Carbon Capture and Storage (CCS): Risk assessment focused on marine bacteria

Borrero-Santiago, Ana R.; DelValls, T. Ángel; Riba, Inmaculada

doi:10.1016/j.ecoenv.2016.04.020

Cited by 21 publications

(6 citation statements)

References 58 publications

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“…The challenge in the dissolution-based geological storage is the risk of CO 2 leakage into the ocean or back to the atmosphere. 3,4 Consequently, an alternative technique for CO 2 storage is to sequestrate them in a particular geological formation within the gas hydrate stability zone (GHSZ), where CO 2 would form gas hydrates and be safely and stably included for long periods of time. 5,6 Gas hydrates are solid crystalline compounds where water molecules form a cage-like framework encapsulating small gas molecules (such as CH 4 and CO 2 ) inside.…”

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confidence: 99%

“…Especially, CO 2 accounts for more than 60% of the global warming effect due to its huge amount of emission. , Considering the potential impact on the economic development by reducing consumption of fossil fuels, especially in developing countries, CO 2 storage has been a promising approach for carbon control and attracts worldwide interest. The challenge in the dissolution-based geological storage is the risk of CO 2 leakage into the ocean or back to the atmosphere. , Consequently, an alternative technique for CO 2 storage is to sequestrate them in a particular geological formation within the gas hydrate stability zone (GHSZ), where CO 2 would form gas hydrates and be safely and stably included for long periods of time. , …”

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confidence: 99%

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Organics-Coated Nanoclays Further Promote Hydrate Formation Kinetics

Zhao

Liu

Yang

et al. 2021

J. Phys. Chem. Lett.

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A deeper understanding of the kinetics of CO 2 hydrate formation in the complicated natural environment is required for its enhanced sequestration. Here we found that the organics-coated nanoclays enriched in the natural sediments could contribute to a 92% decline of the induction time of hydrate formation. This can be ascribed to the negative charges carried by the organics and the resulting ordered arrangement of the surrounding water molecules. It was, for the first time, proposed that the abundant functional groups from the coating organics could function as a protecting crust enabling the system more resistant to the acidification potentially upon the CO 2 sequestration; besides, the negative charges could help prevent the deposition of the nanoclays via interparticle repulsive forces. These would consequently secure their sustainable promoting effect on hydrate formation. The findings suggest the deposits of gas hydrate a kinetically promising geological setting for the CO 2 sequestration via forming hydrates.

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confidence: 99%

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confidence: 99%

Organics-Coated Nanoclays Further Promote Hydrate Formation Kinetics

Zhao

Liu

Yang

et al. 2021

J. Phys. Chem. Lett.

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“…All these potential risks may provoke negative effects on the environment. Potential impacts on the environment deriving from possible CO2 leakages related to CCS are getting better understood by the scientific community, however, there is still lack of knowledge and data (Almagro-Pastor et al 2015;Borrero-Santiago, DelValls and Riba 2016;Gilfillan et al 2017;Morkner et al 2022).…”

Section: The Precautionary Principle and Ccsmentioning

confidence: 99%

The Application of the Environment Act 2021 Principles to Carbon Capture and Storage

Rutherford¹

2022

Preprint

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Carbon Capture and Storage (CCS) is a new technology considered to have the potential to decarbonise economies. However, nationally and internationally the use of CCS has also been raising concerns about its potential global risks and adverse impacts on the environment. CCS was part of the discussions at the 4th United Nations Environment Assembly (UNEA) in March 2019 and in side-events in the 26th UN Climate Change Conference which took place in Glasgow in November 2021. The UK Government aims to deploy CCS at scale during the 2030s, subject to cost reduction. At the same time the UK Government has recently enacted the Environment Act 2021 which provides a set of five environmental principles: the integration principle, the principle of preventative action, the precautionary principle, the rectification at source principle and the polluter pays principle. This work seeks to analyse the application of the UK environmental law principles to carbon capture and storage policies in the UK and its balance with other considerations. Given the concerns surrounding the use of CCS, the debate about its legality may arise in the UK and in other countries. To this end, this paper initially carries out a systematic review of CCS policy documents to discover the policy considerations which support the development of CCS. It then examines the application of the UK environmental law principles to CCS initiatives and its balance with other considerations, such as reduction of carbon emissions, security of energy supply, economic growth and technological leadership. In doing so, this paper aims at contributing to the debate surrounding recent technological developments which have been utilised to help address climate change and some of the legal challenges emerging through the use of CCS under UK environmental law.

