Anaerobic microbial dissolution of lead and production of organic acids
The present invention related to an anaerobic bacterial culture of Clostridium sp. ATCC No. 53464 which solubilizes lead oxide under anaerobic conditions in coal and industrial wastes and therefore presents a method of removing lead from such wastes before they are dumped into the environment. The rat of lead dissolution during logarithmic growth of the bacteria in 40 ml medium containing 3.32 ..mu..moles of lead as lead oxide was 0.042 ..mu..moles m1/sup /-/1/ hr/sup /-/1/. Dissolution of lead oxide by the bacterial isolate is due to the production of metabolites and acidity in the culture medium. The major metabolites are acetic, butyric and lactic acid. The major metabolites are acetic, butyric and lactic acid. Clostridium sp. ATCC No. 53464 can be used in the recovery of the strategic metals from ores and wastes and also for the production of lactic acid for commercial purposes. The process yields large quantities of lactic acid as well as lead complexed in a stable form with said acids. 4 figs., 3 tabs.
- Research Organization:
- Brookhaven National Laboratory (BNL), Upton, NY (United States)
- DOE Contract Number:
- AC02-76CH00016
- Assignee:
- TIC; EDB-88-177944
- Patent Number(s):
- PATENTS-US-A6039131
- OSTI ID:
- 7048277
- Resource Relation:
- Other Information: Portions of this document are illegible in microfiche products
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
59 BASIC BIOLOGICAL SCIENCES
INDUSTRIAL WASTES
ANAEROBIC DIGESTION
LEAD OXIDES
BIODEGRADATION
BIOLOGICAL ACCUMULATION
CHEMICAL REACTION YIELD
CLOSTRIDIUM
CULTURE MEDIA
INVENTIONS
RECOVERY
BACTERIA
BIOCONVERSION
CHALCOGENIDES
CHEMICAL REACTIONS
DECOMPOSITION
DIGESTION
LEAD COMPOUNDS
MANAGEMENT
MICROORGANISMS
OXIDES
OXYGEN COMPOUNDS
PROCESSING
WASTE MANAGEMENT
WASTE PROCESSING
WASTES
YIELDS
320305* - Energy Conservation
Consumption
& Utilization- Industrial & Agricultural Processes- Industrial Waste Management
550700 - Microbiology
550500 - Metabolism