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Carbon capture and storage

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  • UKCCSRC Grant EP/P026214/1. The UKCCSRC Spring Web Series ran from 30th March and running until 10th July 2020 relating to various aspects of carbon capture and storage. For more information see https://ukccsrc.ac.uk/web-series/ukccsrc-spring-web-series/.

  • A two-fluid, small scale numerical ocean model was developed to simulate plume dynamics and increases in water acidity due to leakages of CO2 from potential sub-seabed reservoirs erupting, or pipeline breaching into the North Sea. The location of a leak of such magnitude is unpredictable; therefore, multiple scenarios are modelled with the physiochemical impact measured in terms of the movement and dissolution of the leaked CO2. A correlation for the drag coefficient of bubbles/droplets free rising in seawater is presented and a sub-model to predict the initial bubble/droplet size forming on the seafloor is proposed. With the case studies investigated, the leaked bubbles/droplets fully dissolve before reaching the water surface, where the solution will be dispersed into the larger scale ocean waters. The tools developed can be extended to various locations to model the sudden eruption, which is vital in determining the fate of the CO2 within the local waters. This is a publication in Marine Pollution Bulletin, Marius Dewar et. al. doi:10.1016/j.marpolbul.2013.03.005.

  • The risks associated with the transport and injection of carbon dioxide are reasonably well understood and already borne in the USA. There is a remote possibility that CO2 disposed of underground could leak from a storage reservoir, either through an unidentified migration pathway or as the result of a well failure. The kind of threat that this might represent may be judged by comparison with naturally occurring volcanic CO2 emissions. Diffuse CO2 emissions through the soil or via carbonated springs in volcanic areas do not appear to represent a threat as long as the CO2 is able to disperse into the atmosphere. However, when CO2 is able to build up in enclosed spaces it poses a definite threat. Large CO2 clouds associated with sudden emissions from volcanic vents or craters also pose a lethal threat. However, there appears to be little analogy between such events and any possible leak from a storage reservoir via a natural unidentified migration pathway. Modelling of the development, migration and subsequent dispersal of any CO2 cloud which might arise from a well failure is recommended. doi:10.1016/S0196-8904(96)00276-2. http://www.sciencedirect.com/science/article/pii/S0196890496002762.

  • The data consists of a short project update for the 2015/16 annual report and the final report for the project. The update describes work carried-out on behalf of the 'Fault seal controls on CO2 storage capacity in aquifers' project funded by the UKCCS Research Centre, grant number UKCCSRC-C1-14. The report details the latter stages of the project, the final conclusions and results dissemination throughout the project.

  • This poster on the UKCCSRC Call 1 project Chemical looping for low-cost oxygen production and other applications was presented at the CSLF Call project poster reception, London, 27.06.15. Grant number: UKCCSRC-C1-39. The project is based on the concept of CLOU (chemical looping oxygen uncoupling). Various forms of chemical looping are possible with different degrees of integration between the oxygen release and the thermal energy production cycles. • Most of the CLC and CLOU processes proposed thus far are conducted in a fluidised bed reactor encountering problems of contamination of the oxygen carrier and fuel leakage. • The project has designed a hybrid form of chemical looping that achieves the optimal degree of integration of oxygen release and thermal energy production. • The need for intimate contact between the oxygen carrier and the solid fuel is also avoided.

  • In January 1993, as part of the Joule II Non-nuclear Energy Research Programme, the European Commission initiated a two year study of the potential for the disposal of industrial quantifies of carbon dioxide underground, with a view to reducing emissions to the atmosphere. The participants in the study were the British Geological Survey (UK), TNO Institute of Applied Geoscience (The Netherlands), BRGM (France), CRE Group Ltd (UK), IKU Petroleum Research (Norway), RWE AG (Germany), University of Sunderland Renewable Energy Centre (UK) and Statoil (Norway). The objective of the study was to examine whether carbon dioxide emissions from large point sources such as power stations, could be disposed of safely, economically and with no adverse effects on man and the environment. doi:10.1016/0196-8904(95)00308-8. http://www.sciencedirect.com/science/article/pii/0196890495003088

  • This presentation on the EPSRC project, DiSECCS, was presented at the Cranfield Biannual, 21.04.15. Grant number: Grant number: EP/K035878/1.

  • The RISCS (Research into Impacts and Safety in CO2 Storage) project assessed the potential environmental impacts of leakage from geological CO2 storage. Consideration was given to possible impacts on groundwater resources and on near surface ecosystems both onshore and offshore. The aim of the project was to assist storage site operators and regulators in assessing the potential impacts of leakage so that these could be considered during all phases of a storage project (project design, site characterisation, site operation, post-operation and site abandonment, and following transfer of liability back to the state). A secondary objective was to inform policy makers, politicians and the general public of the feasibility and long-term benefits and consequences of large-scale CO2 capture and storage (CCS) deployment. The Final Report can be downloaded from http://cordis.europa.eu/docs/results/240/240837/final1-riscs-final-report-final.pdf.

  • Many of the research results from the SACS and CO2STORE projects are published in the scientific literature but in a somewhat fragmented form. This report consolidates some of the key findings into a manual of observations and recommendations relevant to underground saline aquifer storage, aiming to provide technically robust guidelines for effective and safe storage of CO2 in a range of geological settings. This will set the scene for companies, regulatory authorities, nongovernmental organisations, and ultimately, the interested general public, in evaluating possible new CO2 storage projects in Europe and elsewhere. The report can be downloaded from http://nora.nerc.ac.uk/2959/.

  • This presentation on the EPSRC project, Process Intensification for Post-combustion Carbon Capture using Rotating Packed Bed through Systems Engineering Techniques, was presented at the Cranfield Biannual, 21.04.15. Grant number: EP/M001458/1.