Differences Between Powdered Activated Carbon and Granular Activated Carbon


Activated carbon comes in various forms, with powder and granules being the two most fundamental types. How do they differ in terms of application?


I. Powdered Activated Carbon (PAC)


Particle size: Typically less than 0.18 mm (80 mesh)


Characteristics: Good dispersibility, rapid adsorption rate, single-use


Applications: Emergency treatment for sudden water pollution, food decolorization, pharmaceutical purification


Usage: Added directly to the liquid; after thorough mixing, it is separated via filtration


II. Granular Activated Carbon (GAC)


Particle size: Typically between 0.2 mm and 5 mm


Characteristics: High strength, suitable for fixed-bed loading, capable of multiple regenerations


Applications: Continuous water treatment equipment, waste gas treatment units, solvent recovery systems


Usage: Loaded into adsorption towers or filter vessels, allowing liquid or gas to flow through the bed


The choice between powder and granules usually depends on the treatment scale, operating mode, and regeneration conditions.



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