41 uppsatser · sida 1 av 3
… the methane production and at the same time improve the gross energy digested. Nitrate and Sulfur are both good electron acceptors, but due to its toxic effects the use of nitrate in feed has been neglected. Recently scientists have recorded that animals adapted to high amounts …
… depends on the fraction of the total nitrogen in the soil that consists of nitrate, since nitrate is easily transported through the soil. Nitrogen leaching increases after clear-cutting since the uptake by vegetation is greatly reduced. In this study the soil chemistry of two …
Modellanalys av vattenflöde till Hörviks vattentäkt
… in the western part of Blekinge in Sweden, has a very high content of nitrate. Water with a too high content of nitrate is hazardous to human health, in particular to small children. The area surrounding the well is mostly drained agricultural land with some larger farms for …
… intended for drinking water supply has to comply with the quality standards of nitrate and pesticides. The purpose of this exam project is to describe how Denmark, England and Sweden are working with groundwater protection and land use. The examination paper is delimited to …
… % in flue gas. NOx was transferred from the flue gas to a scrubber liquid as nitrate and nitrite. The scrubber liquid needs to be purified from nitrate and nitrite. One possible solution is to clean the scrubber liquid in Gruvön biologic cleaning construction. Microorganisms in …
miljökonsekvenser relaterade till förändrad kväveomsättning i mark
… The aim with the thesis work was to discuss and quantify the leaching of nitrate and the emission of nitrous oxide from the soil at the groundwater level established through the tunnel project. The nitrogen related processes that could be affected were described and discussed …
åtgärder och styrmedel i fem länder
… there is an increasing concern about the occasionally high concentrations of nitrate and pesticides in drinking water. The advent of the EU Water Framework Directive particularly highlights this. The directive states that all large drinking water sources should be identified and …
ett laboratorieförsök
… this thesis was to examine if it is possible to keep nitrogen in the form of nitrate(NO3-) in ponds from one season to another by keeping a high concentration of oxygen in thepond water. This hypothesis was tested by doing a lab experiment where two systems werecompared …
a model study
… to present the results from a climate impact assessment on waterbalance and nitrate leaching for an arable Swedish soil. The soil is a sandy soil in southwesternSweden, grown with spring cereals. This study is meant to be a benchmark example,and cannot be seen as a regional or …
… bypass protein in the feed, and reduces enteric methane emission. Addition of nitrate further reduces methane emission and available nitrogen increases. Four legumes; Acacia mangium, Flemingia macrophylla, Leucaena leucocephala and Stylosanthes guianensis was studied together …
… of fertiliser and concentrate feed, losses of nitrogen (primarily as nitrate and nitrous oxide) and use of energy take place outside the farm and this is included in the Milkperspective. Conventional farms had a higher share of the energy use and loss of nitrous oxide outside …
effekter på lustgasavgång, kväveretention och andel vattenfyllda porer
… for application on biocharamended soils. There was a tendency of increased nitrate retention and KCl-extractable nitrate withbiochar and KCl-extractable nitrate was positively correlated with the specific area of the biochar. pHwas higher for all biochars compared with control …
… that could be used for the prosthesis. These five solutions were Silicone Nitrate on Cobolt Chrome, phase stabilized Zirconium Oxide on Cobolt Chrome, Silicone Nitrate on Silicone Nitrate, DLC coated phase stabilized Zirconium Oxide and Chromium nitride coated Cobolt Chrome on …
En pilotstudie vid Univates, Lajeado ? RS Brasilien
… to supplement the treatment plant because they need to reduce BOD, COD and nitrate of the water going to recipient. A subsurface flow wetland (SSF) can be a good choice. In order to be able to design an efficient SSF it is important to understand how the grain sizes of a …
… was intended to be in the aerated pond, where ammonium ions would oxidise to nitrate by the process called nitrification. The established nitrate would then be transformed to nitrogen gas by a denitrification in the land treatment and be emitted to the air. Unfortunately the …
