title: Construction of a photocatalytic de-polluting field site in the Leopold II tunnel in Brussels.
abstract: Within the framework of the European Life+-funded project PhotoPAQ (Demonstration of Photocatalytic remediation Processes on Air Quality), which was aimed at demonstrating the effectiveness of photocatalytic coating materials on a realistic scale, a photocatalytic de-polluting field site was set up in the Leopold II tunnel in Brussels, Belgium. For that purpose, photocatalytic cementitious materials were applied on the side walls and ceiling of selected test sections inside a one-way tunnel tube. This article presents the configuration of the test sections used and the preparation and implementation of the measuring campaigns inside the Leopold II tunnel. While emphasizing on how to implement measuring campaigns under such conditions, difficulties encountered during these extensive field campaigns are presented and discussed. This included the severe de-activation observed for the investigated material under the polluted tunnel conditions, which was revealed by additional laboratory experiments on photocatalytic samples that were exposed to tunnel air. Finally, recommendations for future applications of photocatalytic building materials inside tunnels are given.
authors: Belgian Road Research Centre (BRRC), Woluwedal 42, 1200 Brussels, Belgium. Electronic address: e.boonen@brrc.be.
authors: E
authors: E
authors: Boonen
authors: Laboratory of Heat Transfer and Environmental Engineering (LHTEE), Aristotle University of Thessaloniki, Box 483, GR 54124 Thessaloniki, Greece.
authors: V
authors: V
authors: Akylas
authors: Laboratory of Heat Transfer and Environmental Engineering (LHTEE), Aristotle University of Thessaloniki, Box 483, GR 54124 Thessaloniki, Greece.
authors: F
authors: F
authors: Barmpas
authors: Université Lyon 1, CNRS, UMR5256, IRCELYON, Institut de Recherches sur la Catalyse et l'Environnement de Lyon, Villeurbanne, Lyon F 6962, France.
authors: A
authors: A
authors: Boréave
authors: CTG Italcementi Group, Via Stezzano 87, 24126 Bergamo, Italy.
authors: L
authors: L
authors: Bottalico
authors: Institut de Combustion, Aérothermique, Réactivité et Environnement (ICARE), CNRS (UPR 3021)/OSUC, 1C Avenue de la Recherche Scientifique, Orléans, France.
authors: M
authors: M
authors: Cazaunau
authors: Institut de Combustion, Aérothermique, Réactivité et Environnement (ICARE), CNRS (UPR 3021)/OSUC, 1C Avenue de la Recherche Scientifique, Orléans, France.
authors: H
authors: H
authors: Chen
authors: Institut de Combustion, Aérothermique, Réactivité et Environnement (ICARE), CNRS (UPR 3021)/OSUC, 1C Avenue de la Recherche Scientifique, Orléans, France.
authors: V
authors: V
authors: Daële
authors: CTG Italcementi Group, Via Stezzano 87, 24126 Bergamo, Italy.
authors: T
authors: T
authors: De Marco
authors: LISA, UMR CNRS 7583, Université Paris Est Créteil et Université Paris Diderot, Institut Pierre Simon Laplace, Créteil, France.
authors: J F
authors: JF
authors: Doussin
authors: LISA, UMR CNRS 7583, Université Paris Est Créteil et Université Paris Diderot, Institut Pierre Simon Laplace, Créteil, France.
authors: C
authors: C
authors: Gaimoz
authors: Physikalische Chemie /FB C, Bergische Universität Wuppertal (BUW), Gaußstr. 20, 42119 Wuppertal, Germany.
authors: M
authors: M
authors: Gallus
authors: Université Lyon 1, CNRS, UMR5256, IRCELYON, Institut de Recherches sur la Catalyse et l'Environnement de Lyon, Villeurbanne, Lyon F 6962, France.
authors: C
authors: C
authors: George
authors: LISA, UMR CNRS 7583, Université Paris Est Créteil et Université Paris Diderot, Institut Pierre Simon Laplace, Créteil, France.
