Growing Applications of Activated Bleaching Earth in Oil Purification
Activated bleaching earth is a highly efficient adsorbent material widely used for purification, decolorization, and refining processes across various industries. Derived from naturally occurring bentonite clay, it undergoes chemical activation—typically with acids—to enhance its surface area, pore structure, and adsorption capacity. This modification transforms the clay into a powerful clarifying agent capable of removing pigments, gums, phospholipids, heavy metals, oxidation products, and other impurities from liquids. Its strong affinity for unwanted contaminants makes activated bleaching earth a key ingredient in the refining of edible oils, fats, and numerous industrial products.
In the edible oil industry, activated bleaching earth is essential for producing light-colored, stable, and high-quality oils. It helps remove chlorophyll, carotenoids, peroxides, and trace contaminants during the bleaching stage of oil refining. This improves not only the visual appearance but also the oxidation stability and shelf life of oils such as soybean, palm, sunflower, cottonseed, and coconut oil. Its…