Biotransformation of Trichloroethylene by a Phenol-Induced Mixed Culture

Biodegradation of trichloroethylene (TCE) was studied using a mixed culture of aerobic, phenol-induced organisms. Abiotic experiments showed that sorption of TCE to biomass was negligible in the systems studied. The effects of influent phenol and TCE concentration on the TCE degradation capacity of...

Full description

Saved in:

Bibliographic Details
Published in:	Journal of environmental engineering (New York, N.Y.) Vol. 122; no. 7; pp. 581 - 589
Main Authors:	Shurtliff, Mathew M, Parkin, Gene F, Weathers, Lenly J, Gibson, David T
Format:	Journal Article
Language:	English
Published:	Reston, VA American Society of Civil Engineers 01-07-1996
Subjects:	Applied sciences Biodegradation of pollutants Biological and medical sciences Biological and physicochemical phenomena Biotechnology Environment and pollution Exact sciences and technology Fundamental and applied biological sciences. Psychology Industrial applications and implications. Economical aspects Natural water pollution Pollution TECHNICAL PAPERS Water treatment and pollution Biodegradation Pollutant Concentration effect Bacteria Water pollution Kinetics Ethylene(trichloro)
Online Access:	Get full text
Tags:	Add Tag No Tags, Be the first to tag this record!

Description
Summary:	Biodegradation of trichloroethylene (TCE) was studied using a mixed culture of aerobic, phenol-induced organisms. Abiotic experiments showed that sorption of TCE to biomass was negligible in the systems studied. The effects of influent phenol and TCE concentration on the TCE degradation capacity of the culture were studied using chemostats. A relationship exists between the influent phenol TCE ratio and TCE biodegradation. TCE transformation yields ranged from 0.052 to 0.222 mg TCE removed mg phenol removed. Monod kinetic coefficients for phenol degradation were determined. Monod kinetic coefficients were also determined for TCE biotransformation by resting cells. The concept of transformation capacity was used to model the decrease in active biomass concentration caused by TCE transformation. In mineralization studies using 14 C-labeled TCE, 22% of the degraded mass of TCE was transformed to carbon dioxide, 8.8% was incorporated into biomass, 42% was transformed to nonvolatile products, with the remaining, unrecovered 27% most likely transformed into volatile or semivolatile products.
Bibliography:	ObjectType-Article-2 SourceType-Scholarly Journals-1 ObjectType-Feature-1 content type line 23
ISSN:	0733-9372 1943-7870
DOI:	10.1061/(ASCE)0733-9372(1996)122:7(581)