| Description: |
Concern about the role of greenhouse gases in global climate change has generated interest in sequestering CO2 from fossil-fuel combustion in deep saline formations. In this study scientists compare the equilibrium volumetric requirements of three end-member processes: CO2 stored as a supercritical fluid (structural or stratigraphic trapping); CO2 dissolved in pre-existing brine (solubility trapping); and CO2 solubility enhanced by dissolution of calcite. [Source: ENVIRONMENTAL SCIENCE & TECHNOLOGY]
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