Sökning: "chemical speciation"

Visar resultat 41 - 45 av 114 avhandlingar innehållade orden chemical speciation.

  1. 41. Extraction Properties of some Nitrogen-Containing Extractants and Determination of Nitrate Complex Formation for Lanthanides and Selected Actinides Using Solvent Extraction

    Författare :Sofie Andersson; Chalmers tekniska högskola; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; actinides; solvent extraction; separation; lanthanides; nitrate complex formation;

    Sammanfattning : Partitioning and transmutation of spent nuclear fuel will reduce the amount of waste and its radiotoxicity in a long-term perspective. At the same time the energy content of the spent nuclear fuel can be used more efficiently by recycling of uranium and plutonium and by using energy from the transmutation reactor. LÄS MER

  3. 42. Characterization of aluminum in environmental systems using X-ray absorption and vibrational spectroscopy : The importance of organic matter

    Författare :Kristoffer Hagvall; Torbjörn Karlsson; Per Persson; Lars Lövgren; Dan Berggren Kleja; Umeå universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES;

    Sammanfattning : The fate and behavior of many metals in the environment are highly dependent on interactions with natural organic matter (NOM), which is abundant in most soils and surface waters. The complexation with NOM can influence the speciation of the metals by affecting their hydrolysis and solubility. LÄS MER

  4. 43. Mercury and dioxins in a MercOx-scrubber

    Författare :Carl-Johan Löthgren; Bert Allard; Bert van Bavel; Sven Andersson; Ivars Neretnieks; Örebro universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; waste incineration; flue gas cleaning; PCDD PCDF; PBDD PBDF; wet scrubber; Chemistry; Kemi; Kemi; Chemistry;

    Sammanfattning : The removal of mercury and the absorption of dioxins in an acid wet scrubber have been studied in industrial scale. Hydrogen peroxide is added as an oxidizing agent to the scrubber liquid with the purpose to remove SO2 and enhance the removal of mercury. LÄS MER

  5. 44. Formation, uptake and bioaccumulation of methylmercury in coastal seas : a baltic sea case study

    Författare :Aleksandra Skrobonja; Erik Björn; Agneta Andersson; Anne L. Soerensen; Marc Amyot; Umeå universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Mercury; methylmercury; bioaccumulation; mesososm; isotope tracers; methylation; demethylation; stability constant; kinetic model; coastal sea; ICPMS; LC-MS MS;

    Sammanfattning : Methylmercury (MeHg) is a potent neurotoxin which can bioaccumulate to harmful levels in aquatic food webs. Methylmercury formation is a predominantly biotic process which involves phylogenically diverse microorganisms (e.g. iron- or sulfate-reducing bacteria). LÄS MER

  7. 45. Sodium Batteries: From Liquid to Polymer Electrolytes

    Författare :Andrea Boschin; Chalmers tekniska högskola; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; electrochemical solid state cells; polymer electrolytes; sodium batteries; liquid electrolytes;

    Sammanfattning : Today lithium-ion batteries (LIBs) are dominating the field of rechargeable batteries for portable devices. More recently LIBs have also been considered for large-scale applications, such as in the areas of electromobility and grid storage. LÄS MER