Effect of initial pH on short chain fatty acid production during the anaerobic fermentation of membrane bioreactor sludge enhanced by alkyl polyglcoside

Zhao, Jianwei, Yang, Qi, Li, Xiaoming, Wang, Dongbo, An, Hongxue, Xie, Ting, Xu, Qiuxiang, Deng, Yongchao and Zeng, Guangming (2015) Effect of initial pH on short chain fatty acid production during the anaerobic fermentation of membrane bioreactor sludge enhanced by alkyl polyglcoside. International Biodeterioration and Biodegradation, 104 283-289. doi:10.1016/j.ibiod.2015.06.012


Author Zhao, Jianwei
Yang, Qi
Li, Xiaoming
Wang, Dongbo
An, Hongxue
Xie, Ting
Xu, Qiuxiang
Deng, Yongchao
Zeng, Guangming
Title Effect of initial pH on short chain fatty acid production during the anaerobic fermentation of membrane bioreactor sludge enhanced by alkyl polyglcoside
Journal name International Biodeterioration and Biodegradation   Check publisher's open access policy
ISSN 0964-8305
1879-0208
Publication date 2015-10
Sub-type Article (original research)
DOI 10.1016/j.ibiod.2015.06.012
Volume 104
Start page 283
End page 289
Total pages 7
Place of publication Camden, London, United Kingdom
Publisher Elsevier
Collection year 2016
Language eng
Abstract Membrane bioreactor (MBR) sludge anaerobic fermentation for short chain fatty acid (SCFA) production has drawn much attention as it can produce value-added product and reduce sludge volume simultaneously. However, SCFA production from sludge is always limited due to the low hydrolysis rate and rapid consumption by methanogens. In this study, an efficient and green strategy was developed by adding biosurfactant alkyl polyglycoside (APG) into MBR sludge to enhance SCFA production. Experimental results showed that the yield of SCFA reached 282.9 mg chemical oxygen demand (COD)/g volatile suspended solids (VSS) with the optimum APG dosage of 0.2 g/g dry sludge (DS), which was 4.8-fold of the blank. Furthermore, the effect of initial pH ranging from 4 to 12 on SCFA production in the presence of APG was also studied. Results showed SCFA productions from MBR sludge in the presence of APG at initial alkaline pH values were more efficient than those at acidic and near-neutral pH values, and the optimum initial pH was 11.
Keyword Alkyl polyglycoside
Biosurfactant
Initial pH
MBR sludge
Q-Index Code C1
Q-Index Status Confirmed Code
Institutional Status UQ

Document type: Journal Article
Sub-type: Article (original research)
Collections: Official 2016 Collection
Advanced Water Management Centre Publications
 
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