Assessment of continuous biodegradation of commercial PCB formulations

Journal Article · Sun Aug 01 04:00:00 EDT 1982 · Bull. Environ. Contam. Toxicol.; (United States)

DOI:https://doi.org/10.1007/BF01606151· OSTI ID:5532898

Liu, D

The paper documents a bench scale test demonstrating that substrate availability in the growth medium can significantly effect the biodegradation pattern of commercially formulated PCBs. Under limited substrate supply, all seven major components of Aroclor 1221 were degraded by Pseudomonas sp. 7509. With excessive amounts of nutrient, however, some preferences for given components were observed. The position of chlorine substitution on the biphenyl molecule appears to be one of the major factors determining an isomer's biodegradability. The biodegradation rate of higher chlorinated PCB formulations was much slower under the continuous loading. However, significant degradation of such formulations did occur, when the fermentor was switched to batch operation. (JMT)

• Research Organization: National Water Research Inst., Burlington, Ontario, Canada
• OSTI ID: 5532898
• Journal Information: Bull. Environ. Contam. Toxicol.; (United States), Journal Name: Bull. Environ. Contam. Toxicol.; (United States) Vol. 29:2; ISSN BECTA
• Country of Publication: United States
• Language: English

Related Subjects

560302* -- Chemicals Metabolism & Toxicology-- Microorganisms-- (-1987)
63 RADIATION, THERMAL, AND OTHER ENVIRON. POLLUTANT EFFECTS ON LIVING ORGS. AND BIOL. MAT.
AROMATICS
BACTERIA
BATCH CULTURE
BIOCONVERSION
BIODEGRADATION
CHEMICAL REACTIONS
CHLORINATED AROMATIC HYDROCARBONS
DECOMPOSITION
FERMENTATION
HALOGENATED AROMATIC HYDROCARBONS
MICROORGANISMS
MOLECULAR STRUCTURE
ORGANIC CHLORINE COMPOUNDS
ORGANIC COMPOUNDS
ORGANIC HALOGEN COMPOUNDS
PSEUDOMONAS