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U.S. Department of Energy
Office of Scientific and Technical Information

Regeneration of spent activated carbon

Technical Report ·
OSTI ID:7211576
According to this patent application, spent activated carbon is regenerated by contacting it with formaldehyde in an amount sufficient to restore its activation. Following the treatment the regenerated carbon is rinsed to remove residual formaldehyde and is then ready for use. When the activated carbon has lost its reductive and sorbant properties through use, i.e., when it has become 'spent,' it is replaced with fresh activated carbon. The spent carbon is then either discarded or regenerated. Discarding the spent carbon is wasteful and oftentimes harmful to the environment.
Research Organization:
Department of Agriculture, Washington, DC (USA)
OSTI ID:
7211576
Report Number(s):
PB-264616
Country of Publication:
United States
Language:
English