Web of Science: 15 citations, Scopus: 18 citations, Google Scholar: citations,
Performance of microalgal photobioreactor treating toilet wastewater : pharmaceutically active compound removal and biomass harvesting
Hom-Diaz, Andrea (Universitat Autònoma de Barcelona. Departament d'Enginyeria Química, Biològica i Ambiental)
Jaen-Gil, Adrián (Institut Català de Recerca de l'Aigua)
Bello-Laserna, Iris (Universitat Autònoma de Barcelona. Departament d'Enginyeria Química, Biològica i Ambiental)
Rodriguez-Mozaz, Sara (Institut Català de Recerca de l'Aigua)
Vicent i Huguet, Teresa (Universitat Autònoma de Barcelona. Departament d'Enginyeria Química, Biològica i Ambiental)
Barceló, Damià (Institut Català de Recerca de l'Aigua)
Blánquez Cano, Paqui (Universitat Autònoma de Barcelona. Departament d'Enginyeria Química, Biològica i Ambiental)

Date: 2017
Abstract: In this study, a 1200L outdoor pilot scale microalgal photobioreactor (PBR) was used for toilet wastewater (WW) treatment and evaluate its ability to remove pharmaceutically active compounds (PhACs). The PBR was operated at two different hydraulic retention times (HRTs), which were 8 and 12days, during Period I (September-October) and Period II (October-December), respectively. Algal biomass concentrations varied by operating period because of seasonal changes. Nutrients (ammonia, nitrogen and total phosphorous) and chemical oxygen demand (COD) were monitored and efficiently removed in both periods (>80%), attaining the legislation limits. At the theoretical hydraulic steady state in both periods, pharmaceutical removal reached high levels (>48%). Two harvesting techniques were applied to the PBR microalgae effluent. Gravity sedimentation was efficient for biomass removal (>99% in 7min) in Period I when large particles, flocs and aggregates were present. In contrast, a longer sedimentation time was required when biomass was mainly composed of single cells (88% clarification in a 24h in Period II). The second harvesting technique investigated was the co-pelletization of algal biomass with the ligninolytic fungus Trametes versicolor, attaining >98% clarification for Period II biomass once pellets were formed. The novel technology of co-pelletization enabled the complete harvesting of single algae cells from the liquid medium in a sustainable way, which benefits the subsequent use of both biomass and the clarified effluent.
Note: Número d'acord de subvenció MINECO/RYC-2014-16707
Note: Número d'acord de subvenció MINECO/CTM2013-48548-C2
Note: Número d'acord de subvenció AGAUR/2014/SGR-476
Note: Número d'acord de subvenció AGAUR/2014/SGR-599
Note: Número d'acord de subvenció AGAUR/2014/SGR-291
Note: Número d'acord de subvenció AGAUR/2013/FI_B 00302
Rights: Aquest document està subjecte a una llicència d'ús Creative Commons. Es permet la reproducció total o parcial i la comunicació pública de l'obra, sempre que no sigui amb finalitats comercials, i sempre que es reconegui l'autoria de l'obra original. No es permet la creació d'obres derivades. Creative Commons
Language: Anglès.
Document: article ; recerca ; acceptedVersion
Subject: Microalgae ; Microalgae harvesting ; Pharmaceutical removal ; Photobioreactor ; Wastewater treatment
Published in: The Science of the total environment, Vol. 592 (Aug. 2017) , p. 1-11, ISSN 0048-9697

DOI: 10.1016/j.scitotenv.2017.02.224


Available from: 2019-08-30
Post-print

The record appears in these collections:
Articles > Research articles
Articles > Published articles

 Record created 2018-07-13, last modified 2018-10-08



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