Phycobiliprotein recovery coupled to the tertiary treatment of wastewater in semi-continuous photobioreactors. Tracking contaminants of emerging concern
2023
Bellver, Marta | Díez-Montero, Rubén | Escolà Casas, Mònica | Matamoros, Víctor | Ferrer, Ivet | Díez-Montero, Rubén [0000-0001-8435-0195] | Ferrer, Ivet [0000-0002-4568-4843] | Consejo Superior de Investigaciones Científicas [https://ror.org/02gfc7t72]
This study evaluated a tertiary wastewater treatment technology using cyanobacteria to recover value-added phycobiliproteins. The presence of contaminants of emerging concern (CECs) in wastewater, cyanobacterial biomass and pigments recovered were also analyzed. For this, a wastewater-borne cyanobacterium (Synechocystis sp. R2020) was used to treat secondary effluent from a municipal wastewater treatment plant, with and without nutrients supplementation. Then, the stability of phycobiliprotein production was assessed by operating the photobioreactor in semi-continuous mode. Results showed similar biomass productivity with and without nutrients supplementation (153.5 and 146.7 mg L-1 d-1, respectively). Upon semi-continuous operation, the phycobiliprotein content was stable and reached up to 74.7 mg gDW-1. The phycocyanin purity ratio ranged from 0.5 to 0.8, corresponding to food grade (>0.7). Out of 22 CECs detected in secondary effluent, only 3 were present in the phycobiliprotein extracts. In order to identify applications, prospective research should focus on CECs removal during pigment purification.
Mostrar más [+] Menos [-]This research was funded by the R + D + I projects AL4BIO (RTI2018-099495-B-C21) and Cyan2Bio (PID2021-126564OB-C32), funded by MCIN/AEI/ 10.13039/501100011033 and “ERDF A way of making Europe’’. Marta Bellver acknowledges her grant PRE2019-091552 funded by MCIN/AEI/ 10.13039/501100011033 and by “ESF Investing in your future”. Rubén Díez-Montero acknowledges his grant IJC2019-042069-I funded by MCIN/AEI/ 10.13039/501100011033. Mònica Escolà is grateful to the Beatriu de Pinós 2018 grant-programme (MSCA grant agreement number 801370).
Mostrar más [+] Menos [-]Peer reviewed
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