Bleaching clay is a type of adsorbent clay or earth which in both activated or nonactivated form, is used in the process of decolorization of liquids, such as oils and fats without any chemical treatment. It mainly consists of clay minerals such as saponite, montmorillonite, and beidellite mixed with mineral fragments such as biotite, quartz, and feldspar. It is mainly used in refining and purifying petroleum products, edible oils, and fats. Bleaching clay is also known as fuller’s earth and whitening clay