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Basic Engineering Research for D&D of R Reactor Storage Pond Sludge: Electrokinetics, Carbon Dioxide Extraction, and Supercritical Water Oxidation.

DE2005832976

Publication Date	2001
Page Count	80
Abstract	Large quantities of mixed low level waste (MLLW) that fall under the Toxic Substances Control Act (TSCA) exist and will continue to be generated during D&D operations at DOE sites across the country. Currently, the volume of these wastes is 23,500 cu m, and the majority of these wastes (i.e., almost 19,000 cu m) consist of PCBs and PCB-contaminated materials. No proposed process for the recovery and/or destruction of these persistent pollutants has emerged as the preferred choice for DOE cleanup. Collaborating researchers at the University of South Carolina (USC), Clemson University (Clemson University), and the Savannah River Technology Center (SRTC), under the direction of the South Carolina Universities Research and Education Foundation (SCUREF), have performed initial research and development on a combined PCB extraction/destruction process for the PCB-contaminated solids that are generated during D&D activities. Extraction is performed using either supercritical carbon dioxide (CO2) or hot, pressurized water. Destruction is accomplished by oxidation in supercritical or near-critical water. Two key aspects of the proposed process are that it isolates and concentrates the PCBs from the solid matrices (thereby reducing waste volume greatly), and little if any secondary solvent or solid wastes are generated.
Keywords	Electrodynamics Savannah river plant PCB(Polychlorinated biphenyls) Solid wastes Toxic substances control act Carbon dioxide Education Matrices Ponds R Reactor Solvents Storage
Source Agency	Technical Information Center Oak Ridge Tennessee
Corporate Authors	Clemson Univ., SC. Dept. of Chemical Engineering.; South Carolina Univ., Columbia.; Department of Energy, Washington, DC.; Westinghouse Savannah River Co., Aiken, SC.; Savannah River Technology Center, Aiken, SC.
Supplemental Notes	Prepared in cooperation with South Carolina Univ., Columbia., Westinghouse Savannah River Co., Aiken, SC. and Savannah River Technology Center, Aiken, SC. Sponsored by Department of Energy, Washington, DC.
Document Type	Technical Report
NTIS Issue Number	200524

Basic Engineering Research for D&D of R Reactor Storage Pond Sludge: Electrokinetics, Carbon Dioxide Extraction, and Supercritical Water Oxidation.

Basic Engineering Research for D&D of R Reactor Storage Pond Sludge: Electrokinetics, Carbon Dioxide Extraction, and Supercritical Water Oxidation.
DE2005832976

Publication Date	2001
Page Count	80
Abstract	Large quantities of mixed low level waste (MLLW) that fall under the Toxic Substances Control Act (TSCA) exist and will continue to be generated during D&D operations at DOE sites across the country. Currently, the volume of these wastes is 23,500 cu m, and the majority of these wastes (i.e., almost 19,000 cu m) consist of PCBs and PCB-contaminated materials. No proposed process for the recovery and/or destruction of these persistent pollutants has emerged as the preferred choice for DOE cleanup. Collaborating researchers at the University of South Carolina (USC), Clemson University (Clemson University), and the Savannah River Technology Center (SRTC), under the direction of the South Carolina Universities Research and Education Foundation (SCUREF), have performed initial research and development on a combined PCB extraction/destruction process for the PCB-contaminated solids that are generated during D&D activities. Extraction is performed using either supercritical carbon dioxide (CO2) or hot, pressurized water. Destruction is accomplished by oxidation in supercritical or near-critical water. Two key aspects of the proposed process are that it isolates and concentrates the PCBs from the solid matrices (thereby reducing waste volume greatly), and little if any secondary solvent or solid wastes are generated.
Keywords	Electrodynamics Savannah river plant PCB(Polychlorinated biphenyls) Solid wastes Toxic substances control act Carbon dioxide Education Matrices Ponds R Reactor Solvents Storage
Source Agency	Technical Information Center Oak Ridge Tennessee
Corporate Authors	Clemson Univ., SC. Dept. of Chemical Engineering.; South Carolina Univ., Columbia.; Department of Energy, Washington, DC.; Westinghouse Savannah River Co., Aiken, SC.; Savannah River Technology Center, Aiken, SC.
Supplemental Notes	Prepared in cooperation with South Carolina Univ., Columbia., Westinghouse Savannah River Co., Aiken, SC. and Savannah River Technology Center, Aiken, SC. Sponsored by Department of Energy, Washington, DC.
Document Type	Technical Report
NTIS Issue Number	200524