Screening and selection criteria, and characterisation techniques for the geological sequestration of carbon dioxide (CO2)

Bachu, Stefan

doi:10.1533/9781845699581.1.27

Cited by 16 publications

(20 citation statements)

References 32 publications

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“…There has been much research carried out around the world on the potential of CO2 storage in saline aquifers [45], mostly in conjunction with EOR fields (such as the Boundary Dam-Apache case). These studies involve factors such as site selection criteria, site characterisation and future planning [46], as well as the variation of synergic and/or conflicting uses of the subsurface [42,47]. : Some geological storage options for CO2 [48].…”

Section: Saline Aquifersmentioning

confidence: 99%

A review of developments in carbon dioxide storage

et al. 2017

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Carbon capture and storage (CCS) has been identified as an urgent, strategic and essential approach to reduce anthropogenic CO2 emissions, and mitigate the severe consequences of climate change. CO2 storage is the last step in the CCS chain and can be implemented mainly through oceanic and underground geological sequestration, and mineral carbonation. This review paper aims to provide state-of-the-art developments in CO2 storage. The review initially discussed the potential options for CO2 storage by highlighting the present status, current challenges and uncertainties associated with further deployment of established approaches (such as storage in saline aquifers and depleted oil and gas reservoirs) and feasibility demonstration of relatively newer storage concepts (such as hydrate storage and CO2-based enhanced geothermal systems). The second part of the review outlined the critical criteria that are necessary for storage site selection, including geological, geothermal, geohazards, hydrodynamic, basin maturity, and economic, societal and environmental factors. In the third section, the focus was on identification of CO2 behaviour within the reservoir during and after injection, namely injection-induced seismicity, potential leakage pathways, and long-term containment complexities associated with CO2-brine-rock interaction. In addition, a detailed review on storage capacity estimation methods based on different geological media and trapping mechanisms was provided. Finally, an overview of major CO2 storage projects, including their overall outcomes, were outlined. This review indicates that although CO2 storage is a technically proven strategy, the discussed challenges need to be addressed in order to accelerate the deployment of the technology. In addition, beside the necessity of technoeconomic aspects, public acceptance of CO2 storage plays a central role in technology deployment, and the current ethical mechanisms need to be further improved.

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Section: Saline Aquifersmentioning

confidence: 99%

A review of developments in carbon dioxide storage

et al. 2017

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“…Deep saline aquifer sequestration, mineralization with rocks, and coal seam sequestration all seem to be viable options for carbon sequestering. Countries were urged to speed up the phaseout of coal use by 2030 in order to limit the temperature increase <1.5 °C preferably by the end of the century. − CCS in coal might be a practical option for the effective use of un-mineable coal seams …”

Section: Introductionmentioning

confidence: 99%

Kinetics of Gas Phase CO₂ Adsorption on Bituminous Coal from a Shallow Coal Seam

et al. 2022

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This article examines the CO 2 adsorption−desorption kinetics of bituminous coal under low pressure injection (0.5 MPa) in the context of CO 2 sequestration in shallow level coal seams. This study used two different sizes of intact core samples of bituminous samples from seam no. 30 at the Experimental Mine Barbara (EMB) in Katowice, Poland. Manometric adsorption kinetics experiments were conducted on 50 mm dia. 60 mm long coal core samples (referred to as EMB1) and 50 mm dia. 30 mm long coal core samples (referred to as EMB2). The kinetics of adsorption at injection pressures ranging from 0.1 to 0.5 MPa were compared to those at elevated pressures ranging from 0.5 to 4.5 MPa. For the first time, intact sample adsorption−desorption data were fitted in pseudo first order (PFO), pseudo second order (PSO), and Bangham pore diffusion models. The PSO model fits the data better than the PFO model, indicating that bulk pore diffusion, surface interaction, and multilayer adsorption are the ratedetermining steps. Comparing the equilibrium amount of adsorbed (q e ) obtained for the powdered samples (9.06 g of CO 2 /kg of coal at 0.52 MPa) with intact samples (11.68 g/kg at 0.53 MPa and 7.58 g/kg at 0.52 MPa for the intact EMB1 and EMB2 samples) showed the importance of conducting experiments with intact samples. The better fit obtained with the Bangham model for lower pressure equilibrium pressures (up to 0.5 MPa) compared to higher pressure equilibrium pressures (4.5 MPa) indicates that bulk pore diffusion is the rate-determining step at lower pressures and surface interaction takes over at higher pressures. The amount of CO 2 trapped within the coal structure following the desorption experiments strengthens the case for intact bituminous coal samples' pore trapping capabilities.

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“…164,165 Particularly, CO 2 storage capacity can be estimated and classified into theoretical, effective, practical and source-sink matched, as defined by the “Geologic CO 2 storage Resource Capacity Pyramid” classification. 166 This concept estimates CO 2 storage capacity based on physical-geological and engineering/technical limits, legal, regulatory and economic barriers and the presence of matching CO 2 sources. CO 2 storage capacity can also be classified into geological classes: deep saline aquifers, depleted oil and gas reservoirs, and less frequently unmineable coal seams.…”

Section: Cdr Options In Monetmentioning

confidence: 99%

“…CO 2 storage capacity can also be classified into geological classes: deep saline aquifers, depleted oil and gas reservoirs, and less frequently unmineable coal seams. 166 Deep saline aquifers have been generally acknowledged as containing the vast majority of geological CO 2 storage capacity. 164 Globally, when conducted, the capacity and reliability of regional storage assessments vary significantly and may lead to regional storage constraints.…”

Section: Cdr Options In Monetmentioning

confidence: 99%