Photo-assisted electroperoxone of 2,4-dichlorophenoxy acetic acid herbicide: Kinetic, synergistic and optimization by response surface methodology

Kermani, Majid; Mehralipour, Jamal; Kakavandi, Babak

doi:10.1016/j.jwpe.2019.100971

Cited by 25 publications

(12 citation statements)

References 39 publications

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“…The report by Zhaoxin Li et al [ 28 ] showed that via increasing ozone concentration in the degradation of refractory organic pollutants in landfill leachate, the efficiency of the process was improved and high performance earns in 154 mg/l O 3 . In Kermani et al [ 29 ] study reported that the high efficiency of EPP was obtained at slightly acidic pH.…”

Section: Resultsmentioning

confidence: 99%

Optimization of UV-Electroproxone procedure for treatment of landfill leachate: the study of energy consumption

Kermani

Shahsavani

Ghaderi

et al. 2021

J Environ Health Sci Engineer

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With increased population, treatment of solid waste landfill and its leachate is of major concern. Municipal landfill leachate shows variable, heterogeneous and incontrollable characteristics and contains wide range highly concentrated organic and inorganic compounds, in which hampers the application of a solo method in its treatment. Among different approaches, biological treatment can be used, however it is not effective enough to elimination all refractory organics, containing fulvic-like and humic-like substance. In this experimental study, the UV Electroperoxone process as a hybrid procedure has been employed to treat landfill leachate. The effect of various parameters such as pH, electrical current density, ozone concentration, and reaction time were optimized using central composite design (CCD). In the model fitting, the quadratic model with a P-Value less than 0.5 was suggested (< 0.0001). The R2, R2 adj, and R2 pre were determined equal to 0.98,0.96, and 0.91 respectively. Based on the software prediction, the process can remove 83% of initial COD, in the optimum condition of pH = 5.6, ozone concentration of 29.1 mg/l. min, the current density of 74.7 mA/cm2, and process time of 98.6 min. In the optimum condition, 55/33 mM H2O2 was generated through electrochemical mechanism. A combination of ozonation, photolysis and electrolysis mechanism in this hybrid process increases COD efficiency removal up 29 percent which is higher than the sum of separated mechanisms. Kinetic study also demonstrated that the UV-EPP process follows pseudo-first order kinetics (R2 = 0.99). Based on our results, the UV-EPP process can be informed as an operative technique for treatment of old landfills leachates. Graphical abstract

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Section: Resultsmentioning

confidence: 99%

Optimization of UV-Electroproxone procedure for treatment of landfill leachate: the study of energy consumption

Kermani

Shahsavani

Ghaderi

et al. 2021

J Environ Health Sci Engineer

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“…Electrochemical oxidation has known a great attention because of its performance in treating large variety of wastewater effectively (Gilpavas et al, 2020). Electrochemical oxidation can be outlined as follows: chlorine/hydrochloride acid is generated after anodic oxidation of chloride (Equations and ); after that, chlorine/hydrochloride acid act to remove wastewater color (Equation ) and enhance the degradation of different pollutants because of their strong oxidation feature (Ghanbari et al, 2020; Kermani et al, 2019; Torres et al, 2019).

Anode : 2 {Cl}^{-} \to {Cl}_{2} goodbreak+ 2 e^{-}

Solution : {Cl}_{2} goodbreak+ H_{2} O \to italicHClO goodbreak+ normalH italicCl

Solution : italicDye goodbreak+ italicHClO \to italicOxidizeddye goodbreak+ 2 {Cl}^{-}

Anaerobic membrane reactor (MBR) was very efficient for textile wastewater treatment in terms of color removal (Ümmü et al, 2016; Xu et al, 2018).…”

Section: Introductionmentioning

confidence: 99%

“…Electrochemical oxidation has known a great attention because of its performance in treating large variety of wastewater effectively (Gilpavas et al, 2020). Electrochemical oxidation can be outlined as follows: chlorine/ hydrochloride acid is generated after anodic oxidation of chloride (Equations 1 and 2); after that, chlorine/ hydrochloride acid act to remove wastewater color (Equation 3) and enhance the degradation of different pollutants because of their strong oxidation feature (Ghanbari et al, 2020;Kermani et al, 2019;Torres et al, 2019).…”

Section: Introductionmentioning

confidence: 99%

“…Several processes are suggested; however, extensive studies should be carried out to establish the best techniques for pollution prevention (Sahinkaya et al, 2019). However, some disadvantages, namely, necessity of longer treatment and greater energy consumption, high consumption of catalyst and oxidant degree, and slow degradation for an efficient treatment have completely limited their potential in real applications (Kakavandi & Ahmadi, 2019;Kermani et al, 2019). Large amounts of water are used in the textile industry (Shindhal et al, 2021).…”

