期刊
BIORESOURCE TECHNOLOGY
卷 274, 期 -, 页码 313-320出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.biortech.2018.10.034
关键词
Microalgae; Activated sludge; Co-culture system; Nutrient recovery; Biomass valorization
资金
- National Key Research and Development Program-China [2016YFB0601004]
- Pearl River S&T Nova Program of Guangzhou, China [201610010155]
- Natural Science Foundation for Research Team of Guangdong Province, China [2016A030312007]
- Guangdong Natural Science Foundation, China [2016A030313171]
The aim of this work was to study the performance of pollutants removal and biomass production by co-culture of Chlorella vulgaris and activated sludge in a batch photobioreactor (PBR), compared with their single system to treat a low C/N ratio (COD/N = 4.3) wastewater. The co-culture system surpassed activated sludge system in terms of nutrients removal and outperformed microalgae alone system in regard to COD removal. Biomass productivity of the co-culture system was 343.3 mg L-1 d(-1), and the harvested biomass could be developed as biofuels, animal feeds or soil conditioners due to the improved calorific value and cellular composition compared with activated sludge. The low C/N ratio wastewater enabled bacteria to maintain a relatively low level, hence in favor of microalgae enrichment and nutrient recovery.
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