A central fission pathway in alkylphenol ethoxylate biodegradation

A representative alkylphenol Triton X-100 (having 9.5 oxyethylene subunits) was treated over 40 days under the conditions of the continuous flow activated sludge simulation test in a plant with aeration and denitrification chambers. Treated sewage was separated by sequential extraction with ethyl ac...

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Bibliographic Details
Published in:Water research (Oxford) 2003-03, Vol.37 (5), p.1005-1014
Main Authors: Franska, Magdalena, Franski, Rafal, Szymanski, Andrzej, Lukaszewski, Zenon
Format: Article
Language:English
Subjects:
Activated Sludge Process
Alkyphenol ethoxylates
Biodegradation metabolites
Biodegradation, Environmental
Chromatography, High Pressure Liquid
HPLC-ESI-MS
Mass Spectrometry
Octoxynol - metabolism
Oxidation-Reduction
Poly(ethylene glycols)
Surface-Active Agents - metabolism
Water Purification - methods
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Summary:A representative alkylphenol Triton X-100 (having 9.5 oxyethylene subunits) was treated over 40 days under the conditions of the continuous flow activated sludge simulation test in a plant with aeration and denitrification chambers. Treated sewage was separated by sequential extraction with ethyl acetate and chloroform. The extracts were analysed by high-performance liquid chromatography-electrospray ionisation-mass spectrometry (HPLC-ESI-MS). Single ion chromatograms of the chloroform extracts showed the presence of neutral, mono- and di-carboxylated poly(ethylene glycols). This is evidence of the central fission of alkylphenol ethoxylates (APE). Simultaneously, the APE having ω-carboxylated oxyethylene chains were identified. This is the evidence that apart from central fission, the ω-oxidation oxyethylene chain pathway also occurs.
ISSN:0043-1354
1879-2448
DOI:10.1016/S0043-1354(02)00444-X