US EPA

Fenton-Like Reductions for the Enhanced Desorption and Degradation of Biorefractory Contaminants

EPA Grant Number: R826163
Title: Fenton-Like Reductions for the Enhanced Desorption and Degradation of Biorefractory Contaminants
Investigators: Watts, Richard J. , Hess, Thomas F. , Teel, Amy L.
Institution: Washington State University , University of Idaho
Current Institution: Washington State University
EPA Project Officer: Lasat, Mitch
Project Period: February 1, 1998 through January 31, 2001
Project Amount: $307,481
RFA: Exploratory Research - Environmental Engineering (1997) RFA Text |  Recipients Lists
Research Category: Engineering and Environmental Chemistry , Land and Waste Management

Description:

The objective of the proposed research is to investigate occurrence, reactivity, and kinetics of Fenton-like reductions and determine the role of these reductions in enhancing the degradation of sorbed contaminants.

Approach:

Probe compounds that react with reductants, but not with hydroxyl radicals, will be used to investigate a range of conditions that generate Fenton's reductants. Reductant scavengers, such as chloroform, will also be used to confirm the existence of reductant species. Oxygen scavengers and process optimization will be evaluated for their ability to increase the effectiveness and stoichiometric efficiency of the Fenton's process, including lowering hydrogen peroxide levels required to promote the degradation of sorbed contaminants. Probe compounds and scavengers will be used to investigate the desorption of sorbed contaminants by reductants or hydroxyl radicals.

Expected Results:

The results obtained through the proposed research will provide more effective and low-cost process conditions for overcoming contaminant sorption and degrading a wide range of recalcitrant contaminants and their products in the Fenton-like treatment of contaminated soils and groundwater. Furthermore, the improved process conditions may have applications in the recycling of chemical process water, the in situ regeneration of granular activated carbon, and other industrial waste and pollution prevention applications.

Publications and Presentations:

Publications have been submitted on this project: View all 12 publications for this project

Journal Articles:

Journal Articles have been submitted on this project: View all 6 journal articles for this project

Supplemental Keywords:

soil, sediments, adsorption, organics, treatment, remediation, cleanup, oxidation, engineering, Scientific Discipline, Toxics, Waste, Water, Chemical Engineering, Contaminated Sediments, Environmental Chemistry, HAPS, Groundwater remediation, Environmental Engineering, sediment treatment, degradation, biorefractory contaminants, soil sediment, contaminated sediment, sorbed contaminants, Chloroform, kinetic studies, enhanced desporption, remediation, reactivity, hydroxyl radicals, Fenton's reagent

Progress and Final Reports:

1998 Progress Report
Final Report