Scientists from the Perm National Research Polytechnic University (PNRPU) have proposed a new environmentally friendly method to purify water from manganese. socialbites.ca was informed about this by the press service of the scientific institution.
Manganese enters the aquatic environment as a result of natural processes and human activities. Its maximum allowable concentration is 0.1 mg/l. At higher levels the substance harms the growth of plants and can cause neurological, reproductive and respiratory diseases in humans.
Biotechnologist Olga Bakhireva and student Ksenia Kolykhmatova from Perm Polytechnic University have developed a biosorbent that removes manganese ions from water and reduces the concentration of the element to safe values.
“To create a biosorbent, we isolated a culture of microorganisms from contaminated soil, which we examined for sensitivity to manganese ions. Thus, the limits of crop resistance to high concentrations of pollutants were determined. Candidate of chemical sciences Olga Bakhireva told socialbites.ca: 5-200 mg/ It turned out to be resistant to the action of these ions in the concentration range of l.
Manganese filters created in PNIPU consist of layered mineral vermiculite treated with a special bacterial composition. Tests showed that microorganisms allowed the material to retain more manganese than when vermiculite was tested without bacteria.
The biosorbent obtained by scientists can become a promising method for the removal of manganese ions from the aquatic environment and can be used in technological schemes for complex purification of manganese-containing waters.
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