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Characterization of activated sludge exopolymers from various origins: A combined size-exclusion chromatography and infrared microscopy study
- Source :
- Water Research. 39:3044-3054
- Publication Year :
- 2005
- Publisher :
- Elsevier BV, 2005.
-
Abstract
- High-pressure size-exclusion liquid chromatography and infrared microscopy were coupled to investigate the molecular weight and nature of extracellular polymeric substances (EPS) from various activated sludges. Six main families of compounds (proteins, polysaccharides, organic acids, lipids, mineral phases) were found either as a single molecule or as associations. The molecular weight of proteins varied from small (10 kDa) to large (600 kDa) sizes, while all polysaccharides were smaller than 1 kDa. Association of different molecules implied the presence of species large in size. The EPS chromatographic fingerprints of sludge from various origins remained stable in normal operating conditions, but were drastically modified during settling crises. In poor settling conditions, the EPS with smaller molecular sizes always prevailed and large polymers were underrepresented. The EPS identified in activated sludge were collected in a chemical database which provides the basis for comparison of municipal and industrial wastewater treatment plants (WWTP).
- Subjects :
- Paper
Environmental Engineering
Size-exclusion chromatography
Industrial Waste
engineering.material
Polysaccharide
Waste Disposal, Fluid
Industrial wastewater treatment
Biopolymers
Extracellular polymeric substance
Polysaccharides
Spectroscopy, Fourier Transform Infrared
Waste Management and Disposal
Water Science and Technology
Civil and Structural Engineering
chemistry.chemical_classification
Minerals
Chromatography
Sewage
Molecular mass
Ecological Modeling
Beer
Proteins
Lipids
Pollution
Molecular Weight
Activated sludge
chemistry
Chromatography, Gel
engineering
France
Seasons
Biopolymer
Infrared microscopy
Subjects
Details
- ISSN :
- 00431354
- Volume :
- 39
- Database :
- OpenAIRE
- Journal :
- Water Research
- Accession number :
- edsair.doi.dedup.....5f411407fbee849decefc348f2e5af0c