title: Introduction by the guest editors.
authors.affiliation: University of Patras, Department of Chemical Engineering, Caratheodory 1, University Campus, GR-26504 Patras, Greece. mantzavinos@chemeng.upatras.gr.
authors.forename: Dionissios
authors.initials: D
authors.lastname: Mantzavinos
authors.forename: Sixto
authors.initials: S
authors.lastname: Malato
mesh_terms: D061808:Air Filters; D002384:Catalysis; D055668:Photochemical Processes; D018508:Water Purification; D003226:Congresses as Topic