Environmental impacts of CO2 leakage: recent results from the ASGARD facility, UK

Smith, K. L.; Steven, M. D.; Jones, David G.; West, Julia M.; Coombs, P.; Green, K.A.; Barlow, Thomas; Breward, N.; Gwosdz, Simone; Krüger, Martin; Beaubien, S.E.; Annunziatellis, A.; Graziani, Stefano; Lombardi, S.

doi:10.1016/j.egypro.2013.05.169

Cited by 46 publications

(35 citation statements)

References 6 publications

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“…However, after 2 years of CO 2 injection at 1 L min -1 , results were not as clear. There was no obvious impact on total numbers or biomass where CO 2 soil gas concentrations were below 10% at 20 cm (Smith et al, 2013). However, where soil gas concentrations vary between 20-40% at 20-50 cm depth, total numbers of organisms appeared to increase when compared to those observed in the ungassed plot.…”

Section: 3impacts Of Elevated Soil Gas Co 2 Concentrations On Micrmentioning

confidence: 81%

“…Additionally, exposure to elevated concentrations at ASGARD was over shorter time periods (a maximum of 2 years compared to decades of exposure at the natural sites), and thus the plant ecosystem has had less time to adapt to the elevated CO 2 conditions. Nevertheless, when the CO 2 injection rate was higher at ASGARD (3 L min -1 at 60 cm depth) there was a rapid response in plant health with change in leaf colour in a variety of plants within 7-10 days (West et al, 2009;Smith et al, 2013). After 2 years of intermittent gassing, with the injection rate dropping from 3 L min at 60 cm depth) over a 24 month gassing period, with a resulting overall soil gas concentration below 10%, the domination by monocotyledonous plants across the plot was not observed (Figure 14b and c), even after a period of 24 months of gassing (Figure 14b and c).…”

Section: Impacts At Controlled Co 2 Release Site -Asgard Englandmentioning

confidence: 99%

“…Work has also been undertaken at field sites, where CO 2 has been injected into the shallow soil environments, (e.g. ; Keith et al, 2009;Male et al, 2010;Moni and Rasse, 2014;Patil et al, 2010;Smith et al, 2013;Spangler et al, 2010;West et al, 2009;Zhou et al, 2013) and at carbon dioxide storage sites (e.g. Jones et al, 2011).…”

Section: Introductionmentioning

confidence: 99%

“…It evaluates all these results and presents, for the first time, general unified conclusions from these studies, providing CO 2 thresholds where effects on plants and soil microbiology are observed and making recommendations on how this information can be used when planning CO 2 storage projects. The sites include those where CO 2 is being naturally released to the atmosphere from deep geological formations (Florina, Greece (Ziogou et al, 2013); Laacher See, Germany (Krüger et al, 2011); and Latera, Italy; ) and a nonadapted site, with no previous history of CO 2 seepage, where CO 2 has been injected into the unsaturated soil horizon (Artificial Soil Gassing and Response Detection (ASGARD) field site, England) (Smith et al, 2013;West et al, 2009). …”

Section: Introductionmentioning

confidence: 99%

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Comparison of the impacts of elevated CO 2 soil gas concentrations on selected European terrestrial environments

West

Jones

Annunziatellis

et al. 2015

International Journal of Greenhouse Gas Control

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Selected European studies have illustrated the impacts of elevated CO 2 concentrations in shallow soils on pasture. For the first time, general unified conclusions can be made, providing CO 2 thresholds where effects on plants and soil microbiology are observed and making recommendations on how this information can be used when planning projects for CO 2 storage. The sites include those where CO 2 is being naturally released to the atmosphere from deep geological formations; and a non-adapted site, with no previous history of CO 2 seepage, where CO 2 has been injected into the unsaturated soil horizon. Whilst soil gas concentrations will be influenced by flux rates and other factors, the results suggest that a concentration of between 10-15% CO 2 soil gas at 20 cm depth, which is within the root zone, is an important threshold level for observing changes in plant coverage. Site-specific plant 'indicators' are also observed for CO 2 concentrations at ≥35%. Microbiological changes are seen where CO 2 soil gas concentrations are between 15-40%. As part of site characterisation, an evaluation of the risks of leakage and their potential environmental impacts should be undertaken.

