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Implementation Of Palladized Iron-Impregnated Reactive Activated Carbon (RAC) System For PCBs Cleanup: Effects Of PCB Loading, Reaction pH, And Co-Existing NOM And Ionic Species
Citation:
Choi, H. AND S. R. AL-ABED. Implementation Of Palladized Iron-Impregnated Reactive Activated Carbon (RAC) System For PCBs Cleanup: Effects Of PCB Loading, Reaction pH, And Co-Existing NOM And Ionic Species. Presented at 239th American Chemical Society Meeting, San Francisco, CA, March 20 - 26, 2010.
Impact/Purpose:
To discuss the practical reaction conditions relevant in natural systems, including PCB loading, reaction pH, and coexisting natural organic matter and ionic species, which greatly influence the trapping and treatment strategy of RAC system towards PCBs.
Description:
For the treatment of chlorinated organic compounds in the environment, such as polychlorinated biphenyls (PCBs), we have developed reactive activated carbon (RAC) impregnated with Fe/Pd bimetallic nanoparticles. The RAC system can couple adsorption of PCBs to activated carbon with their dechlorination on Fe/Pd. Subsequently, there has been a great advance in the RAC research for the remediation of PCBs-contaminated sites, including test on the ageing and longevity of RAC and its treatability towards various PCB congeners. However, most of the recent studies have not addressed the complexities of treating actual sites and rather neglected the potentially adverse impacts of co-existing species in the environment. In this presentaiton, we will discuss the practical reaction conditions relevant in natural systems, including PCB loading, reaction pH, and coexisting natural organic matter and ionic species, which greatly influence the trapping and treatment strategy of RAC system towards PCBs.