An Innovative Photoreactor, FluHelik, To Promote UVC/H2O2 Photochemical Reactions: Tertiary Treatment of an Urban Wastewater
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|Title:||An Innovative Photoreactor, FluHelik, To Promote UVC/H2O2 Photochemical Reactions: Tertiary Treatment of an Urban Wastewater
|Author:||Espíndola, Jonathan C.
Cristóvão, Raquel O.
Araújo, Sara R. F.
Santos, Miguel Machado
Montes Goyanes, Rosa María
Quintana Álvarez, José Benito
Rodil Rodríguez, María del Rosario
Boaventura, Rui A. R.
Vilar, Vítor J. P.
|Affiliation:||Universidade de Santiago de Compostela. Departamento de Química Analítica, Nutrición e Bromatoloxía
Universidade de Santiago de Compostela. Instituto de Investigación e Análises Alimentarias
|Subject:||FluHelik photoreactor | UVC/H2O2 | CECs | Urban wastewater | Zebrafish embryo toxicity test ||
|Date of Issue:||2019
|Citation:||Espíndola et al. Science of the Total Environment, 2019, 667, 197-207
|Abstract:||An innovative photoreactor, FluHelik, was used to promote the degradation of contaminants of emerging concern (CECs) by a photochemical UVC/H2O2 process. First, the system was optimized for the oxidation of a model antibiotic, oxytetracycline (OTC), using both ultrapure water (UPW) and a real urban wastewater (UWW) (collected after secondary treatment) as solution matrices. Following, the process was evaluated for the treatment of a UWW spiked with a mixture of OTC and 10 different pharmaceuticals established by the Swiss legislation at residual concentrations (∑CECs <660 μg L−1). The performance of the FluHelik reactor was analyzed both at lab and pre-pilot scale in multiple and single pass flow modes. The efficiency of the FluHelik photoreactor, at lab-scale, was evaluated at different operational conditions (H2O2 concentration, UVC lamp power (4, 6 and 11 W) and flow rate) and further compared with a conventional Jets photoreactor. Both photoreactors exhibited similar OTC removal efficiencies at the best conditions; however, the FluHelik reactor showed to be more efficient (1.3 times) in terms of mineralization when compared with the Jets reactor. Additionally, the efficiency of the UVC/H2O2 photochemical system using the FluHelik photoreactor in reducing the toxicity of the real effluent containing 11 pharmaceuticals was evaluated through zebrafish (Danio rerio) embryo toxicity bioassays. FluHelik scale-up from laboratory to pre-pilot to promote UVC/H2O2 photochemical process proved to be feasible|
|Description:||This is the accepted manuscript of the following article: Espíndola et al. Science of the Total Environment, 2019, 667, 197-207. https://doi.org/10.1016/j.scitotenv.2019.02.335
|Rights:||© Elsevier 2019. This manuscript version is made available under the CC-BY-NC-ND 4.0 license http://creativecommons.org/licenses/by-nc-nd/4.0/
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