How does diatomaceous earth know its application in oil decolorization?

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Diatomaceous earth itself has a strong adsorption effect, adsorbing pigments and other impurities in oil under certain conditions, thus achieving the purpose of decolorization. The oil treated by adsorbent can not only improve the oil color and remove the gum, but also effectively remove some trace metal ions in the oil and some substances that can cause hydrogenation Catalyst poisoning, thus providing good conditions for further refining of the oil.

Diatomite is evolved from the remains of single celled Potassium silicate shells under the effect of natural forces. Diatomaceous earth with good purity is white, usually light gray or light reddish brown. The primary chemical component is silicon dioxide, which has a certain adsorption capacity for pigments. However, the decolorization coefficient is medium, and the oil absorption rate is high. It is often used as a filter aid in oil and fat industry production.

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