SUNFLOWER OIL BLEACHING BY ADSORPTION ONTO ACID-ACTIVATED BENTONITE

被引：29
|
作者：
Foletto, E. L. [1 ]
Colazzo, G. C. [1 ]
Volzone, C. [2 ]
Porto, L. M. [3 ]
机构：
[1] Univ Fed Santa Maria, Dept Chem Engn, BR-88040900 Santa Maria, RS, Brazil
[2] CETMIC CIC CONICET, Ctr Technol Mineral Resources & Ceram, Buenos Aires, DF, Argentina
[3] Univ Fed Santa Catarina, Dept Chem & Food Engn, BR-88040900 Florianopolis, SC, Brazil
来源：
BRAZILIAN JOURNAL OF CHEMICAL ENGINEERING | 2011年 / 28卷 / 01期
关键词：
Acid-treated clays; Bentonite; Oil bleaching; Sunflower oil; PALM OIL; CLAYS; PERFORMANCE; SMECTITES; PINENE;
D O I：
10.1590/S0104-66322011000100018
中图分类号：
TQ [化学工业];
学科分类号：
0817 ;
摘要：
Two bentonite clays with different mineralogical compositions from Mendoza, Argentine, were activated with H(2)SO(4) solutions of 4 and 8 N at 90 degrees C for 3.5 hours. This treatment affected clay structural properties, as was shown by thermogravimetry, infrared spectrometry and chemical analysis. Bleaching efficiency for sunflower oil was strongly dependent on the acid concentration used for clay activation. The samples have bleaching capacity comparable to that observed with a commercial adsorbent standard. The mineralogical composition of natural clays influenced the properties of the activated clays.
引用
收藏
页码：169 / 174
页数：6
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