Grantee Research Project Results
Palladium Catalyzed Reductions of Water Contaminants under Environmental Conditions
EPA Grant Number: R825421Title: Palladium Catalyzed Reductions of Water Contaminants under Environmental Conditions
Investigators: Reinhard, Martin
Institution: Stanford University
EPA Project Officer: Aja, Hayley
Project Period: November 1, 1996 through October 31, 1999 (Extended to October 31, 2001)
Project Amount: $366,667
RFA: Exploratory Research - Water Engineering (1996) RFA Text | Recipients Lists
Research Category: Water , Land and Waste Management , Safer Chemicals
Description:
This project aims to evaluate metal-catalyzed hydrogenation for the reductive treatment of contaminants in fluid waste streams. Many halogenated hydrocarbons, especially the chlorinated ethylenes, are rapidly dehalogenated by hydrogen gas in the presence of a palladium- or nickel-based catalyst. Some inorganic oxyanions such as nitrate may also be transformed into less toxic forms. A broad base of batch kinetic data will be obtained to evaluate the potential treatability of various specific compounds. Column tests will be conducted to determine: 1) the contact time requirements with commercial catalysts, 2) reactions occurring at the catalyst surface in natural waters and representative waste streams, and 3) the preferred reactor configuration. Emphasis will then be placed on determining the competing or inhibitory compounds that may be present and evaluating methods of circumventing interfering processes.
Publications and Presentations:
Publications have been submitted on this project: View all 9 publications for this projectJournal Articles:
Journal Articles have been submitted on this project: View all 4 journal articles for this projectSupplemental Keywords:
waste streams, reductive treatment, metal-catalyzed hydrogenation, palladium, treatabliity, contact time, reactor configuration, inhibitory compounds, circumventing interfering processes,, Scientific Discipline, Water, Ecology, Wastewater, Environmental Chemistry, Chemistry, Engineering, Chemistry, & Physics, metal catalysts, waste treatment, inhibitory compounds, hydrocarbon, hydrogenated hydrocarbon, chemical composition, chemical transport modeling, chemical kinetics, water treatment, reductive treatement, water contaminantsProgress and Final Reports:
The perspectives, information and conclusions conveyed in research project abstracts, progress reports, final reports, journal abstracts and journal publications convey the viewpoints of the principal investigator and may not represent the views and policies of ORD and EPA. Conclusions drawn by the principal investigators have not been reviewed by the Agency.