Application of bentonite in decolorization and refining of animal and vegetable oils

Animal and vegetable oils are indispensable ingredients in daily life, but animal and vegetable oils contain a lot of residues, pigments and odor components, some of which are harmful to health. With the improvement of living standards, the requirements for the quality, purity and taste of animal and vegetable oils are getting higher and higher, which requires decolorization, removal of odors and residue treatment. Activated clay is prepared from bentonite as raw material after being activated by strong oxidants. During the activation process, H will replace the positive ions in the solid layer, such as Ca, Mg, K, Na, etc., causing them to mix together. At the same time, the strong base can also dissolve the aluminum ions in the octahedral structure, and eliminate mineral surface residues, open up pore channels, and significantly expand pore capacity and area. Therefore, the adsorption capacity and decolorizing power of the product are improved. It can be widely used for decolorizing and refining animal and vegetable fats.