Bleaching Clays & Adsorbents

Bleaching Earths & Activated Clays

Natural and activated bleaching earths are high-performance adsorbents used for purification, color removal, and contaminant reduction in oils, fuels, and industrial products. Their high surface area and tailored acidity make them ideal for refining edible oils, treating renewable fuels, and polishing chemical intermediates - delivering clarity, stability, and consistent product quality.

Key Applications

Edible oil refining: Removes pigments, soaps, trace metals, and oxidation by-products from vegetable and animal fats.
Renewable diesel & biodiesel: Treats feedstocks to adsorb color bodies, metals, and polar impurities prior to hydrotreating.
Chemical & cosmetic processing: Clarifies waxes, surfactants, and intermediates without altering chemical structure.
Industrial purification: Used in paraffin, mineral oil, and transformer oil purification systems.

Advantages of Bleaching Earth

High adsorption capacity: Rapidly captures polar contaminants and color compounds from complex mixtures.
Thermally and chemically activated: Enhanced surface activity for higher efficiency at lower dosages.
Low residual loss: Minimizes oil retention and filtration losses in refining systems.
Consistent quality: Sourced from controlled deposits and processed for uniform activity and particle size.

Example Application

A vegetable oil refiner used activated bleaching earth during the purification of canola and sunflower oil to remove color bodies and trace metals. Switching to a higher-activity clay reduced the required dosage by 20% and cut oil retention losses by over 10%, resulting in a lighter final product and lower filtration waste.