The ChemChar process for hazardous-waste treatment
The ChemChar Reverse-Burn Gasification Process has been studied for application to the thermal destruction of radioactive waste organic ion exchange resins. The resulting char was mixed with cement to form a dry, leach-resistant final disposal product. Successful regeneration of spent granular activated carbons was achieved with reverse-burn gasification. Regeneration parameters such as moisture content and supplemental fuel addition were investigated. The performance of regenerated carbon was evaluated by batch equilibrium and breakthrough assay and was comparable to that of the original. Surface areas were determined by the BET method. The fate of mercury during reverse-burn gasification was investigated. TRB Char adsorbent was used to remove mercury vapor emission from the process. The use of petroleum coke as a substrate for gasification of wastes was studied. Petroleum coke was activated by reverse-burn gasification to produce a highly porous, low surface area solid. Destruction efficiency for hexachlorobenzene on activated coke was considerably lower than on coal char, however, the addition of iron appeared to catalyze hexachlorobenzene gasification.
- Research Organization:
- Missouri Univ., Columbia, MO (United States)
- OSTI ID:
- 5048144
- Resource Relation:
- Other Information: Thesis (Ph.D.)
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
ION EXCHANGE MATERIALS
MATERIALS RECOVERY
MERCURY
COKE
GASIFICATION
HAZARDOUS MATERIALS
RADIOACTIVE WASTE PROCESSING
SURFACE AREA
ELEMENTS
MANAGEMENT
MATERIALS
METALS
PROCESSING
RADIOACTIVE WASTE MANAGEMENT
SURFACE PROPERTIES
THERMOCHEMICAL PROCESSES
WASTE MANAGEMENT
WASTE PROCESSING
052001* - Nuclear Fuels- Waste Processing