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Bioresour Technol

Title:		Anaerobic fermentation combined with low-temperature thermal pretreatment for phosphorus-accumulating granular sludge: Release of carbon source and phosphorus as well as hydrogen production potential
Author(s):		Zou J; Li Y;
Address:		"State Key Laboratory of Pollution Control and Resource Reuse, College of Environmental Science and Engineering, Tongji University, Shanghai 200092, China. State Key Laboratory of Pollution Control and Resource Reuse, College of Environmental Science and Engineering, Tongji University, Shanghai 200092, China. Electronic address: liyongmei@tongji.edu.cn"
Journal Title:		Bioresour Technol
Year:		2016
Volume:		20160618
Issue:
Page Number:		18 - 26
DOI:		10.1016/j.biortech.2016.06.060
ISSN/ISBN:		1873-2976 (Electronic) 0960-8524 (Linking)
Abstract:		"Releases of organic compounds and phosphorus from phosphorus-accumulating granular sludge (PGS) and phosphorus-accumulating flocculent sludge (PFS) during low-temperature thermal pretreatment and anaerobic fermentation were investigated. Meanwhile, biogas production potential and microbial community structures were explored. The results indicate that much more soluble chemical oxygen demand (SCOD) and phosphorus were released from PGS than from PFS via low-temperature thermal pretreatment because of the higher extracellular polymeric substances (EPS) content in PGS and higher ratio of phosphorus reserved in EPS. Furthermore, PGS contains more anaerobes and dead cells, resulting in much higher SCOD and volatile fatty acids release from PGS than those from PFS during fermentation. PGS fermentation facilitated the n-butyric acid production, and PGS exhibited the hydrogen production potential during fermentation due to the presence of hydrogen-producing bacteria. Therefore, anaerobic fermentation combined with low-temperature thermal pretreatment can facilitate the recovery of carbon and phosphorus as well as producing hydrogen from PGS"
Keywords:		"Anaerobiosis Bacteria, Anaerobic/*metabolism Biofuels Carbon/chemistry/*metabolism Chemical Precipitation *Cold Temperature Fatty Acids, Volatile *Fermentation Hydrogen/chemistry/*metabolism Phosphorus/chemistry/*metabolism *Sewage/chemistry/microbiology;"
Notes:		"MedlineZou, Jinte Li, Yongmei eng England 2016/06/28 Bioresour Technol. 2016 Oct; 218:18-26. doi: 10.1016/j.biortech.2016.06.060. Epub 2016 Jun 18"