66 uppsatser · sida 3 av 5
… a load of 300 times the water volume in the columns. For some metals, mainly copper, chromium and mercury the dissolved organic matter affected the removal negatively. The chemical mechanisms causing the removal are specific adsorption to the surfaces of the materials, and for …
Förorenat dagvatten från Stena Gotthards metallåtervinningsanläggning i Eskilstuna har filtrerats genom kolonner innehållande två olika adsorbenter, torv och furubarksflis. Torv är en organisk jordart som främst används som bränsle och furubarksflis är en biprodukt från …
… tank as an isolating element for the piping connections. Also a replacement of copper tubes that have unwanted natural frequencies with shorter pipe lengths or flexible hoses would decrease the vibration transmission.
Bedömning av sulfidmalmgruvan Enåsens eventuella påverkan på sjöns vattenkvalitet
… Ensjön is contaminated by a local source. The surface sediments are high in copper, zinc, nickel and cadmium content. The content is high both compared to the samples from deeper in the sediment core and the surface sediments analyzed in the reference study done in 1980. The …
… to a pH 3 leachate from untreated rock waste The average concentration of copper and zinc in the leachate from untreated waste rock exceeded 100 and 1000 mg/l respectively, while these metals were detected at concentrations around 0.1 and 1 mg/l, respectively, in the leachate …
… thesis still has several problems to solve. One example is the handling of the copper folio. If the unsolved problem are solved and have the data that is assumed will Alfa Laval have two solutions to decide between. Future tests and economical analyzes will show which one is the …
en kartläggning som ett steg i golfklubbens miljöarbete
… 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 fungicides, but at sampling three months after the last fungicide …
Arbets- och anställningsförhållanden vid Åtvidabergs kopparverk 1800-1890
This paper illustrates the working conditions at the copper factory in Åtvidaberg during 1800-1890 from different views. The highest salary was given to the building contractor. Thereafter came in order the rust turners, the garmaker, the melter, the ore booker, the factory …
Ett världsarvs påverkan på marknadsföringen av en destination
… is instead focused on the ”icons” or key products of Falun such as Falun copper mine, the recreation area of Lugnet and the area of Runn, a lake in the Falun area. But the world heritage is something that is present in all marketing material; the focus however is not that great …
Dagvatten från vägar innehåller ofta tungmetaller. De vanligaste metallerna i vägdagvatten är bly, koppar, kadmium, nickel och zink. Dessa föroreningar utgör en belastning i recipienter som tar emot dagvattnet. I denna rapport har bly, koppar och zink reducerats från …
SAMMANDRAG Historisk Simulation, Delta-Normal och RiskMetrics prestation utvärderas med hjälp av Kupiecs Backtest. Value at Risk (VaR) beräknas med tre olika konfidensnivåer utifrån Affärsvärldens Generalindex och HSBC kopparindex. Utifrån överträdelser från verkligt utfall …
… that the pill and condoms were most common contraceptives before pregnancy. Copper coil and hormone coil was the most common contraception after pregnancy. Condom was the most common contraceptive during several contraceptive reproductive phases. The women stated that the most …
Integrering av kemisk, toxikologisk och ekologisk information.
… University in Eskilstuna, Sweden. On the site, high concentrations of copper, zinc and nickel have been detected in the soil in a preliminary investigation of contaminant levels with XRF. For performing the risk assessment of the site according to the triad method, contaminant …
flöden, trender och fältbalanser
… Studied trace elements are arsenic (As), cadmium (Cd), chromium (Cr), copper (Cu),mercury (Hg), manganese (Mn), nickel (Ni), lead (Pb) and zinc (Zn).The balance calculations show that the stores of Cu and Zn are depleted with an average rate of -15% and -6 % over a 100-years …
… yield afterWTR application on any of the three soil types. Concentrations of copper (Cu) weresignificantly higher in Italian ryegrass grown with WTR application (mean 9.3 mg kg-1)compared with the control (7.2 mg kg-1). Both Italian ryegrass and spring barley grown on aclay loam …
