Aerobic biotransformation of 4-fluorocinnamic acid to 4-fluorobenzoic acid

The biotransformation of 4-fluorocinnamic acid (FCA) using non-acclimated industrial activated sludge was investigated. FCA is a common intermediate in organic synthesis, and it is often present in aqueous waste streams. Hence, the biotransformation reactions this compound undergoes when exposed to...

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Bibliographic Details
Published in:Biodegradation (Dordrecht) 2001, Vol.12 (1), p.23-29
Main Authors: FREITAS DOS SANTOS, Luisa M, SPICQ, Arnaud, NEW, Anthony P, BIUNDO, Giuseppe Lo, WOLFF, Jean-Claude, EDWARDS, Andrew
Format: Article
Language:English
Subjects:
Acids
Activated sludge
Aerobiosis
Benzoates - metabolism
Biodegradation, Environmental
Biological and medical sciences
Biological treatment of waters
Biological wastewater treatment
Biotechnology
Biotransformation
Chromatography, High Pressure Liquid
Cinnamates - metabolism
Degradation products
Environment and pollution
Fundamental and applied biological sciences. Psychology
Gas Chromatography-Mass Spectrometry
Industrial applications and implications. Economical aspects
Industrial Waste
Magnetic Resonance Spectroscopy
Models, Chemical
p-Fluorobenzoic acid
p-Fluorocinnamic acid
Sewage - microbiology
Waste Disposal, Fluid
Waste streams
Wastewater treatment plants
Water Pollutants, Chemical - metabolism
Water treatment
Water treatment plants
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Summary:The biotransformation of 4-fluorocinnamic acid (FCA) using non-acclimated industrial activated sludge was investigated. FCA is a common intermediate in organic synthesis, and it is often present in aqueous waste streams. Hence, the biotransformation reactions this compound undergoes when exposed to activated sludge micro-organisms should be understood before waste streams are sent to biological wastewater treatment plants (WWTPs). FCA biotransformation was monitored using a wide range of analytical techniques. These techniques were used to monitor not only FCA disappearance, but also the formation of degradation products, in order to propose the metabolic pathway. FCA was biotransformed to 4-fluorobenzoic acid via the formation of 4-fluoroacetophenone. The removal of FCA up to 200 mg L(-1) followed first order kinetics. The half-lives for removal of FCA from the test solutions supplied with 200 mg L(-1), 100 mg L(-1), and 50 mg L(-1) were 53, 18, and 5 hours respectively.
ISSN:0923-9820
1572-9729
DOI:10.1023/A:1011973824171