The Use of Carbon Aerogel Electrodes for Environmental Cleanup.
Abstract
Carbon aerogel has a very high specific surface area, a relatively large pore size, and exceptionally low electrical resistivity. Such properties make this monolithic material idea for some electrode applications. An electrochemical cell with a stack of carbon aerogel electrodes has been constructed and used to remove a variety of contaminates from aqueous waste streams and natural waters. In the case of non-reducible and non-oxidizable salt solutions, the cell is operated in a capacitive mode. Electrolytic or electrophoretic deposition is used for the removal of heavy metals. It has been shown that capacitive deionization with carbon aerogel electrodes can be used to remove salts such as NaNO3 from water. It has also shown that electrolysis with carbon aerogel electrodes can be used to effectively remove a variety of metals from process streams and natural waters. The exceptional electrical conductivity carbon aerogel is due to its unique interconnected nanostructure and has made it possible to eliminate the need for metal substrates in more recent cell designs.
Document Details
- Document Type
- Technical Report
- Publication Date
- Jan 01, 1996
- Accession Number
- ADA349002
Entities
People
- A. M. Volpe
- D. V. Fix
- J. C. Farmer
- J. K. Nielsen
- R. W. Pekala
Organizations
- Lawrence Livermore National Laboratory