Liquefaction of sunflower stalk by using supercritical extraction

Erzengin M., Kucuk M.

ENERGY CONVERSION AND MANAGEMENT, vol.39, no.11, pp.1203-1206, 1998 (SCI-Expanded) identifier identifier

  • Publication Type: Article / Article
  • Volume: 39 Issue: 11
  • Publication Date: 1998
  • Doi Number: 10.1016/s0196-8904(97)10007-3
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Page Numbers: pp.1203-1206
  • Van Yüzüncü Yıl University Affiliated: No


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.