Chlorbromuron urea herbicide removal by electro-Fenton reaction in aqueous effluents

Martı́nez, Susana Silva; Bahena, Cristina Lizama

doi:10.1016/j.watres.2008.09.036

Cited by 43 publications

(26 citation statements)

References 21 publications

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“…In Figure 1, the schematic view of the electro-coagulation reactor used in this research is shown. The electrical energy used is an important economic parameter in the electrocoagulation process; it is calculated using the following formula (14): P = (U.i.t)/V (5) where P is the amount of electricity used (kwh/L), U is the electrical voltage (V), I is the electrical intensity (A), t is the contact time (h), and V is the volume of wastewater or water (L) for each setting up of the device (14). Also, the number of electrodes used at the end of each experiment was determined by subtracting the initial and final weights.…”

Section: Methodsmentioning

confidence: 99%

Efficiency of electrical coagulation process using aluminum electrodes for municipal wastewater treatment: a case study at Karaj wastewater treatment plant

Yengejeh

Mansoorian

Majidi

et al. 2017

Environ Health Eng Manag

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Background: The reuse of treated municipal wastewater is an important source of water for different purposes. This study evaluated the efficiency of the electrocoagulation process in removing turbidity, total suspended solids (TSS), chemical oxygen demand (COD), nitrate, and phosphate from wastewater at the treatment facility in Karaj, Iran. Methods: This experimental study was performed at a pilot scale and in a batch system. A 4-liter tank made from safety glass with 4 plate electrodes made from aluminum was unipolarly connected to a direct current power supply with a parallel arrangement. Wastewater samples were taken from the influent at the Karaj wastewater treatment facility. Rates of turbidity, TSS, COD, nitrate, and phosphate removal under different conditions were determined. Results: The highest efficiency of COD, TSS, nitrate, turbidity, and phosphate elimination was achieved at a voltage of 30 volts and a reaction time of 30 minutes. The rates were 88.43%, 87.39%, 100%, 80.52%, and 82.69%, respectively. Conclusion: Based on the results of this study, electrocoagulation is an appropriate method for use in removing nitrate, phosphate, COD, turbidity, and TSS from wastewater.

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Section: Methodsmentioning

confidence: 99%

Efficiency of electrical coagulation process using aluminum electrodes for municipal wastewater treatment: a case study at Karaj wastewater treatment plant

Yengejeh

Mansoorian

Majidi

et al. 2017

Environ Health Eng Manag

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“…COD was determined in accordance with the closed reflux, calorimetric method 27 . The TOC was analysed using commercially available test kits (HACH Direct method, 10 173) in a 15-150 mg/l concentration range 28 . The evolution in functional groups of the dye samples was analysed using PerkinElmer Spectrum 400 FT-IR spectrophotometer over the range of 4000-400 cm −1 .…”

Section: Methodsmentioning

confidence: 99%

Decolourization of an azo dye in aqueous solution by ozonation in a semi-batch bubble column reactor

Abidin

Fahmi²,

Ong³

et al. 2015

ScienceAsia

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ABSTRACT:The oxidative degradation of the azo dye Reactive Red 120 by ozonation was investigated. The decolourization was carried out by bubbling ozone at the bottom of a bubble column reactor containing the dye solution. The colour, chemical oxygen demand, and total organic carbon removal were evaluated, and the contaminants were characterized based on the changes in UV-Vis and FT-IR spectra. It was observed that changes of UV-Vis spectra represent the disappearance of both azo and aromatic groups, which causes the colour removal. FT-IR analysis indicated that ozonation shifts the functional groups in the azo dye which results in decolourization, a decrease in aromaticity, and an increase in acidity. The results indicate that the chromophore is destroyed and partially mineralized to small fragments during ozonation. The alkaline pH was favourable to decomposition by ozonation, initiated by the formation of the hydroxyl radicals. The oxidation followed first-order kinetics and the completed decolourization confirmed the capability of ozonation to cleave the azo bond from the dye.

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“…Complete transformation of organic compounds to CO 2 by the solar photoelectro-Fenton process depends directly on the applied current density, the concentration of catalyst, organic concentration, and the solar radiation intensity [65,69,70]. There are other parameters like pH of the solution, temperature, and electrode materials that are important too in the photoelectro-Fenton process; however, Fenton reaction is efficient at the pH interval of 2.5 < pH < 3 [7,[71][72][73], oxygen is needed to produce H 2 O 2 , and its solubility is affected by the temperature [74]; thus, it is better to perform the experiment at room temperature, and the electrode materials like carbonaceous cathodes [46,[48][49][50] and BDD anodes [56,75] have been proved to be the best materials (to reduce oxygen and to produce OH…”

Section: Influencing Parameters On the Degradation Of Organicmentioning

confidence: 99%

“…These two AOP have proved to be very effective for degrading a vast aqueous organic contaminants such as emerging [2,3], persistent [4][5][6][7][8][9], textiles [10][11][12][13], and bacteria [14][15][16] pollutants.…”

Section: Introductionmentioning

confidence: 99%

Recent Overview of Solar Photocatalysis and Solar Photo-Fenton Processes for Wastewater Treatment

Gutierrez-Mata

Velázquez-Martínez

Álvarez-Gallegos

et al. 2017

International Journal of Photoenergy

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This literature research, although not exhaustive, gives perspective to solar-driven photocatalysis, such as solar photo-Fenton and TiO 2 solar photocatalysis, reported in the literature for the degradation of aqueous organic pollutants. Parameters that influence the degradation and mineralization of organics like catalyst preparation, type and load of catalyst, catalyst phase, pH, applied potential, and type of organic pollutant are addressed. Such parameters may also affect the photoactivity of the catalysts used in the studied solar processes. Solar irradiation is a renewable, abundant, and pollution-free energy source for low-cost commercial applications. Therefore, these solar processes represent an environmentally friendly alternative mainly because the use of electricity can be decreased/avoided.

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Chlorbromuron urea herbicide removal by electro-Fenton reaction in aqueous effluents

Cited by 43 publications

References 21 publications

Efficiency of electrical coagulation process using aluminum electrodes for municipal wastewater treatment: a case study at Karaj wastewater treatment plant

Efficiency of electrical coagulation process using aluminum electrodes for municipal wastewater treatment: a case study at Karaj wastewater treatment plant

Decolourization of an azo dye in aqueous solution by ozonation in a semi-batch bubble column reactor

Recent Overview of Solar Photocatalysis and Solar Photo-Fenton Processes for Wastewater Treatment

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