Search for dissertations about: "Isotherm"

Showing result 1 - 5 of 73 swedish dissertations containing the word Isotherm.

  1. 1. Adsorption of Metallic Ions onto Chitosan Equilibrium and Kinetic Studies

    University dissertation from Stockholm : KTH

    Author : Martha Benavente; Joaquín Martínez; Olle Wahlberg; [2008]
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Adsorption; biosorption; chitin; heavy metals; isotherm; kinetic models; mining; speciation; water treatment; TECHNOLOGY Chemical engineering; TEKNIKVETENSKAP Kemiteknik;

    Abstract : Equilibrium isotherms and the adsorption kinetics of heavy metals onto chitosan were studied experimentally. Chitosan, a biopolymer produced from crustacean shells, has applications in various areas, particularly in drinking water and wastewater treatment due to its ability to remove metallic ions from solutions. READ MORE

  2. 2. Polymer Gels and their Interactions with Ionic Surfactants

    University dissertation from Physical Chemistry 1, Lund University

    Author : Olof Rosén; [1997]
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Physical chemistry; Polymer-Surfactant Interactions; Modified Polymers; Binding Isotherm; Polymer Gels; Swelling Isotherm; Fysikalisk kemi;

    Abstract : The response on chemically crosslinked gels and polymer solutions on the addition of ionic surfactants and/or addition of salt at different temperatures have been studied. All polymers studied are water soluble and slightly hydrophobic or hydrophobically modified. READ MORE

  3. 3. Water diffusion and free volume in hydrophilic polymers

    University dissertation from Department of Polymer & Materials Chemistry

    Author : Charlotte Trotzig; [2006]
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Physical chemistry; free volume; self-diffusion; degree of crystallinity; glass transition temperature; tensile storage modulus; surface tension; isotherm; HPMC; PEO; water; triacetin; clay; Macromolecular chemistry; dynamic mechanical analysis; Fysikalisk kemi; differential scanning calorimetry; nuclear magnetic resonance; positron annihilation; Makromolekylär kemi;

    Abstract : During moisture uptake in polymers, the diffusion of the water molecules is believed to occur via unoccupied voids. These voids are called free volume cavities and their sizes are continuously altered when the moisture content in the polymer is enhanced. READ MORE

  4. 4. Adsorption Isotherm Parameter Estimation in Nonlinear Liquid Chromatography

    University dissertation from Uppsala : Acta Universitatis Upsaliensis

    Author : Patrik Forssén; Bertil Gustafsson; Torgny Fornstedt; Georges Guiochon; [2005]
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; High performance liquid chromatography HPLC ; Preparative chromatography; Competitive adsorption isotherm parameters; Perturbation peak PP method; Inverse method IM ; Computer simulation; Parameter estimation; Numerical method; Scientific Computing; Beräkningsvetenskap;

    Abstract : This thesis concerns the development and validation of methods for the industrially important area of adsorption isotherm parameter estimation in preparative, nonlinear high performance liquid chromatography (HPLC). Preparative chromatography is a powerful separation method to get pure compounds from more or less complex liquid mixtures, e.g. READ MORE

  5. 5. Fundamental Investigations of Adsorption in SFC

    University dissertation from Karlstad : Karlstads universitet

    Author : Emelie Glenne; Torgny Fornstedt; Jörgen Samuelsson; Caroline West; [2019]
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Supercritical fluid chromatography; SFC; Adsorption isotherm; Excess adsorption isotherm; Solvent adsorption; Peak distortion; Solute retention; Overloaded peaks; Kemi; Chemistry;

    Abstract : In supercritical fluid chromatography (SFC), the eluent is composed by carbon dioxide, often with additional components, in a condition between gas and liquid. This thesis aims to reach a deeper understanding of SFC by revealing the function of the additional eluent components through systematic adsorption studies. READ MORE