Sökning: "Mangan Sulfide"

Hittade 3 uppsatser innehållade orden Mangan Sulfide.

1. 1. Long-Term Impact of Drought on AcidSulfate Soil Leaching, a Study of NineCatchment Areas in Sweden and Finland

   Master-uppsats, Uppsala universitet/Luft-, vatten- och landskapslära

   Författare :Emilie Åström; [2022]
   Nyckelord :acid sulfate soil; hydrological drought; water chemistry; metal leaching; sulfate concentration; sur sulfatjord; hydrologisk torka; vattenkemi; metallurlakning; sulfatkoncentration;

   Sammanfattning : Sediments rich in sulfide were deposited in the Littorina sea in an environment that was shallow, anoxic,and reductive. The sediments were brought above sea level by isostatic uplift and can now be foundalong the coast of the Baltic sea. LÄS MER

3. 2. Acid Sulfate Soils and Metal Accumulation in Sediments in Rosån Catchment, Northern Sweden

   Master-uppsats, Uppsala universitet/Institutionen för geovetenskaper

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

   Sammanfattning : 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. LÄS MER

4. 3. Three-dimensional investigation of mangan sulfides in steels by using electrolytic extraction

   Kandidat-uppsats, KTH/Materialvetenskap

   Författare :Oscar Juneblad; [2013]
   Nyckelord :Electrolytic Extraction; Mangan Sulfide; Inclusions; SEM; Carbon Steel;

   Sammanfattning : .... LÄS MER