title: Catalytic ozonation of metolachlor under continuous operation using nanocarbon materials grown on a ceramic monolith.
abstract: The catalytic ozonation of the herbicide metolachlor (MTLC) was tested using carbon nanomaterials as catalysts. Multiwalled carbon nanotubes were used in semi-batch experiments and carbon nanofibres grown on a honeycomb cordierite monolith were tested in continuous experiments. The application of the carbon catalyst was shown to improve the mineralization degree of MTLC and to decrease the toxicity of the solution subject to ozonation. Degradation by-products were also followed in order to compare the two processes. The application of the carbon coated monolith to the continuous ozonation process was shown to have potential as it improved the TOC removal from 5% to 35% and decreased the inhibition of luminescent activity of Vibrio Fischeri from 25% to 12%.
authors.affiliation: Laboratório de Catálise e Materiais (LCM), Departamento de Engenharia Química, Faculdade de Engenharia, Universidade do Porto, Rua Dr. Roberto Frias, 4200-465 Porto, Portugal. joao.restivo@fe.up.pt
authors.forename: J
authors.initials: J
authors.lastname: Restivo
authors.forename: J J M
authors.initials: JJ
authors.lastname: Órfão
authors.forename: S
authors.initials: S
authors.lastname: Armenise
authors.forename: E
authors.initials: E
authors.lastname: Garcia-Bordejé
authors.forename: M F R
authors.initials: MF
authors.lastname: Pereira
mesh_terms: D000081:Acetamides / Q000737:chemistry* / Q000633:toxicity; D048908:Aliivibrio fischeri / Q000378:metabolism; D002384:Catalysis; D002516:Ceramics / Q000737:chemistry; D006540:Herbicides / Q000737:chemistry / Q000633:toxicity; D049449:Luminescence; D057139:Nanofibers / Q000737:chemistry*; D037742:Nanotubes, Carbon / Q000737:chemistry*; D016877:Oxidants / Q000737:chemistry*; D010126:Ozone / Q000737:chemistry*; D014874:Water Pollutants, Chemical / Q000737:chemistry* / Q000633:toxicity; D018508:Water Purification / Q000379:methods
chemical_list: D000081:Acetamides; D006540:Herbicides; D037742:Nanotubes, Carbon; D016877:Oxidants; D014874:Water Pollutants, Chemical; C055335:cordierite; D010126:Ozone; C051786:metolachlor