Sökning: "actinide lanthanide separation"

Hittade 3 avhandlingar innehållade orden actinide lanthanide separation.

1. 1. Solvent Extraction Studies with Substituted Malonamides and Oligopyridines Influence of Structure and Chemical Properties on the Extraction Ability of Trivalent Actinides and Lanthanides

   Författare :Lena Spjuth; Chalmers tekniska högskola; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; lanthanide; malonamides; synergism; transmutation; oligopyridines; separation; solvent extraction; actinide; basicity;

   Sammanfattning : Separation and transmutation of spent nuclear fuel has been considered as a complement to direct disposal in a deep geological repository. The time needed for the waste to decay to natural background levels can be drastically decreased if the long-lived radionuclides, mainly the actinides, in the spent nuclear fuel are separated and transmuted to short-lived or stable nuclides. LÄS MER

3. 2. Studies of the extracting agents 2,2':6',2''-terpyridine and 2,6-bis-(benzoxazolyl)-4-dodecyloxylpyridine : protonation constants and extraction of Am and Eu as function of pH and ionic medium

   Författare :Sofie Andersson; Chalmers tekniska högskola; []
   Nyckelord :Am; nitrate complex formation; separation factor; actinide lanthanide separation; partitioning and transmutation; solvent extraction; Eu;

   Sammanfattning : .... LÄS MER

4. 3. Determination of actinides using ICP-SFMS

   Författare :Ulrika Nygren; Luleå tekniska universitet; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Chemistry of Interfaces; Gränsytors kemi;

   Sammanfattning : Interest in the determination of the actinides using ICP-MS has steadily increased with the development of systems capable of more sensitive and precise measurements. However, the analysis of less abundant actinides such as Pu and Am is not straightforward due to the need for chemical separation of these elements prior to determination. LÄS MER