Search for dissertations about: "montmorillonite."

Showing result 16 - 20 of 44 swedish dissertations containing the word montmorillonite..

  1. 16. Metal distribution and mobility under alkaline conditions

    University dissertation from Örebro : Örebro universitetsbibliotek

    Author : Mårten Dario; Örebro universitet.; [2004]
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Kemi; Adsorption; Colloids; Nuclear waste; Cement; Montmorillonite; miljökemi; NATURAL SCIENCES Chemistry; NATURVETENSKAP Kemi; Kemi; Chemistry;

    Abstract : The adsorption of an element, expressed as its distribution between liquid (aquatic) and solid phases in the biogeosphere, largely determines its mobility and transport properties. This is of fundamental importance in the assessment of the performance of e.g. geologic repositories for hazardous elements like radionuclides. READ MORE

  2. 17. High Clay Content Cellulose Nanocomposites for Mechanical Performance and Fire Retardancy

    University dissertation from KTH Royal Institute of Technology

    Author : Lilian Medina; KTH.; [2019]
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; NATURVETENSKAP; NATURAL SCIENCES; nanocellulose; nanofibril; nanofiber; CNF; nanoplatelet; nanostructure; tactoid; montmorillonite; MTM; foam; aerogel; porosity; PVA; poly vinyl alcohol ; epoxy; moisture; biocomposite; biomaterial; biobased; flame; cone calorimetry; gas barrier; coating; film.; Fiber- och polymervetenskap; Fibre and Polymer Science;

    Abstract : Materials based on wood can offer sustainable alternatives to fossil-based plastics and composites, and show interesting mechanical properties. However, the issue of their flammability is generally unresolved. In this thesis, eco-friendly, fire retardant clay-cellulose nanofibril materials are investigated. READ MORE

  3. 18. On the sorption and diffusion of radionuclides in bentonite clay

    University dissertation from Stockholm : Kemi

    Author : Mireia Molera Marimon; KTH.; [2002]
    Keywords : Bentonite; cations; anions; sodium; cesium; strontium; cobalt; chloride; iodide; sorption; diffusion; cation exchange; surface complexation; ion exclusion; montmorillonite; swelling; interlayer water; interparticle water.;

    Abstract : .... READ MORE

  4. 19. Interfacial properties of calcium montmorillonite in aqueous solutions Density functional theory and classical molecular dynamics studies on the electric double layer

    University dissertation from Stockholm : KTH Royal Institute of Technology

    Author : Guomin Yang; KTH.; [2017]
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Clay minerals; Bentonite; density functional theory; molecular dynamics; GROMACS; electric double layer; electrolytes; ionic liquids; primitive model; CLAYFF forcefield.; Chemical Engineering; Kemiteknik;

    Abstract : The swelling properties of Bentonite are highly affected by clay content and the clay-water interactions that arise from the ion distribution in the diffuse double layer formed near the charged montmorillonite (or smectite) surfaces. Existing continuum models describing the electric double layers, such as classical Poisson-Boltzmann and DLVO theory, ignore the ion-ion correlations, which are especially important for multivalent ions at high surface charge and ionic strength. READ MORE

  5. 20. Generation, stability and migration of montmorillonite colloids in aqueous systems

    University dissertation from Stockholm : KTH Royal Institute of Technology

    Author : Sandra García García; KTH.; [2010]
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; Bentonite; montmorillonite; colloid stability; colloid migration; geological disposal; nuclear waste; granitic fractures; ; NATURAL SCIENCES Chemistry Environmental chemistry; NATURVETENSKAP Kemi Miljökemi; NATURAL SCIENCES Chemistry Environmental chemistry Environmental toxicology; NATURVETENSKAP Kemi Miljökemi Miljötoxikologi; TECHNOLOGY Chemical engineering Chemical process and manufacturing engineering Surface and colloid chemistry; TEKNIKVETENSKAP Kemiteknik Kemisk process- och produktionsteknik Yt- och kolloidkemi; TECHNOLOGY Chemical engineering Chemical process and manufacturing engineering Nuclear chemistry; TEKNIKVETENSKAP Kemiteknik Kemisk process- och produktionsteknik Kärnkemi;

    Abstract : In Sweden the encapsulated nuclear waste will be surrounded by compacted bentonite in the granitic host rock. In contact with water-bearing fractures the bentonite barrier may release montmorillonite colloids that may be further transported in groundwater. READ MORE