期刊
BIOPROCESS AND BIOSYSTEMS ENGINEERING
卷 35, 期 6, 页码 985-991出版社
SPRINGER
DOI: 10.1007/s00449-012-0683-7
关键词
Polyhydroxyalkanoates; Activated sludge; Magnetic field; Feast sate; Famine state
资金
- National Science and Technology Special of Water Pollution Control [2008ZX07101-006]
- Science and Technology Department of Zhejiang Province [2008C23100]
The effect of static magnetic field on polyhydroxyalkanoates (PHAs) syntheses by activated sludge under aerobic dynamic feeding (ADF) was evaluated in sequence batch reactors (SBR), with magnetic field intensities of 42, 21, 11 and 7 millitesla (mT) exposure in the feast, feast-famine and famine periods, respectively, and one control group without magnetic field exposure. Under each level of magnetic field intensity, the effect of magnetic field exposed in the famine period to PHAs syntheses was most significant in comparison with that in the feast or feast-famine period. Maximal hydroxybutyrate (HB) and (HV) yield occurred at 21 and 11 mT, respectively, and the minimal yield occurred at 42 mT during exposure in the famine period. The maximum biodegradable rate constant of PHA was noted at 11 mT during exposure in the famine period.
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