Visar resultat 1 - 5 av 369 avhandlingar innehållade ordet Phosphorus.
1. The Story of Phosphorus : Sustainability implications of global phosphorus scarcity for food security
Sammanfattning : The story of phosphorus began with the search for the philosopher’s stone, and centuries later the critical role of phosphorus in soil fertility and crop growth was highlighted. Eventually, phosphorus was implicated in the global environmental challenge of eutrophication. LÄS MER
Sammanfattning : During the last decades, fish farming has been a rapidly increasing industry in many European and North American countries. Sweden has a large potential for aquaculture, but there is also a strong concern about the effects on the environment that an increased aquaculture production may cause. LÄS MER
Sammanfattning : Biomass is increasingly used as a feedstock in global energy production. This may present operational challenges in energy conversion processes which are related to the inorganic content of these biomasses. As a larger variety of biomass is used the need for a basic understanding of ash transformation reactions becomes increasingly important. LÄS MER
Sammanfattning : .... LÄS MER
5. Ash transformation in thermochemical conversion of different biomass resources with special focus on phosphorus
Sammanfattning : A great potential exists for increasing the use of bioenergy by utilizing agricultural biomass, forest residues, and sewage sludge in thermochemical units due to their high availability. Many of these biomass assortments have high ash contents with relatively high concentrations of ash-forming elements such as potassium (K), calcium (Ca), silicon (Si), and phosphorus (P). LÄS MER