Assessing the potential consequences of CO2 leakage to freshwater resources: A batch-reaction experiment towards an isotopic tracing tool

Humez, Pauline; Lagneau, Vincent; Lions, Julie; Négrel, Philippe

doi:10.1016/j.apgeochem.2012.07.014

Cited by 68 publications

(47 citation statements)

References 44 publications

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“…This is in agreement with results from low-salinity experiments conducted by Humez et al (2013) who found that Sr isotopes allow for discrimination of mineral alteration pathways (such as glauconite and apatite) during CO 2 -water-rock interactions. Although 87 Sr/ 86 Sr values in the batch reactors cannot readily be distinguished from regional groundwater compositions in the Jurassic sandstones, results suggest that the progressive dissolution of K-bearing feldspars could eventually increase in 87 Sr/ 86 Sr values beyond the regional background.…”

Section: Potential Tracers Of Co 2 Migration In Jurassic Sandstonessupporting

confidence: 92%

“…6) and by other workers (e.g. Little and Jackson, 2010;Lu et al, 2010;Humez et al, 2013;Farquhar et al, 2015-in this issue). In the Jurassic sandstone reactors, Ca 2+ , TDS, and alkalinity rapidly increase as carbonate minerals and cements dissolve under elevated CO 2 pressures.…”

Section: Jurassic Sandstone Batch Reaction Pathwaysmentioning

confidence: 84%

“…Carroll et al, 2009;Keating et al, 2009;Smyth et al, 2009;Little and Jackson, 2010;Lu et al, 2010;Nondorf et al, 2011;Peter et al, 2012;Harvey et al, 2013;Humez et al, 2013;Yang et al, 2014). CO 2 -water-rock studies using ultra-pure distilled water as the reaction fluid indicate geochemical impacts will be more extensive during geological CO 2 storage in lowsalinity formations (e.g.…”

Section: Salinity and Co 2 Storagementioning

confidence: 99%

See 2 more Smart Citations

Characterizing long-term CO 2 –water–rock reaction pathways to identify tracers of CO 2 migration during geological storage in a low-salinity, siliciclastic reservoir system

2015

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Section: Potential Tracers Of Co 2 Migration In Jurassic Sandstonessupporting

confidence: 92%

Section: Jurassic Sandstone Batch Reaction Pathwaysmentioning

confidence: 84%

Section: Salinity and Co 2 Storagementioning

confidence: 99%

See 1 more Smart Citation

Characterizing long-term CO 2 –water–rock reaction pathways to identify tracers of CO 2 migration during geological storage in a low-salinity, siliciclastic reservoir system

2015

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“…Sulphides and carbonates are mainly considered in models (Keating et al, 2010;Navarre-Sitchler et al, 2013;Siirila et al, 2012;Wang and Jaffe, 2004) but sorption on clays and oxides may also affect trace element mobility as they can be a sink or a source (Humez et al, 2013;Viswanathan et al, 2013;Zheng et al, 2012;Zheng et al, 2009). Although sorption processes (ion exchange and complexation surfaces) are not systematically implemented in all codes, they can significantly reduce metal mobility and thus should be considered.…”

Section: Geochemical Modellingmentioning

confidence: 99%

Developments since 2005 in understanding potential environmental impacts of CO2 leakage from geological storage

Jones

Beaubien

Blackford

et al. 2015

International Journal of Greenhouse Gas Control

101

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This paper reviews research into the potential environmental impacts of leakage from geological storage of CO 2 since the publication of the IPCC Special Report on Carbon Dioxide Capture and Storage in 2005. Possible impacts are considered on onshore (including drinking water aquifers) and offshore ecosystems. The review does not consider direct impacts on man or other land animals from elevated atmospheric CO 2 levels. Improvements in our understanding of the potential impacts have come directly from CO 2 storage research but have also benefitted from studies of ocean acidification and other impacts on aquifers and onshore near surface ecosystems. Research has included observations at natural CO 2 sites, laboratory and field experiments and modelling. Studies to date suggest that the impacts from many lower level fault-or well-related leakage scenarios are likely to be limited spatially and temporarily and recovery may be rapid. The effects are often ameliorated by mixing and dispersion of the leakage and by buffering and other reactions; potentially harmful elements have rarely breached drinking water guidelines. Larger releases, with potentially higher impact, would be possible from open wells or major pipeline leaks but these are of lower probability and should be easier and quicker to detect and remediate.

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“…Stable isotopic signatures of injected CO 2 , specifically the changes in carbon stable isotopic ratio of dissolved inorganic carbon (DIC) compared to the background groundwater composition, have been used to detect the CO 2 leakage Schulz et al, 2012;Humez et al, 2013;Yang et al, 2013). In addition to carbon stable isotope, other stable isotopes, such as δ 7 Li, δ 11 B, δ 2 H, δ 18 O, δ 34 S, have been used for studying mixing of freshwater and saltwater, water-rock interaction, and groundwater evolution caused by CO 2 injection and transport (Humez et al, 2014).…”

Section: Monitoring and Data Analysis For Co 2 Leakage Detection And mentioning

confidence: 99%

Shallow groundwater system monitoring on controlled CO2 release sites: a review on field experimental methods and efforts for CO2 leakage detection

Lee

Yun

et al. 2016

Geosci J

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Carbon dioxide capture and sequestration (CCS) is a promising alternative for reduction of greenhouse gas emission. However, injected CO 2 in deep formation has potential to leak into a shallow aquifer. Thus, although it is challenging, development of detection technologies in a shallow aquifer region is essential to assure the long term safety of a CCS project. Recently, field scale experiments were carried out around the world to identify CO 2 leakage and to investigate effects on groundwater quality in shallow aquifers. From the literature, 8 controlled CO 2 release test sites and 9 experimental cases were identified. In those sites, CO 2 was artificially injected around the shallow aquifer region as CO 2 -infused groundwater phase or gas phase for identifying environmental effects caused by CO 2 injection. This paper reviews the hydraulic heterogeneity, mineral compositions, monitoring systems, and environmental parameters required for leakage detection at each site. For constructing a controlled test bed, inclined wells, horizontal wells, and multiple injection wells were identified as reliable injection components. It was also identified that the injected CO 2 migration and its effects were monitored through the constructed monitoring networks. The previous operation cases show that continuous monitoring of pH, electrical conductivity (EC), Ca and Mg concentrations is the most basic and important factor for leakage detection. Trace elements and isotopes were also widely used to determine the CO 2 leakage. The Korea CO 2 Storage Environmental Management (K-COSEM) research center is going to construct an environmental impact test (EIT) facility for developing CO 2 leakage detection methods in a shallow aquifer region in Korea. The challenging issues will include the fate and transport of CO 2 from the fractured zone to the saturated zone and to the unsaturated soil. Based on the lessons learned from the previous tests, environmental monitoring technologies will be developed through the analysis of the time series data of hydrogeochemical parameters for the planned EIT facility in Korea.

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Assessing the potential consequences of CO2 leakage to freshwater resources: A batch-reaction experiment towards an isotopic tracing tool

Cited by 68 publications

References 44 publications

Characterizing long-term CO 2 –water–rock reaction pathways to identify tracers of CO 2 migration during geological storage in a low-salinity, siliciclastic reservoir system

Characterizing long-term CO 2 –water–rock reaction pathways to identify tracers of CO 2 migration during geological storage in a low-salinity, siliciclastic reservoir system

Developments since 2005 in understanding potential environmental impacts of CO2 leakage from geological storage

Shallow groundwater system monitoring on controlled CO2 release sites: a review on field experimental methods and efforts for CO2 leakage detection

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