B2 Sigurður Reynir Gíslason Mineralisation of gas mixtures in basaltic rocks
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Mineralisation of gas mixtures in basaltic rocks S.R. GISLASON 1 , I. GUNNARSSON 2 , B.M. JÚLÍUSSON 2 , D. CLARK 1 , S.Ó SNÆBJÖRNSDÓTTIR 1 , E.S. ARADOTTIR 2 , E. GUNNLAUGSSON 2 , B. SIGFUSSON 2,9 , M. STUTE 3 , J.M. MATTER 3 , W.S. BROECKER 3 , M.TH. ARNARSSON 5 , K. DIDERIKSEN 6 , J. OLSSON 6 and E.H. OELKERS 7,8 1 Institute of Earth Sciences, University of Iceland. 2 Reykjavik Energy, Iceland. 3 Lamont-Doherty Earth Observatory, NY, USA. 4 Ocean and Earth Science, University of Southampton, UK. 5 Mannvit, Iceland. 6 Nano-Science Center, University of Copenhagen, Denmark. 7 LMTG-Université de Toulouse-CNRS-IRD-OMP France. 8 Earth Science, University College London, UK. 9 European Commission, Institute for Energy and Transport, The Netherlands GEORG 2016
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Transcript of B2 Sigurður Reynir Gíslason Mineralisation of gas mixtures in basaltic rocks
Mineralisation of gas mixtures in basaltic rocks
S.R. GISLASON1, I. GUNNARSSON2, B.M. JÚLÍUSSON2, D. CLARK1, S.Ó SNÆBJÖRNSDÓTTIR1, E.S. ARADOTTIR2, E. GUNNLAUGSSON2, B. SIGFUSSON2,9, M. STUTE3, J.M. MATTER3,
W.S. BROECKER3, M.TH. ARNARSSON5, K. DIDERIKSEN6, J. OLSSON6 and E.H. OELKERS7,8
1Institute of Earth Sciences, University of Iceland. 2Reykjavik Energy, Iceland. 3Lamont-Doherty Earth Observatory, NY, USA. 4Ocean and Earth Science, University of Southampton, UK. 5Mannvit, Iceland. 6Nano-Science Center, University of Copenhagen, Denmark.
7LMTG-Université de Toulouse-CNRS-IRD-OMP France. 8Earth Science, University College London, UK. 9European Commission, Institute for Energy and Transport, The Netherlands
GEORG 2016
About 80 Gt reduction in CO2 emission via carbon capture and storage (CCS)
is needed before year 2050 in a 2°C emission budget
IEA, 2015. Energy technology perspectives 2015, Paris: OECD/IEA. 2DS = 2°C Scenario
Gislason and Oelkers, Science 2014
Sigfússon et al., IJGGC 2015
The CarbFix1 method
CO2(g) + H2O = H2CO3(aq)
H2CO3 = HCO3- + H+
HCO3- = CO3
2- + H+
Dissolution reactions:
Basaltic rock + xH+ …..→ Mg2+ + Ca2+ + Fe2+ + Al 3++SiO2(aq)….
Precipitation reactions:
Ca2+ + CO32- → CaCO3
calcite, (siderite, magnesite……)
“calcite”
Dissolution reactions:
Basaltic rock + xH+ → Mg2+ + Ca2+ + Fe2+ + Al3++SiO2(aq)….
Precipitation reactions:
Fe2+ + S2- → FeS (s)
Pyrite (FeS2) – pyrrhotite(Fe1-xSx) simplified reaction
H2S(g) = H2S(aq)
H2S(aq) = HS- + H+
HS- = S2- + H+H2S gas
bubbles
CO2 H2S
“pyrite”
CO2 and H2S gas mixed with
conservative volatile tracers,
SF6 and SF5CF3
The Hellisheiði Power
Plant:
Injected 175 tonnes of
pure CO2 in January-
March 2012
Injected 73 tonnes of
CO2-H2S-H2 gas mixture
(75%-24%-1%) in June-
August 2012
Water pumped to the
injection site and the carbon
was labeled with14C
2 kg/s of water
pumped out of the first
monitoring well
Temperature 20-50°C.
Distance 125 m at 520
m depth.
Matter et al. Science 2016
Matter et al. Science 2016
