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Browsing by Author "Kucuk, MM"

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    Biomass Conversion Processes
    (Pergamon-elsevier Science Ltd, 1997) Kucuk, MM; Demirbas, A
    Three different biomass conversion processes, thermochemical, chemical and biochemical, are reviewed based on the results of some investigations. The important parameters for thermochemical processes are temperature, pressure, time at reaction conditions and added reactants or catalysts, for chemical processes are acid concentration, prehydrolysis, temperature, time at reaction conditions and kind and moisture of used material and for biochemical processes are reaction temperature, pH, moisture and time at reaction conditions. Copyright (C) 1996 Elsevier Science Ltd
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    Article
    Liquefaction of Sunflower Stalk by Using Supercritical Extraction
    (Pergamon-elsevier Science Ltd, 1998) Erzengin, M; Kucuk, MM
    Sunflower stalk mill was converted to liquid products by using some organic solvents (methanol, ethanol and acetone) with catalyst (% 10 NaOH) and without catalyst in an autoclave at different temperatures, 523 and 563 K. The liquid products were extracted by liquid-liquid extraction (benzene and diethyl ether). The yields of supercritical methanol, ethanol and acetone extractions were 40.00, 45.60 and 47.80%, respectively, at 563 K. In the catalytic runs, the methanol and ethanol extractions were 58.03 and 54.17%, respectively, at 563 K. The yields of supercritical methanol extraction have been increase From 38.52 to 58.03% as the temperature increased from 523 to 563 K in the catalytic run. (C) 1998 Elsevier Science Ltd. All rights reserved.