12.07.12, 16:00 – 17:30 Uhr
- Jens Birkholzer
Earth Sciences Division, Lawrence Berkeley National Laboratory
Berkeley, CA, USA
Capturing carbon dioxide (CO2) emissions from industrial sources and injecting them into deep geologic formations is one of several options being considered to control CO2 concentrations in the atmosphere. Sequestering CO2 underground is not without its own set of environmental risks, including the potential for CO2 migration from the storage reservoir into potable groundwater. Although the risk of fluid migration from the storage reservoir is considered to be very small with proper site selection and regulatory oversight, the potential severity of the impact on potable groundwater resources warrants further study. This presentation discusses an integrated experimental and modeling study conducted for a confined sand aquifer in Mississippi. The field component of this study involves the controlled release of groundwater containing dissolved CO2 into the aquifer over a period of several months. The presentation touches on the extensive laboratory and field characterization of groundwater and sediments, an innovative fluid-delivery system, hydrologic monitoring, geophysical monitoring for remote detection of dissolved CO2, and reactive transport modeling to design the laboratory and field experiments and interpret the results.
Pfaffenwaldring 61, Raum U1.003 (MML), Universität Stuttgart