Sökning: "Arsenic contamination"
Visar resultat 1 - 5 av 56 uppsatser innehållade orden Arsenic contamination.
1. Investigating the potential correlations between metal and metalloid concentrations and soil color : A Minor Field Study on the island province of Marinduque, Philippines
Kandidat-uppsats, KTH/Hållbar utveckling, miljövetenskap och teknikSammanfattning : This study was carried out as a bachelor's thesis at KTH Royal Institute of Technology during the spring of 2023, investigating the correlation between the color with the concentration of various metal and metalloids (MMs) in the soil of Marinduque, The Philippines. With a history of mineral exploitation, notably copper and gold, the island has faced persistent environmental challenges, exemplified by the catastrophic waste spills in 1993 and 1996 that contaminated the Boac and Mogpog Rivers. LÄS MER
2. Fastläggning av arsenik i en anoxisk akvifär med nollvärt järn i nanostorlek : Uppföljning av ett pilotskaleförsök
Uppsats för yrkesexamina på avancerad nivå, Uppsala universitet/Luft-, vatten- och landskapsläraSammanfattning : Förorenad mark är ett problem som kan hota ekologiska värden samt skada människors hälsa. Det finns flera åtgärder för föroreningar både ex-situ och in-situ. På senare tid har användningen av nollvärt järn som in-situ åtgärd studerats, men har inte använts tidigare i Sverige. LÄS MER
3. Spatial analysis of arsenic and fluoride mobilization in groundwater around Mount Meru, northern Tanzania
Master-uppsats, KTH/Hållbar utveckling, miljövetenskap och teknikSammanfattning : In Tanzania, approximately 76% of the drinking water supplies is dependent on groundwater sources. However, the groundwater in north Tanzania is susceptible to contamination by arsenic and fluoride. This study examines the spatial analysis of arsenic and fluoride mobilization in groundwater around Mount Meru, located in northern Tanzania. LÄS MER
4. Utvärdering av Tväråns vattenkemi : Källor för metaller och organiska ämnen
Kandidat-uppsats, Umeå universitet/Institutionen för ekologi, miljö och geovetenskapSammanfattning : Tvärån is an urban stream close to the center of Umeå that serve as a recipient of contaminants from various industries. Therefore, the county administrative board (Länsstyrelsen) in Västerbotten were interested in a compilation of water chemistry data from earlier studies done in Tvärån. LÄS MER
5. Long-term Effect of Metallic Iron Sorbents on Arsenic Mobility in an Anoxic Aquifer : An assessment based on long-term column experiments
Master-uppsats, SLU/Dept. of Soil and EnvironmentSammanfattning : Zero valent iron (ZVI) sorbents have successfully remediated soils burdened with different groups of contaminants. When working to alleviate arsenic (As) contamination, the location-specific subsurface chemistry greatly affects the efficiency of the sorbents as it controls the speciation of As and the transformation of the ZVI, as well as the interaction between these (remediating mechanisms). LÄS MER