Search for dissertations about: "sulphur speciation"

Found 5 swedish dissertations containing the words sulphur speciation.

2. 1. Cadmium Distribution and Speciation by Synchrotron Radiation Induced X-Ray Microprobe Techniques Application to Municipal Solid Waste and Biomass Fly Ashes

   Author : Caterina Camerani Pinzani; Chalmers tekniska högskola; []
   Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; leaching; speciation; MSW; biomass; affinity; synchrotron radiation based micro-probe techniques; Ca-containing matrices; cadmium; fly ashes;

   Abstract : During the last few years, alternative fuels, such as wood and Municipal Solid Waste (MSW), are increasingly being used in Sweden for heat and power production. The positive environmental impact in terms of low sulphur emissions, no net emission of CO2 to the atmosphere, and local availability are main driving forces in this development. READ MORE

4. 2. Studies of Tropospheric and Stratospheric Aerosol using Ion Beam Analysis

   Author : Giorgos Papaspiropoulos; Kärnfysik; []
   Keywords : NATURVETENSKAP; NATURAL SCIENCES; atmosphere; Aerosols; troposphere; stratosphere; ion beam analysis; PIXE; impactors; particulate sulphur; chemical speciation; elemental analysis; thermography; Physics; Nuclear physics; Fysik; Metrology; Kärnfysik; physical instrumentation; Metrologi; fysisk instrumentering; Fysicumarkivet A:2001:Papaspiropoulos;

   Abstract : Atmospheric aerosol particles are believed to have an impact on the radiative forcing of the earth's surface. The predicted results indicate a net cooling effect on the global climate, however there are few studies available to substantiate this and experimental data are needed. READ MORE

5. 3. Mercury immobilization : a requirement for permanent disposal of mercury waste in Sweden

   Author : Margareta Svensson; Bert Allard; Anders Düker; Björn Öhlander; Örebro universitet; []
   Keywords : NATURVETENSKAP; NATURAL SCIENCES; mercury; mercury sulphide; cinnabar; stabilization; solidification; encapsulation; monolith leaching; solubility; mercury speciation; diffusion; apparent diffusion coefficient; Chemistry; Kemi; Enviromental Science; Miljövetenskap;

   Abstract : The Swedish Government states that mercury in the Swedish industry and private use shall be collected and waste containing more than 1% of mercury shall be conditioned for permanent storage in proposed groundwater-saturated repository in deep bedrock. The owners of mercury waste in Sweden are responsible for finding ways to the conversion of the mercury waste to insoluble forms. READ MORE

6. 4. Remediation of mercury polluted soil

   Author : Thomas Lifvergren; Bert Allard; Örebro universitet; []
   Keywords : soil pollution; soil remediaion; mercury; NATURAL SCIENCES; NATURVETENSKAP; Enviromental Science; Miljövetenskap;

   Abstract : Mercury in contaminated soil constitutes a wide spectrum of species with highly different properties due to the chemical complexity of the element. Assessments of risk, ecological effects and removal potential require process and mobility studies. READ MORE

7. 5. Flotation chemistry of complex sulphide ores : recycling of process water and flotation selectivity

   Author : Fatai Kolawole Ikumapayi; Jaakko Leppinen; Luleå tekniska universitet; []
   Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Mineral Processing; Mineralteknik;

   Abstract : Recycling of flotation effluents through the ore processing plant is one of the ways of reducing both plant-operating costs and industrial impact onto the local ecosystem. Such waters named acid mine drainage (AMD), if discharged from sulphide flotation are gypsum (CaSO4.H2O) saturated and have a high salinity (on the order of 1000 ppm). READ MORE