Thermodynamic prognosis of the efficiency of toxic metals extraction from solution by microorganisms and their genetic potential

  • V. M. Hovorukha
  • O. B. Tashyrev
DOI: https://doi.org/10.7124/FEEO.v23.1041

Abstract

Aim. Thermodynamic justification of pathways of microbial interaction with metals and development of theoretical foundations of novel biotechnologies for purification of industrial waste water from environmentally hazardous metals-oxidizers (CrО42-, MoО42-, WО42-). Methods. The fields of stability of metal compounds in aqueous solutions in the coordinates of pH-Eh were calculated using classic Pourbaix diagrams. The effectiveness of metals extraction from solutions was evaluated according to Gibbs free energy. Results. On the base of thermodynamic calculations conditions and efficiency of metals extraction by microorganisms was shown. Microbial reduction of CrО42- to insoluble Cr(III) hydroxide was the most effective. Additional carbon and energy sources are required for effective molybdate reduction. Extraction of tungstate can not be carried out by microorganisms. Conclusions. Thermodynamic prognosis is effective method for developing novel environmental biotechnologies for purification of environmentally hazardous metal-containing wastewater and simultaneous treatment of organic waste.

Keywords: thermodynamic prognosis, microbial interaction of with metals, metals extraction,

purification of metal-containing wastewater, environmental biotechnologies.

References

Lloyd J.R., Lovley D.R. Microbial detoxification of metals and radionuclides. Environmental biotechnology. 2001. Vol. 12 (3). P. 248–253. doi: 10.1016/S0958-1669(00)00207-X.

Zafar S., Aqil F., Ahmad I. Metal tolerance and biosorption potential of filamentous fungi isolated from metal contaminated agricultural soil. Bioresource Technology. 2007. Vol. 98 (13). P. 2557–2561. doi: 10.1016/j.biortech.2006.09.051.

Cheung K.H., Gu J.-D. Mechanism of hexavalent chromium detoxification by microorganisms and bioremediation application potential: A review. International Biodeterioration & Biodegradation. 2007. Vol. 59 (1). P. 8–15. doi: 10.1016/j.ibiod.2006.05.002.

Congeevaram S., Dhanarani S., Park J., Dexilin M., Thamaraiselvi K. Biosorption of chromium and nickel by heavy metal resistant fungal and bacterial isolates. Journal of Hazardous Materials. 2007. Vol. 146 (1–2). P. 270–277. doi: 10.1016/j.jhazmat.2006.12.017.

Sturm G., Dolch K., Richter K., Rautenberg M., Gescher J. Metal Reducers and Reduction Targets. A Short Survey About the Distribution of Dissimilatory Metal Reducers and the Multitude of Terminal Electron Acceptors. Microbial Metal Respiration. 2013. P. 129–159. doi: 10.1007/978-3-642-32867-1_6.

Tashyrev O.B., Galinker E.V., Andreyuk E.I. Thermodynamic prognosis of redox-interaction of microorganisms with metals-oxidizers. Reports of the National Academy of Sciences of Ukraine. 2008. P. 166–172. (In Russian).

Pourbaix M. Atlas of electrochemical equilibria in aqueous solutions. Oxford: Pergamon Press, 1963. 320 p.

Shlegel G. General microbiology. M.: Mir, 1987. 567 p. (In Russian).

Lehninger A., Nelson D., Cox M. Principles of Biochemistry, 2nd ed. New York: Worth, 1993.

Lurie Y.Y. Handbook of Analytical Chemistry. M.: Himiya, 1979. 480 p. (In Russian).

Kondratieva E.N. Role of microorganisms in the cycle of gases in nature. M.: Nauka, 1979. 288 p. (In Russian).

Tashyreva A., Tashyrev O., Prytula I. The novel comprehensive approach for non-food agricultural and landfill biomass microbial fermentation and biogas production. Biotechnology and Plant Breeding Perspectives. 2014. P. 347–356.

Lloyd J.R. Microbial reduction of metals and radionuclides. FEMS Microbiology Reviews. 2003. Vol. 27. P. 411–425.