Section: Introductionmentioning

confidence: 99%

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Water recovery from yarn fabric dyeing wastewater using electrochemical oxidation and membrane processes

Bouchareb¹,

Bilici

Dizge

2022

Water Environment Research

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This study intended to evaluate and compare the efficiency of electrochemical oxidation (EO), nanofiltration (NF), and reverse osmosis (RO) membranes processes in the treatment of yarn fabric dyeing wastewater (YFDW) in terms of chemical oxygen demand (COD) removal, color removal, salinity reduction, and conductivity removal. EO tests of the textile effluent were conducted under various current densities and solution pH conditions employing a graphite electrode. Membrane filtration experiments were conducted using two different NF membranes: NP010 and NP030 and two distinct RO membranes: BW30 and SW30 flat-sheet membranes. The experimental results showed that NF membrane process is not suitable for yarn fabric wastewater treatment showing low removal efficiencies for COD, color, and conductivity. However, both EO and RO membranes could reduce COD and color to high removal performances. EO results showed more than 99% of color removal and 80% of COD elimination at pH = 6 and current density of 50 mA/cm 2 after 180 min of reaction. Using RO membrane for yarn fabric wastewater treatment demonstrated relatively complete removal of color concentration and 98% of COD elimination. However, EO process showed less performance in conductivity removal efficiency compared to the RO membranes. EO treatment of YFDW decreased conductivity by 31.2%, whereas RO membrane process reduced conductivity to a greater extent and recorded 97.1% of removal elimination percentage. Therefore, the treated water by RO membrane could be recycled back to the process such as washing and dyeing, in that way offering economic profits by decreasing water consumption and wastewater treatment cost. Practitioner Points• Electrochemical oxidation and membrane filtration processes were combined for the treatment of yarn fabric dyeing wastewater (YFDW).• A 100% color removal of color and 98.5% COD elimination efficiencies were obtained for the electrochemical oxidation (EO) + RO combined process.• EO treatment of YFDW decreased conductivity by 32.7%, whereas the RO membrane process reduced conductivity to a greater extent and recorded 97.7% of removal elimination percentage.

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“…Nonetheless, homogeneous electro-Fenton and photoelectro-Fenton techniques catalyzed degradation of persistent organic pollutants only under acidic media, and its alternative heterogeneous techniques could conduct full mineralization of same pollutants under neutral pH [15]. In this circumstance, hybrid electro-peroxone (EP) and photoelectro-peroxone (PEP) have been accredited for wastewater treatment under alkaline, neutral, acidic pH, posed good disintegration, and mineralization rates [16][17][18]. As a matter of fact, EAOPs are hybrid approaches, which have been constructed by integrating two or more practices for enhanced ȮH formation to accelerate abatement of pollutants in wastewater [19].…”

Section: Introductionmentioning

confidence: 99%

Electro-Peroxone and Photoelectro-Peroxone Hybrid Approaches: An Emerging Paradigm for Wastewater Treatment

Fatima¹,

Fazal²,

Shaheen³

2022

Wastewater Treatment

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Electrochemical advanced oxidation practices (EAOPs), remarkably, electro-peroxone (EP), photoelectro-peroxone (PEP), and complementary hybrid EP approaches, are emerging technologies on accountability of complete disintegration and elimination of wide spectrum of model pollutants predominantly biodegradable, recalcitrant, and persistent organic pollutants by engendering powerful oxidants in wastewater. A concise mechanism of EP and PEP approaches along with their contribution to free radical formation are scrutinized. Furthermore, this chapter provides a brief review of EP, PEP, and complementary hybrid EP-based EAOPs that have pragmatically treated laboratory-scale low- and high-concentrated distillery biodigester effluent, refractory pharmaceutical, textile, herbicides, micropollutant, organic pollutant, acidic solution, landfill leachates, municipal secondary effluents, hospital, and industries-based wastewater. Afterward, discussion has further extended to quantitatively evaluate energy expenditures in terms of either specific or electrical energy consumptions for EP and PEP practices through their corresponding equations.

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Photo-assisted electroperoxone of 2,4-dichlorophenoxy acetic acid herbicide: Kinetic, synergistic and optimization by response surface methodology

Cited by 25 publications

References 39 publications

Optimization of UV-Electroproxone procedure for treatment of landfill leachate: the study of energy consumption

Optimization of UV-Electroproxone procedure for treatment of landfill leachate: the study of energy consumption

Water recovery from yarn fabric dyeing wastewater using electrochemical oxidation and membrane processes

Electro-Peroxone and Photoelectro-Peroxone Hybrid Approaches: An Emerging Paradigm for Wastewater Treatment

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