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109 posts categorized "Research Highlights"

03/01/2013

Mantle Fluids in the Karakoram Fault

The Karakoram fault (KKF) in Tibet is a 1000 km long strike-slip fault separating the western Himalaya from the Tibetan Plateau.

Groundwater Uranium Plumes at Two DOE Sites

ESD scientists were part of a group that examined subsurface uranium (U) plumes at two U.S. Department of Energy sites (Hanford and Rifle) located near large river systems that are influenced by groundwater–river hydrologic interaction.

Thermodynamic Sorption Modeling for Radioactive Waste Disposal

Predicting the behavior of contaminants that may be released in surface and subsurface environments is a major challenge to environmental scientists worldwide.

Dynamic Displacement/ Dissolution of Supercritical CO2

A team of scientists (including ESD’s Quanlin Zhou) recently developed an experimental setup for conducting core-flood experiments of supercritical CO2 and water under pressures higher than 8.00 MPa and a temperature of 40°C.

Worker Safety in The Carbon Capture/Storage Industry

In a recently published paper, ESD’s Preston Jordan (and former ESD head Sally Benson) project worker safety likelihood for a mature carbon capture and storage (CCS) industry, using government and private analog industry data.

U Pathways in Acetate-Amended Sediments

In a recent article published by the NAS, a team of ESD investigators headed by ESD’s John Bargar present results from an in situ study of uranium redox transitions occurring in aquifer sediments under sulfate-reducing conditions.

02/12/2013

Janet Jansson and “Earth’s Dark Matter”

In an editorial in the most recent (Feb. 2013) edition of Nature, ESD’s Janet Jansson poses the following question: Can omics “provide insight into microbial ecology that cannot be achieved using traditional methods?”

02/01/2013

On modeling the potential impacts of CO2 sequestration on shallow groundwater: Transport of organics and co-injected H2S by supercritical CO2 to shallow aquifers

Proper site selection for CO2 geologic storage requires assessing the impact of potential leakage of CO2 from deep subsurface reservoirs to overlying drinking water aquifers

Functionalizing bacterial cell surfaces with a phage protein

Functionalization of bacterial cell surfaces has the potential to introduce new activities by chemical modification. ESD’s Harry Beller, Steve Singer, and others show that a bacteriophage–receptor complex can be used to functionalize the surface of two Gram-negative proteobacteria, Escherichia coli and Ralstonia eutropha with CdSe/ZnS nanoparticles.

Dissolution kinetics and mechanisms at dolomite-water interfaces: Effects of electrolyte-specific ionic strength

Elucidating dissolution kinetics and mechanisms at carbonate mineral–water interfaces is essential to many environmental and geochemical processes, including geologic CO2 sequestration in deep aquifers.