Kinetics of soluble microbial product formation in substrate-sufficient batch culture of activated sludge

被引：0

作者：

Y. Liu

J.-L. Rols

机构：

[1] School of Civil and Structural Engineering,

[2] Nanyang Technological University,undefined

[3] 50 Nanyang Avenue,undefined

[4] Singapore 639798,undefined

[5] Centre d'Ecologie des Systèmes Aquatiques Continentaux,undefined

[6] UMR-CNRS C5576,undefined

[7] Université Paul Sabatier,undefined

[8] 118 route de Narbonne,undefined

[9] 31062 Toulouse Cedex 4,undefined

[10] France,undefined

来源：

Applied Microbiology and Biotechnology | 2002年 / 59卷

关键词：

Biomass; Experimental Data; Sludge; Kinetic Model; Substrate Concentration;

D O I：

暂无

中图分类号：

学科分类号：

摘要：

The kinetics of soluble microbial product (SMP) formation under substrate-sufficient conditions appear to exhibit different patterns from substrate-limited cultures. However, energy spilling-associated SMP formation is not taken into account in the existing kinetic models and classification of SMP. Based on the concepts of growth yield and energy uncoupling, a kinetic model describing energy spilling-associated SMP formation in relation to the ratio of initial substrate concentration to initial biomass concentration (S0/X0) was developed for substrate-sufficient batch culture of activated sludge, and was verified by experimental data. The specific rate of energy spilling-associated SMP formation showed an increasing trend with the S0/X0 ratio up to its maximum value. The SMP productivity coefficient (αp/e) was defined from the model on the basis of energy spilling-associated substrate consumption. Results revealed that less than 5% of energy spilling-associated substrate consumption was converted into SMP.

引用

页码：605 / 608

页数：3