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Title: Chlorite dissolution kinetics at pH 3–10 and temperature to 275°C

Abstract

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. Here, in order to better predict the geochemical impacts on long-term performance of engineered geothermal systems, we have measured chlorite dissolution and developed a generalized kinetic rate law applicable over an expanded range of solution pH and temperature. Chlorite, (Mg,Al,Fe)12(Si,Al)8O20(OH)16, commonly occurs in many geothermal host rocks as either a primary mineral or alteration product.

Authors:
 [1];  [1]
  1. Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
Publication Date:
Research Org.:
Lawrence Livermore National Laboratory (LLNL), Livermore, CA (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
1345334
Alternate Identifier(s):
OSTI ID: 1397575
Report Number(s):
LLNL-JRNL-680118
Journal ID: ISSN 0009-2541
Grant/Contract Number:  
AC52-07NA27344; LLNL-JOUR-680118
Resource Type:
Accepted Manuscript
Journal Name:
Chemical Geology
Additional Journal Information:
Journal Volume: 421; Journal Issue: C; Journal ID: ISSN 0009-2541
Publisher:
Elsevier
Country of Publication:
United States
Language:
English
Subject:
58 GEOSCIENCES; 15 GEOTHERMAL ENERGY; 37 INORGANIC, ORGANIC, PHYSICAL AND ANALYTICAL CHEMISTRY; chlorite; clinochlore; sheet silicate; phyllosilicate; dissolution; kinetics; reaction affinity; geothermal

Citation Formats

Smith, Megan M., and Carroll, Susan A. Chlorite dissolution kinetics at pH 3–10 and temperature to 275°C. United States: N. p., 2015. Web. doi:10.1016/j.chemgeo.2015.11.022.
Smith, Megan M., & Carroll, Susan A. Chlorite dissolution kinetics at pH 3–10 and temperature to 275°C. United States. https://doi.org/10.1016/j.chemgeo.2015.11.022
Smith, Megan M., and Carroll, Susan A. Wed . "Chlorite dissolution kinetics at pH 3–10 and temperature to 275°C". United States. https://doi.org/10.1016/j.chemgeo.2015.11.022. https://www.osti.gov/servlets/purl/1345334.
@article{osti_1345334,
title = {Chlorite dissolution kinetics at pH 3–10 and temperature to 275°C},
author = {Smith, Megan M. and Carroll, Susan A.},
abstractNote = {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. Here, in order to better predict the geochemical impacts on long-term performance of engineered geothermal systems, we have measured chlorite dissolution and developed a generalized kinetic rate law applicable over an expanded range of solution pH and temperature. Chlorite, (Mg,Al,Fe)12(Si,Al)8O20(OH)16, commonly occurs in many geothermal host rocks as either a primary mineral or alteration product.},
doi = {10.1016/j.chemgeo.2015.11.022},
journal = {Chemical Geology},
number = C,
volume = 421,
place = {United States},
year = {Wed Dec 02 00:00:00 EST 2015},
month = {Wed Dec 02 00:00:00 EST 2015}
}

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Cited by: 13 works
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