Kevin Rosso

Building a Predictive Understanding of Particle-Based Mineral Growth

Lead Institution

Pacific Northwest National Laboratory

Principal Investigator

James De Yoreo

Project type

Large-Scale EMSL Research

Traditional models of mineral formation through monomer-by-monomer addition have been challenged by recent evidence for crystallization through the addition of "particles," ranging from…

The Reduction of Uranyl and Chromate to Insoluble Species by Green Rust and Other Ferrous Hydroxides Surfaces

Lead Institution

State University of New York at Stony Brook

Principal Investigator

Martin Schoonen

Project type

Large-Scale EMSL Research

Electron transfer reactions play an important role in determining of the fate of many environmental contaminants. Reduction from high-oxidation states (+5/+6), where the metal is stabilized in…

Linking Microscopic to Macroscopic Adsorption/Desorption Behavior for Uranium on Environmental Materials

Lead Institution

Pacific Northwest National Laboratory

Principal Investigator

Kevin Rosso

Project type

Large-Scale EMSL Research

This Science Theme proposal requests EMSL access for a subtask on an existing funded project at PNNL. The task is focused on determination of molecular-scale adsorption, desorption, and…

Coupled Surface and Solid-State Charge and Ion Transport Dynamics at Mineral/Water Interfaces: Redox Transformation of the Iron Oxides

Lead Institution

Pacific Northwest National Laboratory

Principal Investigator

Kevin Rosso

Project type

Large-Scale EMSL Research

This EMSL user proposal requests a continuation of EMSL access for a BES Geosciences supported project led by Dr. Rosso at PNNL. The past three years of research under this BES project we have been…

The Transformation of Tetrahedral to Octahedral Coordination in Anions of Interest in High-Level Tank Waste

Lead Institution

Pacific Northwest National Laboratory

Principal Investigator

Jian-zhi Hu

Project type

Exploratory Research

We propose to use nuclear magnetic resonance (NMR), Raman and Fourier transform-infrared (FT-IR) spectroscopy in combination with computational modeling to study the conversion of soluble tetrahedral…

Thrust Area #2: Molecular modeling of electron transfer in Fe(III) oxides

Lead Institution

Pacific Northwest National Laboratory

Principal Investigator

Kevin Rosso

Project type

Grand Challenge

Molecular modeling and simulation studies in combination with electron transfer theory calculations will be carried out to characterize the cytochrome mediated electron transfer process across the…

Role of Microenvironments and Transition Zones in Subsurface Reactive Contaminant Transport

Lead Institution

Pacific Northwest National Laboratory

Principal Investigator

James McKinley

Project type

Exploratory Research

The PNNL Scientific Focus Area (SFA) will resolve critical Hanford and basic subsurface science issues through integrated, multi-disciplinary, science-theme focused research on the role of…

Multiscale processes of heteroepitaxial nucleation and growth at mineral-water interfaces

Lead Institution

Pacific Northwest National Laboratory

Principal Investigator

Sebastien Kerisit

Project type

Large-Scale EMSL Research

The goal of the proposed research is to elucidate the mechanisms and quantify the rates of heteroepitaxial nucleation and growth at mineral-water interfaces. Despite several examples of heteroepitaxy…

Heteroepitaxial nucleation and growth of complex coatings at mineral/water interfaces

Lead Institution

Pacific Northwest National Laboratory

Principal Investigator

Sebastien Kerisit

All realistic mineral surfaces in natural waters can be expected to be coated, and their reactive properties influenced by the presence of coatings. Heteroepitaxial growth is the templated growth of…

Electronic structure determination on mineral surfaces

Lead Institution

University of Michigan

Principal Investigator

Udo Becker

Project type

Exploratory Research

Periodic and cluster electronic structure calculations will be jointly performed on pyrite and galena surfaces to elucidate the energetics of indirect interactions between adsorbates and surface…

Exploring the processes that control uranyl reduction by magnetite and the growth of nanoparticulate surface precipitates by X-ray scattering and X-ray absorption spectroscopy

