Sökning: "nutrient inputs"

Visar resultat 1 - 5 av 31 uppsatser innehållade orden nutrient inputs.

1. 1. TRACKING WASTEWATER EMISSIONS IN RIVERS ENTERING GULF OF BOTHNIA COAST

   Master-uppsats, Umeå universitet/Institutionen för ekologi, miljö och geovetenskap

   Författare :Helen Mkandawire; [2023]
   Nyckelord :Nutrients inputs; wastewater; coastal waters; Gulf of Bothnia; wastewater emissions; nutrient transportation; marine water; nutrient loading; eutrophication.;

   Sammanfattning : The Gulf of Bothnia consists of two sub-basins in the northern Baltic Sea: the Bothnian Sea (salinity 4-5‰) and Bothnian Bay (salinity 2-3‰). Changing nutrient concentrations and signs of eutrophication has recently been observed in the Gulf of Bothnia. LÄS MER

3. 2. Profitability of optimizing biogas production in dairy farms : an experimental case study of a Swedish dairy farm´s usage of nitrogen in digestate as a nutrient resource for crop production

   Master-uppsats, SLU/Dept. of Economics

   Författare :Nils Hermansson; Albin Åkerblom; [2023]
   Nyckelord :biogas; optimization; profitability; economic effects; organic; conventional; agriculture; dairy farms; digestate; nitrogen; biogas; optimering; lönsamhet; ekonomiska effekter; ekologiskt; konventionellt; lantbruk; mjölkgårdar; rötrester; kväve;

   Sammanfattning : Biogas has the potential to be a contributor to sustainable energy for electricity, fuel, and heating. Because of that, there are different alternatives for biogas plants. In this study, a farm-based biogas plant for electricity production has been of interest. LÄS MER

4. 3. Integrating horticultural and arable crops : a sustainable way to increase vegetable production in Scania?

   Master-uppsats, SLU/Dept. of Biosystems and Technology (from 130101)

   Författare :Stina Helena Mortensen; [2022]
   Nyckelord :Horticulture; agriculture; vegetables; crop rotation; crop sequence; diversification; integration; ecosystem services; farmers’ attitudes;

   Sammanfattning : Modern arable production is associated with a highly homogenous landscape with few cultivated species and is relying heavily on external chemical inputs. Intensive vegetable production, on the other hand, is associated with environmental costs such as increased risk of nutrient leaching and loss of soil organic matter. LÄS MER

5. 4. The role of bed sediments for fractionation of phosphorus in remediated ditches in Sweden

   Uppsats för yrkesexamina på avancerad nivå, SLU/Dept. of Soil and Environment

   Författare :Emma Ryding; [2022]
   Nyckelord :Phosphorus fractionation; agricultural stream; sediment; two-stage ditch; eutrophication;

   Sammanfattning : Sweden’s environmental quality objectives “A varied agricultural landscape” and “Zero eutrophication”, aims to ensure food production while reducing negative impact from fertilizers on the environment. The input ceilings of nutrient concentrations in the Baltic Sea are still critical. LÄS MER

7. 5. Closing the loop of human waste: can eco-innovation be the key? Findings from the case study of the LooPi urinal

   Master-uppsats, Lunds universitet/Internationella miljöinstitutet

   Författare :Maricruz Vargas Esquivel; [2022]
   Nyckelord :eco-innovation; eco-toilet; wastewater reuse; circular economy; Vienna; Earth and Environmental Sciences;

   Sammanfattning : The Circular Economy (CE) primary goal is to be capable of "closing the loops" in processes by changing the idea of resources and waste. Eco-innovation ("the introduction of any new or significantly improved product (good or service), process, organizational change or marketing solution that reduces the use of natural resources (including materials, energy, water, and land)" could be a way to encourage industries to develop more solutions with "closed-loop" systems. LÄS MER