ROLE OF GLYCOGEN IN ACETATE UPTAKE AND POLYHYDROXYALKANOATE SYNTHESIS IN ANAEROBIC-AEROBIC ACTIVATED-SLUDGE WITH A MINIMIZED POLYPHOSPHATE CONTENT

被引:120
作者
LIU, WT
MINO, T
NAKAMURA, K
MATSUO, T
机构
[1] AGCY IND SCI & TECHNOL,NATL INST BIOSCI & HUMAN TECHNOL,1-1 HIGASHI,TSUKUBA,IBARAKI 305,JAPAN
[2] UNIV TOKYO,DEPT URBAN ENGN,BUNKYO KU,TOKYO 113,JAPAN
来源
JOURNAL OF FERMENTATION AND BIOENGINEERING | 1994年 / 77卷 / 05期
关键词
D O I
10.1016/0922-338X(94)90124-4
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 role of glycogen in the uptake of acetate in anaerobic-aerobic activated sludge without enhanced biological phosphorus removal were investigated. Although the polyphosphate content of the sludge was minimized by lowering the phosphorus feeding concentration, significant acetate uptake and accumulation of polyhydroxyalkanoates (PHAs) were observed in proportion to glycogen consumption under anaerobic conditions. The results of anaerobic inhibition studies, which showed suppressive effects on acetate uptake by a glycolysis inhibitor (iodoacetate) but not by a membrane ATPase inhibitor (N,N'-dicyclohexyl carbodiimide), supported an assumption that glycogen degradation through glycolysis supplies the required ATP and reducing power for PHA synthesis from acetate and consumed glycogen. Under subsequent aerobic conditions, the accumulated PHAs were depleted and the consumed glycogen recovered to the same level as that at the start of the anaerobic phase. Iodoacetate also inhibited the recovery of glycogen under aerobic conditions, suggesting that nearly 50% of the PHAs depleted was used for glycogen synthesis through reversed glycolysis.
引用
收藏
页码:535 / 540
页数:6
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