Date of this Version

7-2017

Document Type

Journal Article

Publication Details

Published version

Siegrist, M., Southam, C., Bowman, G., Wilson, S. A., & Southam, G. (2017). Analysis of the potential for negative CO2 emission mine sites through bacteria-mediated carbon mineralisation: Evidence from Australia. Energy Procedia, 114, 6124-6132.

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© 2017 The Authors

Distribution License

Creative Commons Attribution-Noncommercial-No Derivative Works 4.0 License
This work is licensed under a Creative Commons Attribution-Noncommercial-No Derivative Works 4.0 License.

ISSN

1876-6102

Abstract

Carbon mineralisation has the potential to sequester and safely store large amounts of carbon dioxide (CO2). However, this technology has not seen the same level of development as geological storage in sedimentary reservoirs. This is primarily because early work on carbonation of minerals focused on high temperature and pressure process routes, which are cost-prohibitive to accelerate the reaction from geological to industrial time scales. Bacteria-mediated carbon mineralisation of mine tailings [1] overcomes this impediment because it occurs at ambient temperature and standard pressure and the rock is already crushed. With abundant mafic and ultramafic rock, a highly developed mining sector, and a warm climate that promotes fast carbonation reactions, Australia presents an optimal region to develop this technology. We assess the mineralisation potential of Australia's existing and future nickel mine tailings and estimate that this carbon sink could sequester up to 2,171 Megatons (Mt) of CO2.

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