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Determination of Hydrolysis Rate for CCl4 under ambient groundwater conditions. (PNNL Scope #46431, Amonette's Fluor Hanford)


EMSL Project ID
16898

Abstract

We propose work that will provide critical data needed to determine the natural rate of hydrolysis for CCl4 (CT) in the groundwater at the Hanford Site. The experimental design includes a number of features to improve accuracy and provide a predictive capability including multiple temperatures for incubation, multiple starting concentrations, many replicate determinations, duplication of selected experiments in another laboratory, and testing in the presence and absence of sediment. This information will support fate and transport assessment of natural attenuation for chloromethane contaminants at Hanford. Due to the slow reaction rates expected, data will need to be collected over a period of years to enable accurate measurements at temperatures relevant to Hanford groundwater. Full details are given in attached preproposal.

Project Details

Project type
Exploratory Research
Start Date
2005-12-22
End Date
2007-06-07
Status
Closed

Team

Principal Investigator

James Amonette
Institution
Pacific Northwest National Laboratory

Team Members

Thomas Wietsma
Institution
Environmental Molecular Sciences Laboratory

Colleen Russell
Institution
Pacific Northwest National Laboratory

Odeta Qafoku
Institution
Environmental Molecular Sciences Laboratory

Related Publications

Amonette JE, O Qafoku, TW Wietsma, PM Jeffers, CK Russell, and MJ Truex. 2010. Abiotic Degradation Rates for Carbon Tetrachloride and Chloroform: Progress in FY2009. PNNL-19142, Pacific Northwest National Laboratory, Richland, WA. 42 pp.