Premium
Water recycle as a must: decolorization of textile wastewaters by plant‐associated fungi
Author(s) -
Tegli Stefania,
Cerboneschi Matteo,
Corsi Massimo,
Bonnanni Marco,
Bianchini Roberto
Publication year - 2014
Publication title -
journal of basic microbiology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.58
H-Index - 54
eISSN - 1521-4028
pISSN - 0233-111X
DOI - 10.1002/jobm.201200401
Subject(s) - effluent , bioremediation , pulp and paper industry , aspergillus nidulans , pleurotus ostreatus , trichoderma viride , chemistry , pollutant , dyeing , environmental chemistry , biology , food science , environmental science , environmental engineering , contamination , organic chemistry , biochemistry , ecology , mushroom , gene , mutant , engineering
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.