Removal of atrazine in water by combination of activated carbon and dielectric barrier discharge

Vanraes, Patrick; Willems, Gert; Nikiforov, Anton; Surmont, Pieter; Lynen, Frédéric; Vandamme, Jeroen; Durme, Jim Van; Verheust, Yannick; Hulle, Stijn Van; Dumoulin, Ann; Leys, Christophe

doi:10.1016/j.jhazmat.2015.07.075

Cited by 68 publications

(40 citation statements)

References 37 publications

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“…For alachlor, energy efficiency remains constant in the accuracy of the measurements, as in the case of atrazine reported in our previous research (Vanraes et al 2015b). For diuron, there is a slight rise in energy efficiency when power is increased.…”

Section: Effect Of Power At Constant Duty Cyclesupporting

confidence: 76%

“…Each pesticide removal experiment is performed with the plasma reactor described in our previous study (Vanraes et al 2015b). In short, a pesticide solution is continuously recirculated between a plasma chamber and an ozonation chamber.…”

Section: Dbd Water Treatment Reactor and Determination Of Solution Pamentioning

confidence: 99%

“…The reactor standard settings are different from the ones used in previous work and are given in Table 1. Information on the Zorflex® textile, on the method for power determination and on the measurement methods of pH and conductivity is given in (Vanraes et al 2015b). The structural formulas of all compounds are depicted in Figure 1 and their most relevant physical and chemical properties are enlisted in Table A.1 in the Appendix.…”

Section: Dbd Water Treatment Reactor and Determination Of Solution Pamentioning

confidence: 99%

“…Further, we have developed and characterized a new type of plasma reactor for water treatment (Vanraes et al 2015b). In this reactor, micropollutant decomposition by atmospheric dielectric barrier discharge in dry air is combined with adsorption on activated carbon textile and with extra bubbling of plasma-generated ozone.…”

Section: Introductionmentioning

confidence: 99%

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Removal of several pesticides in a falling water film DBD reactor with activated carbon textile: Energy efficiency

et al. 2017

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Bio-recalcitrant micropollutants are often insufficiently removed by modern wastewater treatment plants to meet the future demands worldwide. Therefore, several advanced oxidation techniques, including cold plasma technology, are being investigated as effective complementary water treatment methods. In order to permit industrial implementation, energy demand of these techniques needs to be minimized. To this end, we have developed an electrical discharge reactor where water treatment by dielectric barrier discharge (DBD) is combined with adsorption on activated carbon textile and additional ozonation. The reactor consists of a DBD plasma chamber, including the adsorptive textile, and an ozonation chamber, where the DBD generated plasma gas is bubbled. In the present paper, this reactor is further characterized and optimized in terms of its energy efficiency for removal of the five pesticides α-HCH, pentachlorobenzene, alachlor, diuron and isoproturon, with initial concentrations ranging between 22 and 430 μg/L. Energy efficiency of the reactor is found to increase significantly when initial micropollutant concentration is decreased, when duty cycle is decreased and when oxygen is used as feed gas as compared to air and argon. Overall reactor performance is improved as well by making it work in single-pass operation, where water is flowing through the system only once. The results are explained with insights found in literature and practical implications are discussed. For the used operational conditions and settings, α-HCH is the most persistent pesticide in the reactor, with a minimal achieved electrical energy per order of 8 kWh/m, while a most efficient removal of 3 kWh/m or lower was reached for the four other pesticides.

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Section: Effect Of Power At Constant Duty Cyclesupporting

confidence: 76%

Section: Dbd Water Treatment Reactor and Determination Of Solution Pamentioning

confidence: 99%

Section: Dbd Water Treatment Reactor and Determination Of Solution Pamentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Removal of several pesticides in a falling water film DBD reactor with activated carbon textile: Energy efficiency

et al. 2017

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“…The treatment of wastewater containing aromatic dyes is difficult because the aromatic structures of the dyes make them highly resistant to light, heat, and oxidizing agents [31,32]. Recently, a number of processes were proposed in the literature for mitigating dyes and other organic pollutants, and which are based on novel approaches such as use of the dielectric barrier discharge ozone reaction [33], membrane filtration [34], nanofiltration [35], biological treatment [36], and various electrochemical methods [37][38][39]. Treatments of dyes using electrochemical approaches are mainly focused on electrocoagulation and electrochemical oxidation since electrochemical reduction has the slowest discolouration effect [40].…”

