title: Decolorization, cytotoxicity, and genotoxicity reduction during a combined ozonation/fungal treatment of dye-contaminated wastewater.
abstract: In view of compliance with increasingly stringent environmental legislation imposed by regional, national, and supranational (e.g., European Union) authorities, innovative environmental technologies for the treatment of dye-contaminated effluents are necessary in the color industry. In this study, effluents of an industrial dye producer were subjected to distinct treatment trains following an initial qualitative characterization. The effectiveness of ozonation and a treatment using white rot fungi (WRF) and their enzymes were compared with respect to parameters such as residual color, toxicity on human cells, and genotoxicity. A combined ozonation/WRF process was also investigated. The effluent exhibited significant toxicity that was reduced by only 10% through ozonation, whereas the fungal treatment achieved a 35% reduction. A combined treatment (ozone/WRF) caused an abatement of the toxicity by more than 70%. In addition, the initial genotoxicity of the effluent was still present after the ozone treatment, while it was completely removed through the fungal treatment.
authors.affiliation: Microbiology Unit (MBLA), Université Catholique de Louvain, Croix du Sud 3/6, 1348 Louvain-la-Neuve, Belgium. vanhulle@mbla.ucl.ac.be
authors.forename: Sophie
authors.initials: S
authors.lastname: Vanhulle
authors.forename: Marie
authors.initials: M
authors.lastname: Trovaslet
authors.forename: Estelle
authors.initials: E
authors.lastname: Enaud
authors.forename: Mathias
authors.initials: M
authors.lastname: Lucas
authors.forename: Safiyh
authors.initials: S
authors.lastname: Taghavi
authors.forename: Daniel
authors.initials: D
authors.lastname: Van der Lelie
authors.forename: Benoit
authors.initials: B
authors.lastname: Van Aken
authors.forename: Magali
authors.initials: M
authors.lastname: Foret
authors.forename: Rob C A
authors.initials: RC
authors.lastname: Onderwater
authors.forename: Dirk
authors.initials: D
authors.lastname: Wesenberg
authors.forename: Spiros N
authors.initials: SN
authors.lastname: Agathos
authors.forename: Yves-Jacques
authors.initials: YJ
authors.lastname: Schneider
authors.forename: Anne-Marie
authors.initials: AM
authors.lastname: Corbisier
mesh_terms: D000818:Animals; D018938:Caco-2 Cells; D004396:Coloring Agents / Q000737:chemistry / Q000378:metabolism / Q000633:toxicity; D006801:Humans; D042845:Laccase / Q000378:metabolism; D008099:Liver / Q000378:metabolism; D009153:Mutagens / Q000737:chemistry / Q000378:metabolism / Q000633:toxicity; D016877:Oxidants / Q000737:chemistry; D010126:Ozone / Q000737:chemistry*; D011124:Polyporaceae / Q000378:metabolism*; D051381:Rats; D014865:Waste Disposal, Fluid / Q000379:methods; D014874:Water Pollutants, Chemical / Q000737:chemistry / Q000378:metabolism / Q000633:toxicity; D018508:Water Purification / Q000379:methods
chemical_list: D004396:Coloring Agents; D009153:Mutagens; D016877:Oxidants; D014874:Water Pollutants, Chemical; D010126:Ozone; D042845:Laccase