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Article Dans Une Revue Materials Année : 2019

An Enhanced Carbon Capture and Storage Process (e-CCS) Applied to Shallow Reservoirs Using Nanofluids Based on Nitrogen-Rich Carbon Nanospheres

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The implementation of carbon capture and storage process (CCS) has been unsuccessful to date, mainly due to the technical issues and high costs associated with two main stages: (1) CO 2 separation from flue gas and (2) CO 2 injection in deep geological deposits, more than 300 m, where CO 2 is in supercritical conditions. This study proposes, for the first time, an enhanced CCS process (e-CCS), in which the stage of CO 2 separation is removed and the flue gas is injected directly in shallow reservoirs located at less than 300 m, where the adsorptive phenomena control CO 2 storage. Nitrogen-rich carbon nanospheres were used as modifying agents of the reservoir porous texture to improve both the CO 2 adsorption capacity and selectivity. For this purpose, sandstone was impregnated with a nanofluid and CO 2 adsorption was evaluated at different pressures (atmospheric pressure and from 3 × 10 −3 MPa to 3.0 MPa) and temperatures (0, 25, and 50 • C). As a main result, a mass fraction of only 20% of nanomaterials increased both the surface area and the molecular interactions, so that the increase of adsorption capacity at shallow reservoir conditions (50 • C and 3.0 MPa) was more than 677 times (from 0.00125 to 0.9 mmol g −1).
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hal-02357801 , version 1 (10-11-2019)

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Elizabeth Rodriguez Acevedo, Farid B. Cortés, Camilo A Franco, Francisco Carrasco-Marín, Agustín F Pérez-Cadenas, et al.. An Enhanced Carbon Capture and Storage Process (e-CCS) Applied to Shallow Reservoirs Using Nanofluids Based on Nitrogen-Rich Carbon Nanospheres. Materials, 2019, 12 (13), pp.2088. ⟨10.3390/ma12132088⟩. ⟨hal-02357801⟩
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