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Updated: Jun 12, 2026

Extraction of Structural Extracellular Polymeric Substances from Aerobic Granular Sludge
Published on: September 26, 2016
Activated sludge behaviour in a batch reactor in the presence of antibiotics: study of extracellular polymeric
A C Avella1, M Essendoubi, J N Louvet
1Laboratoire Environnement et Minéralurgie, Nancy-Université, LEM UMR CNRS INPL 7569, 15 avenue du Charmois, 54500 Vandoeuvre-les-Nancy, France. catalina.avella@ensg.inpl-nancy.fr
Abstract:
The influence of Erythromycin, Roxithromycin, Amoxicillin, Tetracycline and Sulfamethoxazole on municipal sludge in batch reactors was investigated. The study was focused on extracellular polymeric substances (EPS) as indicator of bacteria sensitivity to toxic agents. The EPS were analysed by UV-Vis and FT-IR spectroscopies and by size exclusion chromatography. It was found that Erythromycin and Roxithromycin induced a significant increase of bound EPS in flocs. This was attributed to a protection mechanism of the bacteria. Erythromycin was the only antibiotic which inhibited COD and nitrogen removal.
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