Degradation of monofluorophenols in water irradiated with gaseous plasma

Yang, Haiming; Mengen, Giya; Matsumoto, Yuki; Tezuka, Meguru

doi:10.1016/s1001-0742(14)60652-5

Cited by 8 publications

(5 citation statements)

References 24 publications

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“…5,6 Plasmas have, therefore, also been investigated to remove phenolic based species from wastewater as a remediation strategy. [7][8][9][10] In order to gain a fundamental understanding for the utility of atmospheric plasmas to economically produce bio-fuels and other useful chemicals, or degrading toxic compounds, plasma simulations incorporating complete cross section databases (in fact, this is true in modelling most phenomena [11][12][13][14][15][16][17][18] ) are required. To this end, we have conducted a series of joint experimental and theoretical studies looking at the behaviour of electron-phenol scattering processes.…”

Section: Introductionmentioning

confidence: 99%

Integral cross sections for electron impact excitation of vibrational and electronic states in phenol

Neves

Jones

Lopes

et al. 2015

The Journal of Chemical Physics

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Electron collisions with phenol: Total, integral, differential, and momentum transfer cross sections and the role of multichannel coupling effects on the elastic channel J. Chem. Phys. 142, 104304 (2015) We report on measurements of integral cross sections (ICSs) for electron impact excitation of a series of composite vibrational modes and electronic-states in phenol, where the energy range of those experiments was 15-250 eV. There are currently no other results against which we can directly compare those measured data. We also report results from our independent atom model with screened additivity rule correction computations, namely, for the inelastic ICS (all discrete electronic states and neutral dissociation) and the total ionisation ICS. In addition, for the relevant dipole-allowed excited electronic states, we also report f -scaled Born-level and energy-corrected and f -scaled Born-level (BE f -scaled) ICS. Where possible, our measured and calculated ICSs are compared against one another with the general level of accord between them being satisfactory to within the measurement uncertainties. C 2015 AIP Publishing LLC. [http://dx

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Section: Introductionmentioning

confidence: 99%

Integral cross sections for electron impact excitation of vibrational and electronic states in phenol

Neves

Jones

Lopes

et al. 2015

The Journal of Chemical Physics

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“…S3). In this process, a decrease in pH value of the reaction system was detected, which was due to the degradation of 4-FP accompanied by the release of HF and its complete dissolution in water (Ferreira et al 2008 ; Yang et al 2013 ). In industry, coagulation/precipitation methods, adsorption processes and ion exchange processes can be used to remove fluoride from wastewater (Solanki et al 2022 ; Yadav et al 2017 ).…”

Section: Resultsmentioning

confidence: 99%

Metabolic engineering of Escherichia coli for efficient degradation of 4-fluorophenol

et al. 2022

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As a kind of refractory organic pollutant, 4-fluorophenol (4-FP) can be degraded by only a few microorganisms with low efficiency because of the great electron-withdrawing ability of fluorine atoms. So it is necessary to artificially construct engineered strain to improve the degradation efficiency and meet the requirements of pollutant degradation. In this study, four genes (fpdA2, fpdB, fpdC, and fpdD) for 4-FP degradation from Arthrobacter sp. strain IF1 were optimized and synthesized and then reconstructed into Escherichia coli by a multi-monocistronic vector to obtain recombinant BL-fpd that could degrade 4-FP efficiently. Under optimized induction conditions (inducing the strain by 2 g/L L-arabinose and 1 mM IPTG at 37 ℃), BL-fpd could completely degrade 2 mM 4-FP, 4-chlorophenol, 4-bromophenol, and 4-nitrophenol into β-ketoadipate, which could be further metabolized by the bacteria. FpdA2 showed the highest activity towards 4-bromophenol. The strain could completely degrade 1 mM 4-FP in industrial wastewater within 3 h. This study provided a promising strain for the degradation of 4-FP and some other 4-substituted phenols. The construction technologies of multi-monocistronic expression vector may also be used to construct other organic pollutants degrading bacteria.

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“…The discharged 4-FP residues in water have drawn attention because they have significant biological effects as enzyme inhibitors and can accumulate in the body through food chains [28−30]. Since 1976, 4-FP has been listed as a priority pollutant by the U.S. Environmental Protection Agency [31]. However, the studies of photocatalytic degradation of aqueous 4-FP under visible light condition have not yet been reported because of its stable chemical structure.…”

Section: Introductionmentioning

confidence: 99%

Fabrication of highly dispersed platinum-deposited porous g-C3N4 by a simple in situ photoreduction strategy and their excellent visible light photocatalytic activity toward aqueous 4-fluorophenol degradation

Zeng

Wei

et al. 2017

Chinese Journal of Catalysis

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Degradation of monofluorophenols in water irradiated with gaseous plasma

Cited by 8 publications

References 24 publications

Integral cross sections for electron impact excitation of vibrational and electronic states in phenol

Integral cross sections for electron impact excitation of vibrational and electronic states in phenol

Metabolic engineering of Escherichia coli for efficient degradation of 4-fluorophenol

Fabrication of highly dispersed platinum-deposited porous g-C3N4 by a simple in situ photoreduction strategy and their excellent visible light photocatalytic activity toward aqueous 4-fluorophenol degradation

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