title: Assessment of the efficacy of Aspergillus sp. EL-2 in textile waste water treatment.
abstract: Fungal biomass has the ability to decolorize a wide variety of dyes successfully through a number of mechanisms. A brown rot isolate, previously identified as Aspergillus sp. EL-2, was used in the aerobic treatment of textile waste water efficiently. In the current work, the treated waste water was tested chemically using more than one combined treatment. Microbial toxicity, phytotoxicity, genotoxicity and cytotoxicity were also studied to assess the toxicity level for each treatment. The obtained data suggest that the contribution of more than one mode of treatment is essential to ensure complete destruction of the by-products. The use of gamma irradiation (25 kGy) after the bioremediation step led to the decrease of the by-products of biodegradation as observed by visible spectrum and Fourier transfer infra red spectroscopy (FT-IR). The toxicity assessment presented variable results indicating the need for more than one toxicity test to confirm the presence or absence of hazardous compounds. Brown rot fungus could be used efficiently in the treatment of textile waste water without the risk of obtaining high carcinogenic or genotoxic compounds, especially if combined treatment is employed.
authors.affiliation: Microbiology Department, National Center for Radiation Research and Technology (NCRRT), Nasr City, Cairo, Egypt. ola_gomaa@hotmail.com
authors.forename: Ola M
authors.initials: OM
authors.lastname: Gomaa
authors.forename: Hussein Abd El
authors.initials: HA
authors.lastname: Kareem
authors.forename: Reham
authors.initials: R
authors.lastname: Fatahy
mesh_terms: D000818:Animals; D001230:Aspergillus / Q000187:drug effects / Q000378:metabolism*; D001673:Biodegradation, Environmental / Q000187:drug effects; D016923:Cell Death / Q000187:drug effects; D002869:Chromosome Aberrations / Q000187:drug effects; D003116:Color; D004926:Escherichia coli / Q000187:drug effects / Q000378:metabolism; D018525:Germination / Q000187:drug effects; D056945:Hep G2 Cells; D006801:Humans; D007220:Industrial Waste / Q000032:analysis*; D051379:Mice; D008940:Mitotic Index; D009153:Mutagens / Q000633:toxicity; D017550:Spectroscopy, Fourier Transform Infrared; D013784:Textiles / Q000382:microbiology*; D018675:Toxicity Tests; D029910:Trigonella / Q000187:drug effects / Q000254:growth & development / Q000378:metabolism; D014865:Waste Disposal, Fluid; D018508:Water Purification / Q000379:methods*
chemical_list: D007220:Industrial Waste; D009153:Mutagens