Sökning: "partitioning and transmutation"

Visar resultat 1 - 5 av 17 avhandlingar innehållade orden partitioning and transmutation.

  1. 1. The Use of Aliquat-336 in a Partitioning and Transmutation Process and a Kinetic Study of the Oxidation of U(IV) to U(VI)

    Författare :Anders Landgren; Chalmers tekniska högskola; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; partitioning; quaternary ammonium salts; transmutation; hydrolysis; Aliquat-336; liquid-liquid extraction; kinetics; oxidation; uranium IV ;

    Sammanfattning : Spent nuclear fuel contains several long-lived radionuclides that must be stored in a safe manner for a long time. Transmutation of these radionuclides into short-lived or stable nuclides reduces the necessary storage time by several orders of magnitude. The nuclides most suitable for transmutation are those of the actinides. LÄS MER

  3. 2. CHALMEX FS-13 investigations for process implementation

    Författare :Thea Lyseid Authen; Chalmers tekniska högskola; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Transmutation; SolventExtraction; CHALMEX; Partitioning; GANEX;

    Sammanfattning : From successive neutron absorption by uranium in nuclear reactors, transuranic elements such as neptunium, plutonium, americium and curium are produced. These elements are the main reason for the long-lived, highly radiotoxic and heat-producing nature of spent nuclear fuel. LÄS MER

  4. 3. The effect of radiolysis of BTBP type molecules on distribution ratios

    Författare :Anna Fermvik; Chalmers tekniska högskola; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; NATURVETENSKAP; NATURAL SCIENCES; radiolysis; transmutation; partitioning; BTBP; solvent extraction; lanthanides; actinides;

    Sammanfattning : Partitioning and transmutation of spent nuclear fuel enables a decrease in the long term radiotoxicity and volume of the waste to be disposed. By transforming the long-lived nuclides into shorter-lived or even stable ones, the time required for a final repository to be regarded safe for the environment can decrease from 100,000 years to less than 1,000 years. LÄS MER

  5. 4. Screening Investigations of Novel Nitrogen Donor Ligands

    Författare :Mikael Nilsson; Chalmers tekniska högskola; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; NATURVETENSKAP; NATURAL SCIENCES; lanthanides; transmutation; actinides; BTBP; solvent extraction; screening; partitioning;

    Sammanfattning : With an increasing global demand for electricity, nuclear power plays an important role. The nuclear power industry is in different stages of development throughout the world. LÄS MER

  7. 5. Studies of a Synergistic Extraction System for Minor Actinides and the Chemical Properties of 2-bromodecanoic acid

    Författare :Mikael Nilsson; Chalmers tekniska högskola; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; 2 :6 ; transmutation; 2 -terpyridine; actinides; partitioning; synergistic extraction; solubility parameters; 2; lanthanides; solvent extraction; 2-bromodecanoic acid;

    Sammanfattning : .... LÄS MER