Essays about: "surt"

Showing result 11 - 15 of 27 essays containing the word surt.

  1. 11. Increased leaching of metals as a result of foundation work

    University essay from KTH/Hållbar utveckling, miljövetenskap och teknik

    Author : Emmy Mattisson; [2018]
    Keywords : Principal components analysis; Modified double mass analysis; Geochemistry; Sulphide bedrock; Remediation methods; Surface water pollution;

    Abstract : Heavy metal contamination in the environment is a global issue that is likely to increase in the future. This report investigates a construction area in which increased concentrations of the heavy metals cadmium, cobalt, copper, nickel and zinc and a decreased pH-value has been observed in the surface water recipient. READ MORE

  3. 12. Hydrology and surface water chemistry in a small forested catchment : which factors influence surface water acidity?

    University essay from Lunds universitet/Institutionen för naturgeografi och ekosystemvetenskap

    Author : Maja Jensen; [2017]
    Keywords : Physical geography; ecosystem analysis; hydrology; surface water chemistry; acidification; deposition; water balance modelling; Earth and Environmental Sciences;

    Abstract : Water chemistry alterations such as acidification and eutrophication represent major threats to the running waters of the world, and Swedish waters are among the most vulnerable. In this study the small forested catchment Storskogen, part of the SWETHRO monitoring network, was analysed to examine the links between deposition, catchment hydrological properties and surface water chemistry. READ MORE

  4. 13. Cariogenic potential of dental biofilm bacteria -support for caries as a polymicrobial disease

    University essay from Malmö högskola/Odontologiska fakulteten (OD)

    Author : Soha Abdul Rahim; Carolina Robertsson; [2017]
    Keywords : bacteria; microbiology; caries; biofilm; ecological plaque hypothesis; ekologiska plackhypotesen; karies; bakterier;

    Abstract : Syfte: Tillväxt och syraproduktion undersöktes i olika suspensioner hos bakterier som är vanligt förekommande i den dentala biofilmen. Förekomst av buffringskapacitet till följd av proteolytisk aktivitet i artificiellt konsortium och oralt konsortium undersöktes också. READ MORE

  5. 14. Acid Sulfate Soils and Metal Accumulation in Sediments in Rosån Catchment, Northern Sweden

    University essay from Uppsala universitet/Institutionen för geovetenskaper

    Author : Carola Lindström; [2017]
    Keywords : Acid sulfate soils; increased metal concentrations; anthropogenic activity; Sura sulfatjordar; ökade metallkoncentrationer; mänsklig påverkan;

    Abstract : Global environmental concerns arise when marine deposits with fine-grained iron sulfide-rich sediments (FeS and FeS2), now situated above sea level, oxidize from anthropogenic lowering of the groundwater table. The oxidation of iron sulfides decreases the soil pH and the acidic environment of these Acid Sulfate Soils (AS) soils increase weathering and mobilization of metals into adjacent watercourses, lakes and estuaries. READ MORE

  6. 15. Neutralizing acidic wastewater from the pickling process using slag from the steelmaking process : A pilot study in project "Neutralsyra"

    University essay from KTH/Materialvetenskap

    Author : Julia Brännberg Fogelström; Amelie Lundius; Hedda Pousette; [2017]
    Keywords : Slag; Neutralization; Lime; Lime Concentrate; Acidic wastewater; pH; Landfill; Byproducts; Slagg; Neutralisering; Kalk; Kalkkoncentrat; Surt avfallsvatten; pH; Deponi; Restprodukter;

    Abstract : Properties and origins of two byproducts from steelmaking plants, slag and acidic wastewater, are investigated in this report. The slags' suitability as neutralizing agents of acidic wastewater from the pickling process, with regard to amount of slag required and the environmental impact of the produced byproducts is investigated. READ MORE