Palladium Catalyzed Reductions of Water Contaminants under Environmental Conditions

EPA Grant Number: R825421
Title: Palladium Catalyzed Reductions of Water Contaminants under Environmental Conditions
Investigators: Reinhard, Martin
Institution: Stanford University
EPA Project Officer: Lasat, Mitch
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 , Engineering and Environmental Chemistry

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 20 publications for this project

Journal Articles:

Journal Articles have been submitted on this project: View all 5 journal articles for this project

Supplemental 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, Engineering, Chemistry, & Physics, waste treatment, metal catalysts, inhibitory compounds, hydrocarbon, hydrogenated hydrocarbon, chemical composition, chemical transport modeling, chemical kinetics, water treatment, water contaminants, reductive treatement

Progress and Final Reports:

  • 1997
  • 1998
  • 1999 Progress Report
  • 2000 Progress Report
  • Final Report