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Journal articles on the topic 'Electro-Fenton process'

Author: Grafiati

Published: 4 June 2021

Last updated: 6 February 2022

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1

Bounab, Loubna, Olalla Iglesias, Elisa González-Romero, Marta Pazos, and M. Ángeles Sanromán. "Effective heterogeneous electro-Fenton process of m-cresol with iron loaded actived carbon." RSC Advances 5, no. 39 (2015): 31049–56. http://dx.doi.org/10.1039/c5ra03050a.

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2

Oonnittan, Anshy, and Mika E.T. Sillanpaa. "Water Treatment by Electro-Fenton Process." Current Organic Chemistry 16, no. 18 (September 1, 2012): 2060–72. http://dx.doi.org/10.2174/138527212803532413.

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3

Yu, Tian, and Carmel B. Breslin. "Graphene-Modified Composites and Electrodes and Their Potential Applications in the Electro-Fenton Process." Materials 13, no. 10 (May 14, 2020): 2254. http://dx.doi.org/10.3390/ma13102254.

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In recent years, graphene-based materials have been identified as an emerging and promising new material in electro-Fenton, with the potential to form highly efficient metal-free catalysts that can be employed in the removal of contaminants from water, conserving precious water resources. In this review, the recent applications of graphene-based materials in electro-Fenton are described and discussed. Initially, homogenous and heterogenous electro-Fenton methods are briefly introduced, highlighting the importance of the generation of H2O2 from the two-electron reduction of dissolved oxygen and its catalysed decomposition to produce reactive and oxidising hydroxy radicals. Next, the promising applications of graphene-based electrodes in promoting this two-electron oxygen reduction reaction are considered and this is followed by an account of the various graphene-based materials that have been used successfully to give highly efficient graphene-based cathodes in electro-Fenton. In particular, graphene-based composites that have been combined with other carbonaceous materials, doped with nitrogen, formed as highly porous aerogels, three-dimensional materials and porous gas diffusion electrodes, used as supports for iron oxides and functionalised with ferrocene and employed in the more effective heterogeneous electro-Fenton, are all reviewed. It is perfectly clear that graphene-based materials have the potential to degrade and mineralise dyes, pharmaceutical compounds, antibiotics, phenolic compounds and show tremendous potential in electro-Fenton and other advanced oxidation processes.

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4

Bellakhal, Nizar, Mehmet A. Oturan, Nihal Oturan, and Mohamed Dachraoui. "Olive Oil Mill Wastewater Treatment by the Electro-Fenton Process." Environmental Chemistry 3, no. 5 (2006): 345. http://dx.doi.org/10.1071/en05080.

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Environmental Context. The combination of the Fenton’s reagent with electrochemistry (the electro-Fenton process) represents an efficient method for wastewater treatment. This study describes the use of this process to clean olive oil mill wastewater, which is a real environmental problem in Mediterranean countries. Contrary to the conventional methods which reduce the pollution by removing the pollutants from the wastewater, the electro-Fenton process is shown to fully destroy (mineralize) olive oil mill wastes in water without previous extraction and without addition of chemical reagents. Abstract. Treatment of olive oil mill wastewater is one of the most important environmental problems for Mediterranean countries. This wastewater contains many organic compounds like polyphenols, which are very difficult to treat by classical techniques. An advanced electrochemical oxidation process, the electro-Fenton process, has been used as a way of removing chemical oxygen demand and colour intensity from olive oil mill wastewater. Vanillic acid, which has been selected as a model compound, and olive oil mill wastewater have been completely mineralized by the electro-Fenton process with a carbon felt cathode, using Fe2+ ions as the catalyst.

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5

Renita, A. Annam, S. Sai Bhargav, and Evin Joy. "Advanced Oxidation Process by Electro-Fenton Reagent." Advanced Materials Research 984-985 (July 2014): 159–63. http://dx.doi.org/10.4028/www.scientific.net/amr.984-985.159.

