Sökning: "carbonate formation"

Visar resultat 6 - 10 av 106 avhandlingar innehållade orden carbonate formation.

  1. 6. The Formation and Dissolution of Sodium Salt Scales in Black Liquor Evaporators

    Författare :Erik Karlsson; Chalmers tekniska högskola; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; black liquor; falling film evaporation; sodium carbonate; evaporator cleaning; crystallization fouling; sodium sulphate; scaling; solid dissolution;

    Sammanfattning : .... LÄS MER

  3. 7. Experimental, petrological and geochemical investigations of ikaite (CaCO3·6H2O) formation in marine environments

    Författare :Elin Tollefsen; Alasdair Skelton; Carl-Magnus Mörth; Erik Sturkell; Andrew Putnis; Stockholms universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; ikaite; petrology; experiment; geochemistry; marine environments; pseudomorphs; calcium carbonate; Ikka Fjord; glendonite; nepheline; siderite; paleotemperature; carbonatite; Geology; geologi;

    Sammanfattning : Carbonates are a group of minerals that play an essential role in several processes on planet Earth, for example in the global carbon cycle and as a product of biomineralisation. Calcite (CaCO3) is by far the most common mineral in the carbonate group, and the stable form of carbonate at Earth surface conditions. LÄS MER

  4. 8. Calcareous Algae of a Tropical Lagoon : Primary Productivity, Calcification and Carbonate Production

    Författare :Juma W. Kangwe; Mats Björk; Lena Kautsky; Ian Bryceson; Stockholms universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Plant physiology; Växtfysiologi;

    Sammanfattning : The green algae of the genus Halimeda Lamouroux (Chlorophyta, Bryopsidales) and the encrusting loose-lying red coralline algae (Rhodophyta, Corallinales) known as rhodoliths are abundant and widespread in all oceans. They significantly contribute to primary productivity while alive and production of CaCO3 rich sediment materials on death and decay. LÄS MER

  5. 9. Corrosion of current cullector materials in the molten carbonate fuel cell

    Författare :Baohua Zhu; KTH; []
    Nyckelord :molten carbonate fuel cell MCHC ; corrosion; current collecotr; contact corrosion reistance;

    Sammanfattning : The corrosion of current collector materials in MoltenCarbonate Fuel Cells (MCFC) is investigated. The essential aimsof this investigation were to study the corrosion behaviour ofdifferent materials, in varying cathode and anode MCFCenvironments, and to study the contact corrosion resistancesbetween the MCFC current collector and electrodes. LÄS MER

  7. 10. A geophysical investigation of carbonate build-ups in the Baltic Basin using reflection seismic and well data

    Författare :Tegan Levendal; Christopher Juhlin; Lars Nielsen; Uppsala universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Reflection seismic; Ordovician; Silurian; Carbonate mud mounds; Reefs; Gotland; Sweden; CAES; Seismic interpretation; OPAB dataset; 3D seismic; Geofysik med inriktning mot fasta jordens fysik; Geophysics with specialization in Solid Earth Physics;

    Sammanfattning : During the Late Ordovician, the region around Gotland was part of a shallow epicratonic basin in the southern subtropics. Low latitudes, relatively warm sea temperatures and the presence of a shallow marine environment promoted algae to flourish and diverse carbonate build-ups such as carbonate mounds and reefs developed on the southern margin of Baltica. LÄS MER