Institutional Research Information Service
UCL Logo
Please report any queries concerning the funding data grouped in the sections named "Externally Awarded" or "Internally Disbursed" (shown on the profile page) to your Research Finance Administrator. Your can find your Research Finance Administrator at http://www.ucl.ac.uk/finance/research/post_award/post_award_contacts.php by entering your department
Please report any queries concerning the student data shown on the profile page to:

Email: portico-services@ucl.ac.uk

Help Desk: http://www.ucl.ac.uk/ras/portico/helpdesk
Publication Detail
An experimental study of hydroxylbastnasite solubility in aqueous solutions at 25 °C
  • Publication Type:
    Journal article
  • Publication Sub Type:
  • Authors:
    Voigt M, Rodriguez-Blanco JD, Vallina B, Benning LG, Oelkers EH
  • Publication date:
  • Pagination:
    70, 77
  • Journal:
    Chemical Geology
  • Volume:
  • Status:
  • Print ISSN:
© 2016 Elsevier B.V.The mobility of rare earth elements (REEs) in natural aqueous solutions is of increasing interest due to their application in numerous high-tech and renewable energy technologies (e.g., wind turbines and electric vehicles), as well as their role as tracers in the Earth Sciences. Basic thermodynamic data for water-rock interactions are, however, sparse and partially inconsistent, even for carbonate minerals of the bastnasite group (REE(CO3)(OH,F)), which currently represent the most exploited REE ore. Towards the improved quantification of the REE in natural and industrial systems, pure hexagonal hydroxylbastnasite and orthorhombic kozoite (REE(CO3)(OH)) were synthesized at hydrothermal conditions and subsequently used as starting material for aqueous dissolution and precipitation experiments. All closed system experiments were performed in air equilibrated aqueous fluids. Reaction progress was followed by measuring pH and REE concentrations at regular intervals. Experiments at 25 °C in the presence of selected concentrations of HCl and NaOH were run for up to 33 days until steady-state pH and REE concentrations were attained. Results indicate that the solubility products (KSP) of the reaction REE(CO3)(OH) = REE3+ + CO32- + OH- are log(KSP) = -23.8 ± 0.1, -24.1 ± 0.3, and -22.3 ± 0.2 for Nd-, La-hydroxylbastnasite, and Nd-kozoite, respectively at 25 °C.
Publication data is maintained in RPS. Visit https://rps.ucl.ac.uk
 More search options
There are no UCL People associated with this publication
University College London - Gower Street - London - WC1E 6BT Tel:+44 (0)20 7679 2000

© UCL 1999–2011

Search by