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Geochemical Impacts of CO2 Intrusion into Ground Water due to Carbon Dioxide Release from Geologic Sequestration Projects: Overview of ORD Research
Citation:
WILKIN, R. T. Geochemical Impacts of CO2 Intrusion into Ground Water due to Carbon Dioxide Release from Geologic Sequestration Projects: Overview of ORD Research. Presented at The National Energy Technology Laboratory (NETL), Morgantown, PA, August 27, 2009.
Impact/Purpose:
to determine the geochemical impacts of CO2 intrusion into Groundwater
Description:
Abstract: Even with the large physical separation between storage reservoirs and surficial environments, there is concern that CO2 stored in reservoirs may eventually leak back to the surface through abandoned wells or along geological features such as faults. Leakage of CO2 into groundwater could trigger a number of geochemical consequences. For example, CO2 accumulation is expected to result in decreased pH, increased mineral dissolution, and possible mobilization of metal and metalloid contaminants. On the other hand, increases in CO2 concentrations could also result in increased attenuation of certain inorganics and act to retard contaminant migration. An overview of these processes, implications, and research underway will be discussed.