Surface properties of an activated bentonite. Decolorisation of rape-seed oils

被引：0

作者：

Srasra, E. ^{[1
]}

Bergaya, F. ^{[1
]}

Van Damme, H. ^{[1
]}

Ariguib, N.K. ^{[1
]}

机构：

[1] Cent de Chimie Appliquee, Tunisia

来源：

Applied Clay Science | 1989年 / 4卷 / 5-6期

关键词：

Clay Minerals--Activation - Pigments--Adsorption - Vegetable Oils--Bleaching;

D O I：

10.1016/0169-1317(89)90019-7

中图分类号：

学科分类号：

摘要：

The decolorisation of rape-seed oils by a recently discovered Tunisian bentonite was tested. It is proved that this clay has a valuable high decolorizing power after appropriate activation by acids. We have tried to relate the adsorption of a model colored molecule (β-carotene) with the modified surface properties of the activated clay. The results of this study show that only a few strong acidic sites due to activation are responsible for the partial removal of the pigments coloring the oils.

引用

页码：411 / 421