Sökning: "Dissolved CH4"
Visar resultat 6 - 10 av 15 uppsatser innehållade orden Dissolved CH4.
6. Temporal Trends in Dissolved Inorganic Carbon in a Swedish Boreal Catchment
Master-uppsats, Uppsala universitet/Institutionen för geovetenskaperSammanfattning : Inland waters are important systems for transforming, storing and transporting carbon along the aquatic continuum, but also by emitting carbon dioxide (CO2) and methane (CH4) to the atmosphere. In light of the last decades observed increase in dissolved organic carbon (DOC) in many inland waters across the northern hemisphere, a logical question arise whether other aquatic carbon species display similar trends. LÄS MER
7. Markytesänkning, växthusgasavgång och utlakning från dikad torvjord
Uppsats för yrkesexamina på avancerad nivå, Uppsala universitet/Institutionen för geovetenskaperSammanfattning : Greenhouse gas emissions and land subsidence on four cultivated peat soils (Martebo, Örke, Kälkestad, Lidhult) have been investigated by measuring emissions of carbon dioxide (CO2), methane (CH4) and nitrous oxide (N2O) in field and lab. Greenhouse emitted gas (mg/h) from undisturbed soil cores was measured in lab. LÄS MER
8. Wastewater from a biodiesel plant: characterization of streams and suggestions for treatment options
Master-uppsats, Lunds universitet/Kemiteknik (CI)Sammanfattning : Biodiesel is an important alternative to ordinary diesel when limiting the effects on the climate. However, the production path of biodiesel produces a wastewater with a high chemical oxygen demand (COD) and it needs to be cleaned. The aim of this study was to characterise biodiesel wastewater as well as to suggest treatment options. LÄS MER
9. Latrin som substrat vid rötning : utvärdering av biogaspotential och reduktion av läkemedelsrester
Uppsats för yrkesexamina på avancerad nivå,Sammanfattning : Avloppsvatten innehåller näring, bland annat kväve och fosfor som kan orsaka övergödningom det kommer ut i sjöar och vattendrag. Samtidigt behöver stora mängder näringsämnen tillföras i jordbruket för att producera mat. LÄS MER
10. Short-term effects of forest harvesting on CO2 and CH4 accumulation in small boreal lakes.
Kandidat-uppsats, Umeå universitet/Institutionen för ekologi, miljö och geovetenskapSammanfattning : The purpose of the study was to examine how forest harvesting affects the accumulation of carbon dioxide (CO2) and methane (CH4) under the ice-cover. Dissolved organic carbon (DOC) was hypothesized to increases post-harvest, this supplementation would in turn lead to an increased accumulation of CO2 and CH4 under the ice-cover. LÄS MER