Mineral Carbonation for Carbon Sequestration with Industrial Waste

Carbon dioxide sequestration in cement kiln dust through mineral carbonation.

Carbon sequestration through the formation of carbonates is a potential means to reduce CO2 emissions. Alkaline industrial solid wastes typically have high mass fractions of reactive oxides that may not require preprocessing, making them an attractive source material for mineral carbonation The degree of mineral carbonation achievable in cement kiln dust (CKD) underambienttemperatures and press...

Carbon Sequestration via Mineral Carbonation: Overview and Assessment

This report is being written for the Carbon Sequestration Initiative at the request of two members, GM and ChevronTexaco. The purpose is to give a brief overview and assessment of carbon sequestration by mineral carbonation (referred to as “mineral sequestration” in this report). The assessment is to highlight areas that need development in order for this technology to become commercial, not to...

7 Mineral carbonation and industrial uses of carbon dioxide

Sequestration of Martian CO2 by mineral carbonation

Carbonation is the water-mediated replacement of silicate minerals, such as olivine, by carbonate, and is commonplace in the Earth's crust. This reaction can remove significant quantities of CO2 from the atmosphere and store it over geological timescales. Here we present the first direct evidence for CO2 sequestration and storage on Mars by mineral carbonation. Electron beam imaging and analysi...

Carbon Dioxide Sequestration by Direct Mineral Carbonation: Results from Recent Studies and Current Status

Direct mineral carbonation has been investigated as a process to convert gaseous CO2 into a geologically stable, solid final form. The process utilizes a solution of sodium bicarbonate (NaHCO3), sodium chloride (NaCl), and water, mixed with a mineral reactant, such as olivine (Mg2SiO4) or serpentine [Mg3Si2O5(OH)4]. Carbon dioxide is dissolved into this slurry, by diffusion through the surface ...