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 (SCI-Expanded) identifier identifier

  • Publication Type: Article / Article
  • Volume: 80 Issue: 4
  • Publication Date: 2003
  • Doi Number: 10.1007/s11746-003-0706-0
  • Journal Name: JOURNAL OF THE AMERICAN OIL CHEMISTS SOCIETY
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Page Numbers: pp.373-376
  • Keywords: adsorption, adsorption isotherms, competitive adsorption, fatty acid methyl ester, rice hull ash, FATTY-ACIDS, BRAN OIL, ESTERIFICATION, ISOTHERMS
  • Yıldız Technical University Affiliated: No

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.