Trichoderma viride Pers. ex Gray as biosorbent of heavy metals (Pb, Hg and Cd)
2002
Simonovicova, A. | Sevc, J. (Comenius Univ., Bratislava (Slovak Republic). Department of Soil Sciences)
We observed the biosorption of metals (Pb, Hg a Cd) by the mycelium of a microscopic fungi Trichoderma viride. The metals were added to the medium in soluble form (PbCl2, HgCl2, CdSO4) with concentrations of Pb1, Hg1, Cd1 = 200 ppm; Pb2, Hg2, Cd2 = 100 ppm; Pb3, Hg3, Cd3 = 50 ppm. They were added to Sabouraud medium, with the starting value of pH = 4.5+-0.05. The pH values of the medium increased by 3.7 to 4.29. The sorption of Pb varied between 50-60%. The smallest was the sorption of Hg from 1.4 to 7.22%. There is an unambiguous correlation between the content of metal applied to the medium and its content in the mycelium which is visible only with Cd, where the sorption varied between 64.56-100%. The results from the accumulation of tested metals by the species Trichoderma viride from the medium suggests the possibility to use them as natural biosorbents of metals in various natural systems
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