Evaluation on factors influencing the heterotrophic growth on the soluble microbial products of autotrophs

Ni, Bing-Jie, Zeng, Raymond J., Fang, Fang, Xie, Wen-Ming, Xu, Juan, Sheng, Guo-Ping, Sun, Yu-Jiao and Yu, Han-Qing (2011) Evaluation on factors influencing the heterotrophic growth on the soluble microbial products of autotrophs. Biotechnology and Bioengineering, 108 4: 804-812. doi:10.1002/bit.23012


Author Ni, Bing-Jie
Zeng, Raymond J.
Fang, Fang
Xie, Wen-Ming
Xu, Juan
Sheng, Guo-Ping
Sun, Yu-Jiao
Yu, Han-Qing
Title Evaluation on factors influencing the heterotrophic growth on the soluble microbial products of autotrophs
Journal name Biotechnology and Bioengineering   Check publisher's open access policy
ISSN 0006-3592
1097-0290
Publication date 2011-04
Sub-type Article (original research)
DOI 10.1002/bit.23012
Volume 108
Issue 4
Start page 804
End page 812
Total pages 9
Place of publication Hoboken, NJ United States
Publisher John Wiley and Sons
Language eng
Formatted abstract
In this work, the heterotrophic growth on the microbial products of autotrophs and the effecting factors were evaluated with both experimental and modeling approaches. Fluorescence in situ hybridization (FISH) analysis illustrated that ammonia oxidizers (AOB), nitrite oxidizers (NOB), and heterotrophs accounted for about 65%, 20%, and 15% of the total bacteria, respectively. The mathematical evaluation of experimental data reported in literature indicated that heterotrophic growth in nitrifying biofilm (30-50%) and granules (30%) was significantly higher than that of nitrifying sludge (15%). It was found that low influent ammonium resulted in a lower availability of soluble microbial products (SMP) and a slower heterotrophic growth, but high ammonium (>150mgNL -1) feeding would lead to purely AOB dominated sludge with high biomass-associated products contained effluent, although the absolute heterotrophic growth increased. Meanwhile, the total active biomass concentration increased gradually with the increasing solids retention time, whereas the factions of active AOB, NOB, and heterotrophs varied a lot at different solids retention times. This work could be useful for better understanding of the autotrophic wastewater treatment systems
Keyword Autotrophs
Effecting factors
Heterotrophs
Soluble microbial products (SMP)
Activated-Sludge
Q-Index Code C1
Q-Index Status Provisional Code
Institutional Status Non-UQ

Document type: Journal Article
Sub-type: Article (original research)
Collection: Advanced Water Management Centre Publications
 
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