Sökning: "adsorption model"

Visar resultat 1 - 5 av 366 avhandlingar innehållade orden adsorption model.

  1. 1. Modeling adsorption of organic compounds on activated carbon : a multivariate approach

    Författare :Jufang Wu; Anders Cedergren; Ingrid Fängmark; Ola Claesson; Lars-Gunnar Hammarström; Fritz Stoeckli; Umeå universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Analytical chemistry; activated carbon; adsorption; adsorption capacity; adsorption rate; PCA; PLS; binary mixtures; Dubinin-Radushkevich; Wheeler-Jonas; Analytisk kemi; Analytical chemistry; Analytisk kemi; analytisk kemi; Analytical Chemistry;

    Sammanfattning : Activated carbon is an adsorbent that is commonly used for removing organic contaminants from air due to its abundant pores and large internal surface area. This thesis is concerned with the static adsorption capacity and adsorption kinetics for single and binary organic compounds on different types of activated carbon. LÄS MER

  3. 2. Removal of Inorganic Anionic Pollutants from Water using Adsorption Technology

    Författare :Eva Kumar; William Hogland; Marcia Marques; Mika Sillanpää; Kenneth M. Persson; Linnéuniversitetet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Water treatment; adsorption; inorganic anionic pollutants; granular ferric hydroxide GFH ; nano-alumina; adsorption isotherms; adsorption kinetics; modeling.; Miljövetenskap; Environmental Science; Environmental technology; Miljöteknik;

    Sammanfattning : In the era of urbanization, industrialization and population growth, groundwater and drinking water sources are getting adversely polluted due to the addition of different toxic contaminants including inorganic anionic pollutants. The inorganic anions are of serious concern due to their adverse health effects on humans, even when present at very low concentrations in water. LÄS MER

  4. 3. Development and improvement of methods for characterization of HPLC stationary phases

    Författare :Torgny Undin; Torgny Fornstedt; Jörgen Samuelsson; Anders Törncrona; Johan Ekeroth; Douglas Westerlund; Uppsala universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; Adsorption isotherms; Elution by characteristic points; Inflection points; Single component adsorption; Elution by characteristic points method; Slope data; ECP-slope method; Adsorption; Adsorption energy distribution; Adsorption isotherms; AED; Characterization of adsorption processes; Chromatographic analysis; Chromatography; Hydrophobic-subtraction method HSM ; Hydrophobicity; Linear methods; Linear Models; Liquid chromatography; metoprolol; Non-linear methods; Nonlinear methods; phenol; priority journal; propranolol; Retention mechanism; reversed phase liquid chromatography; Solvation; Subtraction method; Thermodynamics; Chemistry with specialization in Surface Biotechnology; Kemi med inriktning mot ytbioteknik;

    Sammanfattning : High Performance Liquid Chromatography (HPLC) is a widely used tech-nique both for detecting and purifying substances in academy and in the industry. In order to facilitate the use of, and knowledge in HPLC, character-ization of stationary phases is of utmost importance. LÄS MER

  5. 4. Surface chemistry aspects on adsorption from a multicomponent model metalworking fluid

    Författare :Mats A. R. Tunius; Chalmers tekniska högskola; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; nonanoic acid; adsorption; N-butyl-N; N-diethanol amine; gamma-alumina; metalworking; diethylenglycol monbutylether; pors; 1-dodecanol; model fluid; cosolvent;

    Sammanfattning : .... LÄS MER

  7. 5. 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