Section: Introductionmentioning

confidence: 99%

Tailoring IONP shape and designing nanocomposite IONS@GN toward modification of SPCE to enhance electrochemical degradation of organic dye

Ognjanović

Stanković

Fábian

et al. 2020

Mater. Res. Express

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Iron oxide nanoparticles (IONP) with different distinctive morphologies (spherical, cubic, flower-like and needles) were utilized for modification of screen-printed carbon electrodes (SPCE) to be used for synthetic organic dye degradation by an electrochemical approach. This platform was implemented for removal of the synthetic organic dye, Reactive Black 5 (RB5) in aqueous solution. Modified SPCE with spherically shaped IONP (IONS) had the highest dye removal efficiency. Thus, IONS were then used for surface decoration of the most common carbon-based materials (graphene, graphene oxide, carboxylated graphene, graphene nanoribbons, graphene nanoplatelets, single-and multi-wall carbon nanotubes), and the nanocomposites formed were deposited on the electrode surfaces. Using IONS/ graphene composite (IONS@GN) for electrode modification resulted in the best effect. Removal of RB5 with this electrode was 51% better in comparison with bare SPCE, reducing the time required for complete dye degradation from 61 to 30 min Using IONS-modified SPCE, total RB5 removal occurred in 51 min, improving the performance by 16% over that of bare SPCE. The effects determined, i.e., the best IONP morphology and best type of carbon-based material for nanocomposite formation to enhance RB5 removal will provide guidelines for further modifications of SPCE with nanomaterials and nanocomposites, for application of this electrochemical approach in the degradation of organic pollutants.

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Degradation of gemfibrozil in aqueous solutions by gas–liquid dielectric barrier discharge plasma combined with CNTs/γFe₂O₃

Zhang

et al. 2021

Plasma Processes & Polymers

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The degradation effects and mechanism on gemfibrozil (GEM) in aqueous solution by dielectric barrier discharge (DBD) plasma combined with the catalyst CNTs/γFe 2 O 3 are investigated. The concentrations of plasmagenerated reactive species, including H 2 O 2 , O 3 , NO 3 − , and OH, are measured with spectrophotometric and fluorescent probes. The effects of the plasma treatment period, discharge power, initial GEM concentration, solution pH value, conductivity, and the catalytic property are studied on the degradation rate and energy efficiency. Compared with the sole plasma treatment, CNTs/ γFe 2 O 3 could maximally improve the GEM degradation rate and energy efficiency to 99.7% ± 0.2% and 76.5 ± 5.2 mg•kW −1 •h −1 , respectively. The solution's total organic carbon removal efficiency has been increased to 47.2% ± 2.7%. Meanwhile, the possible degradation pathways of the

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Removal of atrazine in water by combination of activated carbon and dielectric barrier discharge

Cited by 68 publications

References 37 publications

Removal of several pesticides in a falling water film DBD reactor with activated carbon textile: Energy efficiency

Removal of several pesticides in a falling water film DBD reactor with activated carbon textile: Energy efficiency

Tailoring IONP shape and designing nanocomposite IONS@GN toward modification of SPCE to enhance electrochemical degradation of organic dye

Degradation of gemfibrozil in aqueous solutions by gas–liquid dielectric barrier discharge plasma combined with CNTs/γFe₂O₃

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Removal of atrazine in water by combination of activated carbon and dielectric barrier discharge

Cited by 68 publications

References 37 publications

Removal of several pesticides in a falling water film DBD reactor with activated carbon textile: Energy efficiency

Removal of several pesticides in a falling water film DBD reactor with activated carbon textile: Energy efficiency

Tailoring IONP shape and designing nanocomposite IONS@GN toward modification of SPCE to enhance electrochemical degradation of organic dye

Degradation of gemfibrozil in aqueous solutions by gas–liquid dielectric barrier discharge plasma combined with CNTs/γFe2O3

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Degradation of gemfibrozil in aqueous solutions by gas–liquid dielectric barrier discharge plasma combined with CNTs/γFe₂O₃