title: Evaluation of an eventual ecotoxicity induced by textile effluents using a battery of biotests.
abstract: Textile industry is considered as one of the important factors of the economic growth in Tunisia. However, this prominent role has certainly some drawbacks mainly represented by the huge amounts of textile wastewaters generated that become a real menace to nature. Many previous studies showed the purifying potential of some activated sludge and bacteria (Pseudomonas putida) to decolourize textile effluents. However, in many cases, decolourization of wastewaters is not necessary associated with detoxification, generating a real risk for the ecosystem in general. We evaluated in this work the induced toxicity of a textile effluent before and after its treatment with activated sludge followed by P. putida, using a battery of biotests. This study proved the detoxifying power of the activated sludge according to most of ecotoxicity tests. The treatment with P. putida did not improve the quality of the effluent; on the contrary, it could increase its toxicity. Daphnia magna and Raphidocelis subcapitata appear to be the most sensitive organisms in assessing eventual toxicity caused by this kind of wastewaters.
authors.affiliation: Unité de substances Naturelles Bioactives et Biotechnologie, UR12ES12, Faculté de Pharmacie de Monastir, Université de Monastir, Rue Avicenne, 5000, Monastir, Tunisia.
authors.forename: Ahmed
authors.initials: A
authors.lastname: Bedoui
authors.affiliation: Department of Life Sciences and Systems Biology, University of Turin, viale Mattioli 25, 10125, Turin, Italy.
authors.forename: Valeria
authors.initials: V
authors.lastname: Tigini
authors.affiliation: Unité de substances Naturelles Bioactives et Biotechnologie, UR12ES12, Faculté de Pharmacie de Monastir, Université de Monastir, Rue Avicenne, 5000, Monastir, Tunisia.
authors.forename: Kamel
authors.initials: K
authors.lastname: Ghedira
authors.affiliation: Department of Life Sciences and Systems Biology, University of Turin, viale Mattioli 25, 10125, Turin, Italy.
authors.forename: Giovanna Cristina
authors.initials: GC
authors.lastname: Varese
authors.affiliation: Unité de substances Naturelles Bioactives et Biotechnologie, UR12ES12, Faculté de Pharmacie de Monastir, Université de Monastir, Rue Avicenne, 5000, Monastir, Tunisia. leila.chekir@laposte.net.|Laboratoire de Biologie Cellulaire et Moléculaire, Faculté de Médecine Dentaire, Université de Monastir, Rue Avicenne, 5000, Monastir, Tunisia. leila.chekir@laposte.net.
authors.forename: Leila
authors.initials: L
authors.lastname: Chekir Ghedira
mesh_terms: D000818:Animals; D029064:Araceae; D000460:Chlorophyta; D003621:Daphnia; D017753:Ecosystem; D007220:Industrial Waste / Q000032:analysis*; D020128:Inhibitory Concentration 50; D050296:Microbial Viability / Q000187:drug effects; D016958:Pseudomonas putida; D013783:Textile Industry; D018675:Toxicity Tests; D014416:Tunisia; D062065:Wastewater / Q000032:analysis*; D014874:Water Pollutants, Chemical / Q000032:analysis* / Q000633:toxicity; D018508:Water Purification; D060753:Water Quality
chemical_list: D007220:Industrial Waste; D062065:Wastewater; D014874:Water Pollutants, Chemical
keywords: Activated sludge; D. magna; Ecotoxicological tests; P. putida; R. subcapitata; Textile effluent