Performance of an Argentinian acid-activated bentonite in the bleaching of soybean oil

被引：35

作者：

Foletto, EL

Volzone, C

Porto, LM

机构：

[1] Univ Fed Santa Catarina, Dept Engn Quim & Engn Alimentos, BR-88040900 Florianopolis, SC, Brazil

[2] CETMIC, RA-1897 Manuel B Gonnet, Buenos Aires, Argentina

来源：

BRAZILIAN JOURNAL OF CHEMICAL ENGINEERING | 2003年 / 20卷 / 02期

关键词：

clay; acid-activated bentonite; bleaching; soybean oil;

D O I：

10.1590/S0104-66322003000200007

中图分类号：

TQ [化学工业];

学科分类号：

0817 ;

摘要：

In this work, a bentonite clay from Mendoza, Argentina was activated with H2SO4 (4 and 8 N) at 90degreesC for 2 and 3.5 hours. Under these conditions several cations were removed from the octahedral sheet (Mg, Al, and Fe) and the DTA-TGA curves of the solids obtained after treatment were modified. Treatment time and acid concentration increased the degree of destruction of the bentonite structure. Activated samples were tested in order to verify their capacity to bleach soybean oil and were compared to a standard commercial bleaching clay. Treated samples are more efficient in bleaching than the standard.

引用

页码：139 / 145

页数：7

共 12 条

[1] ACID ACTIVATION OF A PALYGORSKITE WITH HCL - DEVELOPMENT OF PHYSICOCHEMICAL, TEXTURAL AND SURFACE-PROPERTIES [J].