Comment on “Hydromagnesite solubility product and growth kinetics in aqueous solution from 25 to 75 °C” by Gautier, Q., Benezeth, P., Mavromatis, V., and Schott, J

Journal Article · Sat Apr 16 00:00:00 EDT 2016 · Geochimica et Cosmochimica Acta

DOI:https://doi.org/10.1016/j.gca.2016.04.013· OSTI ID:1249088

Xiong, Yongliang ^[1]

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1. Sandia National Lab. (SNL-NM), Carlsbad, NM (United States)

Here, Gautier et al. (2014) recently published their determination of hydromagnesite solubility constant and hydromagnesite growth kinetics. Although their raw data appear to be of high quality, there is an oversight in their calculations of the hydromagnesite solubility constants given the solution compositions in their experiments. The oversight lies in the fact that they did not consider the constraint of simultaneous equilibrium with brucite. This oversight causes their newly calculated equilibrium constant for hydromagnesite to be discordant with the literature values (Königsberger et al., 1992 and Xiong, 2011).

• Research Organization: Sandia National Laboratories (SNL-NM), Albuquerque, NM (United States)
• Sponsoring Organization: USDOE National Nuclear Security Administration (NNSA); USDOE Office of Environmental Management (EM)
• Grant/Contract Number: AC04-94AL85000
• OSTI ID: 1249088
• Alternate ID(s): OSTI ID: 1556152
• Report Number(s): SAND2016-2962J; 637560
• Journal Information: Geochimica et Cosmochimica Acta, Journal Name: Geochimica et Cosmochimica Acta; ISSN 0016-7037
• Publisher: The Geochemical Society; The Meteoritical Society
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE