Back to Search Start Over

Degradation of Extracellular Polymeric Substances (EPS) in Anaerobic Digestion of Dewatered Sludge.

Authors :
Dai, Xiaohu
Luo, Fan
Dai, Lingling
Dong, Bin
Source :
Procedia Environmental Sciences; Mar2013, Vol. 18, p515-521, 7p
Publication Year :
2013

Abstract

Abstract: The degradation of extracellular polymeric substances based on high-solid anaerobic digestion was investigated by gel filtration chromatography (GFC) and three-dimensional excitation and emission matrix (EEM) The organic matters of Extracellular Polymeric Substances (EPS) in the sludge decreased 24% and shifted from the tightly bound EPS (TB-EPS) fraction to the Slime fraction during anaerobic digestion. The raw sludge and the digestate had opposite molecular weights (MW) distribution in EPS fractions. From the fluorescence spectra result, tyrosine-like substances were converted to tryptophan-like substances, and more humic-like substance in Slime fration was produced with the reduction of the protein-like substance during anaerobic digestion. [Copyright &y& Elsevier]

Details

Language :
English
ISSN :
18780296
Volume :
18
Database :
Supplemental Index
Journal :
Procedia Environmental Sciences
Publication Type :
Academic Journal
Accession number :
89282895
Full Text :
https://doi.org/10.1016/j.proenv.2013.04.069