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Rizlan Bernier-Latmani

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Publications associées (126)

Impact of microbial Mn oxidation on the remobilization of bioreduced U(IV)

Rizlan Bernier-Latmani, Kelly Lee Plathe

Effects of Mn redox cycling on the stability of bioreduced U(IV) are evaluated here. U(VI) can be biologically reduced to less soluble U(IV) species and the stimulation of biological activity to that end is a salient remediation strategy; however, the stab ...

American Chemical Society2013

X-rays shine light on environmental clean-up: Using synchrotron-based techniques for bioremediation

Rizlan Bernier-Latmani

Elsevier2013

Quantitative separation of monomeric U(IV) from UO2 in products of U(VI) reduction

Elena Suvorova Buffat, Rizlan Bernier-Latmani, Harish Veeramani, Daniel Scott Alessi, Benjamin Uster

The reduction of soluble hexavalent uranium to tetravalent uranium can be catalyzed by bacteria and minerals. The end-product of this reduction is often the mineral uraninite, which was long assumed to be the only product of U(VI) reduction. However, recen ...

2012

Oxidative Dissolution of Biogenic Uraninite in Groundwater at Old Rifle, CO (vol 45, pg 8748, 2011)

Elena Suvorova Buffat, Rizlan Bernier-Latmani, Harish Veeramani

Amer Chemical Soc2012

Complete genome sequence of the sulfate-reducing Firmicute Desulfotomaculum ruminis type strain (DLT)

Rizlan Bernier-Latmani

Desulfotomaculum ruminis Campbell and Postgate 1965 is a member of the large genus Desulfotomaculum which contains 30 species and is contained in the family Peptococcaceae. This species is of interest because it represents one of the few sulfate-reducing b ...

Genomic Stand Consort2012

Direct and Indirect Processes Leading to Uranium(IV) Oxidation

Rizlan Bernier-Latmani

Microbial activity has shown to catalyze the reduction of the soluble and mobile contaminant uranium (VI) to the sparingly soluble, nanoparticulate mineral uraninite (UO2). Many of the oxidants can be formed biologically, and these various redox-active com ...

wiley2011

Products of abiotic U(VI) reduction by biogenic magnetite and vivianite

Elena Suvorova Buffat, Rizlan Bernier-Latmani, Harish Veeramani, Jonathan Sharp, Daniel Scott Alessi

Reductive immobilization of uranium by the stimulation of dissimilatory metal-reducing bacteria (DMRB) has been investigated as a remediation strategy for subsurface U(VI) contamination. In those environments, DMRB may utilize a variety of electron accepto ...

Elsevier2011

Uranium speciation and stability after reductive immobilization in sediments

Elena Suvorova Buffat, Rizlan Bernier-Latmani, Harish Veeramani, Jonathan Sharp

It has generally been assumed that the bioreduction of hexavalent uranium in groundwater systems will result in the precipitation of immobile uraninite (UO2). In order to explore the form and stability of uranium immobilized under these conditions, we intr ...

Elsevier2011

Role of proteins in the controlling selenium nanoparticle size

Elena Suvorova Buffat, Rizlan Bernier-Latmani, Jan Dobias

This work investigates the potential for harnessing the association of bacterial proteins to biogenic selenium nanoparticles (SeNPs) to control the size distribution and the morphology of the resultant SeNPs. We conducted a proteomic study and compared pro ...

Institute of Physics2011

The response of Desulfotomaculum reducens MI-1 to U(VI) exposure: a transcriptomic study

Rizlan Bernier-Latmani, Elena Cristina Dalla Vecchia

Desulfotomaculum reducens is the first Gram-positive sulfate- and metal-reducing bacterium for which the transcriptomic response to uranium exposure has been evaluated. The genes upregulated during fermentative growth in the presence of U(VI) as compared t ...

Taylor & Francis2011

Speciation-dependent kinetics of uranium(VI) bioreduction

Rizlan Bernier-Latmani, Harish Veeramani

The kinetics of uranium(VI) reduction by Shewanella oneidensis strain MR-1 was studied for varied pH and concentrations of dissolved inorganic carbon (DIC) and calcium. These are key variables affecting U(VI) speciation in aqueous systems. For all conditio ...

Taylor & Francis2011

The response of Shewanella oneidensis MR-1 to Cr(III) toxicity differs from that to Cr(VI)

Pirmin Borer, Rizlan Bernier-Latmani, Dorothy Lundquist Parker

Frontiers Media SA2011

Oxidative dissolution of biogenic uraninite in groundwater at Old Rifle, CO

Elena Suvorova Buffat, Rizlan Bernier-Latmani, Harish Veeramani

Reductive bioremediation is currently being explored as a possible strategy for uranium-contaminated aquifers such as the Old Rifle site (Colorado). The stability of U(IV) phases under oxidizing conditions is key to the performance of this procedure. An in ...

2011

The genome of the Gram-positive, metal- and sulfate-reducing bacterium Desulfotomaculum reducens strain MI-1

Thomas Junier, Rizlan Bernier-Latmani, Nicholas Wigginton

P>Spore-forming, Gram-positive sulfate-reducing bacteria (SRB) represent a group of SRB that dominates the deep subsurface as well as niches in which resistance to oxygen and dessication is an advantage. Desulfotomaculum reducens strain MI-1 is one of the ...

Wiley-Blackwell2010

Speciation of naturally-accumulated uranium in an organic-rich soil of an alpine region (Switzerland)

Rizlan Bernier-Latmani

Elsevier2010

Binding of silver nanoparticles to bacterial proteins depends on surface modifications and inhibits enzymatic activity

Alexandre de Titta, Rizlan Bernier-Latmani, Jan Dobias, Nicholas Wigginton

2010

Non-uraninite products of microbial U(VI) reduction

Elena Suvorova Buffat, Rizlan Bernier-Latmani, Harish Veeramani, Elena Cristina Dalla Vecchia, Jonathan Sharp, Nicholas Wigginton

A promising remediation approach to mitigate subsurface uranium contamination is the stimulation of indigenous bacteria to reduce mobile U(VI) to sparingly soluble U(IV). The product of microbial uranium reduction is often reported as the mineral uraninite ...

2010

U(VI) reduction by spores of Clostridium acetobutylicum

Elena Suvorova Buffat, Rizlan Bernier-Latmani, Harish Veeramani, Elena Cristina Dalla Vecchia, Nicholas Wigginton

Vegetative cells of Clostridium acetobutylicum are known to reduce hexavalent uranium (U(VI)). We investigated the ability of spores of this organism to drive the same reaction. We found that spores were able to remove U(VI) from solution when H, was provi ...

Elsevier2010

The effect of competing electron acceptors on U(VI) reduction by Desulfotomaculum reducens

Elena Suvorova Buffat, Rizlan Bernier-Latmani

Taylor & Francis2010

U(VI) reduction by Desulfotomaculum reducens

Elena Suvorova Buffat, Rizlan Bernier-Latmani, Manon Frutschi, Elena Cristina Dalla Vecchia, Jonathan Sharp, Nicholas Wigginton

2009

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