Mineral changes in cement-sandstone matrices induced by biocementation
- National Energy Technology Lab. (NETL), Albany, OR (United States)
- Oregon State Univ., Corvallis, OR (United States). College of Earth, Ocean, and Atmospheric Sciences
- Oregon State Univ., Corvallis, OR (United States). College of Science
Prevention of wellbore CO2 leakage is a critical component of any successful carbon capture, utilization, and storage program. Sporosarcina pasteurii is a bacterium that has demonstrated the potential ability to seal a compromised wellbore through the enzymatic precipitation of CaCO3. In this paper, we investigate the growth of S. pasteurii in a synthetic brine that mimics the Illinois Basin and on Mt. Simon sandstone encased in Class H Portland cement under high pressure and supercritical CO2 (PCO2) conditions. The bacterium grew optimum at 30 °C compared to 40 °C under ambient and high pressure (10 MPa) conditions; and growth was comparable in experiments at high PCO2. Sporosarcina pasteurii actively induced the biomineralization of CaCO3 polymorphs and MgCa(CO3)2 in both ambient and high pressure conditions as observed in electron microscopy. In contrast, abiotic (non-biological) samples exposed to CO2 resulted in the formation of surficial vaterite and calcite. Finally, the ability of S. pasteurii to grow under subsurface conditions may be a promising mechanism to enhance wellbore integrity.
- Research Organization:
- National Energy Technology Lab. (NETL), Albany, OR (United States)
- Sponsoring Organization:
- USDOE Office of Fossil Energy (FE)
- OSTI ID:
- 1263589
- Journal Information:
- International Journal of Greenhouse Gas Control, Vol. 49; ISSN 1750-5836
- Publisher:
- ElsevierCopyright Statement
- Country of Publication:
- United States
- Language:
- English
Web of Science
Numerical analysis of a parabolic variational inequality system modeling biofilm growth at the porescale
|
journal | January 2020 |
Similar Records
Real-time monitoring of calcification process by Sporosarcina pasteurii biofilm
Statistical 3D morphology characterization of vaterite microspheres produced by engineered Escherichia coli