Microbial recovery of metals from spent coal liquefaction catalysts. Quarterly report, October 1993--December 1993
The project objectives outlined in the previous reports involved defining conditions and cultures best suited to achieve the most effective metal release from spent coal liquefaction catalysts by microbial processes. The continuity of the research program was maintained during the period of principal investigator replacement. This transition period allowed the project data to be reviewed and research plans were formulated to gain new insights into the mechanisms involved in metals release. Various microbiological and physiochemical parameters which may be important in microbial release of metals from spent coal liquefaction catalysts continue to be investigated so that this technology can be optimized. Mo release from spent coal liquefaction catalysts has been shown to be dependent upon many parameters, but release is dominated by microbial growth. The microbial Mo release is a rapid process requiring less than one week for 90% of the releasable Mo to be solubilized from whole washed (THF) catalyst. It could be expected that the rates would be even greater with crushed catalyst. Efforts are now centering on optimizing the parameters that stimulate microbial growth and action.
- Research Organization:
- Geo-Microbial Technologies, Inc., Ochelata, OK (United States)
- Sponsoring Organization:
- USDOE, Washington, DC (United States)
- DOE Contract Number:
- AC22-92PC92119
- OSTI ID:
- 10143917
- Report Number(s):
- DOE/PC/92119-T3; ON: DE94010299; TRN: 94:004886
- Resource Relation:
- Other Information: PBD: [1993]
- Country of Publication:
- United States
- Language:
- English
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