Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
Results
Showing 1 to 18 of 18 for “"Flue gas desulfurization"”.
-
Evaluation of modified dry limestone process for flue gas desulfurization
… of the Modified Dry Limestone Process (MDLP) for flue gas desulfurization. Two types of limestone, one calcitic and one dolomitic, were used. These materials were characterized by ICP analysis, X-ray diffraction, optical microscopy, SEM, and electron microprobe before and after reaction. …
-
Liming Characteristics of a High-Calcium, Dry Flue Gas Desulfurization By-product and its Effects on Runoff Water Quality
<p>In 2013, only 37% of the 32 million Mg of flue gas desulfurization (FGD) by-products generated in the United States were reused beneficially. If FGD by-products could be used as a beneficial soil amendment, millions of megagrams may be diverted away from surface impoundments and landfills. The …
-
Studies of the Catalysis and Inhibition of the Oxidation of Aqueous Sulfur(iv) Solutions; Effects on Flue Gas Desulfurization Processes
Made available in DSpace on 2014-12-13T18:55:40Z (GMT). No. of bitstreams: 1 7913495.pdf: 9708495 bytes, checksum: b15bf16e945415b1699522ceb1fa36d9 (MD5) Previous issue date: 1978
-
Impact of Surface Application of Flue Gas Desulfurization Gypusum on Infiltration, Phophorus Behavior, and Total Sulfur in a Previously Manured Coastal Plain Soil
Flue gas desulfurization (FGD) gypsum was surface-applied on a poorly drained cultivated Coastal Plain soil in Maryland containing excessive amounts of plant-available phosphorus (P). Using a constant head double-ring infiltrometer, a field experiment indicated a slight increase in final …
-
Arsenic and Selenium Distribution in Coal-Fired Plant Samples
… of coal, fly ash, bottom ash, economizer ash, Flue Gas Desulfurization (FGD) slurry and flue gas taken from four power plants with the goal being to examine the distribution of these metals in these materials and calculate a materials balance for the system. All samples were analyzed using …
-
Characterizing and modeling the hydrologic properties of coal combustion by-products in landfills
… CCBs include fly ash, bottom ash, and flue gas desulfurization product (FGD gypsum). This investigation focused on determination of the saturated and unsaturated hydraulic properties of fly ash and bottom ash to then be used in order to develop a 1-dimensional unsaturated flow model. …
-
State policy effects on sulfur dioxide emission allowance trading
… biased towards costly capital investments in flue gas desulfurization (scrubber) retrofits would become net allowance sellers in the national market. However, the research finds that these state policies, along with several other factors (including the Phase I Extension program, the tax …
-
Process modeling and analysis of CO₂ purification for oxy-coal combustion
… high concentration oxygen stream and the product flue gas consists primarily of CO₂ and H₂0 with contaminants like NOx, SOx, and non-condensable gases like argon, oxygen and nitrogen. For carbon sequestration and Enhanced Oil Recovery (EOR) applications, pipeline transport standards as well as …
-
Impacts of environmental policy in China's Beijing-Tianjin-Hebei region : a case study of the iron and steel industry
… the value of a flexible option to install flue-gas desulfurization (FGD) technology for sulfur dioxide (SO₂) removal in response to uncertain developments in environmental policy. Case study results show a significant increase in the NPV of a steel facility that has the ability to employ …
-
Design and construction of test apparatus for SO₂ adsorption research
… great need for a regenerable, negligible waste, flue gas desulfurization system that can economically compete with existing, non-regenerable, considerable waste systems. Experimental apparatus was designed and constructed for use in future investigations of the adsorption of SO₂ from a simulated …
-
Analysis of coal combustion by-product disposal practices in an arid climate : leachate water quality
… of fly ash, bottom ash, and sludge from the flue gas desulfurization process and have elevated concentrations of hazardous constituents. There is concern that disposal of these materials in an unlined surface mine may cause ground and surface water contamination. This research project focused …
-
Geochemical and Isotopic Characterization of Coal Combustion Residuals: Implications for Potential Environmental Impacts
… annually, encompassing fly ash, bottom ash, and flue gas desulfurization materials. The range and blends of CCRs varies substantially across coal-fired plants and depends on a unique set of circumstances for each plant and coal source. Current U.S. regulations mandate the installation of advanced …
-
Determining the Mobility of Metals Through Coal Combustion Byproducts in Surface Impoundments by Analyzing Leachate From Modified Saturated Hydraulic Conductivity Tests
… (fly ash, bottom ash, boiler slag, and flue gas desulfurization (FGD) material). It is recommended that an economic feasibility study be conducted on the ash pond(s) at GPC's Plant Arkwright, a plant that is to cease operations in the near future, to see if it is economically feasible to …
-
Flash calcination of limestone in a bench-scale sorbent activation process (SAP) unit
… the total electricity in the United States. The flue gas generated from burning coal contains air pollutants including sulfur oxides (SOx), hydrochloric acid (HCl) and elemental and ionic mercury (Hgo and Hg2+). A process option to remove these pollutants from the flue gas is by injection of …
-
NEW APPROACHES FOR MITIGATING ENVIRONMENTAL CONCERNS ASSOCIATED WITH COAL AND COAL COMBUSTION PRODUCTS
… Mercury can be found in fly ash, bottom ash, and flue gas desulfurization (FGD) material. The Hg is transferred to these coal combustion products (CCPs) from its associated parent coal. These CCPs absorb a significant amount of the Hg released during the combustion process. With the EPA's recent …
-
Biogeochemical Transformations of Trace Element Pollutants During Coal Combustion Product Disposal
… made up principally of bottom ash, fly ash, and flue gas desulfurization materials. The chemical composition of coal ash varies depending on the feed coal source, combustion parameters, and the presence and type of air pollution control devices that remove contaminants from the flue gas into the …
-
Snížení emisí SO2 ve spalinách z fluidního kotle
Úkolem práce je navrhnout technologii odsíření spalin fluidního kotle. Současný stav technologie není schopen zajistit odsíření spalin na požadovanou úroveň. Z tohoto důvodu je potřeba vybudovat dodatečné odsiřovací zařízení. Teoretická část práce pojednává o emisních limitech oxidu siřičitého, …