Pyrolysis of sunflower seed hulls for obtaining bio-oils

Bioresour Technol. 2015 Feb:177:406-9. doi: 10.1016/j.biortech.2014.11.105. Epub 2014 Dec 4.

Abstract

Bio-oils from pyrolysis of as received sunflower seed hulls (SSH), hulls previously washed with acid (SSHA) and hulls submitted to a mushroom enzymatic attack (BSSH) were analyzed. The concentration of lignin, hemicellulose and cellulose varied with the pre-treatment. The liquid corresponding to SSH presented a relatively high concentration of acetic acid and a high instability to storage. The bio-oil from SSHA showed a high concentration of furfural and an appreciable amount of levoglucosenone. Lignin was degraded upon enzymatic activity, for this reason BSSH led to the highest yield of bio-oil, with relative high concentration of acetic acid and stability to storage.

Keywords: Bio-oil; Bio-transformation; Biomass; Pyrolysis; Sunflower seeds hulls.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Agaricales / enzymology
  • Biofuels*
  • Biomass
  • Biotechnology / methods*
  • Charcoal / chemistry
  • Differential Thermal Analysis
  • Gases / chemistry
  • Helianthus / chemistry*
  • Hot Temperature*
  • Seeds / chemistry*
  • Sulfuric Acids / pharmacology
  • Thermogravimetry
  • Waste Products / analysis*

Substances

  • Biofuels
  • Gases
  • Sulfuric Acids
  • Waste Products
  • biochar
  • Charcoal
  • sulfuric acid