Sökning: "green sand"

Visar resultat 6 - 10 av 10 avhandlingar innehållade orden green sand.

  1. 6. Alkaline by-products as amendments for remediation of historic mine sites

    Författare :Lotta Sartz; Bert Allard; Ernest Yanful; Örebro universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Oxidized mine waste; lime mud; green liquor dregs; fly ash; lime kiln dust; steel slag; water works granules; Oxiderat gruvavfall; mesakalk; grönlut; flygaska; filterkalk; stålslagg; vattenverksgranuler; NATURAL SCIENCES; NATURVETENSKAP; Environmental chemistry; Miljökemi; Enviromental Science; Miljövetenskap;

    Sammanfattning : Mining has been and still is an important industry in Sweden, it has strongly contributed to the standard of living we have today. Extraction of ore began in the 12th century, but did not come about frequently until the 16th century, which is often seen as the starting age for ore processing and metal extraction. LÄS MER

  3. 7. Adsorption and reclamation of wastewater nitrogen and the value of human urine as a nitrogen fertiliser

    Författare :Annelie Hedström; Luleå tekniska universitet; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; VA-teknik; Urban Water Engineering;

    Sammanfattning : Ammonium adsorption and ammonium ion exchange technique are possible alternatives for ammonium reclamation at conventional wastewater treatment plants. There are a few ion exchange applications that have been suggested for nitrogen reclamation, which can be further developed. LÄS MER

  4. 8. Performance of Clay Liners in Near-Surface Repositories in Desert Climate

    Författare :Laith Al-Taie; Frank Wagner; Luleå tekniska universitet; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Soil Mechanics; Geoteknik;

    Sammanfattning : Wars in Iraq (1991 and 2003) generated various types of hazardous waste (HW) in the form of soil contaminated by depleted uranium (DU). Other HW emanated from destroyed army vehicles and remnants of Iraqi nuclear facilities holding various types and amounts of chemical and radioactive material. LÄS MER

  5. 9. Optical Sensing With an Ordinary Mobile Phone

    Författare :Zafar Iqbal; Ingemar Lundström; Robert Björklund; Mats Eriksson; Magnus Willander; Linköpings universitet; []
    Nyckelord :;

    Sammanfattning : A major portion of the world’s population (≈ 80% of the total) lives in developing countries where lab instruments such as spectrophotometers are not widely available as their purchasing as well as maintenance is normally unaffordable. On the other hand, there are now around five billion mobile phone subscriptions worldwide and the current generation of standard mobile phones has several capabilities to perform user-defined analysis. LÄS MER

  7. 10. Efficiency of a wood-fired bakery oven - Improvement by Theoretical and Practical

    Författare :Fabiao Manhica; Chalmers tekniska högskola; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; flow pattern; temperature profile; airflow; CFD; Wood-fired bakery oven WFBO ; bread quality;

    Sammanfattning : Combustion of biomass in small-scale furnaces is widely used in many countries and in different applications. The technology used is often “fixed grate” combustion in small batch furnaces. LÄS MER