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P28: Removal of toxic metals and radionuclides by litotrophic microorganisms isolated from extreme environments, G. Dubinina

Title:

Dr

First Name:

Galina

Family Name:

Dubinina

Position:

Senior Scientist

Name of organization:

Institute of Microbiology, Russian Academy of Sciences

Address:

7/2 prospect 60-letiya Oktyabrya

Postcode:

117312

City:

Moscow

Country:

Russia

Telephone:

7 (095) 135 01 09

Fax:

7 (095) 135 65 30

E-mail:

gdubinina@mail.ru

Website:

Proposed Title

Removal of toxic metals and radionuclides by litotrophic microorganisms isolated from extreme environments.

Abstract

Removal of toxic metals and radionuclides by litotrophic microorganisms isolated from extreme environments. Toxic metals and radionuclides cause most significant environmental hazard. The aim of our project is to study the ability of chemotrophic and photorophic bacteria from different extreme environment to remove or immobilize toxic and heavy metals (Fe, Mn, Cr, Te) and radionuclides (Tc, Mo, Se) from industrial waste waters and environment. Microbial metal reduction results in the precipitation of a low valence, reduced form of the element, and has therefore been proposed as a strategy to treat contaminated waters. Laboratory unique collection (more than 300 strains, isolated from alkaline soda and hypersaline lakes, thermal springs, marine, fresh water reservoirs and waste waters) and new isolates will be tested for their ability to reduce or oxidize metals to insoluble or immobilized forms. The most efficient strains will be selected for further investigation. Our preliminary results show possibilities to apply some chemotophic and photoprophic bacteria for detoxification and purification of industrial wastes and environment from metal pollutants. Also, mechanisms of bacterial adaptation to extreme conditions will be studied. The final results of this project significantly extend our knowledge about ability of microorganisms to use metals and/or radionuclides as donors and acceptors electron in the natural and artificial extreme conditions.

A. Enterprises Corner

Enterprises looking for complementary partners in research arena and

Researchers offer their findings for technology transfer to enterprises

B. Research Corner

x

Research institutions looking for partners for joint research venture

Potentially interested for continuation of projects preparations on Tuesday afternoon 1 st July

Keywords

bioremediation, litotrophic microorganisms, heavy metals, radionuclides, waste

Received: 18/6/2003

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