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Evaluation Of Sorption Materials For Use In Remediation Of Mercury-Contaminated Fresh Water Sediments
Citation:
RANDALL, P., R. Fimmen, AND V. Lal. Evaluation Of Sorption Materials For Use In Remediation Of Mercury-Contaminated Fresh Water Sediments. Presented at Battelle 2011 Sediments Conference, New Orleans, LA, February 02 - 07, 2011.
Impact/Purpose:
To characterize the extent of mercury methylation under condtions simulatingthose at a mercury contaminatned superfund site in southern Alabama, both during baseline (non-reactive capping) conditions and with the implementation of reactive capping materials.
Description:
The purpose of this project is to characterize the extent of mercury methylation under conditions simulating those at a mercury-contaminated superfund site in southern Alabama, both during baseline (non-reactive capping) conditions and with the implementaion of reactive capping materials. In order to evaluate the performance of each reactive capping material, a three-stage experimental study was developed. The adsorption of Hg and MeHg onto the five materials (bauxite, AquaBlok®, local soil, local dredged sediment, and Ottawa sand as a control) was evaluated in Stage 1 (Sorption Study). The ability fo two candidate capping materials (local soil and local dredge material) to inhibit the methylation of Hg relative to the quantity of MeHg produced during the incubation conditions was evaluated in Stage 2 (Incubation Study). The capacity of one candidate capping material (local soil) to inhibit translocation of Hg and MeHg with respect to ebullition-facilitated contaminants transport was evaluated in Stage 3 (Column Study). This poster will report the results of this study.