| Title |
Year-long evaluation of microalgae production in wastewater using pilot-scale raceway photobioreactors: Assessment of biomass productivity and nutrient recovery capacity |
| ID_Doc |
23794 |
| Authors |
Morillas-España, A; Lafarga, T; Sánchez-Zurano, A; Acién-Fernández, FG; Rodríguez-Miranda, E; Gómez-Serrano, C; González-López, CV |
| Title |
Year-long evaluation of microalgae production in wastewater using pilot-scale raceway photobioreactors: Assessment of biomass productivity and nutrient recovery capacity |
| Year |
2021 |
| Published |
|
| DOI |
10.1016/j.algal.2021.102500 |
| Abstract |
The production of Scenedesmus sp. using wastewater was validated with pilot-scale raceway photobioreactors during a complete annual cycle in Almeria (Spain). Three different dilution rates (0.1, 0.2, or 0.3 day (-1)) were evaluated. Biomass productivity was significantly affected by season (temperature and solar radiation) achieving a maximum value of 25.1 g.m (-2).day (-1) when operating at a dilution rate of 0.2 day (-1) in summer. Up to 96% of the N-NH4+ present in the media was either assimilated by microalgae to produce biomass, converted to N-NO3 (+) by the action of nitrifying bacteria, or desorbed (stripping). Maximum nitrogen removal rates reached 4286.6 mg.m (-2).day(- 1) in summer. In terms of P-PO43+, up to 75% was removed, with removal rates ranging from 147.5 mg.m(-2).day (-1) in winter to 227.2 mg.m (-2).day (-1) in summer. Data reported herein was used to validate the ABACO model, which demonstrated to be robust enough to accurately predict biomass productivity in pilot-scale outdoor open raceways throughout the year (R-2 = 0.929; 0.05). The current study demonstrates the potential of raceway reactors and Scenedesmus sp. to recover nutrients from unprocessed wastewater with an exceptionally high content of N-NH4 (+) at pre-industrial scale. |
| Author Keywords |
Bioremediation; Microalgae; Biomass; Photobioreactor; Water reuse; Circular economy. |
| Index Keywords |
Index Keywords |
| Document Type |
Other |
| Open Access |
Open Access |
| Source |
Science Citation Index Expanded (SCI-EXPANDED) |
| EID |
WOS:000704711000005 |
| WoS Category |
Biotechnology & Applied Microbiology |
| Research Area |
Biotechnology & Applied Microbiology |
| PDF |
https://repositorio.ual.es/bitstream/10835/13316/1/7%29%20Year-long%20evaluation%20of%20microalgae%20production%20in%20wastewater%20using%20pilot-scale%20raceway%20photobioreactors%20Assessment%20of%20biomass%20productivity%20and%20nutrient%20recovery%20capacity.pdf
|