Liquefaction of sunflower stalk by using supercritical extraction

Erzengin M., Kucuk M.

ENERGY CONVERSION AND MANAGEMENT, cilt.39, sa.11, ss.1203-1206, 1998 (SCI İndekslerine Giren Dergi) identifier identifier

  • Cilt numarası: 39 Konu: 11
  • Basım Tarihi: 1998
  • Doi Numarası: 10.1016/s0196-8904(97)10007-3
  • Sayfa Sayıları: ss.1203-1206


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.