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Coastal spreading of olivine to control atmospheric CO2 concentrations: A critical analysis of viability
Hangx, S.J.T.; Spiers, C.J. (2009). Coastal spreading of olivine to control atmospheric CO2 concentrations: A critical analysis of viability. International Journal of Greenhouse Gas Control 3(6): 757-767. https://dx.doi.org/10.1016/j.ijggc.2009.07.001
In: International Journal of Greenhouse Gas Control. Elsevier SCI Ltd: Oxford. ISSN 1750-5836; e-ISSN 1878-0148, more
Peer reviewed article  
Available in  Authors 
Keywords
    Minerals > Silicate minerals > Olivine
    Weathering
Author keywords
    CO2 sequestration; Mineralisation
Authors  Top 
  • Hangx, S.J.T.
  • Spiers, C.J.
Abstract
    Qualitative proposals to control atmospheric CO2 concentrations by spreading crushed olivine rock along the Earth's coastlines, thereby accelerating weathering reactions, are presently attracting considerable attention. This paper provides a critical evaluation of the concept, demonstrating quantitatively whether or not it can contribute significantly to CO2 sequestration. The feasibility of the concept depends on the rate of olivine dissolution, the sequestration capacity of the dominant reaction, and its CO2 footprint. Kinetics calculations show that offsetting 30% of worldwide 1990 CO2 emissions by beach weathering means distributing of 5.0