Oxidative degradation and mineralization of the phenylurea herbicide fluometuron in aqueous media by the electro-Fenton process

Abstract The oxidative degradation of CV dye in aqueous media has been evaluated using Fenton (Fe2+/H2O2) and photo-Fenton (Fe2+/H2O2/UV) processes. Various operational parameters like H2O2 dosages, Fe2+ dosages and [CV]0 were optimized of both Fenton and photo-Fenton processes for the removal of CV dye from aqueous media. Kinetic results indicated that photo-Fenton process (kobs=0.0097 min−1, t1/2=71.45 min) is more effective than Fenton process (kobs=0.0074 min−1, t1/2=93.66 min). Second order rate constant of ˙OH radical with CV dye was calculated to be 3.96×109 M−1s−1. De-methylated organic intermediates of CV dye detected by LC-MS and some other intermediates like CH3COO−, HCOO−, NH4+ and Cl− were identified by ion-chromatography.

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KINETICS CONSIDERATIONS CONCERNING THE OXIDATIVE DEGRADATION BY PHOTO-FENTON PROCESS OF SOME ANTIBIOTICS

Environmental Engineering and Management Journal ◽

10.30638/eemj.2010.001 ◽

2010 ◽

Vol 9 (1) ◽

pp. 1-5 ◽

Cited By ~ 1

Author(s):

Ion Untea ◽

Cristina Orbeci ◽

Madelene Dancila ◽

Daniela Simina Stefan

Keyword(s):

Oxidative Degradation ◽

Fenton Process

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Silica-Supported Co3O4 Nanoparticles as a Recyclable Catalyst for Rapid Degradation of Azodye

BULLETIN OF CHEMICAL REACTION ENGINEERING AND CATALYSIS ◽

10.9767/bcrec.11.3.568.284-291 ◽

2016 ◽

Vol 11 (3) ◽

pp. 284 ◽

Cited By ~ 2

Author(s):

Ali Baghban ◽

Esmail Doustkhah ◽

Sadegh Rostamnia ◽

Khadijeh Ojaghi Aghbash

Keyword(s):

Silica Nanoparticles ◽

Aqueous Media ◽

Oxidative Degradation ◽

Ammonium Persulfate ◽

Recyclable Catalyst ◽

Co3o4 Nanoparticles ◽

Media Effect ◽

Rapid Degradation ◽

Ft Ir ◽

20 Nm

In this paper, silica nanoparticles with particle size of ~ 10-20 nm were selected as a support for the synthesis of Co3O4 nanoparticles by impregnation of silica nanoparticles in solution of Co(II) in a specific concentrations and then calcination to 800 oC. This nanocomposite was then, used as a catalyst for oxidative degradation of methyl orange (MO) with ammonium persulfate in aqueous media. Effect of pH, temperature, contact time, amount of oxidant and catalyst were studied in the presence of manuscript. Scanning electron microscope (SEM), electron dispersive spectroscopy (EDS), FT-IR, and ICP-AES analyses were used for analysis of silica-supported Co3O4 (Co3O4/SiO2). Treating MO with ammonium persulfate in the presence of Co3O4/SiO2 led to complete degradation of MO under the optimized conditions. Also, the catalyst exhibited recyclability at least over 10 consecutive runs. Copyright © 2016 BCREC GROUP. All rights reservedReceived: 12nd December 2015; Revised: 27th January 2016; Accepted: 27th January 2016How to Cite: Baghban, A., Doustkhah, E., Rostamnia, S., Aghbash, K.O. (2016). Silica-Supported Co3O4 Nanoparticles as a Recyclable Catalyst for Rapid Degradation of Azodye. Bulletin of Chemical Reaction Engineering & Catalysis, 11 (3): 284-291 (doi:10.9767/bcrec.11.3.568.284-291)Permalink/DOI: <a href="http://doi.org/10.9767/bcrec.11.3.568.284-291">http://doi.org/10.9767/bcrec.11.3.568.284-291</a>

