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Reactive Fe/Pd Bimetallic Systems-Impregnated Adsorptive Activated Carbon For The Environmental Risk Management Of Contaminated Sites
Citation:
Choi, H., S. AGARWAL, D. D. DIONYSIOU, AND S. R. AL-ABED. Reactive Fe/Pd Bimetallic Systems-Impregnated Adsorptive Activated Carbon For The Environmental Risk Management Of Contaminated Sites. Presented at 235th American Chemical Society Meeting, New Orleans, LA, April 06 - 10, 2008.
Impact/Purpose:
To discuss the preparation and characterization of GAC/Fe/Pd composites, nanoscaling of Fe and Pd particles, and adsorption and dechlorination of PCBs.
Description:
Remediation of sediments and groundwater contaminated with hydrophobic organic chemicals such as polychlorinated biphenyls (PCBs) and polycyclic aromatic hydrocarbons remains a scientific and technical challenge. In order to overcome the short-comings of remediation strategies for such contaminated sites, our effort is geared towards the development of reactive iron/palladium (Fe/Pd)-impregnated adsorptive granular activated carbon (GAC). Preliminary results showed that the electrochemical dechlorination of the PCBs by Fe/Pd bimetal and the physical adsorption and sequestration of PCBs and their reaction intermediates by GAC could be simultaneously achieved. In this presentation, we will discuss the novel preparation and characterization of GAC/Fe/Pd composites, nanoscaling of Fe and Pd particles, and adsorption and dechlorination of PCBs. The GAC/ZVI/Pd nanocomposite might be used as an effective in-situ reactive capping barrier material for the environmental risk management of contaminated sediment and groundwater.