Abstract
Different biomass waste materials were gasified by steam up to 850 °C, employing a fixed bed reactor and a thermal analysis-mass spectrometer unit. Raw fuels and biochars were characterized, while bio-oil, pyrolysis gas and syngas were quantitatively analyzed. Gasification efficiency and energy potential of all solid, liquid and gaseous products were determined. The higher heating value of biochar particles, bio-oil and pyrolysis gas ranged between 16-28 MJ/kg, 21.4-33.4 MJ/kg and 10.2-13.5 MJ/m3, respectively. Organic matter was almost completely converted to syngas and lower quantities of CO2, CH4 and hydrocarbons upon steam gasification, with H2 yield reaching values up to 60%. The higher heating value of syngas produced varied between 9.8 MJ/m3and 11.4 MJ/m3.
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