Search for dissertations about: "metals"

Showing result 21 - 25 of 1226 swedish dissertations containing the word metals.

  2. 21. From hydrothermal carbonization to blue hydrochars and activated carbons : Adsorption of volatile organic compounds and heavy metals

    Author : Vahid Saadattalab; Niklas Hedin; Satu Ojala; Stockholms universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Hydrothermal carbonization; hydrochars; activated carbon; volatile organic compounds; heavy metals; materialkemi; Materials Chemistry;

    Abstract : Hydrothermal carbonization of carbohydrate and biomass is a straightforward method for preparing hydrochars at low temperature. Hydrochars are more carbonized than their precursors. Hydrochars themselves are carbon precursors for preparing activated carbons. Activated carbons are porous materials that can be used for water and air purification. READ MORE

  4. 22. Utilization of waste materials for extraction of strategic metals : a biogeochemical approach

    Author : Viktor Sjöberg; Stefan Karlsson; Bert Allard; Mattias Bäckström; Christian Ekberg; Örebro universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; biogeochemistry; ICP-QMS; MP AES; strategic metals; vanadium; uranium; mine waste; steel slag; shale residues; Enviromental Science; Miljövetenskap;

    Abstract : Worldwide the modern society produces vast amounts of waste materials containing strategic and valuable metals. Some of them are of substantial economic or environmental significance if controlled recovery of metals can be performed or if uncontrolled release to the environment occurs. READ MORE

  5. 23. Selective Comminution Applied to Mineral Processing of Critical Metals

    Author : Lorena Guldris Leon; Chalmers tekniska högskola; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; selective comminution; compressive crushing; analytical method; minerals; critical metals; elements.;

    Abstract : The outstanding properties of tungsten and tantalum make them valuable metals and, in some cases, irreplaceable in applications. Due to the vital economic importance and limited supply, growing interest places these metals on the critical metals risk list. READ MORE

  6. 24. On the Experimental Determination of Material Damping in Metals

    Author : Jonas Åberg; KTH; []
    Keywords : material damping; experimental methods; cast metals;

    Abstract : .... READ MORE

  7. 25. The Specter of Scarcity : Experiencing and Coping with Metal Shortages, 1870-2015

    Author : Hanna Vikström; Per Högselius; Dag Avango; Fjaestad Maja; Ingulstad Mats; KTH; []
    Keywords : HUMANIORA; HUMANITIES; scarcity; critical metals; Sweden; small countries; strategic metals; metal shortages; history of technology; experiences of scarcity; coping with shortages; technological trends; World War I; resource crisis; construction of resources.; Historiska studier av teknik; vetenskap och miljö; History of Science; Technology and Environment;

    Abstract : In spite of an ever-growing supply of metals, actors have long feared metal shortages. This thesis – departing from an understanding that metals scarcity is not an objective geological fact, but an experience, a fear of a shortage – explores why business and state actors have experienced metals as scarce and how they coped with scarcity from 1870 to 2015. READ MORE