Search for dissertations about: "bentonite"

Showing result 1 - 5 of 32 swedish dissertations containing the word bentonite.

  1. 1. The bentonite barrier : microstructural aspects on colloid filtration and radiation effects on bentonite colloid stability

    University dissertation from Stockholm : KTH

    Author : Michael Holmboe; KTH.; [2009]
    Keywords : MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; MEDICINE Chemistry; MEDICIN Kemi;

    Abstract : .... READ MORE

  2. 2. Diffusion of Radionuclides in Bentonite Clay Laboratory and in sity Studies

    University dissertation from Stockholm : KTH

    Author : Mats Jansson; KTH.; [2002]
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Bentonite; montmorillonite; cation; anion; diffusion; sorption; cobalt; caesium; strontium; iodide; pertechnetate; surface diffusion; in situ; NATURAL SCIENCES Chemistry; NATURVETENSKAP Kemi;

    Abstract : This thesis deals with the diffusion of ions in compactedbentonite clay. Laboratory experiments were performed toexamine in detail different processes that affect thediffusion. To demonstrate that the results obtained from thelaboratory investigations are valid under in situ conditions,two different kinds of in situ experiments were performed. READ MORE

  3. 3. The Bentonite Barrier Microstructural properties and the influence of γ-radiation

    University dissertation from Stockholm : KTH Royal Institute of Technology

    Author : Michael Holmboe; KTH.; [2011]
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; TECHNOLOGY Chemical engineering Chemical process and manufacturing engineering Nuclear chemistry; TEKNIKVETENSKAP Kemiteknik Kemisk process- och produktionsteknik Kärnkemi;

    Abstract : .... READ MORE

  4. 4. On diffusion of organic colloids in compacted bentonite

    University dissertation from Stockholm : Kemi

    Author : Susanna Wold; KTH.; [2003]
    Keywords : Diffusion; sorption; Humic Substances; Bentonite;

    Abstract : The main issue of this thesis was to obtain information ondiffusion and sorption behaviour on organic colloids incompacted bentonite through experimental studies. It was tostudy if bentonite is an efficient barrier for organic colloidsor not. READ MORE

  5. 5. Nuclear magnetic resonance studies on bentonite in complex mixed systems

    University dissertation from Luleå : Luleå tekniska universitet

    Author : Alexander S. Goryan; Luleå tekniska universitet.; [2012]
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; bentonite; montmorillonite; 23Na; 31P; 29Si NMR; interaction; ion exchange; sorption.; Chemistry - Physical chemistry; Kemi - Fysikalisk kemi; Chemistry of Interfaces; Gränsytors kemi;

    Abstract : In this work 23Na MAS NMR was validated as a successful quantitative method for studies of exchanging sodium in bentonites useful, in particular, for studies of ion-exchange kinetics. Na-enriched bentonites equilibrated in a re-circulated process water at iron-oxide pelletizing plants may acquire properties of Ca-bentonites after already 20 minutes of the equilibration time, since >50 % of sodium ions will be exchanged by calcium ions during first minutes of bentonite placed in contact with the process water. READ MORE