Sökning: "Excess adsorption isotherm"

Hittade 5 avhandlingar innehållade orden Excess adsorption isotherm.

1. 1. Fundamental Investigations of Adsorption in SFC

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

   Sammanfattning : 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. LÄS MER

3. 2. Effects of Natural Organic Matter on Herbicide Adsorption to Activated Carbon

   Författare :Åsa Edell; Chalmers tekniska högskola; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; natural organic matter; herbicide; adsorption isotherm; preloading; activated carbon; competitive interaction;

   Sammanfattning : The presence of pesticides in the aquatic environment represents a potential threat to water quality and human health. Increasingly stringent drinking water quality directives focus on the need for efficient pesticide removal processes. LÄS MER

4. 3. Adsorption of heptyl xanthate at the metal sulphide/aqueousinterface

   Författare :Andreas Fredriksson; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Chemistry of Interfaces; Gränsytors kemi;

   Sammanfattning : In sulphide mineral flotation a sufficient hydrophobicity of the mineral surfaces is obtained by the adsorption of collector chemicals at the metal sulphide/aqueous interface. This surface alteration is of fundamental and applied interest. LÄS MER

5. 4. Displacement Washing in the Sulfate Pulp Mill

   Författare :Gunnar Eriksson; Chalmers tekniska högskola; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; metal ions; Kraft pulp; models; diffusion; filter cakes; sorption; temperature; lignin; fibers; washing; lime mud; chemical recovery; displacement; pulp washing;

   Sammanfattning : Displacement washing is an operation in which it is possible to wash solid-phase particles with a minimum of water. In a sulfate pulp mill, the main application is the pulp washing, but lime mud washing also occurs in the chemical recovery. The washing consumes a great deal of water. LÄS MER

7. 5. Interfacial properties of some carbohydrate-based surfactants and polymers

   Författare :Atte J. Kampulainen; KTH; []
   Nyckelord :Pure science;

   Sammanfattning : The aim of this thesis is primarily to investigate theadsorption of surfactants, in particular to the airwaterinterface. The effects of the head-group and the hydrocarbonchain are of special interest. LÄS MER