Experimental study of the nickel solubility in sulphidic groundwater under anoxic conditions

Torbjörn Carlsson, Ulla Vuorinen, Tommi Kekki, Hannu Aalto

    Research output: Chapter in Book/Report/Conference proceedingConference article in proceedingsScientificpeer-review

    Abstract

    This paper presents the results from an experimental study of the nickel solubility in sulfidic groundwater under anoxic conditions. The waters used were natural groundwater from Olkiluoto and synthetic saline groundwater, to which sulfide had been added. Two sulfide concentrations, 3.1.10−6 M and 9.4.10−5 M, were used. The possible influence of ferrous iron on the nickel concentration was also studied by adding small amounts of iron chloride, which yielded ferrous iron concentrations of 1.8.10−5 M or less.

    The initial nickel concentrations in the water samples were 1.0.10−6 M and 1.0.10−3 M. The nickel concentrations were determined using 63Ni and liquid scintillation counting. The duration of the experiments was 177 days.

    The results for the waters differed markedly. The nickel concentration in the natural groundwater decreased in all samples to roughly 10% of the initial value.

    The nickel concentration in the synthetic groundwater was found to decrease in those samples having initial sulfide and nickel concentrations of 9.4.10−5 M and 1.0.10−6 M, respectively. The nickel concentration was in this case reduced to about 1% of its initial value. For the other synthetic groundwater samples, the nickel concentration remained at its original initial level.

    The variation of the ferrous iron concentration did not have any observable effect on the measured nickel concentrations.
    Original languageEnglish
    Title of host publicationSymposium – Scientific Basis for Nuclear Waste management XXIV
    EditorsK.P. Hart, G.R. Lumpkin
    PublisherMaterials Research Society
    Pages1151-1159
    DOIs
    Publication statusPublished - 2001
    MoE publication typeA4 Article in a conference publication
    Event24th International Symposium on the Scientific Basis for Nuclear Waste Management - Sydney, Australia
    Duration: 28 Aug 200031 Aug 2000

    Publication series

    SeriesMRS Online Proceedings
    Volume663
    ISSN1946-4274

    Conference

    Conference24th International Symposium on the Scientific Basis for Nuclear Waste Management
    CountryAustralia
    CitySydney
    Period28/08/0031/08/00

    Fingerprint Dive into the research topics of 'Experimental study of the nickel solubility in sulphidic groundwater under anoxic conditions'. Together they form a unique fingerprint.

  • Cite this

    Carlsson, T., Vuorinen, U., Kekki, T., & Aalto, H. (2001). Experimental study of the nickel solubility in sulphidic groundwater under anoxic conditions. In K. P. Hart, & G. R. Lumpkin (Eds.), Symposium – Scientific Basis for Nuclear Waste management XXIV (pp. 1151-1159). Materials Research Society. MRS Online Proceedings , Vol.. 663 https://doi.org/10.1557/PROC-663-1151