Fenton degradation of tetrachloroethene and hexachloroethane in Fe(II) catalyzed systems

Jho, Eun Hea; Singhal, Naresh; Turner, Susan

doi:10.1016/j.jhazmat.2010.08.027

Cited by 32 publications

(19 citation statements)

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“…Other in situ remediation strategies may include stimulation of the microbially driven Fenton reaction by placing reactive iron barriers in the flow path of contaminated subsurface aquifers and exposing Fe(III)-reducing bacteria attached to the iron barriers to alternating anaerobic and aerobic conditions (57). Additional targets for ex situ and in situ degradation by the microbially driven Fenton reaction developed in the present study include multiple combinations of environmental contaminants susceptible to attack by Fenton reaction-generated HO˙radicals, including commingled plumes of 1,4-dioxane, PCP (35,36), PCE (24), TCE (23), TCA (37), and PFAS (58).…”

Section: Discussionmentioning

confidence: 99%

“…Conventional Fenton reaction-generated HO˙radicals oxidatively degrade a number of hazardous compounds, including chlorinated aliphatic and aromatic compounds (34), pentachlorophenol (PCP) (35,36), PCE (24), TCE (1,5,23,26,33), 1,1,2-trichloroethane (TCA) (37), 1,4-dioxane (32), and petroleum hydrocarbons (38). Conventional Fenton reaction-driven transformation of TCE, PCE, and 1,4-dioxane is limited, however, by the high concentrations of the Fenton reagents Fe(II) and H 2 O 2 that must be continuously supplied to produce HO˙radicals and drive TCE, PCE, and 1,4-dioxane transformation (1,24).…”

mentioning

confidence: 99%

“…Conventional Fenton reaction-driven transformation of TCE, PCE, and 1,4-dioxane is limited, however, by the high concentrations of the Fenton reagents Fe(II) and H 2 O 2 that must be continuously supplied to produce HO˙radicals and drive TCE, PCE, and 1,4-dioxane transformation (1,24). At neutral pH, addition of Fe(III)-complexing ligands may improve conventional Fenton reaction efficiencies by preventing Fe(III) oxide precipitation (39).…”

mentioning

confidence: 99%

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Simultaneous Transformation of Commingled Trichloroethylene, Tetrachloroethylene, and 1,4-Dioxane by a Microbially Driven Fenton Reaction in Batch Liquid Cultures

Sekar

Taillefert

DiChristina

2016

Appl Environ Microbiol

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Improper disposal of 1,4-dioxane and the chlorinated organic solvents trichloroethylene (TCE) and tetrachloroethylene (also known as perchloroethylene [PCE]) has resulted in widespread contamination of soil and groundwater. In the present study, a previously designed microbially driven Fenton reaction system was reconfigured to generate hydroxyl (HO˙) radicals for simultaneous transformation of source zone levels of single, binary, and ternary mixtures of TCE, PCE, and 1,4-dioxane. The reconfigured Fenton reaction system was driven by fed batch cultures of the Fe(III)-reducing facultative anaerobe Shewanella oneidensis amended with lactate, Fe(III), and contaminants and exposed to alternating anaerobic and aerobic conditions. To avoid contaminant loss due to volatility, the Fe(II)-generating, hydrogen peroxide-generating, and contaminant transformation phases of the microbially driven Fenton reaction system were separated. The reconfigured Fenton reaction system transformed TCE, PCE, and 1,4-dioxane either as single contaminants or as binary and ternary mixtures. In the presence of equimolar concentrations of PCE and TCE, the ratio of the experimentally derived rates of PCE and TCE transformation was nearly identical to the ratio of the corresponding HO˙radical reaction rate constants. The reconfigured Fenton reaction system may be applied as an ex situ platform for simultaneous degradation of commingled TCE, PCE, and 1,4-dioxane and provides valuable information for future development of in situ remediation technologies. IMPORTANCE A microbially driven Fenton reaction system [driven by the Fe(III)-reducing facultative anaerobe S. oneidensis] was reconfigured to transform source zone levels of TCE, PCE, and 1,4-dioxane as single contaminants or as binary and ternary mixtures.The microbially driven Fenton reaction may thus be applied as an ex situ platform for simultaneous degradation of at least three (and potentially more) commingled contaminants. Additional targets for ex situ and in situ degradation by the microbially driven Fenton reaction developed in the present study include multiple combinations of environmental contaminants susceptible to attack by Fenton reaction-generated HO˙radicals, including commingled plumes of 1,4-dioxane, pentachlorophenol (PCP), PCE, TCE, 1,1,2-trichloroethane (TCA), and perfluoroalkylated substances (PFAS).T he chlorinated organic solvents trichloroethylene (TCE) and tetrachloroethylene (also known as perchloroethylene [PCE]) have been historically employed as solvents in a variety of industrial processes, including vapor degreasing of metal surfaces, paint stripping, and dry cleaning (1, 2). TCE and PCE are carcinogenic, and improper disposal practices at industrial sites have resulted in widespread contamination of soil and groundwater (1-6). Due to their high density and low aqueous phase solubility, TCE and PCE are also highly persistent in contaminated environments (3, 4). The potential carcinogen 1,4-dioxane is generally employed as a stabilizer for TCE and PCE i...

