Mass spectrometric monitoring of the degradation and elimination efficiency for hardly eliminable and hardly biodegradable polar compounds by membrane bioreactors

Wastewaters containing or spiked with polar compounds--alkylphenolethoxylates (APEOs) and drugs--were treated in membrane-assisted and conventional biological pilot plants to eliminate these pollutants. Elimination resulting in metabolization or ultimate degradation was pursued by substance-specific...

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Bibliographic Details
Published in:Water science and technology 2002-01, Vol.46 (3), p.57-64
Main Author: Schroeder, HFr
Format: Article
Language:English
Subjects:
Activated sludge
Activated Sludge Process
Alkylphenols
Applied sciences
Bezafibrate
Biocoenosis
Biodegradability
Biodegradation
Biodegradation, Environmental
Biological and medical sciences
Biological effects
Biological treatment of waters
Bioreactors
Biotechnology
Chains
Degradation
Detection
Environment and pollution
Environmental Monitoring - methods
Exact sciences and technology
Fenofibrate
Filtration
Fundamental and applied biological sciences. Psychology
General purification processes
Industrial applications and implications. Economical aspects
Ionization
Ions
Lipid Metabolism
Lipids
Mass
Mass Spectrometry
Membranes, Artificial
Microfiltration
Pharmaceutical Preparations - metabolism
Phenols - metabolism
Plants (botany)
Pollutants
Pollution
Polyethylene Glycols - metabolism
Sludge
Spectrometry
Waste Disposal, Fluid
Wastewaters
Water treatment and pollution
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Description
Summary:Wastewaters containing or spiked with polar compounds--alkylphenolethoxylates (APEOs) and drugs--were treated in membrane-assisted and conventional biological pilot plants to eliminate these pollutants. Elimination resulting in metabolization or ultimate degradation was pursued by substance-specific analysis applying atmospheric pressure chemical ionization (APCI) in combination with mass and tandem mass spectrometric detection (MS and MS-MS) either in the flow injection (FIA) or liquid chromatographic separation (LC) mode. APEOs were diminished by successive cleavage of polyether chain links resulting in short chain APEOs or alkylphenols (AP), if the biocoenosis was adapted to the compounds. Lipid regulating agents (LRA) were either eliminated completely (etofibrate), metabolized to fenofibratic acid (fenofibrate) or diminished to a minimal extent (bezafibrate). Compared to the membrane microfiltration process the conventional activated sludge process was less successful in both APEO and LRA elimination.
ISSN:0273-1223
1996-9732
DOI:10.2166/wst.2002.0054