Hexavalent Chromium (Cr (VI)) Removal by Live Mycelium of a Trichoderma harzianum Strain
1. Al-Ameen Arts Science and Commerce College, P.G. and Research Dept. of Microbiology and Biotechnology- Bangalore-560027
2. UPASI Tea Research Foundation, Tea Research Institute, Nirar Dam BPO, Valparai-642 127, Tamil Nadu, India
Molecular Soil Biology, 2013, Vol. 4, No. 1 doi: 10.5376/msb.2013.04.0001
Received: 20 Dec., 2012 Accepted: 09 Jan., 2013 Published: 17 Feb., 2013
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Preferred citation for this article:
Sarkar et al., 2012, Hexavalent Chromium (Cr (VI)) Removal by Live Mycelium of a Trichoderma harzianum Strain, Molecular Soil Biology, Vol.4, No.1 1-6 (doi: 10.5376/msb.2013.04.0001)
Response of Trichoderma harzianum strain to different chromium concentrations was investigated by poison food technique. It was noticed that, the mycelial growth was inhibited up to 94 % at 40 mg/L concentration followed by 30 mg/L (91%).The chromium (VI) biosorption ability of Trichoderma harzianum was tested in vitro. The organism was inoculated on Czapek Dox broth medium containing 30 mg/L of Cr (VI) salt. The metal residues were analyzed at different day's interval (4, 5, 6 and 7 days). The effect of different pH and temperature on metal removal was also investigated. Results indicated that, at 7th day the metal removal reached the maximum level (90.2%). Further incubation did not increase the metal uptake. A pH range of 4~5 and temperature of 30â„ƒ was optimum for Cr (VI) removal by T. harzianum in the present study.
Chromium; Trichoderma harzianum; Biosorption; Ph; Temperature