Kinetics of Chlorite Dissolution at Elevated Temperatures and CO2 Conditions

Abstract
Chlorite dissolution kinetics were measured under far from equilibrium conditions using a mixed-flow reactor over temperatures of 100-275 degrees C at pH values of 3.0-5.7 in a background solution matrix of 0.05 m NaCl. Over this temperature range, magnesium was released congruently with respect to silica. The effect of variable pCO2 levels representative of engineered geothermal systems with CO2 as a heat-exchanging fluid (CO2-EGS) was explored by reacting chlorite with solutions containing a range of dissolved CO2 concentrations (0.1-0.5 M).
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Additional Info

DOE Project Name: Chemical Impact of Elevated CO2 on Geothermal Energy Production
DOE Project Number: AID 19980
DOE Project Lead: Greg Stillman
Last Updated: over a year ago
Jul
2013
Data from July, 2013
Submitted Jul 1, 2013

Lawrence Livermore National Laboratory

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925.423.5694

Authors

Susan A. Carroll
Lawrence Livermore National Laboratory
Megan M. Smith
Lawrence Livermore National Laboratory
Thomas J. Wolery
Lawrence Livermore National Laboratory

Keywords

geothermal, chlorite, kinetics, CO2, temperature

Status

Publicly accessible License 

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