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This paper deals with the advanced oxidation using Electro-fenton reagent for the degradation of azo-dyes in textile effluents. Discharge of textile effluents causes inevitable pollution of water resources which calls for further treatment methods. In this experiment, textile effluent samples were treated with iron electrodes with the reagents, hydrogen peroxide and ferrous sulfate .The acid dye effluents which were used in this study are Acid Orange 7, Acid Red 88, and Acid Violet 7. The temperature was set to 40° C. Samples of 20 ml were analyzed for Biological Oxygen Demand (BOD), Chemical Oxygen Demand (COD) and Colour reduction. Experiments were carried out at voltage variations of 2, 4, 6 and 8 volts. From the results, COD and Colour were observed to be reduced drastically from respective original values before treatment with Fenton’s reagent using electro-chemical method.Keywords--- Advanced oxidation, Electro-fenton, BOD, COD, Colour reduction

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6

Chu, C. L., T. Hu, S. L. Wu, Y. P. Pu, C. Y. Chung, K. W. K. Yeung, and Paul K. Chu. "Effects of Electro-Fenton Process on Blood Compatibility and Nickel Suppression of NiTi Shape Memory Alloy." Advanced Materials Research 47-50 (June 2008): 314–17. http://dx.doi.org/10.4028/www.scientific.net/amr.47-50.314.

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Electro-Fenton process as a modified Fenton’s oxidation method in waster water treatment can provide a stable hydroxyl radical (·OH) source by continuous reaction of electrochemically generated H2O2 with Fe2+ ions for surface oxidation modification of NiTi shape memory alloy (SMA). In this work, effects of electro-Fenton process on blood compatibility and nickel suppression of NiTi SMA were investigated by SEM and XPS, inductively-coupled plasma mass spectrometry (ICPMS), hemolysis analysis and blood platelet adhesion test. It is found that electro-Fenton process is a notably effective way to impede out-diffusion of Ni from NiTi SMA in simulated body fluids during the entire ten week immersion period. It can also improve the hemolysis resistance and thromboresistance of biomedical NiTi SMA. The improvement of blood compatibility and nickel suppression of NiTi SMA can be attributed to the formation of surface titania film with a Ni-free zone near its top surface by electro-Fenton process.

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7

Pozza, Anna da, Paola Ferrantelli, Carlo Merli, and Elisabetta Petrucci. "Oxidation efficiency in the electro-Fenton process." Journal of Applied Electrochemistry 35, no. 4 (April 2005): 391–98. http://dx.doi.org/10.1007/s10800-005-0801-1.

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8

Elaoud, Sourour Chaâbane, Marco Panizza, Giacomo Cerisola, and Tahar Mhiri. "Coumaric acid degradation by electro-Fenton process." Journal of Electroanalytical Chemistry 667 (February 2012): 19–23. http://dx.doi.org/10.1016/j.jelechem.2011.12.013.

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9

Hurtado, Lourdes, Deysi Amado-Piña, Gabriela Roa-Morales, Ever Peralta-Reyes, Eduardo Martin del Campo, and Reyna Natividad. "Comparison of AOPs Efficiencies on Phenolic Compounds Degradation." Journal of Chemistry 2016 (2016): 1–8. http://dx.doi.org/10.1155/2016/4108587.

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In this work, a comparison of the performances of different AOPs in the phenol and 4-chlorophenol (4-CP) degradation at lab and pilot scale is presented. It was found that, in the degradation of phenol, the performance of a coupled electro-oxidation/ozonation process is superior to that observed by a photo-Fenton process. Phenol removal rate was determined to be 0.83 mg L−1 min−1 for the coupled process while the removal rate for photo-Fenton process was only 0.52 mg L−1 min−1. Regarding 4-CP degradation, the complete disappearance of the molecule was achieved and the efficiency decreasing order was as follows: coupled electro-oxidation/ozonation > electro-Fenton-like process > photo-Fenton process > heterogeneous photocatalysis. Total organic carbon was completely removed by the coupled electro-oxidation/ozonation process. Also, it was found that oxalic acid is the most recalcitrant by-product and limits the mineralization degree attained by the technologies not applying ozone. In addition, an analysis on the energy consumption per removed gram of TOC was conducted and it was concluded that the less energy consumption is achieved by the coupled electro-oxidation/ozonation process.

