Phycobiliprotein recovery coupled to the tertiary treatment of wastewater in semi-continuous photobioreactors. Tracking contaminants of emerging concern

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.

Bibliographic Details

Main Authors:	Bellver, Marta, Díez-Montero, Rubén, Escolà Casas, Mònica, Matamoros, Víctor, Ferrer, Ivet
Other Authors:	0000-0001-8435-0195
Format:	artículo biblioteca
Language:	English
Published:	Elsevier 2023-06-05
Subjects:	Wastewater, Bioproduct, Cyanobacteria, Organic micropollutants, Pigments, http://metadata.un.org/sdg/6, Ensure availability and sustainable management of water and sanitation for all,
Online Access:	http://hdl.handle.net/10261/329715 https://api.elsevier.com/content/abstract/scopus_id/85161942896
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