| Main Title |
Alternative Nonlinear Model for Estimating Second-Order Rate Coefficients for Biodegradation. |
| Author |
Suflita, J. M. ;
Smolenski, W. J. ;
Robinson, J. A. ;
|
| CORP Author |
Oklahoma Univ., Norman. Dept. of Botany and Microbiology. ;Upjohn Co., Kalamazoo, MI.;Robert S. Kerr Environmental Research Lab., Ada, OK. |
| Year Published |
1987 |
| Report Number |
EPA-R-811146 ;EPA-R-812808; EPA/600/J-87/132; |
| Stock Number |
PB88-149117 |
| Additional Subjects |
Biodeterioration ;
Cresols ;
Anaerobic conditions ;
Sludge ;
Mathematical models ;
Substrates ;
Nonlinear programming ;
Reprints ;
|
| Holdings |
| Library |
Call Number |
Additional Info |
Location |
Last
Modified |
Checkout
Status |
| NTIS |
PB88-149117 |
Some EPA libraries have a fiche copy filed under the call number shown. |
|
07/26/2022 |
|
| Collation |
7p |
| Abstract |
A modification of the second-order model for biodegradation was derived, applied to an example data set and shown to be superior for describing the anaerobic biodegradation of p-cresol by an enriched bacterial consortium. The modified model circumvents the no-growth assumption implicit in the use of the second-order rate equation, but still requires the assumption of first-order kinetics over the course of substrate depletion. Violation of the no-growth assumption is particularly important since overestimates of the pseudo-first-order rate coefficient lead to underestimates of the time required for the removal of a xenobiotic chemical from a contaminated environment. Calculations show that the errors introduced into the pseudo-first-order rate coefficient (and the resulting estimates of the second-order rate coefficient) approach 100% if one doubling occurs in activity over the course of substrate depletion. (Copyright (c) 1987, American Society for Microbiology.) |
