Abstract
The ability to sorb heavy metals from aqueous solutions by bacteria degrading chlorophenoxy acids isolated from the soils of the industrial zone of Ufa was studied. Fe(II) ions turned out to be the most accessible to bacteria – they were accumulated by four strains, namely: Stenotrophomonas maltophilia 33D, Enterobacter sp. 38P, Raoultella planticola 36D and Achromobacter spanius 36P. With the greatest efficiency of more than 70%, Pb(II) and Fe(II) ions were sorbed from aqueous solutions by the cells of strains R. planticola 36D and S. maltophilia 33D, respectively. Pb(II) and Cu(II) ions were sorbed with an efficiency of more than 50% by R. planticola 33 4CPA and R. planticola 36D cultures, respectively. Thus, strain 36D not only accumulated all the studied ions from solutions, but also did this with high efficiency in the case of Pb(II) and Cu(II). The discovered properties indicate the fundamental possibility of using natural bacteria to develop technologies for remediation of the environment from heavy metal ions.
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