Decolorization, cytotoxicity, and genotoxicity reduction during a combined ozonation/fungal treatment of dye-contaminated wastewater.
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.
Vanhulle
Sophie
S
Microbiology Unit (MBLA), Université Catholique de Louvain, Croix du Sud 3/6, 1348 Louvain-la-Neuve, Belgium. vanhulle@mbla.ucl.ac.be
Trovaslet
Marie
M
Enaud
Estelle
E
Lucas
Mathias
M
Taghavi
Safiyh
S
Van der Lelie
Daniel
D
Van Aken
Benoit
B
Foret
Magali
M
Onderwater
Rob C A
RC
Wesenberg
Dirk
D
Agathos
Spiros N
SN
Schneider
Yves-Jacques
YJ
Corbisier
Anne-Marie
AM
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
D004396:Coloring Agents; D009153:Mutagens; D016877:Oxidants; D014874:Water Pollutants, Chemical; D010126:Ozone; D042845:Laccase