Essays about: "heavy metal contamination"

Showing result 6 - 10 of 22 essays containing the words heavy metal contamination.

  1. 6. Copper bioaccumulation in blue mussels and periwinkles from marinas

    University essay from Högskolan i Halmstad/Akademin för ekonomi, teknik och naturvetenskap

    Author : Tomas Sjökvist; [2019]
    Keywords : Littorina littorea; Mytilus edulis; antifouling paint; invertebrates; biomonitoring;

    Abstract : Copper (Cu) is a heavy metal that is essential for life but toxic at high concentrations. This toxic effect is used on boats to prevent biofouling on boat hulls by painting the hulls with antifouling paint that contain high levels of Cu. The Cu is slowly diffused out in the water and accumulated by animals higher up in the food chain. READ MORE

  3. 7. Mouthpart deformities of Chironomid larvae as an indicator of heavy metal polluted water

    University essay from Umeå universitet/Institutionen för ekologi, miljö och geovetenskap

    Author : Tim Lindström Jonsson; [2019]
    Keywords : Chironomidae larvae; Deformities; Heavy metals; Biomonitoring; Mining; Northern Sweden;

    Abstract : Freshwater ecosystems are under increasing pressure from a variety of contaminants, including heavy metals from mining operations, which can have complex effects that are difficult to evaluate. To detect early warnings from elevated concentrations of metals, organisms are sought to be used as monitoring tools. READ MORE

  4. 8. Increased leaching of metals as a result of foundation work

    University essay from KTH/Hållbar utveckling, miljövetenskap och teknik

    Author : Emmy Mattisson; [2018]
    Keywords : Principal components analysis; Modified double mass analysis; Geochemistry; Sulphide bedrock; Remediation methods; Surface water pollution;

    Abstract : Heavy metal contamination in the environment is a global issue that is likely to increase in the future. This report investigates a construction area in which increased concentrations of the heavy metals cadmium, cobalt, copper, nickel and zinc and a decreased pH-value has been observed in the surface water recipient. READ MORE

  5. 9. Using LCA and LCC in Planning Industrial Symbiosis : A study of the handling of sewage sludge in Malmö, Sweden

    University essay from Linköpings universitet/Industriell miljöteknik

    Author : Mårten Wiktor; Izabelle Johansson; [2018]
    Keywords : Sewage sludge; LCA; LCC;

    Abstract : Sewage sludge is currently being disposed by spreading it out on fields, an action that recycles important nutrients such as phosphorus, but also leads to heavy metal contamination. With impeding regulation changes, possibly making it harder or impossible to keep current practice, waste water treatment plants are reviewing their options. READ MORE

  6. 10. Using plants to remediate wastewater produced from the cleaning process of blasted rock materials

    University essay from Stockholms universitet/Institutionen för ekologi, miljö och botanik

    Author : Karin Nilsson; [2018]
    Keywords : blasted rock; tunneling; wetlands; phytoremediation; nitrogen;

    Abstract : Water pollution is one of society’s most crucial issues which has a negative impact on water quality. The cleaning of blasted rock materials is a process which produces wastewater containing nitrogen and other pollutants such as heavy metals due to explosives residue from blasting. READ MORE