Soybean oil bleaching by Al-pillared montmorillonite

Abstract

AI-pillared montmorillonite was synthesized from raw clay, mined at Šipovo Srpska Republic. Its textural properties and bleaching capacity were compared with some commercial adsorbents and filtration aid materials commonly used in domestic oil industry. The bleaching capacity of AI-pillared montmorillonite is lower than that of commercial Super Celite L748 (Johns Manville, USA) or Perfit PF-3 (Termika dd., Zrenjanin Yugoslavia), but somewhat is higher than the bleaching capacity of pure montmorillonite. The results suggest that the bleaching capacity of the investigated samples is primarily determined by average pore diameter and not by specific surface area.

Keywords

• soybean oil
• bleaching capacity
• montmorillonite
• AI-pillared montmorillonite
• texture