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Efficient removal of diuretic hydrochlorothiazide from water by electro-Fenton process using BDD anode: a kinetic and degradation pathway study

Environmental Chemistry ◽

10.1071/en19121 ◽

2019 ◽

Vol 16 (8) ◽

pp. 613 ◽

Cited By ~ 1

Author(s):

Hélène Monteil ◽

Nihal Oturan ◽

Yoan Péchaud ◽

Mehmet A. Oturan

Keyword(s):

Electrochemical Oxidation ◽

Oxidation Reaction ◽

Oxidation Process ◽

Aqueous Media ◽

Degradation Pathway ◽

Constant Current ◽

Gas Chromatography Mass Spectrometry ◽

Aqueous Environment ◽

Fenton Process ◽

Kinetic Rate Constant

Environmental contextHydrochlorothiazide, a common diuretic pharmaceutical, occurs in environmental waters because current treatment technologies are unable to eliminate it from wastewater. To remove this environmentally hazardous chemical from water, we developed an advanced electrochemical oxidation process to efficiently degrade and mineralise the compound. Wider application of the process holds the promise of general, efficient destruction of pharmaceuticals in aqueous media. AbstractThe degradation and the mineralisation of the diuretic hydrochlorothiazide were studied by an advanced electrochemical oxidation process, ‘electro-Fenton’, which generates in situ hydroxyl radicals that are able to successfully oxidise or mineralise organic pollutants. In this study, a 0.1mM (29.8mgL−1) hydrochlorothiazide solution was completely oxidatively degraded in 15min under constant current electrolysis at 500 mA. The absolute kinetic rate constant of the oxidation reaction was also determined as (4.37±0.04)×109M−1s−1. The quasi-complete mineralisation of the solution was obtained with electrolysis for 6h under the same applied current. Several oxidation reaction intermediates were identified using gas chromatography-mass spectrometry (GC-MS). The formed carboxylic acids during the mineralisation process were also studied; oxamic, oxalic, acetic and maleic acids were identified and their concentrations were monitored throughout the electrolysis. The ions released during the treatment were also considered. Based on these data and the total organic carbon (TOC) removal results, a possible mineralisation pathway was proposed. These findings enable the conclusion that the electro-Fenton process is an efficient and environmentally-friendly method to eliminate the hazardous drug hydrochlorothiazide from an aqueous environment.

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Kinetics of oxidative degradation/mineralization pathways of the phenylurea herbicides diuron, monuron and fenuron in water during application of the electro-Fenton process

Applied Catalysis B Environmental ◽

10.1016/j.apcatb.2010.03.026 ◽

2010 ◽

Vol 97 (1-2) ◽

pp. 82-89 ◽

Cited By ~ 87

Author(s):

Mehmet A. Oturan ◽

Mohamed C. Edelahi ◽

Nihal Oturan ◽

Kacem El kacemi ◽

Jean-Jacques Aaron

Keyword(s):

Oxidative Degradation ◽

Fenton Process ◽

Phenylurea Herbicides ◽

Kinetics Of

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Oxidative degradation of Acid Blue 111 by electro-assisted Fenton process

Journal of Water Process Engineering ◽

10.1016/j.jwpe.2020.101394 ◽

2020 ◽

Vol 36 ◽

pp. 101394 ◽

Cited By ~ 2

Author(s):

Stevan Lj. Stupar ◽

Branimir N. Grgur ◽

Marina M. Radišić ◽

Antonije E. Onjia ◽

Negovan D. Ivanković ◽

...

