Sökning: "heavy metal"
Visar resultat 21 - 25 av 213 avhandlingar innehållade orden heavy metal.
21. Development of a Low Cost Remediation Method for Heavy Metal Polluted Soil
Sammanfattning : High concentrations of heavy metals in the soils have potential long-term environmental and health concerns because of their persistence and accumulation tendency in the environment and along the food chain. This study was aimed at studying the feasibility of heavy metals removal from the soil using plants naturally growing in the surroundings of selected polluted sites in Tanzania and soil application of the sorbent materials zeolite and autoclaved aerated concrete (AAC). LÄS MER
22. Evolutionary and Ecological Effects of Metal Pollution on Coastal Diatoms
Sammanfattning : Oceans are changing rapidly in response to human activities, such as toxic pollution, eutrophication, and climate change. Diatoms are major primary producers in the oceans with short generation times, flexible reproductive strategies, and high standing genetic diversity. LÄS MER
23. Polysaccharides from red and green seaweed : Extraction, characterisation and applications
Sammanfattning : Cultivation of seaweed has been conducted for centuries in Asia, but is largely undeveloped in Sweden even though there is potential for this industry. Seaweed offers benefits compared with land-based biomass cultivation. LÄS MER
24. Revealing the potential of Nordic microalgae : turning waste streams into resources
Sammanfattning : As the world's population grows, the demand for fresh water, food, fuel, energy and modern technology increases tremendously. Not only does this require enormous amounts of resources but it also increases the amount of waste and especially wastewater. LÄS MER
25. Liquid phase sintering of W-Ni-Fe composites : liquid penetration, agglomerate separation and tungsten particle growth
Sammanfattning : The initial stage of liquid phase sintering, involving liquid penetration, agglomerate separation, particle spreading and growth has been investigated in experiments using tungsten heavy alloys. The particle composites used were produced by hot isostatic pressing (HIP) of pure powder mixtures of W-Ni-Fe-(Co). LÄS MER