Staff Publications

Staff Publications

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    'Staff publications' is the digital repository of Wageningen University & Research

    'Staff publications' contains references to publications authored by Wageningen University staff from 1976 onward.

    Publications authored by the staff of the Research Institutes are available from 1995 onwards.

    Full text documents are added when available. The database is updated daily and currently holds about 240,000 items, of which 72,000 in open access.

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Record number 536769
Title Comparison of strontium retardation for kaolinite, illite, vermiculite and allophane
Author(s) Ning, Zigong; Ishiguro, Munehide; Koopal, Luuk K.; Sato, Tsutomu; Kashiwagi, J.
Source Journal of Radioanalytical and Nuclear Chemistry (2018). - ISSN 0236-5731 - p. 1 - 11.
DOI http://dx.doi.org/10.1007/s10967-018-5870-9
Department(s) Physical Chemistry and Soft Matter
Publication type Refereed Article in a scientific journal
Publication year 2018
Keyword(s) Clay minerals - Competitive adsorption - Distribution coefficient - Penetration length ratio - Strontium
Abstract Adsorption and retardation of Sr2+ by four clays were investigated, which were evaluated by using the distribution coefficient (KD) and average penetration length ratio of Sr2+ to water (r). KD values for Sr2+ among the four clay minerals were in the order: kaolinite < illite < vermiculite ≪ allophane, and Sr2+ penetration length ratio (r) followed the inverse order. Adsorption was further analyzed by using Langmuir adsorption model for competitive Sr2+ and Na+ adsorption at constant NaCl concentration. Conditional affinity constants suggested that Sr2+ adsorption on the variable charge sites of clay edges contributed to the high conditional Sr2+ affinities.
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