Efficient Removal Performance of COD in Real Laundry Wastewater via Conventional and Photo-Fenton Degradation Systems: A Comparative Study on Oxidants and Operating Time by H2O2/Fe2+

Cüce, Hüseyin; Temel, Fulya Aydın

doi:10.1007/s13369-023-07652-9

Cited by 10 publications

(4 citation statements)

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“…•OH + H2O2 → H2O + HO2 (10) The depletion of radicals increases and the frequency of collisions between radicals and OPD molecules decreases, resulting in a decrease in η of the OPD solution [32,33]. As the reaction proceeds, the depletion of •OH in the system results in a reduced rate of η growth.…”

Section: Influence Of the Initial Reaction Temperaturementioning

confidence: 99%

“…This technology mainly involves Fenton- [5], ozone- [6], electrochemical- [7] and microwave-assisted [8], as well as photocatalytic, oxidations [9]. Of these, the Fenton process is the most commonly utilized wastewater oxidation technology owing to its convenient dosing and high oxidizing capacity [10,11]. The Fenton reaction is a Fenton reagent composed of ferrous ions and oxidant H 2 O 2 , which produces a short but extremely active substance, namely hydroxyl radical (•OH), which has a significant oxidizing ability to convert pollutants into non-toxic products, including CO 2 and H 2 O.…”

Section: Introductionmentioning

confidence: 99%

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Exothermic Reaction in the Cleaning of Wastewater by a Fe2O3/Coconut Shell Activated Carbon/H2O2 Heterogeneous Fenton-like System

Zhang,

Yan

2024

Sustainability

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Energy utilization in wastewater degradation has important implications for sustainability; however, efficient multiphase Fenton-like catalysts are still needed. In this study, a heterogeneous Fe2O3/coconut shell activated carbon (CSAC) Fenton-like catalyst was prepared and evaluated with respect to degradation performance and exothermic reaction for the treatment of organic wastewater. Fe2O3@CSAC retained the porous morphology of CSAS, and Fe2O3 was uniformly loaded on the surface of CSAS. In the reaction system, the degradation rate of wastewater was higher and a large amount of heat was released; therefore, it could be applied to the energy recovery from wastewater source heat pump technology. The degradation rate of 300 mL of o-phenylenediamine solution with a concentration of 0.04 mol·L−1 was 89.0% under 0.25 mol·L−1 H2O2, 532 g·L−1 Fe2O3@CSAC, pH 7.1, and an initial reaction temperature of 30 °C, elevated to 7.9 °C. These findings clearly demonstrate the degradation performance and exothermic laws of the Fe2O3@CSAC/H2O2 multiphase Fenton-like system.

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Section: Influence Of the Initial Reaction Temperaturementioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Exothermic Reaction in the Cleaning of Wastewater by a Fe2O3/Coconut Shell Activated Carbon/H2O2 Heterogeneous Fenton-like System

Zhang,

Yan

2024

Sustainability

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“…Experimental optimization is necessary to determine the ideal H2O2 concentration for a specific electro-Fenton system, taking into account the characteristics of the pollutants and the system design. In the studies on Fenton (Cüce & Aydın Temel, 2023)and electrofenton (Boopathy & Das, 2018), it has been observed that the increase in H2O2 addition increases the removal efficiency up to a certain value, but after a certain point, it has a negative effect in a decreasing direction.…”

Section: Influence Of Voltage and H2o2mentioning

confidence: 99%

Optimization of electro-Fenton process variables in terms of dye removal and energy consumption with response surface methodology

Karabacakoğlu,

Karaduman

2023

Preprint

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Waste water containing reactive textile dyes constitutes an important environmental problem as they are permanent and dangerous. The Electro-Fenton (EF) method is promising as an effective technique for the degradation of organic materials such as dyestuffs. In this study, the optimization of effective variables in the removal of reactive yellow 145 azo textile dye by the EF using response surface methodology (RSM) was investigated. Central composite design (CCD) was used to study the combined effects of key parameters such as voltage (2.5–12.5 V), H2O2 addition (0.1–1.3 mL), pH (1.75–4.75), electrode spacing (0.25–3.25 cm), and treatment time (25–85 min). The optimum values of the variables to ensure the highest dye removal efficiency (approx. 93%) with the lowest energy consumption (approx. 3.4 Wh/L) are approximately 9.4 V voltage, pH 3.7, 2.5 cm electrode range, 1 mL H2O2 addition, and a 40-minute treatment time. ANOVA analysis of the predicted quadratic polynomial model showed a regression coefficient value of approximately 0.97 for both objective functions; this highlights the applicability of the model for navigating the design space. Simultaneous optimization of process parameters using RSM was achieved with a low number of experiments.

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“…Experimental optimization is necessary to determine the ideal H2O2 concentration for a specific electro-Fenton system, taking into account the characteristics of the pollutants and the system design. In the studies on Fenton (Cüce and Aydın Temel, 2023)and electrofenton (Boopathy and Das, 2018), it has been observed that the increase in H2O2 addition increases the removal efficiency up to a certain value, but after a certain point, it has a negative effect in a decreasing direction. Electrode distance can affect the efficiency of dye removal by influencing current density, mass transport, and the formation and diffusion of reactive species in solution.…”

Section: Influence Of Voltage and H2o2mentioning

confidence: 99%

Efficient Removal of Reactive Textile Dye using Electro-Fenton Process: Response Surface Methodology Approach

Karabacakoğlu

Karaduman

2023

Preprint

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Electro-Fenton (EF) is a system where electrooxidation and electrocoagulation come together. In the EF method, it is aimed at creating OH radicals in an electrochemical cell by catalyzing H2O2 with Fe2+ ions. In this study, optimization of process variables for the removal of reactive azo dye (reactive yellow 145) from aqueous solution by the electro-Fenton method was carried out using response surface methodology. The percentage of dye removal and energy consumption were selected as the response functions for the 5 variables determined as voltage, H2O2 concentration, pH, electrode spacing, and processing time. As a result of 32 experiments determined by the Design Expert 13 program, the effect of variables on response functions was examined separately and together. 10 V voltage to 99.4%, which is the highest removal; pH 2.5; 1 cm electrode range; 1 mL H2O2 addition; and 22.16 Wh/L energy consumption in a 70-min treatment time were reached. The optimum values of the variables proposed by the program to ensure the highest dye removal efficiency (approximately 93%) and the lowest energy consumption (approx. 3.4 Wh/L) are approximately 9.4 V voltage, pH 3.7, 2.5 cm electrode range, 1 mL H2O2 addition, and a 40-minute treatment time.

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Efficient Removal Performance of COD in Real Laundry Wastewater via Conventional and Photo-Fenton Degradation Systems: A Comparative Study on Oxidants and Operating Time by H2O2/Fe2+

Cited by 10 publications

References 50 publications

Exothermic Reaction in the Cleaning of Wastewater by a Fe2O3/Coconut Shell Activated Carbon/H2O2 Heterogeneous Fenton-like System

Exothermic Reaction in the Cleaning of Wastewater by a Fe2O3/Coconut Shell Activated Carbon/H2O2 Heterogeneous Fenton-like System

Optimization of electro-Fenton process variables in terms of dye removal and energy consumption with response surface methodology

Efficient Removal of Reactive Textile Dye using Electro-Fenton Process: Response Surface Methodology Approach

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