<?xml version='1.0' encoding='utf-8'?>
<oai_dc:dc xmlns:dc="http://purl.org/dc/elements/1.1/" xmlns:oai_dc="http://www.openarchives.org/OAI/2.0/oai_dc/" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://www.openarchives.org/OAI/2.0/oai_dc/ http://www.openarchives.org/OAI/2.0/oai_dc.xsd">
  <dc:contributor>Robert J. Rosenbauer</dc:contributor>
  <dc:contributor>James Palandri</dc:contributor>
  <dc:contributor>M. Mercedes Maroto-Valer</dc:contributor>
  <dc:creator>Susana Garcia</dc:creator>
  <dc:date>2011</dc:date>
  <dc:description>&lt;p&gt;&lt;span&gt;Iron-bearing minerals are reactive phases of the subsurface environment and could potentially trap CO&lt;/span&gt;&lt;sub&gt;2&lt;/sub&gt;&lt;span&gt;&amp;ndash;SO&lt;/span&gt;&lt;sub&gt;2&lt;/sub&gt;&lt;span&gt;gas mixtures derived from fossil fuel combustion processes by their conversion to siderite (FeCO&lt;/span&gt;&lt;sub&gt;3&lt;/sub&gt;&lt;span&gt;) and dissolved sulfate. Changes in fluid and mineral compositions resulting from reactions, involving the co-injection of SO&lt;/span&gt;&lt;sub&gt;2&lt;/sub&gt;&lt;span&gt;&lt;span class="Apple-converted-space"&gt;&amp;nbsp;&lt;/span&gt;with CO&lt;/span&gt;&lt;sub&gt;2&lt;/sub&gt;&lt;span&gt;&lt;span class="Apple-converted-space"&gt;&amp;nbsp;&lt;/span&gt;were observed both theoretically and experimentally. Experiments were conducted with a natural&lt;span class="Apple-converted-space"&gt;&amp;nbsp;&lt;/span&gt;&lt;/span&gt;&lt;i&gt;hematite&lt;/i&gt;&lt;span&gt;&lt;span class="Apple-converted-space"&gt;&amp;nbsp;&lt;/span&gt;(&amp;alpha;-Fe&lt;/span&gt;&lt;sub&gt;2&lt;/sub&gt;&lt;span&gt;O&lt;/span&gt;&lt;sub&gt;3&lt;/sub&gt;&lt;span&gt;) sample. A high pressure-high temperature apparatus was used to simulate conditions in geologic formations deeper than 800&amp;nbsp;m, where CO&lt;/span&gt;&lt;sub&gt;2&lt;/sub&gt;&lt;span&gt;&lt;span class="Apple-converted-space"&gt;&amp;nbsp;&lt;/span&gt;is in the supercritical state. Solid samples were allowed to react with a NaCl&amp;ndash;NaOH brine and SO&lt;/span&gt;&lt;sub&gt;2&lt;/sub&gt;&lt;span&gt;-bearing CO&lt;/span&gt;&lt;sub&gt;2&lt;/sub&gt;&lt;span&gt;-dominated gas mixtures. The predicted equilibrium mineral assemblage at 100&amp;nbsp;&amp;deg;C and 250&amp;nbsp;bar became hematite, dawsonite (NaAl(OH)&lt;/span&gt;&lt;sub&gt;2&lt;/sub&gt;&lt;span&gt;CO&lt;/span&gt;&lt;sub&gt;3&lt;/sub&gt;&lt;span&gt;), siderite (FeCO&lt;/span&gt;&lt;sub&gt;3&lt;/sub&gt;&lt;span&gt;) and quartz (SiO&lt;/span&gt;&lt;sub&gt;2&lt;/sub&gt;&lt;span&gt;). Experimentally, siderite and dawsonite, derived from the presence of kaolinite (Al&lt;/span&gt;&lt;sub&gt;2&lt;/sub&gt;&lt;span&gt;Si&lt;/span&gt;&lt;sub&gt;2&lt;/sub&gt;&lt;span&gt;O&lt;/span&gt;&lt;sub&gt;5&lt;/sub&gt;&lt;span&gt;(OH)&lt;/span&gt;&lt;sub&gt;4&lt;/sub&gt;&lt;span&gt;) in the parent material, were present in residual solids at longer reaction time intervals, which agreed well with results from the modelling work.&lt;/span&gt;&lt;/p&gt;</dc:description>
  <dc:format>application/pdf</dc:format>
  <dc:identifier>10.1016/j.egypro.2011.02.486</dc:identifier>
  <dc:language>en</dc:language>
  <dc:publisher>Elsevier</dc:publisher>
  <dc:title>Experimental and simulation studies of iron oxides for geochemical fixation of CO2-SO2 gas mixtures</dc:title>
  <dc:type>article</dc:type>
</oai_dc:dc>