Characterization of the proton binding sites of extracellular polymeric substances in an anaerobic membrane bioreactor

This paper focuses on the characterization of the chemical compositions and acidic constants of the extracellular polymeric substances (EPSs) in an anaerobic membrane bioreactor treating synthetic brewery wastewater by using chemical analysis, linear programming analysis (LPA) of titration data, and...

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Bibliographic Details
Published in:Water research (Oxford) 2015-07, Vol.78, p.133-143
Main Authors: Liu, Yi, Chang, Sheng, Defersha, Fantahun M.
Format: Article
Language:English
Subjects:
Acidity constant
Anaerobic membrane bioreactor (AnMBR)
Bacteria
Binding Sites
Biofouling
Bioreactors
Bioreactors - microbiology
Complexation
EPS
Extracellular polymeric substance (EPS)
Filtration
Industrial Waste
Linear programming
Linear programming analysis
Membranes
Membranes, Artificial
Polarization
Polymers - chemistry
Polymers - metabolism
Proton binding site
Protons
Soluble microbial product (SMP)
Titrimetry
Waste Disposal, Fluid - methods
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Summary:This paper focuses on the characterization of the chemical compositions and acidic constants of the extracellular polymeric substances (EPSs) in an anaerobic membrane bioreactor treating synthetic brewery wastewater by using chemical analysis, linear programming analysis (LPA) of titration data, and FT-IR analysis. The linear programming analysis of titration data revealed that the EPSs have proton binding sites with pKa values from pKa ≤ 6, between 6 and 7, and approximately 9.8. The strong acidic sites (pKa ≤ 6) and some weak acidic sites (7.5 
ISSN:0043-1354
1879-2448
DOI:10.1016/j.watres.2015.04.007