Bioremediation of chromium polluted water by fungal mycelia
2003
Shuja, A. | Mughal, M.S. | Jahan, N.,Government Coll. Univ., Lahore(Pakistan). Zoology Dept.
Heavy metal bio sorption potentials of two fungi Aspergillus andPenicillium mycelia were determined. Bio sorption studies were performed forCr (VI) by using potassium dichromate (K2Cr2O7) as toxicant. Variousconcentrations of chromium such as 1 ppm, 3 ppm, 6 pmm, and 9 ppm wereprepared. Fungal biomass comprising Aspergillus and Penicillium mycelia werecultured on malt extract agar medium (MEA). 5% and 6% fungal biomass weremixed with metal solutions. These suspensions were shaken at differentincubation times like: 0,1,2,4 and 6 hours. The mycelia were removed from thesuspension by centrifugation at 14,000 rpm for 10 minutes. The supernatantwas analyzed for its Cr (VI) content spectrophotometrically at 540 nm. Theresults at each hour were compared with that of control. The high biosorption significance was achieved at 4 and 6 hours contact time with 6% offungal biomass. The result was concentration and time dependent. The dataobtained was analyzed by using analysis of variance (ANOVA).
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