RT info:eu-repo/semantics/article
T1 Growth performance and nutrient removal of a Chlorella vulgaris-Rhizobium sp. co-culture during mixotrophic feed-batch cultivation in synthetic wastewater
A1 Ferro, Lorenza
A1 Gojkovic, Zivan
A1 Muñoz Torre, Raúl
A1 Funk, Christiane
K1 Algae
K1 Algas
K1 Bacteria
K1 Bacterias
K1 Symbiosis
K1 Simbiosis
K1 Wastewater
K1 Aguas residuales
AB The subarctic green algal strain Chlorella vulgaris 13-1, newly isolated from Northern Sweden, and its co-occurring bacterium Rhizobium sp. were tested for their ability to produce valuable biomass and remove nutrients from synthetic wastewater during mixotrophic feed-batch cultivation at multiple hydraulic retention times (HRTs = 7, 5 and 3 days). The algal-bacterial co-culture showed better performance compared to the corresponding axenic cultures (HRT = 7 days), with a biomass concentration of 0.63 ± 0.03 g/L and removal rates of 49.5 ± 6.1% TOC, 55.7 ± 8.04% TN and 95.6 ± 3.6% TP at steady-state. Culture stability and a high nutrient removal capacity were recorded in the algal-bacterial co-culture even at HRTs of 5 and 3 days. Interestingly, reducing the HRT from 7 to 5 days resulted in a higher lipid content of the biomass, further reduction of the HRT to 3 days enhanced both daily biomass productivity (1.03 g/L/day) and nutrient assimilation. Mixotrophic co-cultivation of C. vulgaris-Rhizobium sp. can successfully be applied for wastewater reclamation in continuous mode at HRT of 3–7 days, and thus is suitable for both summer and winter conditions in Nordic countries.
PB Elsevier
SN 2211-9264
YR 2019
FD 2019
LK http://uvadoc.uva.es/handle/10324/46536
UL http://uvadoc.uva.es/handle/10324/46536
LA eng
NO Algal Research, 2019, vol. 44. 8 p.
NO Producción Científica
DS UVaDOC
RD 05-may-2024