| Main Title |
Biodegradation of Cresol Isomers in Anoxic Aquifers. |
| Author |
Smolenski, W. J. ;
Suflita, J. M. ;
|
| CORP Author |
Oklahoma Univ., Norman. Dept. of Botany and Microbiology.;Robert S. Kerr Environmental Research Lab., Ada, OK. |
| Year Published |
1987 |
| Report Number |
EPA-R-811146 ;EPA-R-812808; EPA/600/J-87/131; |
| Stock Number |
PB88-149125 |
| Additional Subjects |
Biodeterioration ;
Cresols ;
Isomerization ;
Aquifers ;
Anaerobic conditions ;
Slurries ;
Substrates ;
Sands ;
Sludge ;
Ground water ;
Reprints ;
|
| Holdings |
| Library |
Call Number |
Additional Info |
Location |
Last
Modified |
Checkout
Status |
| NTIS |
PB88-149125 |
Some EPA libraries have a fiche copy filed under the call number shown. |
|
07/26/2022 |
|
| Collation |
10p |
| Abstract |
The biodegradation of 0-, m-, and p-cresol was examined in material obtained from a shallow anaerobic alluvial sand aquifer. The cresol isomers were preferentially metabolized, with p-cresol being the most easily degraded. m-Cresol was more persistent than the para-isomer, and o-cresol persisted for over 90 days. Biodegradation of cresol isomers was favored under sulfate-reducing conditions (SRC) compared with that under methanogenic conditions (MC). Slurries that were acclimated to p-cresol metabolism transformed the substrate at 18 and 330 nmol/h per g (dry weight) for MC and SRC, respectively. Inhibition of electron flow to sulfate reduction with 2.0 mM molybdate reduced p-cresol metabolism in incubations containing sulfate. When methanolgenesis was blocked with 5 mM bromoethanesulfonic acid in incubations lacking sulfate, p-cresol catabolism was retarded. Under SRC 3.4 mol of sulfate was consumed per mol of p-cresol metabolized. The addition of sulfate to methanogenic incubations stimulated p-cresol degradation. (Copyright (c) American Society for Microbiology.) |
| Supplementary Notes |
Pub. in Applied and Environmental Microbiology, v53 n4 p710-716 Apr 87. Sponsored by Robert S. Kerr Environmental Research Lab., Ada, OK. |
| NTIS Title Notes |
Journal article. |
| Title Annotations |
Reprint: Biodegradation of Cresol Isomers in Anoxic Aquifers. |
| PUB Date Free Form |
c1987 |
| Category Codes |
68C; 68D; 57K |
| NTIS Prices |
PC A02/MF A01 |
| Primary Description |
600/15 |
| Document Type |
NT |
| Cataloging Source |
NTIS/MT |
| Control Number |
808420561 |
| Origin |
NTIS |
| Type |
CAT |
