Soil organic matter-hydrogen peroxide dynamics in the treatment of contaminated soils and groundwater using catalyzed H2O2 propagations (modified Fenton's reagent)

Lauren L Bissey; Jeffrey L Smith; Richard J Watts

doi:10.1016/j.watres.2006.05.009

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Soil organic matter-hydrogen peroxide dynamics in the treatment of contaminated soils and groundwater using catalyzed H2O2 propagations (modified Fenton's reagent)

Journal article

Peer reviewed

Soil organic matter-hydrogen peroxide dynamics in the treatment of contaminated soils and groundwater using catalyzed H2O2 propagations (modified Fenton's reagent)

Lauren L Bissey, Jeffrey L Smith and Richard J Watts

Water research (Oxford), Vol.40(13), pp.2477-2484

07/2006

DOI: https://doi.org/10.1016/j.watres.2006.05.009

Handle:

https://hdl.handle.net/2376/114021

PMID: 16815526

Abstract

Water Pollutants - analysis

Soil Pollutants - metabolism

Drug Stability

Environmental Pollution

Hydrogen Peroxide - pharmacology

Organic Chemicals - chemistry

Hydroxyl Radical - metabolism

Soil - analysis

Decontamination - methods

Iron - pharmacology

The interactions between catalyzed H(2)O(2) propagations (CHP-i.e. modified Fenton's reagent) and soil organic matter (SOM) during the treatment of contaminated soils and groundwater was studied in a well-characterized surface soil. The fate of two fractions of SOM, particulate organic matter (POM) and nonparticulate organic matter (NPOM), during CHP reactions was evaluated using concentrations of hydrogen peroxide from 0.5 to 3M catalyzed by soluble iron (III), an iron (III)-ethylenediamine tetraacetic acid (EDTA) chelate, or naturally-occurring soil minerals. The destruction of total SOM in CHP systems was directly proportional to the hydrogen peroxide dosage, and was significantly greater at pH 3 than at neutral pH; furthermore, SOM destruction occurred predominantly in the NPOM fraction. At pH 3, SOM did not affect hydrogen peroxide decomposition rates or hydroxyl radical activity in CHP reactions. However, at neutral pH, increasing the mass of SOM decreased the hydrogen peroxide decomposition rate and increased the rate of hydroxyl radical generation in CHP systems. These results show that, while CHP reactions destroy some of the organic carbon pools, SOM does not have a significant effect on the CHP treatment of soils and groundwater.

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Title: Soil organic matter-hydrogen peroxide dynamics in the treatment of contaminated soils and groundwater using catalyzed H2O2 propagations (modified Fenton's reagent)
Creators: Lauren L Bissey - Department of Geology, Washington State University Pullman, 99164-2910, USA
Jeffrey L Smith
Richard J Watts
Publication Details: Water research (Oxford), Vol.40(13), pp.2477-2484
Academic Unit: Civil and Environmental Engineering, Department of
Publisher: England
Identifiers: 99900548045001842
Language: English
Resource Type: Journal article

Soil organic matter-hydrogen peroxide dynamics in the treatment of contaminated soils and groundwater using catalyzed H2O2 propagations (modified Fenton's reagent)

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