Essays about: "NH4"

Showing result 11 - 15 of 77 essays containing the word NH4.

  1. 11. Effects of wild boar (Sus scrofa) on soil processes and tree growth

    University essay from Uppsala universitet/Institutionen för biologisk grundutbildning

    Author : Andreas Lundgren; [2021]
    Keywords : Wild boars; soil processes; tree growth; Vildsvin; markprocesser; trädtillväxt;

    Abstract : Wild boars (Sus scrofa) have increased rapidly in population size and home range since their reintroduction to the Swedish fauna. Through their rooting behaviour, the boars can cause great disturbance to the ecosystem. READ MORE

  3. 12. Hydrolysis of waste activated sludge from pulp and paper mills : effect on dewatering properties and biogas potential by utilizing existing side streams

    University essay from Linköpings universitet/Tema Miljöförändring

    Author : Louise Hjalmarsson; [2021]
    Keywords : hydrolysis; dewatering properties; biogas; sludge; waste activated sludge;

    Abstract : A big challenge within pulp and paper mills is the large quantities of waste activated sludge (WAS) that is produced during the wastewater treatment. The WAS is made up of biological cells and extra polymeric substances (EPS) and can bind a large amount of water causing difficulties to dewater the WAS. READ MORE

  4. 13. Effects of drought on waterchemistry in a boreal streamnetwork

    University essay from Umeå universitet/Institutionen för ekologi, miljö och geovetenskap

    Author : Enrique Gómez de Salazar Martínez; [2021]
    Keywords : : drought; boreal streams; Krycklan Catchment Study; land cover; biogeochemistry;

    Abstract : Hydrological drought at high latitudes represents a rising environmental hazard induced byglobal climate change. Yet, we still know little about how drought events influence thebiogeochemistry of boreal streams. READ MORE

  5. 14. Applicering av kväve i fast och flytande form : effekt på växttillgänglighet i åkermark

    University essay from SLU/Dept. of Soil and Environment

    Author : Elizabeth Lövstaf; [2020]
    Keywords : fast gödselmedel; flytande gödselmedel; ammonium; nitrat; ammoniumfixering; regnsimulering;

    Abstract : Kvävegödselmedel är det mest använda gödselmedlet i Sverige till följd av dess goda effekter på en grödas kvalité och avkastning. Tillförsel av kväve (N) görs vanligen i formerna nitrat (NO3-) och ammonium (NH4+), gärna i kombination med andra näringsämnen. READ MORE

  6. 15. Nutrient dynamics in pak choi cultivation fertilized with biogas digestate : effects of non-nutrient digestate elements and amendment with mineral nutrients

    University essay from SLU/Department of Biosystems and Technology (from 130101)

    Author : Kristina Weimers; [2020]
    Keywords : Biogas digestate; pak choi; Brassica rapa; ssp. chinensis; ‘Joy Choi’; greenhouse; soilless production; peat-based growing media; biostimulants; nitrification; nutrient recovery efficiency; phosphorus; sulphur;

    Abstract : Anaerobic digestion in biogas plants produces renewable energy and a residue which is rich in plant nutrients. This residue is called digestate. Today, these digestates are mostly spread directly onto fields as manure. READ MORE