Anaerobic oxidation of aromatic hydrocarbon

Conference · Mon Jan 01 04:00:00 EST 1990 · American Chemical Society, Division of Environmental Chemistry, Preprints; (USA)

OSTI ID:6534329

Lonergan, D J; Lovley, D R ^[1]

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1. Geological Survey, Reston, VA (USA)

Aromatic hydrocarbons are one of the most prevalent organic contaminants of groundwater. The first microorganism known to oxidize an aromatic hydrocarbon under anaerobic conditions was recently isolated. This organism, which has the strain designation GS-15, was found to oxidize toluene with the reduction of Fe(III). In the study reported here, this metabolism was studied in detail. Studies with ring-labeled ({sup 14}C)-toluene demonstrated that the ring-carbons were oxidized to carbon dioxide. Toluene oxidation was a strictly anaerobic process as evidenced by toluene oxidation in a sulfide-containing anaerobic medium. There was no toluene oxidation in the absence of GS-15 or Fe(III). No organic intermediates were detected during toluene oxidation. The transient accumulation of p-hydroxybenzoate during phenol metabolism further suggested that, in this organism, the anaerobic oxidation of aromatic contaminants proceeds through an aromatic carboxylic acid.

• OSTI ID: 6534329
• Report Number(s): CONF-900402--
• Conference Information: Journal Name: American Chemical Society, Division of Environmental Chemistry, Preprints; (USA) Journal Volume: 30:1
• Country of Publication: United States
• Language: English

Related Subjects

54 ENVIRONMENTAL SCIENCES
540320* -- Environment
Aquatic-- Chemicals Monitoring & Transport-- (1990-)
ANAEROBIC DIGESTION
AROMATICS
BIOCONVERSION
CHEMICAL REACTIONS
DATA ANALYSIS
DIGESTION
DOCUMENT TYPES
HYDROCARBONS
MANAGEMENT
MEASURING INSTRUMENTS
MEASURING METHODS
ORGANIC COMPOUNDS
OXIDATION
PROCEEDINGS
PROCESSING
WASTE MANAGEMENT
WASTE PROCESSING