Geobacter uranium bioremediation 2012 pdf

Acetate amendment at uranium contaminated sites in rifle, co. At the rifle site, for example, acetateoxidizing dissimilatory iron reducing bacteria i. Performance indicators for uranium bioremediation in the. Geobacter species may be important agents in the bioremediation of organic and metal. Conceptual illustration of the process of uranium bioremediation after williams et al. Geobacter is the type and sole genus in the family geobacteraceae, one of two families in the order desulfuromonadales table 1. A reactive transport benchmark problem set has been developed based on in situ uranium bioimmobilization experiments that have been. This particular model utilizes the genomescale metabolic model. Proteogenomic monitoring of geobacter physiology during stimulated uranium bioremediation article pdf available in applied and environmental microbiology 7520. Previous studies of acetatepromoted bioremediation of uraniumcontaminated aquifers focused on geobacter because no other. In situ field evidence has been provided in support of the effectiveness of subsurface geobacter species in the removal of uranium in contaminated groundwater. In contrast, uranium reduction depended on the expression of geobacter conductive pili and. March 16, 2012 integrative analysis of geobacter spp. The biogeochemistry and bioremediation of uranium and.

Pdf proteogenomic monitoring of geobacter physiology. These findings are significant, as most tetravalent actinides are acquiescent to bioremediation due to their high ligandcomplexing abilities. The groundwater in some areas of the site is therefore characterised by low ph, high nitrate and uvi contamination, posing difficult challenges for in situ bioremediation. Biofilms as living catalysts in continuous chemical syntheses. Geobacter was found to be the first organism with the ability to oxidize organic compounds and metals, including iron, radioactive metals, and petroleum compounds into environmentally benign carbon dioxide while using iron oxide. The biogeochemistry and bioremediation of uranium and other. Potential for methanosarcina to contribute to uranium reduction. Enhanced uranium immobilization and reduction by geobacter.

A uranium bioremediation reactive transport benchmark springerlink. The interesting finding for met applications was that geobacter genus had been abundantly detected and enriched in sites where uranium bioremediation was implemented anderson et al. Rosanna margalef marti, microbiology degree, may 2014. One of the challenges associated with bioremediation is the decay in geobacter abundance, which has been attributed to the depletion of bio. Bioremediation of uranium via geobacter spp seyedeh golchereh mirlahiji 1, khosro eisazadeh2 1,2 department of microbiology, faculty of basic sciences, islamic azad university lahijan branch, iran abstract the in situ stimulated of fe iii oxide reduction by geobacter bacteria tend towards the pollutant acceleration of u vi from. Mahadevan derek lovley, university of massachusetts amherst. It reduces metals including uranium with acetate and other organic acids serving as the electron donor. Stimulating the microbial reduction of uvi could stop the spread of uranium contamination in the subsurface. Additionally geobacter kinds can directly transfer electron to an electrode motivating their use in microbial fuel cells liang et al, 2012. Evidence of geobacterassociated phage in a uranium. The results in this field study demonstrate that bioremediation of uranium from contaminated groundwater by geobacter is feasible 1. But once the nitrate runs out, the uranium reduction only goes in one direction. Attached geobacter were assumed to be the sole reducer of feiii and planktonic geobacter is assumed to be the sole reducer of uranium zhao et al. Uranium bioreduction has been proposed as a bioremediation.