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Showing result 1 - 5 of 22 essays matching the above criteria.

1. 1. If Trees Could Talk - Dendrochemistry, a Promising Method for Understanding Pollution History

   University essay from Göteborgs universitet/Institutionen för geovetenskaper

   Author : Jonatan Uusitalo; [2023-08-17]
   Keywords : ;

   Abstract : Heavy metal pollution presents a significant environmental challenge in the Anthropocene era, and understanding pollution history is crucial to address historical pollution and implementing effective mitigation measures. This study stands among a few comprehensive dendrochemical investigations that utilized an extensive dataset and energy dispersive X-ray fluorescence (EDXRF) technique to reconstruct the contamination history of As, Cd, Cu, Ni, Pb, and Zn, with a focus on Cu. READ MORE

3. 2. Simulation strategies for improved contamination modeling of liquid dynamics on automotive surfaces

   University essay from Linköpings universitet/Mekanisk värmeteori och strömningslära

   Author : Thisal Mandula Sugathapala; Twan Bakker; [2022]
   Keywords : Volume of Fluid; Contamination modeling; Blended Kistler model; Dynamic contact angle models; Exterior water management; Light-induced fluorescence imaging; Multiphase flows; Surface flows; Computational fluid dynamics; Sensor soiling;

   Abstract : A significant level of research is currently being carried out in the development of driver support systems as they are expected to play a key role in minimizing road vehicle accidents and creating a safe driving environment under harsh weather conditions. However, the performance of some components used by existing driver support systems like LIDAR and visual cameras are affected by extreme weather conditions such as heavy rain fall and snow. READ MORE

4. 3. Cobalt and nickel concentrations in the Uppsala clay deposits : solubility and risk assessment

   University essay from SLU/Dept. of Soil and Environment

   Author : Ali Reza Sadeghi; [2020]
   Keywords : heavy metals; soil contanimation; geochemically active fraction; leaching test; guideline value; site-specific guideline value;

   Abstract : Heavy metals create a contamination problem in soils. Examples of heavy metals are Ni, Co, and Cu. Soil environment and minerals existing in the soil such as Fe and Mn oxides affect the presence of these heavy metals. In this thesis, the cobalt and nickel concentrations of selected soil samples from different locations in Uppsala were determined. READ MORE

5. 4. Metal mobility and transport from an oil-shale mine, Lake Nõmmejärv, Estonia

   University essay from Stockholms universitet/Institutionen för naturgeografi

   Author : Åsa Ekelund; [2020]
   Keywords : Mine waste; Heavy metals; Oil shale; Lake sediments; Lake Nõmmejärv; Human impact; Kurtna kame field; Estonia.;

   Abstract : Mining activities have a large impact on the environment, for example by the release of heavy metals from acid mine drainage and erosion of mine waste. North-eastern Estonia has the largest commercially exploited oil-shale deposit in the world. READ MORE

6. 5. Distribution and mobilization of heavy metals at an acid mine drainage-affected region, South China

   University essay from Linköpings universitet/Tema Miljöförändring

   Author : Chen Luo; [2020]
   Keywords : acid mine drainage; arsenic; cadmium; geochemical modeling; heavy metals; lead; principal component analysis;

   Abstract : Dabaoshan Mine Site (DMS) is the biggest polymetallic mine in South China. The Hengshi River receives acid mine drain (AMD) waste leaching from the tailings pond and run-off from the treatment plant which flows into the Wengjiang River, Beijiang River, before discharging into the Pearl River. READ MORE