Main Title |
Cell Density and Non-Equilibrium Sorption Effects on Bacterial Dispersal in Groundwater Microcosms. |
Author |
Lindqvist, R. ;
Enfield, C. G. ;
|
CORP Author |
Rice Univ., Houston, TX. Dept. of Environmental Science and Engineering. ;Lund Univ. (Sweden).;Robert S. Kerr Environmental Research Lab., Ada, OK. |
Publisher |
c1992 |
Year Published |
1992 |
Report Number |
EPA-R-812808; EPA/600/J-92/451; |
Stock Number |
PB93-141505 |
Additional Subjects |
Aquatic microbiology ;
Ground water ;
Aquatic ecosystems ;
Bacteria ;
Soils ;
Sands ;
Bacillus ;
Pseudomonas ;
Enterobacter ;
Microbial colony count ;
Reprints ;
|
Holdings |
Library |
Call Number |
Additional Info |
Location |
Last Modified |
Checkout Status |
NTIS |
PB93-141505 |
Some EPA libraries have a fiche copy filed under the call number shown. |
|
07/26/2022 |
|
Collation |
20p |
Abstract |
The relative importance of dispersion, physical straining, nonequilibrium sorption, and cell density on the dispersal of bacteria was examined in saturated, flow-dynamic sand columns. The bacterial breakthrough as a result of different size distributions of sand particles was followed by measuring the effluent concentration of (3)H-adenosine-labelled cells of a Bacillus sp. and an Enterobacter sp. strain suspended in ground-water. The breakthrough curves were compared with theoretical curves predicted from an advective-dispersive equilibrium sorption model (ADS), an ADS model with a first order sink term for irreversible cell reactions, a two-site model (equilibrium and nonequilibrium sorption sites), and a filtration model. Bacterial sand:water isotherms were linear in the experimental concentration range but had positive intercepts. The partition coefficients ranged from 15 to 0.4 for the Bacillus sp., and 120 to 0.4 for a Pseudomonas sp., and decreased with increasing particle size of the dominant fraction. In a kinetic study, the partition coefficient for the Enterobacter sp. in the smaller particle sand was 63 after one hour, but had decreased to 9 after 19 hours. (Copyright (c) Springer-Verlag New York Inc. 1992.) |
Supplementary Notes |
Pub. in Microbial Ecology, v24 p25-42 Nov 92. Prepared in cooperation with Lund Univ. (Sweden). Sponsored by Robert S. Kerr Environmental Research Lab., Ada, OK. |
NTIS Title Notes |
Journal article. |
Title Annotations |
Reprint: Cell Density and Non-Equilibrium Sorption Effects on Bacterial Dispersal in Groundwater Microcosms. |
Category Codes |
57K; 68D |
NTIS Prices |
PC A03/MF A01 |
Primary Description |
600/15 |
Document Type |
NT |
Cataloging Source |
NTIS/MT |
Control Number |
307031574 |
Origin |
NTIS |
Type |
CAT |