Carbon capture: : the added values of mineral carbonation
- Autores: Antonio Torrisi
- Localización: Industrial Minerals, ISSN 0019-8544, Nº. 563, 2014 (Ejemplar dedicado a: Agosto)
- Idioma: inglés
- Texto completo no disponible (Saber más ...)
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Resumen
IPCC's figures show that AMC, using ground olivine dissolved in an aqueous solution of sodium chloride and sodium bicarbonate, and in contact with high pressure CO[subscript]2, recovered a maximum of 81% CO[subscript]2 in one hour, at a temperature of 185[superscript]o C and a CO[subscript]2 partial pressure of 150 bar.
A study from the US Department of Energy (DoE) on energy and economic costs on high-temperature and high-pressure flow-loop reactors, shows that costs range from $55/tonne of CO[subscript]2 stored for olivine with standard pre-treatment, to $64/tonne of CO[subscript]2 stored for activated wollastonite, with a percentage of CO[subscript]2 conversion after one hour varying between 61% and 82%.
"We calculated the CO[subscript]2 efficiency for mineral sequestration in mafic and ultramafic rocks, considering mining, crushing, grinding, transportation and application for most agricultural areas, globally. If the closest locations of identified sources are used, the CO[subscript]2 balance is always positive," [Jens Hartmann] told IM.