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Section: 3impacts Of Elevated Soil Gas Co 2 Concentrations On Micrmentioning

confidence: 81%

Section: Impacts At Controlled Co 2 Release Site -Asgard Englandmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Comparison of the impacts of elevated CO 2 soil gas concentrations on selected European terrestrial environments

West

Jones

Annunziatellis

et al. 2015

International Journal of Greenhouse Gas Control

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“…1 ton y -1 ) from October 2010 to May 2012 (Smith et al 2013). One ungassed plot was used as reference.…”

mentioning

confidence: 99%

Long-term CO₂injection and its impact on near-surface soil microbiology

Gwosdz

West

Jones

et al. 2016

FEMS Microbiology Ecology

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Impacts of long-term CO 2 exposure on environmental processes and microbial populations of near surface soils are poorly understood. This near-surface long-term CO 2 injection study demonstrated that soil microbiology and geochemistry is influenced more by seasonal parameters than elevated CO 2 . Soil samples were taken during a three-year field experiment including sampling campaigns before, during and after 24 months of continuous CO 2 injection. CO 2 concentrations within CO 2 -injected plots increased up to 23% during the injection period. No CO 2 impacts on geochemistry were detected over time. In addition, CO 2 -exposed samples did not show significant changes in microbial CO 2 and CH 4 turnover rates compared to reference samples. Likewise, no significant CO 2 -induced variations were detected for the abundance of Bacteria, Archaea (16S rDNA) and gene copy numbers of the mcrA gene, Crenarchaeota and amoA gene. The majority (75-95%) of the bacterial sequences were assigned into five phyla: Firmicutes, Proteobacteria, Actinobacteria, Acidobacteria and Bacteroidetes. The majority of the archaeal sequences (85-100%) were assigned to the thaumarchaeotal cluster I.1b (soil group). Univariate and multivariate statistical as well as principal component analyses (PCA) showed no significant CO 2 -induced variation. Instead, seasonal impacts especially temperature and precipitation were detected.3

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Experimental and numerical modeling of CO₂ leakage in the vadose zone

Gasparini

Crédoz²,

Grandía

et al. 2015

Greenhouse Gases

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This study presents the experimental and modeling results of CO2 injection and transport in the vadose zone performed in PISCO2 facilities at the ES.CO2 center in Ponferrada (North Spain). During 46 days of experiments, 62.10 kg of CO2 were injected through 16 micro‐injectors in a 35 m3 experimental unit filled with sandy material. Monitoring and mapping of surface CO2 flux were performed periodically to assess the evolution of CO2 migration through the soil and to the atmosphere. Numerical simulations were run using TOUGH2 code with EOS7CA research module considering two phases (gas and liquid) and three components (H2O, CO2, air). Two layers (sand, gravel) and atmosphere boundary were implemented taking into account heterogeneous soils, homogeneous soil, rainfall, temperature, and liquid saturation to allow a better understanding of CO2 behavior in the vadose zone. This combined experimental and modeling approach shows that CO2 leakage in the vadose zone quickly comes out through preferential migration pathways and spots with the ranges of fluxes in the ground/surface interface from 2.5 to 600 g·m−2·day−1. This gas channeling is mainly related to soil compaction and climatic perturbation. This has significant implications for design‐adapted detection and monitoring strategies of early leakage in commercial CO2 storage. © 2015 Society of Chemical Industry and John Wiley & Sons, Ltd

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Environmental impacts of CO2 leakage: recent results from the ASGARD facility, UK

Cited by 46 publications

References 6 publications

Comparison of the impacts of elevated CO 2 soil gas concentrations on selected European terrestrial environments

Comparison of the impacts of elevated CO 2 soil gas concentrations on selected European terrestrial environments

Long-term CO₂injection and its impact on near-surface soil microbiology

Experimental and numerical modeling of CO₂ leakage in the vadose zone

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Environmental impacts of CO2 leakage: recent results from the ASGARD facility, UK

Cited by 46 publications

References 6 publications

Comparison of the impacts of elevated CO 2 soil gas concentrations on selected European terrestrial environments

Comparison of the impacts of elevated CO 2 soil gas concentrations on selected European terrestrial environments

Long-term CO2injection and its impact on near-surface soil microbiology

Experimental and numerical modeling of CO2 leakage in the vadose zone

Contact Info

Product

Resources

About

Long-term CO₂injection and its impact on near-surface soil microbiology

Experimental and numerical modeling of CO₂ leakage in the vadose zone