Methylene blue value (MBV) is commonly used as a performance indicator for activated carbons in liquid phase adsorption applications, measuring the ability of the activated carbon to adsorb the specific dye methylene blue. MBV allows comparison of the adsorption capacity and decolourisation ability of different activated carbons, particularly in the removal of organic compounds and colours from water and other liquids.
Types of activated carbon that typically require a methylene blue value include:
Powdered Activated Carbon (PAC)
PAC carbon includes both coal and wood powdered activated carbon and is suitable for water treatment applications, beverage & beverages industries, pharmaceutical industries etc. where rapid adsorption is required. Examples include sugar decolourisation, glycerine decolourisation etc.
Granular Activated Carbon (GAC)
GAC is used for drinking water purification and wastewater treatment, as well as for liquid purification applications such as the food and beverage industry or the pharmaceutical industry.