Journal
BIORESOURCE TECHNOLOGY
Volume 102, Issue 10, Pages 5639-5644Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.biortech.2011.02.054
Keywords
Secondary wastewater effluent; N/P removal; Biomass production; Microalgae; CO2 sequestration
Funding
- Canadian Foundation of Innovation (CFI)
- Natural Science and Engineering Research Council of Canada (NSERC)
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Biomass productivity of 350 mg DCW L-1 day(-1) with a final biomass concentration of 3.15 g DCW L-1 was obtained with Neochloris oleoabundans grown in artificial wastewater at sodium nitrate and phosphate concentrations of 140 and 47 mg L-1, respectively, with undetectable levels of residual N and P in effluents. In secondary municipal wastewater effluents enriched with 70 mg N L-1, the alga achieved a final biomass concentration of 2.1 g DCW L-1 and a biomass productivity of 233.3 mg DCW L-1 day(-1). While N removal was very sensitive to N:P ratio, P removal was independent of N:P ratio in the tested range. These results indicate that N. oleoabundans could potentially be employed for combined biofuel production and wastewater treatment. (C) 2011 Elsevier Ltd. All rights reserved.
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