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Section: Discussionmentioning

confidence: 99%

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confidence: 99%

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confidence: 99%

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Simultaneous Transformation of Commingled Trichloroethylene, Tetrachloroethylene, and 1,4-Dioxane by a Microbially Driven Fenton Reaction in Batch Liquid Cultures

Sekar

Taillefert

DiChristina

2016

Appl Environ Microbiol

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“…Both chemicals are commonly encountered as groundwater pollutants 9 and their individual degradation by Fenton reagent has previously been investigated. 10 While PCE can be degraded by OH…”

Section: •−mentioning

confidence: 99%

“…The experimental procedure followed has previously been reported. 10 Residual PCE and HCA analysis At specified intervals the residual PCE or HCA was extracted in hexane 10 and analyzed using a Hewlett-Packard 6860A gas chromatograph equipped with a 0.53 mm (ID) ×30 m AT-624 capillary column (Alltech, USA) and a halogen specific detector (O.I. Analytical, USA).…”

Section: Chemicals and Solution Preparationmentioning

confidence: 99%

Tetrachloroethylene and hexachloroethane degradation in Fe(III) and Fe(III)–citrate catalyzed Fenton systems

Jho

Singhal

Turner

2012

J of Chemical Tech & Biotech

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Anodic oxidation for the remediation of soils polluted with perchloroethylene

Muñoz-Morales

Sáez

Cañizares

et al. 2018

J of Chemical Tech & Biotech

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BACKGROUND This work focuses on the removal of perchloroethylene (PCE) from soils spiked with this hazardous chlorinated hydrocarbon and oil by a combination of two technologies: soil washing and anodic oxidation with diamond electrodes. The first attains the transfer of the pollutant from the soil to a soil washing fluid (SWF), from which the organics are then efficiently removed. RESULTS Results show that high concentrations of sodium dodecyl sulphate (SDS) are required in the SWF for an efficient extraction of the chlorinated hydrocarbon and electrolysis has to be applied not only to the clarified liquid, but also to the interphase. The surfactant used interacts strongly with soil not only during the washing, but also during the electrolysis step. This interaction seems to play a protective role against the oxidation of SDS. The initial phase of the electrolysis is rather complex and there are several processes which modify the results importantly. CONCLUSIONS Removal of PCE by electrolysis from soil is less efficient than its removal from synthetic solutions of this chlorinated pollutant. There are two first‐order kinetic zones, which indicate an important competition for the oxidation of the different organics contained in the SWF during the electrolysis. © 2018 Society of Chemical Industry

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Fenton degradation of tetrachloroethene and hexachloroethane in Fe(II) catalyzed systems

Cited by 32 publications

References 32 publications

Simultaneous Transformation of Commingled Trichloroethylene, Tetrachloroethylene, and 1,4-Dioxane by a Microbially Driven Fenton Reaction in Batch Liquid Cultures

Simultaneous Transformation of Commingled Trichloroethylene, Tetrachloroethylene, and 1,4-Dioxane by a Microbially Driven Fenton Reaction in Batch Liquid Cultures

Tetrachloroethylene and hexachloroethane degradation in Fe(III) and Fe(III)–citrate catalyzed Fenton systems

Anodic oxidation for the remediation of soils polluted with perchloroethylene

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