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Photocatalytic degradation of paracetamol on immobilized TiO2 in a low-tech reactor by solar light for water treatment Dufner, Lukas Aresté i Saló, Lluc Graells Sobré, Moisès Pérez Moya, Montserrat Kern, Frank Rheinheimer, Wolfgang Universitat Politècnica de Catalunya. Departament d'Enginyeria Química Universitat Politècnica de Catalunya. ENCORE - Energy Catalysis Process Reaction Engineering Àrees temàtiques de la UPC::Enginyeria química Water -- Purification Photocatalysis Acetaminophen Photocatalysis TiO2 Solar reactor Geopolymer coating Paracetamol Degradation Water treatment Aigua -- Depuració Fotocatàlisi Paracetamol Photocatalytic water treatment is an appealing concept to mineralize organic contaminants in contaminated water. In this study, the UV-resistant drug paracetamol (PCT) in aqueous solution is degraded by using a solar irradiated loop-reactor equipped with a TiO 2 (P25) photocatalyst. The catalyst powder was dispersed in a geopolymer surface coating applied to aluminum-U-profiles connected by filament-printed polymer elements. Different assays with variations in initial PCT concentration were performed under natural solar radiation to determine the degradation kinetics of the PCT and correlate it to applied solar radiation energy density. Depending on experimental conditions, degradation efficiencies of 37.0–75.1 % were achieved within 3 h. Control samples without catalyst show no degradation. No degradation of the catalyst activity was observed within 42 h of operation time. The study shows the feasibility of this simple and scalable reactor design and coating technology for water purification under off-grid conditions provided sufficient solar radiation is available. Peer Reviewed Postprint (published version) 2024-06 Article Dufner, L. [et al.]. Photocatalytic degradation of paracetamol on immobilized TiO2 in a low-tech reactor by solar light for water treatment. "Open ceramics", Juny 2024, vol. 18, núm. article 100599. 2666-5395 https://hdl.handle.net/2117/411741 10.1016/j.oceram.2024.100599 eng https://www.sciencedirect.com/science/article/pii/S2666539524000634 info:eu-repo/grantAgreement/AEI/Plan Estatal de Investigación Científica y Técnica y de Innovación 2017-2020/PID2020-116051RB-I00/ES/IMPLANTACION DE LA ECONOMIA CIRCULAR EN LA INDUSTRIA DE PROCESO (CEPI): METODOS Y HERRAMIENTAS PARA LA INTEGRACION CIRCULAR DE SISTEMAS/ http://creativecommons.org/licenses/by/4.0/ Open Access Attribution 4.0 International application/pdf Elsevier