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Zheming Wang

Institution
Pacific Northwest National Laboratory

Projects

Influence of Speciation on the Transport of U(VI) through Hanford Sediments

Lead Institution
Oak Ridge National Laboratory
Principal Investigator
Melanie Mayes
Project type
Exploratory Research
Uranium(VI) in the subsurface at the Department of Energy's (DOE) Hanford site poses a significant risk to the quality of the Columbia River and to future populations. Coupled hydrological and…

Chemically-selective Sensor Film Characterization

Lead Institution
Pacific Northwest National Laboratory
Principal Investigator
Zheming Wang
Project type
Exploratory Research
A new film material comprised of quaternized poly(4-vinylpyridine) cross-linked with 1,10-diiododecane (herein QPVP) has been developed for possible use in the spectroelectrochemical sensor for…

Microstructures and Their Stability of Ion-implanted Energy and Storage Materials

Lead Institution
Pacific Northwest National Laboratory
Principal Investigator
Weilin Jiang
Project type
Large-Scale EMSL Research
Two parallel studies, respectively funded by Office of Basic Energy Sciences and Office of Nuclear Energy, U.S. Department of Energy, will be performed under this user proposal. The objectives of the…

Visualizing Uranium Atom Exchange in UO2 Driven by Biogeochemical Processes

Lead Institution
Washington University in St. Louis
Principal Investigator
Daniel Giammar
Project type
Large-Scale EMSL Research
Redox-driven recrystallization of metal oxides is an exciting environmental phenomenon that can influence biogeochemical cycles of both nutrients and contaminants. This phenomena occurs in systems…

Characterization of Pure and Doped ZnO Nanoclusters

Lead Institution
University of Idaho
Principal Investigator
JiJi Antony
Project type
Exploratory Research
ZnO is a wide-band gap semiconductor (3.3 eV) that has attracted tremendous interest as blue light emitting spintronic material. ZnO particles when doped with transition metals can develop properties…

Advances in Understanding Electron Transfer Kinetics at Environmental Interfaces

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 BER funded Environmental Molecular Sciences Institute (EMSI) project led by Dr. Rosso at PNNL. This project constitutes the PNNL…

Microscopic Mass Transfer on U(VI) and Tc(VIII) in Subsurface sediments

Lead Institution
Pacific Northwest National Laboratory
Principal Investigator
Chongxuan Liu
Project type
Limited Scope
This project will investigate microscopic mass transfer process and its influence on and coupling with geochemical and biogeochemical reactions in subsurface sediments. The research will focus on…

Characterization of Synthetic Mixed Valence U Compounds

Lead Institution
The George Washington University
Principal Investigator
Christopher Cahill
Project type
Exploratory Research
The efforts proposed herein will explore the synthetic reaction conditions necessary to produce and stabilize pentavalent uranium oxide species under hydrothermal conditions. U(V) is a fleeting…

Microscopic Mass Transfer of U and Tc in Subsurface Sediments

Lead Institution
Pacific Northwest National Laboratory
Principal Investigator
Chongxuan Liu
Project type
Exploratory Research
This project will investigate microscopic mass transfer process and its influence on and coupling with geochemical and biogeochemical reactions in subsurface sediments. The research will focus on…

Remediation & Closure Science Project/ Subsurface Science Tasks (Zachara/Freshly, EM-closure, PNNL Scope #47040). [was aka S & T Road Mapping for Needs From All Sources (PNNL Scope #30998)].

Lead Institution
Pacific Northwest National Laboratory
Principal Investigator
John Zachara
Project type
Exploratory Research
Hanford Remediation and Closure Science Project The Hanford Site Groundwater Protection Program, formerly the Groundwater/ Vadose Zone Integration Project, was established in 1997 to develop the…

300 Area Post-Treatment Uranium Solubility

Lead Institution
Pacific Northwest National Laboratory
Principal Investigator
Zheming Wang
The objective of this study is to investigate the mobility of uranium after reaction of contaminated sediments with phosphate solutions injected at the 300 Area. Boreholes samples that were collected…

Zero Emission Research & Technology (ZERT) CO2 Sequestration Leakage Evaluation Task: Parameterization of Leakage from Geologically Sequestered CO2 (PNNL Scope # 46379).

Lead Institution
Pacific Northwest National Laboratory
Principal Investigator
Christopher Thompson
Project type
Exploratory Research
Understanding, characterizing, and ultimately quantifying leakage rates of geologically sequestered CO2 through the confining layers (caprock) is critical to site monitoring and verification (SMV),…

The Organic Surfactant Pool on Secondary Organic Aerosol Particles

Lead Institution
Northwestern University
Principal Investigator
Franz Geiger
Project type
Large-Scale EMSL Research
Secondary organic aerosol (SOA) particles particles rank among the least understood atmospheric constituents in the climate system. Key questions concern their poorly quantified roles in cloud…