| Main Title |
Microcosm and In situ Field Studies of Enhanced Biotransformation of Trichloroethylene by Phenol-Utilizing Microorganisms. |
| Author |
Hopkins, G. D. ;
Semprini, L. ;
McCarty, P. L. ;
|
| CORP Author |
Stanford Univ., CA. Dept. of Civil Engineering. ;Oregon State Univ., Corvallis. Dept. of Civil Engineering.;Robert S. Kerr Environmental Research Lab., Ada, OK.;Department of Energy, Washington, DC. |
| Publisher |
c1993 |
| Year Published |
1993 |
| Report Number |
EPA-R-815738; EPA/600/J-93/295; |
| Stock Number |
PB93-222867 |
| Additional Subjects |
Microorganisms ;
Water pollution control ;
Biodegradation ;
Ground water ;
Aquifers ;
Chlorinated aliphatic hydrocarbons ;
In-situ processing ;
Aerobic conditions ;
Enzymes ;
Phenol ;
Reprints ;
Ethylene/trichloro ;
Ethylene/dichloro ;
Microcosms ;
Bioremediation ;
Biotransformation
|
| Holdings |
| Library |
Call Number |
Additional Info |
Location |
Last
Modified |
Checkout
Status |
| NTIS |
PB93-222867 |
Some EPA libraries have a fiche copy filed under the call number shown. |
|
07/26/2022 |
|
| Collation |
10p |
| Abstract |
The ability of different aerobic groundwater microorganisms to cometabolically degrade trichloroethylene (TCE), 1,2-cis-dichloroethylene (c-DCE), and 1,2-trans-dichloroethylene (t-DCE) was evaluated both in groundwater-fed microcosms and in situ in a shallow aquifer. Microcosms amended with phenol or toluene were equally effective in removing c-DCE (>90%) followed by TCE (60 to 70%), while the microcosm fed methane was most effective in removing t-DCE (>90%). At the Moffett Field groundwater test site, in situ removal of c-DCE and TCE coincided with biostimulation through phenol and oxygen injection and utilization, with c-DCE removed more rapidly than TCE. Greater TCE and c-DCE removal was observed when the phenol concentration was increased. Over 90% removal of c-DCE and TCE was observed in the 2-m biostimulated zone. This compares with 40 to 50% removal of c-DCE and 15 to 25% removal of TCE achieved by methane-grown microorganisms previously evaluated in an adjacent in situ test zone. (Copyright (c) 1993, American Society for Microbiology.) |
| Supplementary Notes |
Pub. in Applied and Environmental Microbiology, v59 n7 p2277-2285 Jul 93. Prepared in cooperation with Oregon State Univ., Corvallis. Dept. of Civil Engineering. Sponsored by Robert S. Kerr Environmental Research Lab., Ada, OK., and Department of Energy, Washington, DC. |
| NTIS Title Notes |
Journal article. |
| Title Annotations |
Reprint: Microcosm and In situ Field Studies of Enhanced Biotransformation of Trichloroethylene by Phenol-Utilizing Microorganisms. |
| Category Codes |
57K; 57B; 68D |
| NTIS Prices |
PC A02/MF A01 |
| Primary Description |
600/15 |
| Document Type |
NT |
| Cataloging Source |
NTIS/MT |
| Control Number |
328020056 |
| Origin |
NTIS |
| Type |
CAT |
