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Removal of HCH from contaminated subsurface by the technology based on iron reducing bacteria

Jiri Mikes1, Pavel Špaček2
1 TERAMED, s.r.o.
2 , CHEMCOMEX Praha, a.s.

O 13.8 in Czech-German exchange on environmental-, soil- and hydro(geo)logical issues

30.05.2014, 14:20-14:40, H18, NW II

Biogeochemical cycles are driven by miscellaneous groups of microorganisms. In technological view, these groups may be recognized according to their functional characteristic. Iron reducing bacteria (IRB) represents one of the most important microbial consortiums. Under natural conditions, these bacteria are responsible for iron and manganese cycles. Compounds of both elements will serve as a terminal electron acceptor if iron and manganese are in higher oxidizing number.  These microorganisms require a suitable form of reducing equivalent and carbon source as well. And in particular both mentioned aspects open a very powerful direction in the environmental technology development for the application in the subsurface. This contribution introduces the second phase of R&D project which deals with the clean-up biotechnology for chlorinated hydrocarbons removal based on metabolic capabilities of IRB. Especially above mentioned impact of reducing equivalent (source of electrons) plays an extraordinary effect in technological usage. Chlorinated hydrocarbons with less number of chlorine atoms represent an alternative source in contaminated subsurface. Biological process transforms them in to the form of less toxic products.  Basic principles of IRB metabolisms, particular forms of iron solution, and especially the first draw of the technical solution will be mentioned in this contribution. Finally, some field of application shows where these outputs may be successfully applied.

This project was founded by Eureka Program.



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Letzte Änderung 19.11.2013