Essays about: "Leaching fraction"

Showing result 1 - 5 of 13 essays containing the words Leaching fraction.

1. 1. Biochar from separated digestate and pig manure as soil amendment

   University essay from SLU/Dept. of Soil and Environment

   Author : Lovisa Nissen; [2022]
   Keywords : separation; screw press; incubation study; CO2 emission; N mineralization;

   Abstract : The situation in and around the Baltic Sea, with large areas with hypoxia in the sea and areas in the watershed with a high concentration of animal farms, has led to a need to increase the nutrient recycling of animal manure. High levels of phosphorus (P) in the soil lead to leaching, and by reducing the P-level in organic fertilizers, this leaching can be reduced. READ MORE

3. 2. Evolution and Differentiation of Large Icy Moons

   University essay from Lunds universitet/Astronomi - Genomgår omorganisation

   Author : Piia Tomberg; [2021]
   Keywords : Physics and Astronomy;

   Abstract : Purpose: In preparation of several future missions with the objective to research the large icy moons of the Solar System, it is necessary to have a cohesive understanding of the conditions that might lead to the formation of liquid oceans in these moons. The purpose of this work is to create a numerical model for simulating the temperature evolution of the cores of large icy moons. READ MORE

4. 3. Evaluation of a gross pollutant trap-biofilter stormwater treatment train : The Role Of Calcium Carbonate, Vegetation And Pre-Treatment Facility

   University essay from Luleå tekniska universitet/Arkitektur och vatten

   Author : Sofia Fahlbeck Carlsson; [2021]
   Keywords : Bioretention; stormwater; stormwater treatment; stormwater pollutants; heavy metals; phosphorus; Biofilter; dagvatten; dagvattenrening; dagvattenföroreningar; tungmetaller; fosfor;

   Abstract : Development of cities, new buildings and other impervious surfaces entails increased stormwater flows, volumes and pollutant loads. Heavy metals, nutrients, sediments and salt are common pollutants in stormwater. READ MORE

5. 4. Cobalt and nickel concentrations in the Uppsala clay deposits : solubility and risk assessment

   University essay from SLU/Dept. of Soil and Environment

   Author : Ali Reza Sadeghi; [2020]
   Keywords : heavy metals; soil contanimation; geochemically active fraction; leaching test; guideline value; site-specific guideline value;

   Abstract : Heavy metals create a contamination problem in soils. Examples of heavy metals are Ni, Co, and Cu. Soil environment and minerals existing in the soil such as Fe and Mn oxides affect the presence of these heavy metals. In this thesis, the cobalt and nickel concentrations of selected soil samples from different locations in Uppsala were determined. READ MORE

6. 5. Fractionation of NOM in water from the treatment process at Ringsjöverket

   University essay from Lunds universitet/Kemiteknik (CI)

   Author : Stina Karlsson; [2018]
   Keywords : water engineering; environmental engineering; avloppsteknik; Technology and Engineering;

   Abstract : During the last decades, increased concentrations of natural organic matter (NOM) and colour of surface waters have been reported from northern Europe and North America. Since surface waters are widely used for drinking water production this development has been problematic for drinking water producers. READ MORE