authors: N
authors: N
authors: Grand
authors: Institut de Combustion, Aérothermique, Réactivité et Environnement (ICARE), CNRS (UPR 3021)/OSUC, 1C Avenue de la Recherche Scientifique, Orléans, France.
authors: B
authors: B
authors: Grosselin
authors: Italcementi Group, Via Stezzano 87, 24126 Bergamo, Italy.
authors: G L
authors: GL
authors: Guerrini
authors: Leibniz-Institut für Troposphärenforschung e.V. (TROPOS), Atmospheric Chemistry Dept., Permoserstraße 15, 04318 Leipzig, Germany.
authors: H
authors: H
authors: Herrmann
authors: Physikalische Chemie /FB C, Bergische Universität Wuppertal (BUW), Gaußstr. 20, 42119 Wuppertal, Germany.
authors: S
authors: S
authors: Ifang
authors: Physikalische Chemie /FB C, Bergische Universität Wuppertal (BUW), Gaußstr. 20, 42119 Wuppertal, Germany.
authors: J
authors: J
authors: Kleffmann
authors: Physikalische Chemie /FB C, Bergische Universität Wuppertal (BUW), Gaußstr. 20, 42119 Wuppertal, Germany.
authors: R
authors: R
authors: Kurtenbach
authors: LISA, UMR CNRS 7583, Université Paris Est Créteil et Université Paris Diderot, Institut Pierre Simon Laplace, Créteil, France.
authors: M
authors: M
authors: Maille
authors: CTG Italcementi Group, Via Stezzano 87, 24126 Bergamo, Italy.
authors: G
authors: G
authors: Manganelli
authors: Institut de Combustion, Aérothermique, Réactivité et Environnement (ICARE), CNRS (UPR 3021)/OSUC, 1C Avenue de la Recherche Scientifique, Orléans, France.
authors: A
authors: A
authors: Mellouki
authors: LISA, UMR CNRS 7583, Université Paris Est Créteil et Université Paris Diderot, Institut Pierre Simon Laplace, Créteil, France.
authors: K
authors: K
authors: Miet
authors: Leibniz-Institut für Troposphärenforschung e.V. (TROPOS), Atmospheric Chemistry Dept., Permoserstraße 15, 04318 Leipzig, Germany.
authors: F
authors: F
authors: Mothes
authors: Laboratory of Heat Transfer and Environmental Engineering (LHTEE), Aristotle University of Thessaloniki, Box 483, GR 54124 Thessaloniki, Greece.
authors: N
authors: N
authors: Moussiopoulos
authors: Leibniz-Institut für Troposphärenforschung e.V. (TROPOS), Atmospheric Chemistry Dept., Permoserstraße 15, 04318 Leipzig, Germany.
authors: L
authors: L
authors: Poulain
authors: Leibniz-Institut für Troposphärenforschung e.V. (TROPOS), Atmospheric Chemistry Dept., Permoserstraße 15, 04318 Leipzig, Germany.
authors: R
authors: R
authors: Rabe
authors: LISA, UMR CNRS 7583, Université Paris Est Créteil et Université Paris Diderot, Institut Pierre Simon Laplace, Créteil, France.
authors: P
authors: P
authors: Zapf
authors: Belgian Road Research Centre (BRRC), Woluwedal 42, 1200 Brussels, Belgium.
authors: A
authors: A
authors: Beeldens
mesh_terms: D000393:Air Pollutants / Q000737:chemistry*; D000397:Air Pollution / Q000517:prevention & control*; D001530:Belgium; D002384:Catalysis; D003252:Construction Materials; D006801:Humans; D001335:Vehicle Emissions
chemical_list: D000393:Air Pollutants; D001335:Vehicle Emissions
keywords: Air purification; Cementitious coating; Photocatalysis; Road tunnels; TiO(2)