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Decolourisation with Activated Carbon

CPL Carbon Link manufactures a range of granular activated carbon (GAC) and powdered activated carbon (PAC) products for decolorisation applications. Via optimal product selection, effective removal of colour bodies can be achieved, as well as maximum removal of used adsorbent during subsequent mechanical filtration. 

Discoloured liquid is either passed continuously through columns containing granular activated carbon, using a high residence time, or powdered activated carbon is added to a batch of the liquid, which after a period of mechanical agitation can then be filtered out of the purified liquid. It is during these stages that the colour bodies are physically adsorbed by the highly porous activated carbon media. 

This technique is used in a number of diverse applications such as food and pharmaceutical processing, chemical intermediates manufacturing and soft drink/beverage production. 


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