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- 01J6CS3KA9XZ8MHVJ56JAW7MXJ classification C3.
- 01J6CS3KA9XZ8MHVJ56JAW7MXJ date "2024".
- 01J6CS3KA9XZ8MHVJ56JAW7MXJ language "eng".
- 01J6CS3KA9XZ8MHVJ56JAW7MXJ type conference.
- 01J6CS3KA9XZ8MHVJ56JAW7MXJ subject "Earth and Environmental Sciences".
- 01J6CS3KA9XZ8MHVJ56JAW7MXJ presentedAt urn:uuid:e326585c-8dd0-4746-8603-f52d76acc162.
- 01J6CS3KA9XZ8MHVJ56JAW7MXJ abstract "Olivine ((Mg, Fe)2SiO4) has received significant attention as a potential feedstock for enhanced silicate weathering (ESW), a technique to remove carbon dioxide (CO2) from the atmosphere at ambient conditions[1]. However, assessing olivine dissolution solely via water chemistry may not be sufficient due to the slow dissolution kinetics of olivine at low temperatures, where it does not release sufficient Mg2+ and silica in detectable quantities especially in solutions such as seawater. Therefore, we present weathering investigations of an olivine grain using laboratory X-ray micro-computed tomography (XCT) located at UGCT (Ghent University, Belgium). The weathering experiment was conducted by subjecting olivine grains in acidic 1M HCl solution for 12.5 days while imaging at four-time steps. Qualitative investigation revealed shrinkage of the olivine grain while quantitative analysis presents a volume decrement, suggesting the occurrence of dissolution over time. XCT facilitated bulk dissolution rate calculation from volume and surface area evolution through dissolution process. Additionally, local dissolution rates over the olivine surface was computed from surface retreat due to dissolution, allowing the calculation of the reactivity map to compare surface reactivity before weathering[2]. Furthermore, we utilize the image processing workflow to measure olivine grain-pack dissolution during ESW application[3], which can be applied for measuring, reporting and verifying (MRV) of ocean alkalinization. [1] Montserrat, F., Renforth, P., Hartmann, J., Leermakers, M., Knops, P., & Meysman, F. J. (2017). Olivine dissolution in seawater: implications for CO2 sequestration through enhanced weathering in coastal environments. Environmental Science & Technology, 51(7), 3960-3972. [2] Winardhi, C. W., Godinho, J. R. D. A., & Gutzmer, J. (2023). The Effect of Macroscopic Particle Features on Mineral Dissolution. Minerals, 13(2), 253. [3] Kularatne, K., Fiers, G., Winardhi, C. W., Wallis, D., Meysman, F.J., & Cnudde, V. (2024). Long-term weathering of olivine in ambient seawater: Implications for ocean alkalinity enhancement in coastal environments. Geochimica et Cosmochimica Acta. (under review). Acknowledgment We would like to acknowledge the Ghent University Special Research Fund (BOF-UGent) for the support to UGent Core Facility UGCT (BOF.COR.2022.0009), the FWO-SBO project – Negative emissions through enhanced mineral weathering in coastal zone (S000619N) and EXCITE Network – Transnational Access (TNA) (EU H2020-101005611).".
- 01J6CS3KA9XZ8MHVJ56JAW7MXJ author 35EA3614-F0EE-11E1-A9DE-61C894A0A6B4.
- 01J6CS3KA9XZ8MHVJ56JAW7MXJ author 551ffef8-a284-11ed-9cd4-b870109b60d9.
- 01J6CS3KA9XZ8MHVJ56JAW7MXJ author F64E9522-F0ED-11E1-A9DE-61C894A0A6B4.
- 01J6CS3KA9XZ8MHVJ56JAW7MXJ author c73e9b5c-148e-11ea-91d1-f32455d576ea.
- 01J6CS3KA9XZ8MHVJ56JAW7MXJ author urn:uuid:08b275ff-99f1-4f22-bb7e-eba11e297b79.
- 01J6CS3KA9XZ8MHVJ56JAW7MXJ dateCreated "2024-08-28T15:19:15Z".
- 01J6CS3KA9XZ8MHVJ56JAW7MXJ dateModified "2025-02-11T15:13:56Z".
- 01J6CS3KA9XZ8MHVJ56JAW7MXJ name "Monitoring of olivine weathering using 4D X-ray micro-computed tomography".
- 01J6CS3KA9XZ8MHVJ56JAW7MXJ pagination urn:uuid:4249023d-dfbb-4156-ab63-a2302e750de5.
- 01J6CS3KA9XZ8MHVJ56JAW7MXJ sameAs LU-01J6CS3KA9XZ8MHVJ56JAW7MXJ.
- 01J6CS3KA9XZ8MHVJ56JAW7MXJ sourceOrganization urn:uuid:14c7ee81-edc0-44e5-a9c1-e308eff38324.
- 01J6CS3KA9XZ8MHVJ56JAW7MXJ type C3.