Keyword(s):

Oxidative Degradation ◽

Fenton Process ◽

Acid Blue

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Contribution of copper binding to the inhibition of lipid oxidation by plasmalogen phospholipids

Biochemical Journal ◽

10.1042/bj3400377 ◽

1999 ◽

Vol 340 (2) ◽

pp. 377-383 ◽

Cited By ~ 16

Author(s):

Daniela HAHNEL ◽

Thomas HUBER ◽

Volker KURZE ◽

Klaus BEYER ◽

Bernd ENGELMANN

Keyword(s):

Lipid Oxidation ◽

Copper Ions ◽

Aqueous Media ◽

Oxidative Degradation ◽

Direct Interaction ◽

Molar Ratio ◽

Protective Effects ◽

Copper Binding ◽

Enol Ether

The role of plasmalogen phospholipids for copper-induced lipid oxidation was evaluated. Using 1H-NMR we observed that the copper (CuSO4)-promoted oxidative degradation of polyunsaturated fatty acids in micellar solution was dose-dependently attenuated by the plasmalogen lysoplasmenylethanolamine from bovine brain (lysoBP-PtdEtn). This was due to a direct interaction of copper ions with the plasmalogen-specific enol ether double bond. The enol ether methine 1H signal decreased on the addition of copper, saturation being reached at a molar ratio of lysoBP-PtdEtn to copper of 1:1. The original 1H signal was recovered almost completely after the addition of EDTA. Enrichment of micelles and low-density lipoproteins (LDLs) with plasmalogen phospholipids led to a decrease in the Cu(II) concentration in the aqueous media. After loading of LDLs in vitro with BP-PtdEtn, the LDL-dependent formation of Cu(I) was decreased, in particular in particles experimentally supplemented with α-tocopherol. The suppression of copper-promoted lipid oxidation that was observed in the presence of plasmalogen phospholipids plus α-tocopherol was greater than the sum of the protective effects elicited by the two substances alone. In conclusion, the formation of a complex between copper ions and the plasmalogens accounts partly for their inhibition of copper-induced lipid oxidation.

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Activation of Peroxymonosulfate by CuNi@C Derived from Metal–Organic Frameworks Precursor

Australian Journal of Chemistry ◽

10.1071/ch18260 ◽

2018 ◽

Vol 71 (11) ◽

pp. 874 ◽

Cited By ~ 2

Author(s):

Xue Huang ◽

Jing Zhang ◽

Xiao Zhang ◽

Qing-Ping Wu ◽

Chun-Hui Yan

Keyword(s):

Photoelectron Spectroscopy ◽

Metallic Copper ◽

Metal Organic Frameworks ◽

Aqueous Media ◽

Oxidative Degradation ◽

Acid Orange 7 ◽

X Ray Diffraction ◽

X Ray ◽

Initial Ph ◽

Metal Organic

Calcined Cu-based metal–organic frameworks impregnated with nickel nitrate catalysts (CuNi@C) were synthesised. X-Ray diffraction, scanning electronic microscopy, energy dispersive X-ray spectrometry, and X-ray photoelectron spectroscopy techniques were applied for the characterisation of the synthesised catalyst, which revealed an octahedral particle shape, rough surface, and metallic copper (Cu, CuO) and nickel (Ni, NiO) particles. CuNi@C was fabricated as a novel peroxymonosulfate (PMS) activator for the oxidative degradation of Acid Orange 7 (AO7) in aqueous media. Results showed that the CuNi@C/PMS system can efficiently degrade nearly 100 % of 0.02 mmol L−1 AO7 within 60 min. In addition, the trapping experiments confirmed the participation of sulfate radicals (SO4•−) and hydroxyl radicals (HO•) as reactive species in the system. Furthermore, the effects of parameters including catalyst and PMS dosages, initial concentration of AO7, and pH were studied. Results showed that the decolourisation efficiency increased with the increase of catalyst dosage, but decreased with the increase of AO7 concentration. The optimal PMS concentration was 0.675 mmol L−1, and initial pH showed no significant effect on the degradation of AO7. Moreover, the CuNi@C could be reused four times with good activity and reusability. Findings revealed that the CuNi@C/PMS system shows potential for degrading contaminants in the environment, due to its catalytic activity and non-negligible adsorption.

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