Niche adjustment for bioaugmentation with Pseudomonas sp. strain KC
Conference
·
OSTI ID:474239
- Michigan State Univ., East Lansing, MI (United States)
- Michigan State Univ., Noblesville, IN (United States)
- Golder Associates, Inc., East Lansing, MI (United States)
To be effective, novel organisms introduced into the environment must be able to survive and compete with indigenous organisms. However, to minimize the possibility of ecological disturbance, colonization should ideally be constrained. A possible solution is to create a temporary niche for the introduced organism. Alkalinity addition creates just such a niche by reducing the bioavailability of essential trace metals, such as iron, thereby favoring organisms with efficient trace metal scavenging systems. The authors evaluated alkaline pH adjustment with Pseudomonas sp. strain KC, a denitrifying aquifer organism that degrades carbon tetrachloride (CT) under denitrifying conditions. They compared the kinetic parameters of strain KC with those of its potential competitors (other denitrifiers) in groundwater from a CT-contaminated aquifer at Schoolcraft, Michigan. Under moderately alkaline conditions, strain KC had a higher maximum specific growth rate and yield. With alkaline adjustment, strain KC grew and degraded CT in columns containing aquifer solids from the Schoolcraft site and in slurries of aquifer material from Hanford, Washington. Upon reducing pH, a rapid decline in the KC population followed.
- Sponsoring Organization:
- Michigan State Government, Lansing, MI (United States); Environmental Protection Agency, Washington, DC (United States)
- OSTI ID:
- 474239
- Report Number(s):
- CONF-950483--; ISBN 1-57477-004-7
- Country of Publication:
- United States
- Language:
- English
Similar Records
An evaluation of aquifer bioaugmentation with Pseudomonas sp strain KC to remediate carbon tetrachloride
Monitoring and control of pseudomonas sp. strain KC for in-situ bioaugmentation of carbon tetrachloride contaminated sites
Pilot-scale evaluation of bioaugmentation for in-situ remediation of a carbon tetrachloride-contaminated aquifer
Conference
·
Thu Mar 31 23:00:00 EST 1994
· Geological Society of America, Abstracts with Programs; (United States)
·
OSTI ID:6951821
Monitoring and control of pseudomonas sp. strain KC for in-situ bioaugmentation of carbon tetrachloride contaminated sites
Conference
·
Sun Oct 01 00:00:00 EDT 1995
·
OSTI ID:111533
Pilot-scale evaluation of bioaugmentation for in-situ remediation of a carbon tetrachloride-contaminated aquifer
Journal Article
·
Sat Nov 14 23:00:00 EST 1998
· Environmental Science and Technology
·
OSTI ID:302254