110 uppsatser · sida 3 av 8
En undersökning av elevers föreställningar om betyg
… has been a subject for quite some time is whether there will be a scarcity of metals in the bedrock in the future and whether or not we might end up with a problem similar to that of the big oil crisis in the mid-seventies. Following the oil crisis many oil companies started up …
En undersökning av hur riktvärden för förorenad mark har förändrats gentemot tidigare riktvärden samt hur de påverkas av variationer i geologiska och hydrogeologiska parametrar
… and hydrogeological parameters affect the site-specific guideline values for metals in different ways and others do not. Using the program from the Swedish Environmental Protection Agency is a simple way to calculate site-specific guideline values. It’s important to make sure …
En studie av ureasönderfall under kvävgasatmosfär
… study we also investigated the degradation chain of urea in the presence of metals. Austenitic and ferritic silencer materials with different surface roughness were analyzed to study whether the metals have a catalytic function or effect on the byproduct formation. Those …
En intervju och enkätstudie i Halmstads kommun
… Halmstad, Sweden. Magnetic fines is a complex material containing e.g. ferrous metals, non-ferrous metals, glass, plastic, rubber, polyurethane, sand, dirt, brominated flame retardants and PCB. Characterisation of the material and discussion around area of application resulted …
… Halmstad, Sweden. Magnetic fines is a complex material containing e.g. ferrous metals, non-ferrous metals, glass, plastic, rubber, polyurethane, sand, dirt, brominated flame retardants and PCB. Characterisation of the material and discussion around area of application resulted …
… including arsenic, cadmium and lead. This area must be cleaned from these metals because of the high threat to the environment ant the health of people who live here. This work has been carried out to investigate whether phytoremediation is a realistic remediation method for …
en bedömning av intresset för nya näringsrika produkter
… fertilizer to cropland. Unfortunately not only plant nutrients but also heavy metals, pathogens and organic contaminants tend to accumulate in sludge. The suitability to use sewage sludge in agriculture has therefore been subject to several discussions over the years. The …
rensning av stopp samt uppsamling och attityder
… person at Nytorgsgatan spent at home per day. The concentrations of heavy metals in the urine were low. When using urine as a fertiliser, the amounts of heavy metals to arable land were much below the permitted ones when using sewage sludge as a pertiliser, except for copper …
… built-up time is also important. Cadmium is one of the most serious heavy metals in the crop grains, because of the relatively high amounts taken-up. Cadmium is reaching the soil both together with the fertilizer, which contains cadmium, but there are also some natural content …
… occurs which may produce an acid leachate and the mobilisation of heavy metals bound in the clay or underlying material. The aim of the work has been to improve our understanding of the behaviour of sulphide clays and produce a basis for risk assessment in the future handling of …
en kartläggning som ett steg i golfklubbens miljöarbete
… nutrients. While the metal content of the water was not alarmingly high, some metals were present in elevated concentrations. Some, e.g. iron and copper, come from the fertiliser but the source of elevated concentrations of vanadium is unknown. Kåbo Golf Course is sprayed with …
… These steps all had an influence on the environment through discharge of heavy metals. The area where the copper industry was located is today considered to be of specific national interest due to its valuable nature and cultural values, as well as its value for recreational …
… The reason for not being reliable is that the quantitation limits of these metals are higher than the limit values. An alternative method that should give more reliable values is to analyze with an AAS- instrument with a graphite furnace. The purpose of this project was to …
a metal polluted forest soil in Gusum
… objective was to find information on how high the metalconcentrations are, if metals from the polluted soil affect the surroundings andif the metal contamination affects the microbial community. The soil wasinvestigated using several different methods, such as field XRF …
… seas. At the same time, blackwater is a fraction with a low content of heavy metals and, after sanitization, it can recirculate plant nutrients to arable land using the liquid composting treatment method. Liquid composting means that organic material is degraded under aerobic …
