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Single stage treatment of saline wastewater with marine bacterial-microalgae consortia in a fixed-bed photobioreactor.
- Source :
-
Journal of hazardous materials [J Hazard Mater] 2015 Jul 15; Vol. 292, pp. 155-63. Date of Electronic Publication: 2015 Feb 23. - Publication Year :
- 2015
-
Abstract
- Currently, the treatment of aquaculture-origin effluents is mainly performed through land-based recirculating aquaculture systems (RAS). In this study, we evaluate and introduce a novel immobilized/packed bed bioreactor which uses a synthetic textile as the support medium. A marine microbial consortium was developed on the textile by its inoculation with the microalgae Picochlorum sp. The bioreactor was tested with variable loadings of C and N and showed outstanding performance approaching removal rates up to 95% within a few hours (4-5h) of operation. Pyrosequencing analysis revealed a novel microbial consortium consisting mainly of chitrinomycetes, Pseudomonas sp. and the absence of β-proteobacteria, which is the Class encompassing autotrophic nitrifiers. Quantitative polymerase chain reaction further confirmed these findings suggesting heterotrophic nitrification and aerobic denitrification as the principal mechanisms of N-removal from the bioreactor. Overall our findings reveal the potential of the AdvanTex System for the treatment of marine aquaculture effluents-COD reduction and N-removal, in a single stage.<br /> (Copyright © 2015 Elsevier B.V. All rights reserved.)
Details
- Language :
- English
- ISSN :
- 1873-3336
- Volume :
- 292
- Database :
- MEDLINE
- Journal :
- Journal of hazardous materials
- Publication Type :
- Academic Journal
- Accession number :
- 25804790
- Full Text :
- https://doi.org/10.1016/j.jhazmat.2015.02.060