Main Title |
Prediction of Substrate Removal Rates of Attached Microorganisms and of Relative Contributions of Attached and Suspended Communities at Field Sites. |
Author |
Lewis, D. L. ;
Gattie, D. K. ;
|
CORP Author |
Environmental Research Lab., Athens, GA. ;Technology Applications, Inc., Athens, GA. |
Year Published |
1988 |
Report Number |
EPA/600/J-88/034; |
Stock Number |
PB88-224928 |
Additional Subjects |
Water pollution ;
Aquatic microbiology ;
Water flow ;
Biodeterioration ;
Adsorption ;
Mathematical models ;
Chlorine organic compounds ;
Depth ;
Field tests ;
Reprints ;
Aquatic ecosystems ;
Pesticide removal ;
D 2-4 herbicide ;
Acetic acid/dichlorophenoxy(methyl ester) ;
Acetic acid/dichlorophenoxy(butoxyethyl ester) ;
Environmental transport
|
Holdings |
Library |
Call Number |
Additional Info |
Location |
Last Modified |
Checkout Status |
NTIS |
PB88-224928 |
Some EPA libraries have a fiche copy filed under the call number shown. |
|
07/26/2022 |
|
Collation |
9p |
Abstract |
A mathematical model composed of a direct proportionality relationship between bulk water velocities and field-determined second-order microbial transformation rate coefficients, and the relative rate coefficient of a benchmark chemical, was developed for estimating the substrate removal rates of rapidly degraded chemicals by attached microorganisms in shallow (less than 1 m deep) aquatic ecosystems. Data from 31 field experiments involving the addition of 2,4-dichlorophenoxyacetic acid methyl ester (2,4-DME) in nine field areas were used to determine a field-derived second-order rate coefficient for microbial transformation of the ester. By using 2,4-DME as a benchmark chemical, the model was used to predict microbial transformation rates of the butoxyethyl ester of 2,4-dichlorophenoxyacetic acid (2,4-DBE) at five other field sites. The predicted half-lives of 2,4- DBE varied 1500-fold and were within about a 3-fold range or less of the measured half-lives. |
Supplementary Notes |
Pub. in Applied and Environmental Microbiology, v54 n2 p434-440 Feb 88. Prepared in cooperation with Technology Applications, Inc., Athens, GA. |
NTIS Title Notes |
Journal article. |
Title Annotations |
Reprint: Prediction of Substrate Removal Rates of Attached Microorganisms and of Relative Contributions of Attached and Suspended Communities at Field Sites. |
PUB Date Free Form |
Feb 88 |
Category Codes |
68E; 68D; 57H; 48G |
NTIS Prices |
PC A02/MF A01 |
Primary Description |
600/01 |
Document Type |
NT |
Cataloging Source |
NTIS/MT |
Control Number |
826017982 |
Origin |
NTIS |
Type |
CAT |