Sediment Remediation

In situ treatment of contaminated sediments using activated carbon reduces the ecological and human health risks posed by contaminants.

Sediment Remediation

We have developed two lignite coal-based activated carbon grades specifically for removing polychlorinated biphenyls (PCBs), polycyclic aromatic hydrocarbons (PAHs), dioxin and furan from contaminated sediments. The successful use of activated carbon for in situ sediment treatment via contaminant sequestration and immobilization or the incorporation of activated carbon in reactive caps has been studied and demonstrated at dozens of sites worldwide. In situ sediment treatment via contaminant sequestration involves applying activated carbon amendments onto the surface of sediments or mixed with sand caps.

NORIT® SedimentPure™ powdered activated carbon (PAC) and granular activated carbon (GAC) have optimal pore size distributions proven to be highly effective for the removal of PCBs, PAHs, dioxin and furan in the presence of natural organic matter (NOM) concentrations typical in sediment pore water. This broad pore size distribution is critical for high performance, as NOM can partially or completely block the adsorptive capacity of microporous carbons, such as coconut-based activated carbon.