MODEL OF THE ANAEROBIC METABOLISM OF THE BIOLOGICAL PHOSPHORUS REMOVAL PROCESS - STOICHIOMETRY AND PH INFLUENCE
MODEL OF THE ANAEROBIC METABOLISM OF THE BIOLOGICAL PHOSPHORUS REMOVAL PROCESS - STOICHIOMETRY AND PH INFLUENCE
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DOI：
10.1002/bit.260430605
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发表时间：
1994-03-15
影响因子：
3.8
通讯作者：
HEIJNEN, JJ
中科院分区：
文献类型：
--
作者：
SMOLDERS, GJF;VANDERMEIJ, J;HEIJNEN, JJ
在生物除磷过程的厌氧阶段，利用多磷酸盐降解为磷酸盐（其被释放）中产生的能量和糖原转化为聚-β-羟基丁酸盐（PHB）中产生的能量，吸收乙酸盐并将其转化为PHB。磷酸盐/乙酸盐比率不能被认为是代谢常数，因为吸收乙酸盐的能量需求受到pH值的强烈影响。观察到的磷酸盐/乙酸盐比率显示在5.5至8.5的pH范围内0.25至0.75 P-mol/C-mol的变化。结果表明，储存的糖原参与代谢，提供还原当量和能量的乙酸转化为聚羟基丁酸。一个结构化的代谢模型，糖原的基础上的还原当量在厌氧相和pH值的影响上的能量需求的吸收乙酸的来源，开发。该模型对实验结果进行了满意的解释。(C)1994年，John Wiley and Sons，Inc.
In the anaerobic phase of a biological phosphorus removal process, acetate is taken up and converted to PHB utilizing both energy generated in the degradation of polyphosphate to phosphate, which is released, and energy generated in the conversion of glycogen to poly-beta-hydroxy butyrate (PHB). The phosphate/acetate ratio cannot be considered a metabolic constant, because the energy requirement for the uptake of acetate is strongly influenced by the pH value. The observed phosphate/acetate ratio shows a variation of 0.25 to 0.75 P-mol/C-mol in a pH range of 5.5 to 8.5. It is shown that stored glycogen takes part in the metabolism to provide reduction equivalents and energy for the conversion of acetate to PHB. A structured metabolic model, based on glycogen as the source of the reduction equivalents in the anaerobic phase and the effect of the pH on the energy requirement of the uptake of acetate, is developed. The model explains the experimental results satisfactorily. (C) 1994 John Wiley and Sons, Inc.