Authors: Cornelissen, G.; Krusa, M.E.; Breedveld, G.D.; Eek, E.; Oen, A.M.P.; Arp, H.P.H.; Raymond, C.; Samuelsson, G.; Hedman, J.E.; Stokland, O.; Gunnarsson, J.S.
Reference: Cornelissen, G.; Krusa, M.E.; Breedveld, G.D.; Eek, E.; Oen, A.M.P.; Arp, H.P.H.; Raymond, C.; Samuelsson, G.; Hedman, J.E.; Stokland, O.; Gunnarsson, J.S. (2011) Remediation of Contaminated Marine Sediments Using Thin-Layer Capping with Activated Carbon
Summary: Thin-layer caps of activated carbon (AC) mixed with clay, AC alone, and AC with a sand covering were domonstrated in Norway as a remediation strategy for PAH contaminated marine sediment. The site was in 4-6 m depth water that had a tidal amplitude of 1-2 m with currents of up to 20 cm/sec. The AC slurries were made denser than surrounding water by soaking in a 10% w/w NaCl solution, and was applied using a flexible manually opperated hose. Application rates were 20 L/min. AC mixed with clay worked best for reducing contaminant flux and minimizing effects to benthic communities. Costs of AC material was about $10/m^2 and placement costs were on the same order-of-magnitude.
What You Will Find Here: Field experiment p. 6111, Results on carbon application p. 6112, Results on reduced PAH concentrations and flux p. 6113, Effects on benthic community p. 6114