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10

Fernández de Dios, Maria Ángeles, Olaia Iglesias, Marta Pazos, and Maria Ángeles Sanromán. "Application of Electro-Fenton Technology to Remediation of Polluted Effluents by Self-Sustaining Process." Scientific World Journal 2014 (2014): 1–8. http://dx.doi.org/10.1155/2014/801870.

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The applicability of electro-Fenton technology to remediation of wastewater contaminated by several organic pollutants such as dyes and polycyclic aromatic hydrocarbons has been evaluated using iron-enriched zeolite as heterogeneous catalyst. The electro-Fenton technology is an advanced oxidation process that is efficient for the degradation of organic pollutants, but it suffers from the high operating costs due to the need for power investment. For this reason, in this study microbial fuel cells (MFCs) were designed in order to supply electricity to electro-Fenton processes and to achieve high treatment efficiency at low cost. Initially, the effect of key parameters on the MFC power generation was evaluated. Afterwards, the degradation of Reactive Black 5 dye and phenanthrene was evaluated in an electro-Fenton reactor, containing iron-enriched zeolite as catalyst, using the electricity supplied by the MFC. Near complete dye decolourization and 78% of phenanthrene degradation were reached after 90 min and 30 h, respectively. Furthermore, preliminary reusability tests of the developed catalyst showed high degradation levels for successive cycles. The results permit concluding that the integrated system is adequate to achieve high treatment efficiency with low electrical consumption.

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11

Ali, Noralisya, Chee Yeoh, Seng Lau, and Meng Tay. "An enhanced treatment efficiency for diluted palm oil mill effluent using a photo-electro-fenton hybrid system." Journal of the Serbian Chemical Society 84, no. 5 (2019): 517–26. http://dx.doi.org/10.2298/jsc181016103a.

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Photocatalysis, electrolysis and Fenton process are three important advanced oxidation processes (AOPs) which produce hydroxyl radical in order to degrade organic matter in wastewater within 4-6 hours under ambient conditions. A photocatalysis, electrolysis and Fenton (photo-electro-Fenton) process hybrid system has been carried out to treat the diluted palm oil mill effluent (POME) in this study. An electrolytic cell was set up with a stainless steel anode and a platinum wire cathode with the applied cell voltage of 1.5 V. The diluted POME was then treated in the cell with the mixture of titanium oxide as the photocatalyst, sodium sulfate solution as the electrolyte, hydrogen peroxide and iron sulfate as the Fenton reagents. The effects on the duration, pH, concentration of TiO2 and different light conditions on the removal efficiency of the chemical oxygen demand (COD) of the diluted POME were studied. The optimal conditions for the photo-electro-Fenton hybrid system were found to be 4 hr contact time at pH 4 with 60 mg/L TiO2 under sunlight. With such conditions, the COD removal efficiency was able to achieve 97 %. On the other hand, the photo-electro-Fenton hybrid system gave the highest COD removal efficiency, compared to the electro-Fenton hybrid system, Fenton and photocatalyst, respectively.

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12

Chen, Lei, Zhi Zhou, Chaofeng Shen, and Yilu Xu. "Inactivation of antibiotic-resistant bacteria and antibiotic resistance genes by electrochemical oxidation/electro-Fenton process." Water Science and Technology 81, no. 10 (May 15, 2020): 2221–31. http://dx.doi.org/10.2166/wst.2020.282.

