Main Title |
Impact of toxic organic chemicals on the kinetics of acetoclastic methanogenesis / |
Author |
Davies-Venn, Christian. ;
Young, J. C. ;
Tabak, H. H.
|
Other Authors |
|
CORP Author |
Arkansas Univ., Fayetteville. Dept. of Civil Engineering.;Environmental Protection Agency, Cincinnati, OH. Risk Reduction Engineering Lab. |
Publisher |
U.S. Environmental Protection Agency, Office of Research and Development, Risk Reduction Engineering Laboratory, |
Year Published |
1990 |
Report Number |
EPA/600/D-90/137; EPA-R-814488-01-3 |
Stock Number |
PB90-263203 |
Subjects |
Sewage--Purification--Biological treatment ;
Organic water pollutants ;
Methanobacteriaceae
|
Additional Subjects |
Biodeterioration ;
Reaction kinetics ;
Chlorine organic compounds ;
Biomass ;
Bacteria ;
Mathematical models ;
Molecular structure ;
Solid waste disposal ;
Toxic substances ;
Biogas process
|
Holdings |
Library |
Call Number |
Additional Info |
Location |
Last Modified |
Checkout Status |
NTIS |
PB90-263203 |
Some EPA libraries have a fiche copy filed under the call number shown. |
|
07/26/2022 |
|
Collation |
32 pages : illustrations ; 28 cm |
Abstract |
A knowledge of the effect of toxic organic chemicals on the biotransformation characteristics of organic co-substrates is essential for predicting the impact of these chemicals in anaerobic processes. Bench-scale tests were conducted to assess the impact of toxic organic chemicals on the kinetics of acetoclastic methanogenesis and to determine the relationship between kinetic parameters obtained under non-toxic and toxic conditions. A computer model based on a finite difference non-linear least squares algorithm was used to calculate the kinetic parameters by obtaining a best-fit of the experimental data to the Michaelis-Menten substrate utilization model. Resulting kinetic coefficients revealed significant changes in both the maximum rate of acetate conversion, and the half-velocity coefficient, when using both chlorophenols and chloroanilines. Therefore, mixed inhibition was occurring. However, non-competitive mechanisms predominated with chemicals containing the 2-chloro functional group while competitive mechanisms seemed to predominate with the 3- and 4-chloro functional groups. |
Notes |
"Henry H. Tabak, project officer." "Presented at the ACS Symposium on Chemical and Biochemical Detoxification of Hazardous Wastes II, Miami Beach, Florida on September 10-15, 1989." Includes bibliographical references. Microfiche. |
Contents Notes |
EPA/600/D-90/137. |
Place Published |
Cincinnati, OH : |
Supplementary Notes |
Presented at the ACS Environmental Chemistry Division Symposium on Chemical and Biochemical Detoxification of Hazardous Wastes II, Miami Beach, FL., September 10-15, 1989. Sponsored by Environmental Protection Agency, Cincinnati, OH. Risk Reduction Engineering Lab. |
Corporate Au Added Ent |
United States. Environmental Protection Agency. Office of Research and Development. ; Risk Reduction Engineering Laboratory. ; University of Arkansas. Department of Civil Engineering. |
PUB Date Free Form |
1990. |
NTIS Prices |
PC A03/MF A01 |
BIB Level |
m |
Cataloging Source |
OCLC/T |
OCLC Time Stamp |
20001218133614 |
Language |
eng |
Origin |
NTIS |
Type |
MERGE |
OCLC Rec Leader |
01568nam 2200337Ka 45020 |