Postgraduate research students

My research explores the use of mafic, intermediate, and felsic rocks as feedstocks for CO₂ sequestration. This study will help determine what factors may lead to CO₂ mineralization in rocks that have previously been ignored in this field of work. This will help further understand the fundamentals of carbonation reactions and will have further implications for the development of carbon capture and storage technologies that reverse the damaging effects of climate change.  

Stubbs, A. R., Paulo, C., Power, I. M., Wang, B., Zeyen, N., & Wilson, S. A. (2022). Direct measurement of CO₂ drawdown in mine wastes and rock powders: Implications for enhanced rock weathering. International Journal of Greenhouse Gas Control, 113, 103554.

Power, I. M., Paulo, C., Long, H., Lockhart, J. A., Stubbs, A. R., French, D., & Caldwell, R. (2021). Carbonation, Cementation, and Stabilization of Ultramafic Mine Tailings. Environmental Science & Technology, 55(14), 10056-10066.

Paulo, C., Power, I. M., Stubbs, A. R., Wang, B., Zeyen, N., & Wilson, S. A. (2021). Evaluating feedstocks for carbon dioxide removal by enhanced rock weathering and CO₂ mineralization. Applied Geochemistry, 129, 104955.

• Dr John MacDonald
• Dr Iain Neill

IAPETUS2 DTP

Oral presentations († indicates an invited talk)

Power, I.M., Paulo C., Stubbs A.R., Rausis, K., McDonald D.T.E., Lockhart, J.A., and Schaffer, Z.R. (2022) CO₂ removal rates using mine wastes and mineral powders. Geochemical Carbon Dioxide Removal – Research in Progress Meeting, May 19, 20, 23. (Invited)

Stubbs, A.R. †, Paulo, C., Power, I.M., Wang, B., Zeyen, N., and Wilson, S. (2021). Direct measurement of CO₂ fluxes into kimberlite residues and powdered rocks: Implications for enhanced rock weathering. Goldschmidt Virtual. July 4-9. 

Zeyen, N., Wang, B., Wilson, S.A., Paulo, C., Stubbs, A.R., Power, I.M., Turvey, C., and Dipple, G.M. (2021). Mineral carbonation at Venetia and Gahcho Kue (diamond) mines: Characterization of the highly reactive clay fraction. Goldschmidt Virtual. July 4-9. 

Paulo, C., Power, I.M., Stubbs, A.R., Senzani, K., Ndlovu, S., Vietti, A., and May, H. (2021). Effects of mineral reactivity and seasonality on enhanced rock weathering of kimberlite mine residues. Goldschmidt Virtual. July 4-9.  

McDonald, D.T.E., Power, I.M., Paulo, C., and Stubbs, A.R. (2021). Assessment of the carbon balance and CO₂ mineralization of alkaline mineral feedstocks through enhanced rock weathering. Goldschmidt Virtual. July 4-9.

Lockhart, J., Power, I.M., Paulo, C., Long, H., and Stubbs, A.R. (2021). Carbonation, cementation, and stabilization of ultramafic mine tailings through microbial CO₂ generation. Goldschmidt Virtual. July 4-9.

Stubbs, A.R., Paulo, C., Power, I.M., Zeyen, N., and Wilson, S. (2020). Enhanced weathering and carbonation of kimberlite residues from South African Mines. Goldschmidt Virtual. June 21-26.

Paulo, C., Power, I.M., Stubbs, A.R., Zeyen, N., and Wilson, S.A. (2020) Predicting CO₂ Mineralization in Mine Residues: Insights from Leaching and Geochemical Modeling. Goldschmidt Virtual. June 21-26.

Power, I.M., Paulo, C., and Stubbs, A.R. (2020). Carbon dioxide removal using kimberlite residues. Goldschmidt Virtual. June 21-26.

Zeyen, N., Wang, B., Wilson, S.A., von Gunten, K., Alessi, D.S., Paulo, C., Stubbs, A.R., and Power, I.M. (2020). Cation Exchange: A New Strategy for Mineral Carbonation of Smectite-Rich Kimberlites. Goldschmidt Virtual. June 21-26.

Stubbs, A.R., Power, I.M., and Paulo, C. (2019). Potential for CO₂ sequestration in processed kimberlite at Venetia Diamond Mine, South Africa. 5^th annual IIES Science & Policy Workshop, Seoul, South Korea, November 13-14.

Stubbs, A.R., Power, I.M., and Paulo, C. (2019). Potential for CO₂ sequestration in processed kimberlite at Venetia Diamond Mine, South Africa. 3^rd IIES Graduate Students Forum, Seoul, South Korea, November 13-14.

Power, I.M., Paulo C., and Stubbs A.R. (2019) CO₂ sequestration within mine wastes via enhanced weathering and mineralization. 3^rd De Beers Mineral Carbonation Workshop, Johannesburg, South Africa, July 18–19.

Power, I.M., Paulo, C., and Stubbs, A.R. (2019) CO₂ sequestration within mine wastes via weathering and mineralization. Goldschmidt, Barcelona, Spain, August 18–23.

Power, I.M., Paulo, C., and Stubbs, A.R. (2019) CO₂ sequestration within mine wastes via weathering and mineralization. Mining and Environment International Conference VII, Sudbury, Canada, June 23–28.

Stubbs, A.R., Power, I.M., and Paulo, C. (2018) Potential for CO₂ sequestration at Diamond mines through accelerated weathering of tailings. International Institute for Environmental Studies Conference, Hong Kong, China, November 2–3.

Poster conference presentations

Stubbs, A.R., Paulo, C., Power, I.M., Zeyen, N., and Wilson, S. (2020). Potential for CO₂            sequestration in processed kimberlite at Venetia Diamond Mine, South Africa. Conference of Metallurgists, Digital, October 14-15.

Stubbs, A.R., Paulo, C., and Power, I.M. (2019) Potential for CO₂ sequestration in processed kimberlite at diamond mines. Mining and Environment International Conference VII, Sudbury, Canada, June 23–28.

Earth Science Level 1 - Lab Demonstrator

Geography Level 1 - Lab Demonstrator