Abstract

Diatomite, also known as kieselguhr, or diatomaceous earth, is a naturally occurring, highly structured, fine hydrous silica powder made up of the remains of planktonic algae. Diatomite is used in many applications as the uniquely porous nature of each particle gives diatomite high surface area, low bulk density, high permeability, high water absorption, and low abrasion. Diatomite filter aids are used to prevent blinding of filter elements and are used to clarify liquids in brewing, water treatment, wine making, sugar refining, fruit juice production, and in industrial chemicals. Diatomite functional fillers are used in paints, rubber, plastics, pharmaceuticals, toothpastes, polishes, and chemicals where performance is improved by the unique properties of diatomite.