Carbon sequestration in ultramafic rocks from The Tablelands and White Hills, Newfoundland, Canada ...

• Main Author: Taylor, Benjamin
• Format: Text
• Language: English
• Published: Memorial University of Newfoundland 2024
• Subjects: Canada; White Hills; Newfoundland
• Online Access: https://dx.doi.org/10.48336/fsbx-0872; https://research.library.mun.ca/15997/

With the rising concentration of atmospheric CO₂ and a better understanding of its effect on global climate, there is increasing interest in developing methods of removing CO₂ from the atmosphere and its long-term storage. CO₂ mineralization is a naturally occurring process within igneous and ultramafic rocks that converts gaseous CO₂ into carbonate minerals. While a promising method, the many factors that affect CO₂ mineralization are not fully understood and require further investigation. This study focused on two ultramafic ophiolites located in Newfoundland, the Tablelands and the White Hills. In this study, field-based CO₂ sequestration experiments were conducted along with laboratory-based CO₂ sequestration experiments using rock samples from the two ophiolites. The field-based experiments recorded the CO₂ sequestration rates of naturally occurring ultra-basic springs with a pH of 11-12. The laboratory experiments varied parameters such as water chemistry, surface area, CO₂ supply, and sampling ...