TY - JOUR
T1 - Effects of potassium peroxymonosulfate on disintegration of waste sludge and properties of extracellular polymeric substances
AU - Niu, Tianhao
AU - Zhou, Zhen
AU - Ren, Weichao
AU - Jiang, Lu Man
AU - Li, Bingyue
AU - Wei, Haijuan
AU - Li, Jing
AU - Wang, Luochun
N1 - Publisher Copyright:
© 2015 Elsevier Ltd.
PY - 2016/1/1
Y1 - 2016/1/1
N2 - Effects of peroxymonosulfate (PMS) oxidation on disintegration degree (DD) and extracellular polymeric substances (EPS) properties of waste activated sludge were investigated. A combined approach of fractionation procedure and parallel factor (PARAFAC) analysis was applied to characterize EPS of sludge. Results indicated that PMS oxidation effectively broke sludge particles, resulting in DD in total nitrogen of 39.8% at 10 mg PMS (g SS)-1. After PMS treatment, EPS increased significantly and mostly transferred to slime layer rather than loosely bound EPS (LB-EPS), and the ratio of slime to tightly bound EPS was correlated significantly with PMS dosage. With increasing PMS dosage, polysaccharides in EPS increased, while proteins in EPS and DNA in slime EPS increased firstly and then decreased. PARAFAC analysis of excitation-emission matrix spectra showed that tryptophan-like substances in both slime and LB-EPS were greatly influenced by PMS oxidation, and humic-like fluorophores in slime EPS were positively correlated with PMS dosage.
AB - Effects of peroxymonosulfate (PMS) oxidation on disintegration degree (DD) and extracellular polymeric substances (EPS) properties of waste activated sludge were investigated. A combined approach of fractionation procedure and parallel factor (PARAFAC) analysis was applied to characterize EPS of sludge. Results indicated that PMS oxidation effectively broke sludge particles, resulting in DD in total nitrogen of 39.8% at 10 mg PMS (g SS)-1. After PMS treatment, EPS increased significantly and mostly transferred to slime layer rather than loosely bound EPS (LB-EPS), and the ratio of slime to tightly bound EPS was correlated significantly with PMS dosage. With increasing PMS dosage, polysaccharides in EPS increased, while proteins in EPS and DNA in slime EPS increased firstly and then decreased. PARAFAC analysis of excitation-emission matrix spectra showed that tryptophan-like substances in both slime and LB-EPS were greatly influenced by PMS oxidation, and humic-like fluorophores in slime EPS were positively correlated with PMS dosage.
KW - Excitation-emission matrix
KW - Extracellular polymeric substances (EPS)
KW - Parallel factor analysis
KW - Peroxymonosulfate
KW - Sludge disintegration
UR - https://www.scopus.com/pages/publications/84946866322
U2 - 10.1016/j.ibiod.2015.10.021
DO - 10.1016/j.ibiod.2015.10.021
M3 - 文章
AN - SCOPUS:84946866322
SN - 0964-8305
VL - 106
SP - 170
EP - 177
JO - International Biodeterioration and Biodegradation
JF - International Biodeterioration and Biodegradation
ER -