Glycerine Purification

Activated Carbon for Sugar and Syrup Decolorization

Where adsorption science meets crystallization economics.

Sugar and syrup decolorization is a delicate balance. A syrup containing excess color bodies, colloids, or inversion products will not crystallize properly, reducing yield and forcing costly reprocessing.

The carbon used must remove these impurities without altering the sucrose chemistry. Even slightly acidic carbon can trigger hydrolysis, creating invert sugars that prevent crystal formation. Therefore, the margin for pH and ash control is extraordinarily tight.

The Challenge & PureStar Approach

The Core Challenge: Large-molecule adsorption without chemical interference.

Color bodies in cane and beet syrup are large, complex molecules. They require mesopore-dominant carbon, rather than the micropore-optimized grades typically used for small trace contaminants.

However, many decolorization carbons sacrifice stability for surface area, becoming overly acidic or carrying ash residues that disturb the delicate pH balance of the syrup.