|About this Abstract
||2016 TMS Annual Meeting & Exhibition
||Energy Technologies and Carbon Dioxide Management
||Optimizing the Ex Situ Carbonation of Ophiolitic Rocks via Ball Milling
||Ioannis Rigopoulos, Michalis A. Vasiliades, Ioannis Ioannou, Angelos M. Efstathiou, Theodora Kyratsi
|On-Site Speaker (Planned)
Ex situ mineral carbonation appears to be a very promising process to mitigate rising concentrations of anthropogenic CO2 emissions. This method has the potential to safely store CO2 as stable carbonate minerals, and thus could contribute to the slowdown of global warming. This study investigates the effectiveness of selected ophiolitic rocks as a source for the ex situ sequestration of CO2. Emphasis is also placed on the potential use of wastes from quarries for the carbonation process. Taking into account that the major challenge of ex situ carbonation is the need to accelerate the rate of carbonate mineral formation and to enhance the final CO2 uptake, the ball milling process was applied to the ophiolitic lithotypes. Through selective CO2 chemisorption followed by temperature-programmed desorption (CO2-TPD) experiments in the presence or absence of water, we show that ball milling leads to a significant increase of the CO2 uptake of ophiolitic lithologies.
||Planned: A print-only volume