Capacity of an Acid-activated Somas Bentonite in the Bleaching of Soybean Oil
The bleaching of edible oils, industrial oils, and some chemicals may be achieved using natural and acid-activated clays. These materials remove impurities and pigments from the oils.In this work, a bentonite clay from Turkey (Somas bentonite) was activated with different coneentration of H2SO4 and HCl at 70～90℃ and 5～8 hours. Under these conditions several cations were removed from natural bentonite (Al, Mg, and Fe) and DTA-TGA, FT-IR curves of the solids obtained after acid treatment were examined. Treatment time and acid concentration increased the degree of destruction of the bentonite structure which was determined by ICP. Activated samples were tested in order to verify their capacity to bleach soybean oil and compared to standard commercial bleaching clays. The experimental results indicate that treated samples with H2SO4 have the same efficient in bleaching crude soybean oil with the standards and treated sample with HCl is more efficient in bleaching than the commercial products.
Clay Acid activation Bentonite Bleaching Soybean oil Somas
S. Sarioglan H. Yuzer M. Koral
TUBITAK Marmara Research Center, Chemistry and Environment Institute, Kocaeli, Turkey
国际会议
XXIV International Mineral Processing Congress(第24届国际矿物加工大会)
北京
英文
3298-3303
2008-09-24（万方平台首次上网日期，不代表论文的发表时间）