Chlorite, Biotite, Illite, Muscovite and Feldspar Dissolution Kinetics at Variable pH and Temperatures up to 280 deg C

Carroll, Susan; Smith, Megan M.; Lammers, Kristin

doi:10.15121/1441454

Title: Chlorite, Biotite, Illite, Muscovite and Feldspar Dissolution Kinetics at Variable pH and Temperatures up to 280 deg C

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Abstract

Chemical reactions pose an important but poorly understood threat to EGS long-term success because of their impact on fracture permeability. This report summarizes the dissolution rate equations for layered silicates where data were lacking for geothermal systems. Here we report updated rate laws for chlorite (Carroll and Smith 2013), biotite (Carroll and Smith, 2015), illite (Carroll and Smith, 2014), and for muscovite. Also included is a spreadsheet with rate data and rate equations for use in reactive transport simulators.

Authors:: Carroll, Susan; Smith, Megan M.; Lammers, Kristin

Publication Date:: Fri Feb 24 00:00:00 EST 2017

Other Number(s):: 910

DOE Contract Number:: FY14 AOP 1422

Research Org.:: USDOE Geothermal Data Repository (United States); Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)

Sponsoring Org.:: USDOE Office of Energy Efficiency and Renewable Energy (EERE), Geothermal Technologies Program (EE-2C)

Collaborations:: Lawrence Livermore National Laboratory

Subject:: 15 Geothermal Energy

Keywords:: geothermal; energy; kinetic data; illite; muscovite; feldspar; chlorite; biotite; geochemistry; chemistry; fracture permeability; success; dissolution; rate equations; kinetics; egs; enhanced geothermal systems

Geolocation:: 36.953627996023,-118.5191|33.998258304661,-118.5191|33.998258304661,-121.24360820313|36.953627996023,-121.24360820313|36.953627996023,-118.5191

OSTI Identifier:: 1441454

DOI:: https://doi.org/10.15121/1441454

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                    Carroll, Susan, Smith, Megan M., and Lammers, Kristin. Chlorite, Biotite, Illite, Muscovite and Feldspar Dissolution Kinetics at Variable pH and Temperatures up to 280 deg C.  United States: N. p., 2017. 
        Web.  doi:10.15121/1441454.

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                    Carroll, Susan, Smith, Megan M., & Lammers, Kristin. Chlorite, Biotite, Illite, Muscovite and Feldspar Dissolution Kinetics at Variable pH and Temperatures up to 280 deg C.  United States.  doi:https://doi.org/10.15121/1441454

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                    Carroll, Susan, Smith, Megan M., and Lammers, Kristin. 2017.  
"Chlorite, Biotite, Illite, Muscovite and Feldspar Dissolution Kinetics at Variable pH and Temperatures up to 280 deg C".  United States.  doi:https://doi.org/10.15121/1441454.  https://www.osti.gov/servlets/purl/1441454. Pub date:Fri Feb 24 00:00:00 EST 2017

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@article{osti_1441454,

  title        = {Chlorite, Biotite, Illite, Muscovite and Feldspar Dissolution Kinetics at Variable pH and Temperatures up to 280 deg C},

  author       = {Carroll, Susan and Smith, Megan M. and Lammers, Kristin},

  abstractNote = {Chemical reactions pose an important but poorly understood threat to EGS long-term success because of their impact on fracture permeability. This report summarizes the dissolution rate equations for layered silicates where data were lacking for geothermal systems. Here we report updated rate laws for chlorite (Carroll and Smith 2013), biotite (Carroll and Smith, 2015), illite (Carroll and Smith, 2014), and for muscovite. Also included is a spreadsheet with rate data and rate equations for use in reactive transport simulators.},

  doi          = {10.15121/1441454},

  journal      = {},

  number       = ,

  volume       = ,

  place        = {United States},

  year         = {Fri Feb 24 00:00:00 EST 2017},

  month        = {Fri Feb 24 00:00:00 EST 2017}

}

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DOI: https://doi.org/10.15121/1441454

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Similar records in DOE Data Explorer and OSTI.GOV collections:

Chlorite, Biotite, Illite, Muscovite, and Feldspar Dissolution Kinetics at Variable pH and Temperatures up to 280 C

Technical Report Carroll, S. ; Smith, M. ; Lammers, K.

Summary Sheet silicates and clays are ubiquitous in geothermal environments. Their dissolution is of interest because this process contributes to scaling reactions along fluid pathways and alteration of fracture surfaces, which could affect reservoir permeability. In order to better predict the geochemical impacts on long-term performance of engineered geothermal systems, we have measured chlorite, biotite, illite, and muscovite dissolution and developed generalized kinetic rate laws that are applicable over an expanded range of solution pH and temperature for each mineral. This report summarizes the rate equations for layered silicates where data were lacking for geothermal systems.
Illite Dissolution Rates and Equation (100 to 280 dec C)

Dataset Carroll, Susan

The objective of this suite of experiments was to develop a useful kinetic dissolution expression for illite applicable over an expanded range of solution pH and temperature conditions representative of subsurface conditions in natural and/or engineered geothermal reservoirs. Using our new data, the resulting rate equation is dependent on both pH and temperature and utilizes two specific dissolution mechanisms (a “neutral” and a “basic” mechanism). The form of this rate equation should be easily incorporated into most existing reactive transport codes for to predict rock-water interactions in EGS shear zones.
Sustainable self-propping shear zones in EGS: Chlorite, Illite, and Biotite Rates and Report

Dataset Carroll, Susan

Spreadsheet containing chlorite, illite, and biotite rate data and rate equations that can be used in reactive transport simulations. Submission includes a report on the development of the rate laws.
Chlorite Dissolution Kinetics at Variable pH and Temperatures up to 275C

Technical Report Carroll, S ; Smith, M
Illite dissolution kinetics from 100 to 280 °C and pH 3 to 9

Journal Article Smith, Megan M. ; Dai, Zurong ; Carroll, Susan A. - Geochimica et Cosmochimica Acta

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