Stubbs et al. (2023): Impact of wet-dry cycles on enhanced rock weathering of brucite, wollastonite, serpentinite and kimberlite: Implications for carbon verification
Amanda R. Stubbs, Ian M. Power, Carlos Paulo, Baolin Wang, Nina Zeyen, Sasha Wilson, Evelyn Mervine, Chris Gunning IN: Chemical Geology 637, 121674, https://doi.org/10.1016/j.chemgeo.2023.121674
Enhanced rock weathering is a proposed CO2 removal strategy for mitigating climate change; its implementation can be facilitated by improving carbon verification methods. In this study, weathering experiments exposed brucite, wollastonite skarn, serpentinite, and kimberlite residues (Venetia Diamond Mine, South Africa), to wetting and drying cycles (4/day) for 1 yr to elucidate reaction pathways and rates while evaluating carbon verification tools, including mineral quantification, total inorganic carbon (TIC), and stable and radiogenic carbon isotopes.