Oil Shale

2006 Estonian Academy Accoal 18 ash content asphaltite bed material height bed temperature bioaugmented biomass biomass samples black alder carbon catalyst coal combustible recovery compressive strength concrete mixtures decrease deep desulfurization Desulfurization and novel desulfurization process Dictyonema diesel fuel effect environment environmental Estonian Estonian Academy Publishers Estonian oil shale excess air factor fluidized bed fluidized bed combustion g/tonne grey relational analysis hydrocarbon hydrodesulfurization hydrogen hydrotreating impact increase ionic liquids kukersite MgSO4 mineral modulus of elasticity N2O emission Narva obtained oil shale ash oil shale mining opencast oxidation particle Portland cement production pulp density pyrolysis recultivation reserves Rock-Eval root tip Scots pine secondary air ratio semicoke hills shale oil short roots short-root parameters Sillamae silver birch Sirgala sodium silicate soil sorbents sulfur sulfur compounds sulfur content sulphate Tallinn Technology Thermal conductivity tion tree species values waste depository