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Library Catalogue

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    Union Catalogue of Agricultural Libraries in the Netherlands

    The WUR Library Catalogue contains bibliographic data on books and periodicals held by the libraries of Wageningen University and Research Centre and some 15 associated libraries. Holding data are added to each record.

    Subjects covered include Agrotechnology, Food and Food Production, Plant and Animal Sciences, Soil Science, Geo-information, Landscape and Spatial Planning, Water and Climate, Ecosystem Studies, Economics and Society.

    The joint collections of the participating libraries cover a substantial part of the internationally available scientific literature in these disciplines.

    As far as Dutch scientific literature in these fields is concerned, coverage can be considered near 100%, including much of the so-called "grey literature".

    All titles are entered in their original language. Keywords are added to facilitate subject searching.

    The database is updated every day and now contains over 830.000 records.

Record number 104007
Title Adsorptie van Al-ionen aan het kleimineraal montmorilloniet
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M.G.M. Bruggenwert
Author(s) Bruggenwert, M.G.M.
Publisher Wageningen : Pudoc
Publication year 1972
Description 120 p
Notes Proefschrift Wageningen  show all notes
Ook verschenen als: Verslagen van landbouwkundige onderzoekingen ; 768
Ook verschenen als handelsuitgave
ISBN 9022003868
Tutors Bolt, Prof. Dr. Ir. G.H.
Graduation date 1972-06-21
Dissertation no. 518
Author abstract show abstract

The adsorption of aluminium ions onto sodium and calcium montmorillonite was studied. Under the experimental conditions (pH 3.5 and 5 and different total salt concentrations) the adsorbed aluminium ions were found to be in the form Al 3+, except when adsorbed onto calcium montmorillonite at pH 5. The similarity of the adsorption isotherms of Al 3+and La 3+onto montmorillonite and the similarity of these adsorption isotherms to the adsorption isotherms of Al 3+and La 3+onto resin (Dowex) suggested that adsorption properties of Al 3+onto montmorillonite were due to electrostatic properties and not to a specific property of aluminium nor of montmorillonite. Thermodynamic exchange constants ( K ) and the 'water factor' (responsible for dependence of K on concentration) were calculated. The 'water factor' corrected most of the variation in K .

A hypothesis was developed and confirmed by experimental results. It resolved contradictions in the literature on the hydrolysis of aluminium ions in the presence of clay minerals. The influence is mentioned of the adsorbed aluminium ions on the cation-exchange capacity, the titration curve and the stability of clay mineral aggregates.

Online full textINTERNET
On paper FORUM ; STACKS ; NN08200,518
FORUM ; STACKS ; NN08202,518
Keyword(s) (cab) clay minerals / soil / aluminium / absorption / adsorption
Categories Soil Chemistry
Publication type PhD thesis
Language Dutch; Flemish
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