Activated carbon that has been used for liquid or gas purification (spent activated carbon) is filled with the contaminants it has absorbed, and is therefore classified as hazardous waste that must be disposed of at a designated site or recycled (reactivated).
Reactivation is without doubt the best, most efficient and most cost-effective way to treat spent activated carbon. The reactivation process removes the contaminants and restores every parameter of the carbon to near virgin-grade levels, making it suitable for reuse. The spent activated carbon is heated to 1000⁰C to remove and destroy any contaminants it has absorbed and restore its absorbing ability. The entire process takes a few days, after which the carbon is returned to the customer, ready for reuse. The reactivation process can be adjusted to obtain certain specifications required by the customer.