Microorganisms influence their surroundings in many ways and humans have utilized microbially catalyzed reactions for benefit for centuries.  Over the past few decades, microorganisms have been used for the control of contaminant transport in subsurface environments where many microbe mineral interactions occur. This presentation will discuss microbially influenced mineral formation and transformation as well as their influence on the fate of organic contaminants such as chlorinated aliphatics & 2,4,6-trinitrotoluene (TNT), heavy metals such as chromium, and radionuclides such as uranium & strontium. Both, batch and flow experiments have been performed, which monitor the net effect of microbe mineral interactions on the fate of these contaminants.  This presentation will place an emphasis on the relative importance of direct microbial (i.e. biotic) transformations, mineral-mediated (i.e. abiotic) transformations as well as other abiotic reactions and factors that might influencing the fate of organic and inorganic environmental contaminants.  Experiments will be summarized and placed in context of past and future engineered applications for the control of subsurface contaminants.

Microbe and mineral mediated transformation of heavy metals, radionuclides, and organic contaminants

247th National Meeting (2014)

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