Journal
BIORESOURCE TECHNOLOGY
Volume 191, Issue -, Pages 79-87Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.biortech.2015.04.094
Keywords
Biodiesel; Nannochloropsis oculata; Municipal wastewater; Harvesting; pH
Ask authors/readers for more resources
The feasibility of using the mixture of seawater and municipal wastewater; (1) the wastewater before activated sludge tank, just after primary settling (BAS) and (2) the wastewater after activated sludge tank, just before addition of polymer flocculants (AAS); as culture medium for the cultivation of marine microalgae Nannochloropsis oculata was investigated. 10% BAS, 20% BAS and 10% AAS, 20% AAS, 50% AAS, 70% AAS, 100% AAS effluent loadings were well adapted to used wastewater. Sufficient dry weights obtained (345-406 mg L-1) with growth rates 0.37-0.45 for aerated cultures. High TN and TP removals (similar to 74-90%) were achieved. Harvesting technique for grown cultures was also studied with natural sedimentation and pH induced flocculation. By alkalinity induced flocculation, at pH values of 10.50, high recovery of the cells (similar to 80%) achieved with high sedimentation rates in 10 min. The flocculation efficiencies decreased, sedimentation rates increased with the increase of the cell concentration. (C) 2015 Elsevier Ltd. All rights reserved.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available