Anaerobic microbial dissolution of lead and production of organic acids
Patent
·
OSTI ID:866652
- Middle Island, NY
- Wading River, NY
- Coimbatore Tamil Nadu, IN
- Cambridge, MD
The present invention relates 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 rate 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 ml.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. Clostridium sp. ATCC No. 53464 can be used in the recovery of 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.
- Research Organization:
- ASSOC UNIVERSITIES INC
- DOE Contract Number:
- AC02-76CH00016
- Assignee:
- United States of America as represented by United States (Washington, DC)
- Patent Number(s):
- US 4758345
- OSTI ID:
- 866652
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
-1
/210/435/
042
32
40
53464
acetic
acid
acidity
acids
aerobic conditions
anaerobic
anaerobic bacteria
anaerobic conditions
anaerobic microbial
atcc
bacteria
bacterial
bacterial culture
butyric
clostridium
clostridium sp
coal
commercial
complexed
conditions
containing
culture
culture medium
dissolution
due
dumped
environment
form
growth
industrial
industrial waste
isolate
lactic
lactic acid
lead
lead oxide
logarithmic
major
medium
medium containing
metabolites
metals
method
microbial
ml
moles
ores
organic
organic acid
organic acids
oxide
process
production
purposes
quantities
rate
recovery
relates
removing
solubilizes
sp
stable
stable form
strategic
wastes
yields
/210/435/
042
32
40
53464
acetic
acid
acidity
acids
aerobic conditions
anaerobic
anaerobic bacteria
anaerobic conditions
anaerobic microbial
atcc
bacteria
bacterial
bacterial culture
butyric
clostridium
clostridium sp
coal
commercial
complexed
conditions
containing
culture
culture medium
dissolution
due
dumped
environment
form
growth
industrial
industrial waste
isolate
lactic
lactic acid
lead
lead oxide
logarithmic
major
medium
medium containing
metabolites
metals
method
microbial
ml
moles
ores
organic
organic acid
organic acids
oxide
process
production
purposes
quantities
rate
recovery
relates
removing
solubilizes
sp
stable
stable form
strategic
wastes
yields