Sökning: " phosphorus"
Visar resultat 11 - 15 av 418 avhandlingar innehållade ordet phosphorus.
11. Analysis and speciation of organic phosphorus in environmental matrices : Development of methods to improve 31P NMR analysis
Sammanfattning : Phosphorus (P) is an essential element for life on our planet. It is central in numerous biochemical processes in terrestrial and aqueous ecosystems including food production; and it is the primary growth-limiting nutrient in some of the world’s biomes. LÄS MER
12. Phosphorus recovery from sewage sludge fluidized bed gasification processes
Sammanfattning : One of the most sustainable pathways of sewage sludge treatment in recent years has been thermal conversion. The benefits of thermal treatment of sewage sludge are the recovery of energy or valuable chemical products, the destruction of harmful organic compounds, the separation of heavy metals from the P-rich coarse ash fraction, and the decreased and sanitized ash volume. LÄS MER
13. Microalgae for Phosphorus Removal from Wastewater in a Nordic Climate
Sammanfattning : As part of a research project aiming to develop and evaluate a hydroponic system for wastewater treatment in Sweden, extended nutrient removal by microalgae was tested. The hydroponic/microalgal wastewater treatment system was built in a greenhouse in order to improve growth conditions for plants and algae. LÄS MER
14. Phosphorus recycling from wastewater to agriculture using reactive filter media
Sammanfattning : This thesis focused on testing the suitability of reactive filter media used for phosphorus (P) removal from wastewater as fertilizers, thus recycling P to agriculture. The work compared the P sorption capacity of several materials in order to assess their suitability as a source of P for plants. LÄS MER
15. Global Phosphorus supply chain dynamics: Sustainability implications for the 21st century
Sammanfattning : Phosphorus is an essential yet irreplaceable macronutrient for agriculture and thus plays a key role in global food security. Most of the phosphate fertilizers are produced from phosphate rock, a finite mineral resource that is mined and processed at great environmental and social costs. LÄS MER