Purification of FAME by rice hull ash adsorption


Ozgul-Yucel S. , TURKAY S.

JOURNAL OF THE AMERICAN OIL CHEMISTS SOCIETY, vol.80, no.4, pp.373-376, 2003 (Journal Indexed in SCI) identifier identifier

  • Publication Type: Article / Article
  • Volume: 80 Issue: 4
  • Publication Date: 2003
  • Doi Number: 10.1007/s11746-003-0706-0
  • Title of Journal : JOURNAL OF THE AMERICAN OIL CHEMISTS SOCIETY
  • Page Numbers: pp.373-376

Abstract

Rice hull ash (RHA) and silica gel were used for purification of FAME by adsorption of FFA at atmospheric conditions. Studies demonstrated that silica gel is a better adsorbent than RHA in purifying FAME. However, both adsorbents were effective in reducing FFA levels from FAME extracts. The FFA adsorption efficiency increased with high FAME concentration and high adsorbent dosage. But FAME adsorption also increased with larger doses of adsorbent. The adsorption isotherms of FFA were determined with both adsorbents. FFA adsorption displayed Freundlich-type isotherms.