Essays about: "PHREEQC"

Showing result 1 - 5 of 8 essays containing the word PHREEQC.

  1. 1. Assessing the controls of the fluoride concentrations in the groundwater of Gothenburg area

    University essay from Göteborgs universitet/Institutionen för geovetenskaper

    Author : Crayton Enga Bessong; [2022-11-04]
    Keywords : Fluoride; Groundwater; Fluorite; Solubility; Fluorosis; Idefjorden Terrane;

    Abstract : The human uptake of fluoride can promote healthy teeth in low concentration (1.5 mg/l). Drinking water is a major route to which we humans are expose to fluoride intake. READ MORE

  3. 2. Petrography and Thermodynamic Modelling of Svecofennian Arsenic-bearing Metasupracrustal Rocks in the Arlanda Area, West-Central Fennoscandian Shield

    University essay from Uppsala universitet/Institutionen för geovetenskaper

    Author : Klara Skoog; [2022]
    Keywords : Bergslagen; Svecokarelian orogeny; metamorphism; arsenic; optical microscopy; electron microprobe; thermodynamic modelling; Bergslagen; Svecokarelska orogenesen; metamorfos; arsenik; optisk mikroskopering; elektron mikrosond; termodynamisk modellering;

    Abstract : The Arlanda area is a construction intensive area facing problems with risk of leaching of arsenic (As) from the bedrock to surface- and groundwater. Construction projects in the area have had problems with high levels of As in the bedrock and the risk of leaching increases through processing of aggregates and blasting of the bedrock. READ MORE

  4. 3. Geochemical tracing of Arsenic sources in groundwater at the remediated Storliden mine, Skellefte district

    University essay from Luleå tekniska universitet/Institutionen för samhällsbyggnad och naturresurser

    Author : Matilda Edvardsson; [2021]
    Keywords : Arsenic; groundwater; Sulfide oxidation; Arsenopyrite; Storliden; remediation; Arsenik; grundvatten; sulfidoxidation; Arsenikkis; Storliden; efterbehandling;

    Abstract : The Swedish mining industry has changed from the historical situation with several smaller mines to the present situation with a few, bigger mines. This results in presence of abandoned mines around Sweden. Remediation of mines is regulated by legislation and the present demands are considerably higher than it was some decades ago. READ MORE

  5. 4. Leaching of Glass Waste – Structure and Humidity Cell Tests

    University essay from Uppsala universitet/Institutionen för geovetenskaper

    Author : Elin Sandgren; [2019]
    Keywords : Glass structure; glass leaching; glass modifiers; humidity cell test; saturation index; arsenic; lead.; Glasstruktur; lakning av glas; glasmodifierare; fuktkammarförsök; mättnadsindex; arsenik; bly.;

    Abstract : Glass production has historically occurred at around 50 glassworks in Sweden, in a region known as the Kingdom of Crystals (Glasriket). Today, most of these sites are no longer active and left behind is glass waste of different forms (both as fragments of finished glass as well as unrefined glass melts). READ MORE

  6. 5. Fate of Heavy Metals in Waste to Energy (WtE) Processes

    University essay from KTH/Skolan för kemivetenskap (CHE)

    Author : Ninus Chamoun; Viktor Kjellvertz; William Mahajan; Yuanchao Song; [2016]
    Keywords : Wastewater treatment; Removal of heavy metals; Precipitation; Condensate treatment; Modelling with PHREEQC and Medusa;

    Abstract : This study was made to increase the understanding of how heavy metals in the aqueous phase are removed at low initial concentrations in different pH and Eh values. The reaction that has been studied is mainly hydroxide precipitation and adsorption in a condensate treatment. READ MORE