Essays about: "Phosphorous"

Showing result 1 - 5 of 75 essays containing the word Phosphorous.

  1. 1. Effekter av klimatförändringar på växtplankton i subarktiska och alpina sjöar

    University essay from SLU/Dept. of Aquatic Sciences and Assessment

    Author : Matilda Lundström; [2019]
    Keywords : Fosfor; Växtplanktonbiomassa; Diversitet; Oligotrofiering; Temperatur;

    Abstract : The aim of this report was to determine how the climate change affects the ecosystems in alpine and subarctic lakes in Sweden. This was done by analyzing data from environmental monitoring of 14 subarctic and alpine lakes that was part of the national time-series lake monitoring program. READ MORE

  2. 2. Investigation into Melting Characteristics of Hydrogen-Reduced Iron Ore Pellets

    University essay from KTH/Materialvetenskap

    Author : Hedda Pousette; [2019]
    Keywords : Iron Ore Pellets; Sulphur; Phosphorous; Slag; Hydrogen Gas; Järnmalmspellets; Svavel; Fosfor; Slagg; Vätgas;

    Abstract : What kinetic and thermodynamic characteristics are established in a melt of hydrogen-reduced iron ore pellets? The pellets contain self-fluxing slag components which upon melting form an initial slag. Refining capabilities of this slag, such as dephosphorization power, are investigated in a lab-scale vertical furnace. READ MORE

  3. 3. Marktäckande material som åtgärd för minskat fosforläckage från rasthagar för värphöns

    University essay from SLU/Dept. of Soil and Environment

    Author : Ebba Hellstrand; [2019]
    Keywords : utehöns; fosforbindningsförmåga; punktbelastning;

    Abstract : Today there is a knowledge gap about phosphorus leakage from free range laying hens, and because of that a pilot project is ongoing since 2016 with scientists at The University of Agricultural Sciences (SLU), Research Institutes of Sweden (RISE) and also advisors in order to investigate the nutrient load from free range laying hens. My thesis have been conducted within this project, and I have chosen to focus on phosphorus leakage. READ MORE

  4. 4. Analysis of the distribution of plant nutrients in a biogas production system : a look at VH Biogas, co-digesting manure from several farms

    University essay from SLU/Dept. of Soil and Environment

    Author : André Johansson; [2019]
    Keywords : biogas; digestate; manure; nutrients;

    Abstract : This study examined nutrient flows in a system where 20 farms deliver manure to a biogas plant for digestion, and then receive digestate back. Some other substrates were also anaerobically digested at the plant e.g. slaughter residues. READ MORE

  5. 5. Silicon surface passivation via ultra-thin SiO2, TiO2, and Al2O3 layers

    University essay from Luleå tekniska universitet/Institutionen för teknikvetenskap och matematik

    Author : Anton Ek; [2019]
    Keywords : surface passivation; ALD; silicon; solar cell; SiO2; Al2O3; TiO2; stacks; characterization; optimization; RSM; temperature;

    Abstract : Energy traps at the silicon surface originating from discontinuities in the lattice is detrimental to the performance of solar cells. Acting as recombination centers, they offer a location where the charge carriers may easily return to their original energy band after excitation. READ MORE