Search for dissertations about: "lignite"

Showing result 1 - 5 of 12 swedish dissertations containing the word lignite.

  2. 1. Co-disposal of waste rock and lignite fly ash to mitigate the environmental impact of coal mining

    Author : Asif Qureshi; Björn Öhlander; Christian Maurice; Thomas Pabst; Luleå tekniska universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Acid mine drainage AMD ; coal mine waste rocks; coal fly ash; co-disposal; mixing blending; dry-cover; prevention neutralisation; Tillämpad geokemi; Applied Geochemistry;

    Abstract : Waste rocks (WRs) from coal mining and fly ash (FA) from coal combustion were studied to determine the potential of the WRs to generate AMD, FAs to neutralise it and estimate their impacts on environment. The ultimate goal was to develop a methodology based on co-disposal to mitigate the environmental problems associated to both wastes. READ MORE

  4. 2. Neogene lacustrine deposits in the inland basins of northern Greece : stratigraphy, paleoenvironment, paleomagnetism and industrial usefulness

    Author : Panagiotis Kirittopoulos; Stockholms universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES;

    Abstract : Intensive tectonism in Neogene time created basins and mountain ranges in northern Greece with considerable topographic contrasts. The basins were successively filled with sediments up to a level of about +750 m. READ MORE

  5. 3. Characterization of oxy-fuel flames - their composition, temperature and radiation

    Author : Klas Andersson; Chalmers tekniska högskola; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Combustion; O2 CO2; NO formation; Radiation; Oxy-fuel; Flame properties;

    Abstract : Oxy-fuel combustion is receiving growing attention as one of the promising CO2 capture technologies in connection to power production. Yet, significant efforts are required in research and development of this combustion process in order to be able to design and optimize a full scale power plant. READ MORE

  6. 4. Potential of fly ashes for neutralisation of acid mine drainage from coal mine waste rock

    Author : Asif Qureshi; Josef Mácsik; Luleå tekniska universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Applied Geology; Tillämpad geologi;

    Abstract : Many countries around the world use coal as fuel for the purpose of power generation. The extraction of coal produces large volumes of waste rock (WR) that are sometimes sulphide rich (principally containing iron sulphides such as pyrite (FeS2) and pyrrhotite (Fe1-xS)), with varying quantities of trace elements such as As, Si, Cu, Zn, Ni, Co, Mo and Cr etc). READ MORE

  7. 5. Combustion and Nitrogen Chemistry in Oxy-Fuel Flames

    Author : Daniel Kuehnemuth; Chalmers tekniska högskola; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Nitric oxide; Gasification; Oxy-fuel; Reburning;

    Abstract : Oxy-fuel combustion is a Carbon Capture and Storage (CCS) technology that recently has shown afast progress towards the industrial scale application. In oxy-fuel combustion, oxygen instead of air isused as oxidizer to burn the fuel. The oxygen is mixed with recycled flue-gas in order to control theoverall combustion and heat transfer conditions. READ MORE