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“…3,4 Specially, unique geological settings like submarine aquifers beneath the caprock layers are expected to be a promising region for CO 2 storage. 5,6 Yet, the risk of uncontrollable CO 2 leakage into the atmosphere hinders its large-scale implementation; 4,7 according to the Intergovernmental Panel on Climate Change, CO 2 leakage would most likely occur along the wellbores bringing crucial risk of CO 2 migration to the surface. 6,8 Even so, the geological storage of CO 2 still shows great potential specially in terms of storage capacity.…”

Section: Introductionmentioning

confidence: 99%

“…Reducing carbon emissions has been an urgent issue in many industrial powers. Consequently, the idea of CO 2 capture and storage is proposed for an efficient CO 2 control. , Specially, unique geological settings like submarine aquifers beneath the caprock layers are expected to be a promising region for CO 2 storage. , Yet, the risk of uncontrollable CO 2 leakage into the atmosphere hinders its large-scale implementation; , according to the Intergovernmental Panel on Climate Change, CO 2 leakage would most likely occur along the wellbores bringing crucial risk of CO 2 migration to the surface. , Even so, the geological storage of CO 2 still shows great potential specially in terms of storage capacity. Of particular interest is to encapsulate CO 2 in a solid phase through forming gas hydrates with local fluids. , Other than a huge volume compressibility of the gas and thus a high storage density determined by the unique molecular structure of gas hydrate, the existence of CO 2 in the form of a solid phase would also enable a broader applicability in terms of site selection where a caprock necessary for a dissolution-based storage technique is no longer requisite .…”

Section: Introductionmentioning

confidence: 99%

Behaviors of CO₂ Hydrate Formation in the Presence of Acid-Dissolvable Organic Matters

Liu

Zhang

Yang

et al. 2021

Environ. Sci. Technol.

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Carbon storage in the form of solid hydrate under seafloor has been considered to be promising for greenhouse gas control. Yet, open issues still remain on the role of the organic matters abundant in marine environments in the kinetics of hydrate formation; of particular interest is the involvement of the acid-dissolvable organic matters accompanying the acidification upon CO2 injection. In this work, the CO2 hydrate formation in the presence of the organic matters was in-situ monitored through the low-field nuclear magnetic resonance technique. It was found that the organic matters could kinetically promote the formation of CO2 hydrate; this effect was further enhanced by the sulfur-containing acid-dissolvable organic matters. Water in the large pores was preferentially consumed; the following water conversion facilitated by the organic matters would result in a fragmentation of the large pores into separated small pores isolated by the hydrate clusters. Consequently, a further enhancement of the gas–water contact is suggested as the existence of substantial hydrate patches could act as a mass transfer barrier. Our findings expand our understandings on the kinetics of CO2 hydrate formation in the presence of the organic matters and indicate the stability zone of gas hydrate a kinetically favorable geological setting for CO2 sequestration.

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Carbon Capture and Storage (CCS): Risk assessment focused on marine bacteria

Cited by 21 publications

References 58 publications

Organics-Coated Nanoclays Further Promote Hydrate Formation Kinetics

Organics-Coated Nanoclays Further Promote Hydrate Formation Kinetics

The Application of the Environment Act 2021 Principles to Carbon Capture and Storage

Behaviors of CO₂ Hydrate Formation in the Presence of Acid-Dissolvable Organic Matters

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Carbon Capture and Storage (CCS): Risk assessment focused on marine bacteria

Cited by 21 publications

References 58 publications

Organics-Coated Nanoclays Further Promote Hydrate Formation Kinetics

Organics-Coated Nanoclays Further Promote Hydrate Formation Kinetics

The Application of the Environment Act 2021 Principles to Carbon Capture and Storage

Behaviors of CO2 Hydrate Formation in the Presence of Acid-Dissolvable Organic Matters

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Product

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Behaviors of CO₂ Hydrate Formation in the Presence of Acid-Dissolvable Organic Matters