The Use of Lawn Grasses for Purification of Soil From Toxic Cr(VI)

Background. Environmental pollution with toxic compounds poses a danger to nature and humans. Various technologies for soil purification from metals are being developed. Objective. The work was aimed study the possibility of lawn grass using Cr(VI). Methods. Plant seeds (Festuca rubra L. 45%, Festuca arundinacea Schreb. 25%, Lolium perenne 20%, Poa pratensis 10%) were sown in container at 24 °C grown two months obtain lawn. K2CrO4 added (400 g) (variants: 1.0 g, No. 1 2.5 2) following parameters determined two, five ten days after Cr(VI) addition soil: content roots, aerial part, soil; coefficient reduction; total aerobic heterotrophic microorganisms (CFU/g). Results. In 2 adding roots accumulated more significant amounts than leaves (16.6 15 times 2). 5 days, an increase concentration plants detected. decreased by 45.8 13.57 variants 2, respectively. Inhibition growth CFU number control sample 7.2×108, experimental – 5×106 1×106, Conclusions. inhibited microorganisms. Lawn grasses composition successfully used extraction soil. A notable (13.8 9.3 times) reduction observed days. This progressed greatly as well (91.8 85.0 times). root system plants. Thus, selected can be bioremediation purify contaminated