Bioresource Technology 249 (2018) 431–438 Contents lists available at ScienceDirect Bioresource Technology journal homepage: www.elsevier.com/locate/biortech Novel stepwise pH control strategy to improve short chain fatty acid production from sludge anaerobic fermentation a,b,c,d c,d a,b a,b, a,b c,d Jianwei Zhao , Dongbo Wang , Yiwen Liu , Huu Hao Ngo , Wenshan Guo , Qi Yang , c,d Xiaoming Li Joint Research Centre for Protective Infrastructure Technology and Environmental Green Bioprocess, School of Civil and Environmental Engineering, University of Technology Sydney, Ultimo, NSW 2007, Australia Department of Environmental and Municipal Engineering, Tianjin Chengjian University, Tianjin 300384, China College of Environmental Science and Engineering, Hunan University, Changsha 410082, China Key Laboratory of Environmental Biology and Pollution Control (Hunan University), Ministry of Education, Changsha 410082, China GR APHICAL A BSTRACT ARTICLE I NFO ABSTRACT Keywords: This study reports an innovative strategy known as stepwise pH fermentation, developed to enhance the pro- Waste activated sludge duction of short chain volatile fatty acids (SCFA) from waste activated sludge (WAS) anaerobic fermentation. Stepwise pH fermentation Experimental results conﬁrmed the optimal pH for WAS disruption and acidiﬁcation was 11 and 9, respectively, Short chain volatile fatty acids and corresponding optimal time was, respectively, 5 d and
Bioresource Technology – Elsevier
Published: Feb 1, 2018
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