A set of experiments to assess mineral reactivity in gas-fluid-mineral systems related to geologic sequestration of CO2 were conducted as part of an international multi-lab comparative study. Laboratory rocking autoclave experiments were employed using three different minerals, namely Illite, Labradorite and Siderite with particle size ranging between 100 to 200 �m, to react with a CO2-saturated 15 weight percent NaCl solution at a fluid to rock ratio of 20:1, under constant temperature (80 �C) and pressure (200 bars). The minerals were equilibrated with brine until steady state was reached and reacted with CO2 for up to 22 days. Multiple parameters of the water chemistry were monitored, including bulk cation and anion chemistry, dissolved inorganic carbon, and isotopes. Pre- and post-reaction mineral characterization was also conducted using surface spectroscopic techniques. Preliminary results of the kinetic data from the series of mineral dissolution reactions under CO2 sequestration conditions will be reported.

Geochemical reactions of Illite, Labradorite and Siderite with CO<sub>2</sub>-saturated salt solution under geologic CO<sub>2</sub> storage conditions

243rd National Meeting (2012)

The official archive and repository for all ACS Meetings & Expositions abstracts and select posters or presentations.

Geochemical reactions of Illite, Labradorite and Siderite with CO2-saturated salt solution under geologic CO2 storage conditions

Geochemical reactions of Illite, Labradorite and Siderite with CO₂-saturated salt solution under geologic CO₂ storage conditions