Ravi Kukkadapu

The Role of Microenvironments and Physicochemical Subsurface Components on Field Scale Biogeochemistry and Contaminant Mobility

Lead Institution

Pacific Northwest National Laboratory

Principal Investigator

James McKinley

Project type

Exploratory Research

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…

Extracellular Research Thrust for EMSL SSA

Lead Institution

Pacific Northwest National Laboratory

Principal Investigator

Kirsten Hofmockel

This project will develop a conceptual framework that defines the biotic and abiotic mechanisms regulating the persistence of mineral associated organic matter (OM). The specific goals are to…

Characterization of novel arsenic-iron precipitates formed during biological iron reduction

Lead Institution

Colorado State University

Principal Investigator

Thomas Borch

Project type

Exploratory Research

Arsenic (As) is a priority pollutant, the fate of which is in part controlled by reactions with ferrous iron. Ferrous iron is capable of mediating solid phase transformations of soil and sediment…

Nanoscale Investigation of Microbial Role in Promoting the Smectite to Illite Transformation

Lead Institution

Miami University

Principal Investigator

Hailiang Dong

Project type

Exploratory Research

Smectite-illite interstratified clay minerals are ubiquitous in sedimentary basins. The smectite to illite transformation is linked to the maturation, migration and trapping of hydrocarbons, the…

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…

Fe-Mössbauer Spectroscopic Studies of Fe containing Materials

Lead Institution

Environmental Molecular Sciences Laboratory

Principal Investigator

Ravi Kukkadapu

Fe compounds play a critical role in soil organic matter transformation, in removal of metal contaminates from soils, in redox chemistry of catalysts, etc. Identification of the Fe species by…

EMSL Science Overview

Ravi Kukkadapu

Projects

The Role of Microenvironments and Physicochemical Subsurface Components on Field Scale Biogeochemistry and Contaminant Mobility

Extracellular Research Thrust for EMSL SSA

Characterization of novel arsenic-iron precipitates formed during biological iron reduction

Nanoscale Investigation of Microbial Role in Promoting the Smectite to Illite Transformation

Role of Microenvironments and Transition Zones in Subsurface Reactive Contaminant Transport

Fe-Mössbauer Spectroscopic Studies of Fe containing Materials