In situ TCE bioremediation study using electrokinetic cometabolite injection

Rabbi, Md. Fazle; Clark, Brandi; Gale, Robert J.; Ozsu-Acar, Elif; Pardue, John H.; Jackson, W. Andrew

doi:10.1016/s0956-053x(99)00329-3

Cited by 42 publications

(18 citation statements)

References 7 publications

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“…Even with initial TCE concentrations increased from 10 to 20, 30, 40, and 50 mg L -1 , the TCE concentrations were significantly decreased to 1.2, 0.4, 1.2, . This result confirms that the iron-iron oxide mixture exhibits higher capacity for TCE decomposition than previously developed TCE decomposing methods referred in [2][3][4][5][6][7].…”

Section: Decomposition Of Tcesupporting

confidence: 86%

“…Therefore, to satisfy the severe environmental regulations for TCE concentration, several detoxification methods have been developed using activated charcoal filter or microbes; however, they are not sufficient solutions due to several disadvantages. For example, the TCE collection rate using a charcoal filter decreased after long-term use [2,3], and decomposition of TCE by bioremediation requires long periods for purification [4,5]. Therefore, methods for TCE detoxification with high efficiency and without undesirable effects on the environment have yet to be developed.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Effect of the structural change of an iron–iron oxide mixture on the decomposition of trichloroethylene

Kubuki

Shibano

Akiyama

et al. 2012

J Radioanal Nucl Chem

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The effect of the structure of a mixture of industrially produced iron and iron oxide on the decomposition of trichloroethylene (TCE) was investigated by gas chromatography, scanning electron microscopy, Fourier transform infrared spectroscopy, energy dispersive X-ray analysis, X-ray diffractometry, and 57 Fe-Mössbauer spectroscopy. The concentration of 10 mg L -1 TCE aqueous solution decreased to 0.41, 0.52, 0.26, and 0.09 mg L -1 when stirred for 7 days with iron-iron oxide mixtures having mass ratios of 2:8, 3:7, 4:6, and 5:5, respectively. The Mössbauer spectra of the mixtures after leaching were composed of two sextets with respective isomer shifts (d) and internal magnetic fields (H) of 0.29 ±0.01 mm s -1 and 48.8 ±0.1 T, and 0.64 ±0.01 mm s -1 and 45.5 ±0.1 T, attributed to the Fe 3? species in tetrahedral (T d ) and the Fe 2? and Fe 3? mixed species (Fe 2.5? ) in octahedral (O h ) sites, respectively. Mössbauer spectra of a 3:7 mass ratio iron-iron oxide mixture showed a gradual decrease in the absorption area (A) of zero valent iron (Fe 0 ) from 40.6. to 12.6, 13.2, 3.8 2.8, and 1.0 ±0.5 % and an increase in A of Fe 3 O 4 from 31.8 to 59.4, 71.4, 93.2, 95.6, and 98.0 ±0.5 % after leaching with 10 mg L -1 TCE aqueous solution for 1, 2, 3, 7, and 10 days, respectively. Consistent values of the first-order rate constant were calculated as 0.32 day -1 for Fe 0 oxidation, 0.34 day -1 for Fe 3 O 4 production, and 0.30 day -1 for TCE decomposition, which indicates that the oxidation of Fe 0 was the rate-controlling factor for Fe 3 O 4 production and TCE decomposition. It is concluded from the experimental results that an iron-iron oxide mixture is very effective for the decomposition of TCE.

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Section: Decomposition Of Tcesupporting

confidence: 86%

Section: Introductionmentioning

confidence: 99%

Effect of the structural change of an iron–iron oxide mixture on the decomposition of trichloroethylene

Kubuki

Shibano

Akiyama

et al. 2012

J Radioanal Nucl Chem

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“…Compared to other degradation techniques, which may suffer from many disadvantages as, for example, the conversion to more toxic compounds, slow degradation rates (e.g., k ¼ 0.01-0.1 day À1 for microbial techniques (Rabbi et al, 2000;Rodriguez et al, 2004) and k ¼ 0.01-0.1 h À1 for zerovalent iron (Johnson et al, 1996)), our approach converted effectively and rapidly (k ¼ 0.0685 AE 0.0011 min À1 ) TCE to ethane. A bio-Pd based MR technology demonstrated its potential for the removal of TCE.…”

Section: Discussionmentioning

confidence: 99%

Biocatalytic dechlorination of trichloroethylene with bio‐palladium in a pilot‐scale membrane reactor

Hennebel

Simoen

Windt

et al. 2008

Biotech & Bioengineering

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Trichloroethylene (TCE) is a toxic and recalcitrant groundwater pollutant. An innovative technology using microbial produced Pd(0) nanoparticles for the remediation of TCE contaminated groundwater was developed. The nanoscale bio-Pd particles were precipitated on the biomass of Shewanella oneidensis and hydrogen gas, formate, or formic acid were used as hydrogen donors. Ethane turned out to be the only organic degradation product and no intermediate chlorinated reaction products were detected. Subsequently bio-Pd was implemented in a plate membrane reactor (MR) for the treatment of water containing TCE. In a continuous MR system, containing 50 mg L(-1) bio-Pd, removal rates up to 2,515 mg TCE day(-1) g(-1) Pd were achieved with H(2) gas as hydrogen donor. The measured chloride mass balance confirmed the removal rates. This work shows that a complete, efficient and rapid removal of TCE was achieved with bio-Pd and that a MR system containing bio-Pd and supplied with hydrogen gas offers an alternative for the current remediation technologies of water contaminated with TCE.

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“…Bioremediation coupled with EK-PR could increase the temperature, bioavailability and transformation of organic contaminants without causing extreme pH conditions at the electrodes [20,21]. In addition, this technique may enhance the microbial activity for the degradation of contaminants, by producing oxygen at the anode [22]. In EK-Bio technology, the removal of organic contaminant likely depends not only on the effect of biodegradation, but also on that of electrical intensity induced stimulation [19].…”

Section: Introductionmentioning

confidence: 99%

Effect of polarity-reversal on electrokinetic enhanced bioremediation of Pyrene contaminated soil

Li¹,

Wang²,

Guo

et al. 2016

Electrochimica Acta

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In situ TCE bioremediation study using electrokinetic cometabolite injection

Cited by 42 publications

References 7 publications

Effect of the structural change of an iron–iron oxide mixture on the decomposition of trichloroethylene

Effect of the structural change of an iron–iron oxide mixture on the decomposition of trichloroethylene

Biocatalytic dechlorination of trichloroethylene with bio‐palladium in a pilot‐scale membrane reactor

Effect of polarity-reversal on electrokinetic enhanced bioremediation of Pyrene contaminated soil

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