Abstract
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 7 th 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 30℃ was optimum for Cr (VI) removal by T. harzianum in the present study.
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