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<OAI-PMH schemaLocation=http://www.openarchives.org/OAI/2.0/ http://www.openarchives.org/OAI/2.0/OAI-PMH.xsd> <responseDate>2018-01-15T18:31:57Z</responseDate> <request identifier=oai:HAL:hal-01115284v1 verb=GetRecord metadataPrefix=oai_dc>http://api.archives-ouvertes.fr/oai/hal/</request> <GetRecord> <record> <header> <identifier>oai:HAL:hal-01115284v1</identifier> <datestamp>2018-01-11</datestamp> <setSpec>type:ART</setSpec> <setSpec>subject:sdu</setSpec> <setSpec>collection:ENS-LYON</setSpec> <setSpec>collection:INSU</setSpec> <setSpec>collection:UNIV-PARIS7</setSpec> <setSpec>collection:CNRS</setSpec> <setSpec>collection:GM</setSpec> <setSpec>collection:LGL-TPE</setSpec> <setSpec>collection:AGROPOLIS</setSpec> <setSpec>collection:IPGP</setSpec> <setSpec>collection:USPC</setSpec> <setSpec>collection:UNIV-AG</setSpec> <setSpec>collection:B3ESTE</setSpec> <setSpec>collection:UNIV-MONTPELLIER</setSpec> </header> <metadata><dc> <publisher>HAL CCSD</publisher> <title lang=en>CO2 geological storage in olivine rich basaltic aquifers: New insights from reactive-percolation experiments</title> <creator>PEUBLE, Steve</creator> <creator>Godard, Marguerite</creator> <creator>Luquot, Linda</creator> <creator>Andreani, Muriel</creator> <creator>Martinez, Isabelle</creator> <creator>Gouze, Philippe</creator> <contributor>Géosciences Montpellier ; Université des Antilles et de la Guyane (UAG) - Institut national des sciences de l'Univers (INSU - CNRS) - Université de Montpellier (UM) - Centre National de la Recherche Scientifique (CNRS)</contributor> <contributor>Manteau et Interfaces ; Géosciences Montpellier ; Université des Antilles et de la Guyane (UAG) - Institut national des sciences de l'Univers (INSU - CNRS) - Université de Montpellier (UM) - Centre National de la Recherche Scientifique (CNRS) - Université des Antilles et de la Guyane (UAG) - Institut national des sciences de l'Univers (INSU - CNRS) - Université de Montpellier (UM) - Centre National de la Recherche Scientifique (CNRS)</contributor> <contributor>IDAEA, Geosciences, CSIC, Barcelona</contributor> <contributor>Laboratoire de Géologie de Lyon - Terre, Planètes, Environnement [Lyon] (LGL-TPE) ; École normale supérieure - Lyon (ENS Lyon) - Université Claude Bernard Lyon 1 (UCBL) - Institut national des sciences de l'Univers (INSU - CNRS) - Centre National de la Recherche Scientifique (CNRS)</contributor> <contributor>Institut de Physique du Globe de Paris (IPGP) ; Institut national des sciences de l'Univers (INSU - CNRS) - IPG PARIS - Université Paris Diderot - Paris 7 (UPD7) - Université de la Réunion (UR) - Centre National de la Recherche Scientifique (CNRS)</contributor> <contributor>Transferts en milieux poreux ; Géosciences Montpellier ; Université des Antilles et de la Guyane (UAG) - Institut national des sciences de l'Univers (INSU - CNRS) - Université de Montpellier (UM) - Centre National de la Recherche Scientifique (CNRS) - Université des Antilles et de la Guyane (UAG) - Institut national des sciences de l'Univers (INSU - CNRS) - Université de Montpellier (UM) - Centre National de la Recherche Scientifique (CNRS)</contributor> <description>International audience</description> <source>ISSN: 0883-2927</source> <source>Applied Geochemistry</source> <publisher>Elsevier</publisher> <identifier>hal-01115284</identifier> <identifier>https://hal.archives-ouvertes.fr/hal-01115284</identifier> <source>https://hal.archives-ouvertes.fr/hal-01115284</source> <source>Applied Geochemistry, Elsevier, 2015, 52, pp.174-190. 〈10.1016/j.apgeochem.2014.11.024〉</source> <identifier>DOI : 10.1016/j.apgeochem.2014.11.024</identifier> <relation>info:eu-repo/semantics/altIdentifier/doi/10.1016/j.apgeochem.2014.11.024</relation> <language>en</language> <subject lang=en>CO2 geological storage</subject> <subject>[SDU.STU.GC] Sciences of the Universe [physics]/Earth Sciences/Geochemistry</subject> <type>info:eu-repo/semantics/article</type> <type>Journal articles</type> <description lang=en>To test the impact of fluid flow on the reactivity of porous (ultra-)mafic rocks, reactive percolation experiments were realized during which CO2-enriched water was injected at two different injection rates (Q = 0.1 and 1 mL h−1) through sintered analogues of olivine-accumulation zones in basaltic flows at temperature and fluid composition conditions (T = 180 °C; NaHCO3 buffered solution) favorable for CO2-mineralization (carbonation).All experiments resulted in silicate dissolution, carbonate precipitation upstream and (proto-)serpentine formation downstream indicating a decrease in the fluid reactivity along flow paths. The measured bulk carbonation rates ranged from 4 to 7 × 10−8 s−1; these values were significantly lower than previously published values of olivine carbonation rate obtained on powders in closed batch and flow-through reactors. Our study show complex couplings, at pore scale, between fluid flow, localization of reaction zones, and chemical reaction kinetics which in turn control hydrodynamic properties, carbonation rate and efficiency and fluid reactivity. This results in carbonation rates being higher when injection rates are high and permeability ultimately controlling carbonation reactions by limiting fluid input. During experiments, notable changes in permeability occurred for only minor changes in porosity indicating a control by the geometry of the porous network: heterogeneities in the distribution of flow paths favored the localization of precipitated minerals which in turn resulted in the closure of flow paths. This mechanism was particularly efficient at low injection rates. These results imply that controlling the injection rate could allow enhancing/limiting the efficiency of in situ carbonation.</description> <date>2015-01</date> </dc> </metadata> </record> </GetRecord> </OAI-PMH>