title: Water recycle as a must: decolorization of textile wastewaters by plant-associated fungi.
abstract: Textile dye effluents are among the most problematic pollutants because of their toxicity on several organisms and ecosystems. Low cost and ecocompatible bioremediation processes offer a promising alternative to the conventional and aspecific physico-chemical procedures adopted so far. Here, microorganisms resident on three real textile dyeing effluent were isolated, characterized, and tested for their decolorizing performances. Although able to survive on these real textile-dyeing wastewaters, they always showed a very low decolorizing activity. On the contrary, several plant-associated fungi (Bjerkandera adusta, Funalia trogii, Irpex lacteus, Pleurotus ostreatus, Trametes hirsuta, Trichoderma viride, and Aspergillus nidulans) were also assayed and demonstrated to be able both to survive and to decolorize to various extents the three effluents, used as such in liquid cultures. The decolorizing potential of these fungi was demonstrated to be influenced by nutrient availability and pH. Best performances were constantly obtained using B. adusta and A. nidulans, relying on two strongly different mechanisms for their decolorizing activities: degradation for B. adusta and biosorption for A. nidulans. Acute toxicity tests using Daphnia magna showed a substantial reduction in toxicity of the three textile dyeing effluents when treated with B. adusta and A. nidulans, as suggested by mass spectrometric analysis as well.
authors.affiliation: Dipartimento di Biotecnologie Agrarie, Laboratorio di Patologia Vegetale Molecolare, Università degli Studi di Firenze, Sesto Fiorentino (Firenze), Italy.
authors.forename: Stefania
authors.initials: S
authors.lastname: Tegli
authors.forename: Matteo
authors.initials: M
authors.lastname: Cerboneschi
authors.forename: Massimo
authors.initials: M
authors.lastname: Corsi
authors.forename: Marco
authors.initials: M
authors.lastname: Bonnanni
authors.forename: Roberto
authors.initials: R
authors.lastname: Bianchini
mesh_terms: D000332:Aerobiosis; D001233:Aspergillus nidulans / Q000378:metabolism; D001673:Biodegradation, Environmental; D019149:Bioreactors; D003116:Color; D004396:Coloring Agents / Q000378:metabolism* / Q000633:toxicity; D005658:Fungi / Q000378:metabolism*; D010944:Plants / Q000382:microbiology*; D020072:Polyporales / Q000378:metabolism; D013784:Textiles; D023382:Toxicity Tests, Acute; D062065:Wastewater / Q000382:microbiology*; D014874:Water Pollutants, Chemical / Q000378:metabolism* / Q000633:toxicity
chemical_list: D004396:Coloring Agents; D062065:Wastewater; D014874:Water Pollutants, Chemical
keywords: Biodegradation; Bioremediation; Biosorption; Plant-associated fungi; Textile dyeing decolorization