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In this work, the impact of brine leakage on freshwater aquifer quality was examined in terms of water quality standards for drinking water and plant yield reductions due to irrigation with saline waters. These hazards were assessed through a statistical analysis of saline aquifers geochemistry, and applying a simple freshwater-brine mixing model. The impact of CO2 leakage on carbonate aquifers was addressed by conducting a series of pressurized experiments. In these experiments, natural carbonate rocks of different compositions were reacted in water under high partial-pressures of CO2, and the dissolution products analyzed for trace metals. To gain insight into the sources of released metals, the pressurized experiments were coupled with thorough characterization of mineralogy and trace element content in the rocks. 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These hazards were assessed through a statistical analysis of saline aquifers geochemistry, and applying a simple freshwater-brine mixing model. The impact of CO2 leakage on carbonate aquifers was addressed by conducting a series of pressurized experiments. In these experiments, natural carbonate rocks of different compositions were reacted in water under high partial-pressures of CO2, and the dissolution products analyzed for trace metals. To gain insight into the sources of released metals, the pressurized experiments were coupled with thorough characterization of mineralogy and trace element content in the rocks. The experimental work was supplemented with geochemical modeling, both equilibrium and kinetic (predictive).","abstract_has_math":false,"creators":["Wunsch, Assaf"],"institution":"Colorado School of Mines. 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