records
3D Quantification of Pore Networks and Anthropogenic Carbon Mineralization in Stacked Basalt Reservoirs
Pore-Scale Microenvironments Control Anthropogenic Carbon Mineralization Outcomes in Basalt
Exotic Carbonate Mineralization Recovered from a Deep Basalt Carbon Storage Demonstration
Journal Article
·
Wed Jan 31 19:00:00 EST 2024
· Environmental Science and Technology
·
OSTI ID:2335501
Pore-Scale Microenvironments Control Anthropogenic Carbon Mineralization Outcomes in Basalt
Journal Article
·
Tue Nov 29 19:00:00 EST 2022
· ACS Earth and Space Chemistry
·
OSTI ID:1906315
Exotic Carbonate Mineralization Recovered from a Deep Basalt Carbon Storage Demonstration
Journal Article
·
Mon Sep 26 20:00:00 EDT 2022
· Environmental Science and Technology
·
OSTI ID:1895590