Lead Institution

Lawrence Berkeley National Laboratory

Principal Investigator

Glenn Waychunas

Project type

Exploratory Research

Uranium (U) has been released into the environment through mining operations, nuclear testing, and accidental spills, and is a contaminant in soils, sediments and groundwater at 70% of the Department…

Role of Microenvironments and Transition Zones in Subsurface Reactive Contaminant Transport

Lead Institution

Pacific Northwest National Laboratory

Principal Investigator

James McKinley

This is a renewal proposal for a previous collaborative effort between the PNNL Scientific Focus Area (SFA) and EMSL. The research proposed will resolve critical Hanford and basic subsurface science…

The Transformation of Tetrahedral to Octahedral Coordination in Anions of Interest in High-Level Tank Waste

Lead Institution

Pacific Northwest National Laboratory

Principal Investigator

Jian-zhi Hu

Project type

Large-Scale EMSL Research

We propose to use nuclear magnetic resonance (NMR), Raman and Fourier transform-infrared (FT-IR) spectroscopy in combination with computational modeling to study the conversion of soluble tetrahedral…

Ecophysiological Investigation of Cyanobacteria using Controlled Cultivation

Lead Institution

J. Craig Venter Institute

Principal Investigator

Yuri Gorby

Project type

Grand Challenge

This project targets the development and operation of a fully instrumented photobioreactor that will serve to cultivate Cyanobacteria under well defined and controlled conditions. This capability…

(gc3563)Molecular Computational Studies In Environmental Chemistry, Geochemistry, and Biogeochemistry

Lead Institution

Pacific Northwest National Laboratory

Principal Investigator

Eric Bylaska

Project type

Capability Research

Addressing the overwhelming environmental cleanup problems facing the Department of Energy?s nuclear production sites as well as other polluted sites in the nation is hampered by a lack of knowledge…

The Role of Interfacial Water on Mineral Transformations in Wet Supercritical CO2

Lead Institution

Washington State University

Principal Investigator

Andrew Felmy

Project type

Large-Scale EMSL Research

We propose a comprehensive experimental and theoretical investigation of the molecular mechanisms governing the role of interfacial water in the reactivity of mineral phases in supercritical carbon…

Implications of U(IV)-silicate core-shell colloids for radionuclide transport

Lead Institution

University of Manchester

Principal Investigator

Samuel Shaw

Project type

Large-Scale EMSL Research

Here we will use a range of techniques to advance fundamental and predictive understanding of uranium colloids in the subsurface environment. Recent work has highlighted that U(IV)-silicate colloids…

EMSL Science Overview

Kevin Rosso

Projects

Building a Predictive Understanding of Particle-Based Mineral Growth

The Reduction of Uranyl and Chromate to Insoluble Species by Green Rust and Other Ferrous Hydroxides Surfaces

Linking Microscopic to Macroscopic Adsorption/Desorption Behavior for Uranium on Environmental Materials

Coupled Surface and Solid-State Charge and Ion Transport Dynamics at Mineral/Water Interfaces: Redox Transformation of the Iron Oxides

The Transformation of Tetrahedral to Octahedral Coordination in Anions of Interest in High-Level Tank Waste

Thrust Area #2: Molecular modeling of electron transfer in Fe(III) oxides

Role of Microenvironments and Transition Zones in Subsurface Reactive Contaminant Transport

Multiscale processes of heteroepitaxial nucleation and growth at mineral-water interfaces

Heteroepitaxial nucleation and growth of complex coatings at mineral/water interfaces

Electronic structure determination on mineral surfaces

Exploring the processes that control uranyl reduction by magnetite and the growth of nanoparticulate surface precipitates by X-ray scattering and X-ray absorption spectroscopy

Role of Microenvironments and Transition Zones in Subsurface Reactive Contaminant Transport

The Transformation of Tetrahedral to Octahedral Coordination in Anions of Interest in High-Level Tank Waste

Ecophysiological Investigation of Cyanobacteria using Controlled Cultivation

(gc3563)Molecular Computational Studies In Environmental Chemistry, Geochemistry, and Biogeochemistry

The Role of Interfacial Water on Mineral Transformations in Wet Supercritical CO2

Implications of U(IV)-silicate core-shell colloids for radionuclide transport