Open access
Autor(in)
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Datum
2013Typ
- Conference Paper
ETH Bibliographie
yes
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Abstract
Research in mineral carbonation has moved towards process concepts that combine the capture of CO2 from flue gas with its conversion into stable carbonates. This requires highly reactive source materials that dissolve under lean CO2 pressures and temperatures. Activated serpentine has been used in this study, and its carbonation potential under flue gas conditions has been investigated. Single-step carbonation experiments were performed in stirred reactors with gas-dip tubes, at partial pressures of CO2 up to 1 bar, temperatures between 30 °C and 90 °C, with and without concurrent grinding using a ball mill. The pH and solids were monitored in-situ, and the degree of carbonation of the products was quantified using thermogravimetric analysis. Given the low CO2 pressure, carbonation was successful, as confirmed by the formation of the two magnesium carbonates nesquehonite and hydromagnesite. However, under all conditions investigated, including grinding, the extent of carbonation did not exceed 20%. It was concluded that after the onset of precipitation, the reactor solution in single-step carbonation experiments reaches equilibrium conditions with respect to both serpentine dissolution and carbonate precipitation. Mehr anzeigen
Persistenter Link
https://doi.org/10.3929/ethz-b-000098658Publikationsstatus
publishedExterne Links
Buchtitel
GHGT-11 Proceedings of the 11th International Conference on Greenhouse Gas Control TechnologiesZeitschrift / Serie
Energy ProcediaBand
Seiten / Artikelnummer
Verlag
ElsevierKonferenz
Thema
Flue Gas mineralization; SINGLE-step carbonation; Activated serpentine; Magensium carbonate; TGA analysisOrganisationseinheit
03484 - Mazzotti, Marco / Mazzotti, Marco
ETH Bibliographie
yes
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