Search for dissertations about: "reactive metals"

Showing result 1 - 5 of 70 swedish dissertations containing the words reactive metals.

  2. 1. Engineered Wetlands and Reactive Bed Filters for Treatment of Landfill Leachate

    Author : Agnieszka Kietliñska; KTH; []
    Keywords : Blast furnace slag; Compact constructed wetland; Metals; Nitrogen; Polonite; Sorbents;

    Abstract : The main objectives of this study were to investigate (i) anovel wetland treatment technology and (ii) selected bed filtermedia for the removal of contaminants from landfill leachate. Areview of the literature concerning experiences of the use ofconstructed wetlands (CW) for the removal of nitrogen fromlandfill leachate, showed that at least three groups oftreatment systems are in practice: sub-surface flow wetlands,hybrid systems (a combination of vertical and horizontal flowwetlands) and, compact constructed wetland (CCW). READ MORE

  4. 2. Interactions of iodine and methyl iodide with reactive metals

    Author : Henrik Glänneskog; Chalmers tekniska högskola; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; NATURVETENSKAP; NATURAL SCIENCES;

    Abstract : In the event of a severe nuclear reactor accident, iodine will be released from the fuel into the containment building. If released to the environment, iodine represents a biological hazard due to the concentration in the thyroid gland. Being a reactive element, iodine will undergo reactions with water, oxygen, organic material, surfaces etc. READ MORE

  5. 3. Iodine-Metal Surface Interactions under Severe Accident Conditions in a Nuclear Power Plant

    Author : Henrik Glänneskog; Chalmers tekniska högskola; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; NATURVETENSKAP; NATURAL SCIENCES; containment; reactive metals; BWR; adsorption; iodine; radiolysis;

    Abstract : In the event of a severe nuclear reactor accident, iodine will be released from the fuel and eventually enter the containment. Radioactive iodine isotopes constitute both an acute and a long-term threat to humans, owing to its half-life and its accumulation in the thyroid gland. READ MORE

  6. 4. The reactive formation of TiSi2in the presence of refractory metals

    Author : Aliette Mouroux; KTH; []
    Keywords : ;

    Abstract : Titanium disilicide (TiSi2) has been the favoured material for contactmetallisation in recent Si devices. The formation of TiSi2usually begins with the high resistivity C49 phaseas a result of the Ti-Si interaction at about 300-550 °Cand finishes with the low resistivity C54 phase through theC49-C54 phase transformation at about 700 °C. READ MORE

  7. 5. On-site wastewater treatment : Polonite and other filter materials for removal of metals, nitrogen and phosphorus

    Author : Agnieszka Renman; Per-Erik Jansson; Lars D. Hylander; Gunno Renman; Björn Klöve; KTH; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; alkaline materials; heavy metals; mechanisms; nutrient removal; sorption; speciation modelling; Environmental engineering; Miljöteknik;

    Abstract : Bed filters using reactive materials are an emerging technology for on-site wastewater treatment. Chemical reactions transfer contaminants from the aqueous to the solid phase. Phosphorus is removed from domestic wastewater by sorption to filter materials, which can then be recycled to agriculture as fertilisers and soil amendments. READ MORE