Why Powdered Activated Carbon Sometimes Causes Slow Filtration in Decolorization Processes – and How to Improve It

Powdered activated carbon is widely used for liquid decolorization, but some processes experience slow filtration after carbon treatment. This article explains the main reasons behind filtration problems, including particle size distribution, fine powder content, carbon dosage, solution properties, and filtration conditions, while offering practical ways to improve overall process efficiency.