Effect of magnetic field on the accumulation of polyhydroxyalkanoates (PHAs) by microorganism in activated sludge

被引：12
|
作者：
Zhu, Sai-Chang [1 ]
Xu, Zhen-Lan [1 ]
Meng, Hui-Juan [1 ]
Zhou, Jun [1 ]
Chen, Hong [1 ]
机构：
[1] Zhejiang Univ, Dept Environm Engn, Coll Environm & Resource Sci, Hangzhou 310027, Peoples R China
来源：
BIOPROCESS AND BIOSYSTEMS ENGINEERING | 2012年 / 35卷 / 06期
关键词：
Polyhydroxyalkanoates; Activated sludge; Magnetic field; Feast sate; Famine state; MIXED MICROBIAL CULTURES; WASTE-WATER; POLYHYDROXYBUTYRATE; SUBSTRATE;
D O I：
10.1007/s00449-012-0683-7
中图分类号：
Q81 [生物工程学（生物技术）]; Q93 [微生物学];
学科分类号：
071005 ; 0836 ; 090102 ; 100705 ;
摘要：
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.
引用
收藏
页码：985 / 991
页数：7
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