Sökning: "leaching"

Visar resultat 1 - 5 av 245 avhandlingar innehållade ordet leaching.

  1. 1. Ash Products for Nutrient Recycling in Forestry : Leaching and Drying Characteristics

    Författare :Peter Mellbo; Högskolan i Kalmar.; [2007]
    Nyckelord :LANTBRUKSVETENSKAPER; AGRICULTURAL SCIENCES; Ash products; Wood ash; Leaching; Drying; Nutrient; ; Sustainable forestry; FORESTRY; AGRICULTURAL SCIENCES and LANDSCAPE PLANNING Plant production Forestry; SKOGS- och JORDBRUKSVETENSKAP samt LANDSKAPSPLANERING Växtproduktion Skogsskötsel; Miljövetenskap; Environmental Science;

    Sammanfattning : As the demand for carbon dioxide neutral energy sources increases, forestry becomes more intensive. Entire trees are removed from the felling sites threatening the nutrient balance of the forest soils. LÄS MER

  2. 2. Leaching of concrete : the leaching process and its effects

    Detta är en avhandling från Division of Building Materials, LTH, Lund University

    Författare :Tomas Ekström; Lunds universitet.; Lund University.; [2003]
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; material technology; water permeability.; concrete dams; byggnadsteknik; building construction; leaching; materiallära; materialteknik;

    Sammanfattning : Popular Abstract in Swedish Avhandlingen presenterar en experimentell studie av urlakning av betong orsakat av vatten som tränger igenom betongen, eller av diffusion av joner till vatten på uppströmssidan. Urlakningsförloppet och dess effekter modelleras med finita-element-metoden... LÄS MER

  3. 3. Phosphorus recovery from ashes by leaching

    Detta är en avhandling från Division of Building Materials, LTH, Lund University

    Författare :Anita Pettersson; [2005]
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; recovery; phosphorus; sewage sludge; CFB combustion; co-combustion; leaching;

    Sammanfattning : .... LÄS MER

  4. 4. Environmental and health hazards of chemicals in plastic polymers and products

    Detta är en avhandling från Division of Building Materials, LTH, Lund University

    Författare :Delilah Lithner; Göteborgs universitet.; Gothenburg University.; [2011]
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; plastics; plastic products; plastic polymers; consumer products; environmental hazards; environment; health hazards; human health; hazard ranking; hazard assessment; chemical ranking; hazard identification; hazard classifications; hazardous chemicals; hazardous substances; toxic substances; monomers; polymers; toxicity; acute toxicity; toxicity tests; Daphnia magna; Toxicity Identification Evaluation; TIE; leaching; leachates; product leachates; leaching tests; plastic materials; plastic;

    Sammanfattning : Plastics are extremely diverse in terms of chemical composition, properties and possible applications, and are widely distributed in the society and the environment. In the last 15 years the global annual production has doubled, reaching 245 million tons in 2008. LÄS MER

  5. 5. Leaching of Hazardous Substances from Concrete Constituents and Painted Wood Panels

    Detta är en avhandling från Division of Building Materials, LTH, Lund University

    Författare :Åse Togerö; [2004]
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; thiocyanate; biocides; leaching; runoff; admixture; coatings; resin acids; blast furnace slag; toxic; fly ash; cement; tall oil; diffusion paints; concrete;

    Sammanfattning : At a time of increased concern about environmental issues in the building sector, it is essential to know the environmental performance of different building materials. Knowledge of the possible release of hazardous substances in building materials is scarce, and these aspects have often been neglected in environmental assessment methods. LÄS MER