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Abstract Antibiotic-resistant bacteria (ARB) and antibiotic resistance genes (ARGs) in the environment are of great concern due to their potential risk to human health. The effluents from wastewater treatment plants and livestock production are major sources of ARB and ARGs. Chlorination, UV irradiation, and ozone disinfection cannot remove ARGs completely. In this study, the potential of electrochemical oxidation and electro-Fenton processes as alternative treatment technologies for inactivation of ARB and ARGs in both intracellular and extracellular forms was evaluated. Results showed that the electrochemical oxidation process was effective for the inactivation of selected ARB but not for the removal of intracellular ARGs or extracellular ARGs. The electro-Fenton process was more effective for the removal of both intracellular and extracellular ARGs. The removal efficiency after 120 min of electro-Fenton treatment under 21.42 mA/cm2 was 3.8 logs for intracellular tetA, 4.1 logs for intracellular ampC, 5.2 logs for extracellular tetA, and 4.8 logs for extracellular ampC, respectively in the presence of 1.0 mmol/L Fe2+. It is suggested that electrochemical oxidation is an effective disinfection method for ARB and the electro-Fenton process is a promising technology for the removal of both intracellular and extracellular ARGs in wastewater.

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13

Gozmen, Belgin, Ozgur Sonmez, and Azize Sozutek. "Comparative mineralization of Basic Red 18 with electrochemical advanced oxidation processes." Journal of the Serbian Chemical Society 83, no. 1 (2018): 93–105. http://dx.doi.org/10.2298/jsc170227095g.

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In this study, the role of electrochemical oxidation processes, including the electro-Fenton, the electro-persulfate (PS), and the electro/FeII /PS processes, in the removal of Basic Red 18 (BR18) from aqueous solutions was investigated. It was found that the electro-PS process successfully removes colour, but after 5 h, it produced only 75 % mineralization. In the same conditions, more effective mineralization was achieved by the electro/FeII/PS process than by the electro-Fenton method. At pH levels of 3.0 and 5.7, very effective mineralization results were produced by the electro/FeII/PS process. Moreover, the maximum mineralization current efficiency values were obtained by the electro/ FeII/PS process. The mineralization efficiency of the electro/FeII/PS process was determined to be 97 % under the following conditions: BR18 initial dye concentration of 100 mg L-1, pH of 5.7, contact time of 5 h, PS concentration of 10 mM, Fe2+ concentration of 0.2 mM, and a sodium sulfate concentration of 0.05 M.

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14

Li, Shan Ping, Xiang Ru Ma, Xiao Hong Cao, and Yan Wen Dong. "Electro-Catalytic Degradation of Nitenpyram Wastewater Using C/PTFE Gas Diffusion Electrode." Advanced Materials Research 699 (May 2013): 747–52. http://dx.doi.org/10.4028/www.scientific.net/amr.699.747.

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Oxidation of nitenpyram in aqueous media by electro-Fenton process using carbon/polytetrafluoroethylene (C/PTFE) O2-fed cathode has been studied in this article. ABO3 perovskite was used in electrode as catalyst of improving Fenton reaction efficiency. And the parameters for nitenpyram degradation with the electrode were determined by Central Composite Design-Response Surface Methodology. Current intensity 0.35A and pH 3.34 provided the optimum catalytic degradation. Furthermore, the main degradation intermediates formed during electro-Fenton oxidation treatment were studied with liquid chromatography and mass spectroscopy (LC-MS) method. The main aromatic intermediates of electro-Fenton reaction were allowed to compose a complete mineralization pathway.

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15

Marlina, Elin, and Purwanto. "Electro-Fenton for Industrial Wastewater Treatment: A Review." E3S Web of Conferences 125 (2019): 03003. http://dx.doi.org/10.1051/e3sconf/201912503003.

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Electro-Fenton is part of electrochemical advanced oxidation processes (EAOPs) which have been widely used to treat various types of waste such as color, drugs, phenol compounds, leachate, surfactants, and others. This article focuses on the effects of various operating parameters and recent developments in the electro-Fenton process, and then their optimum ranges for maximum pollutant removal and various pollutants removed by this process is observed.

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16

Kim, Dong-Seog, and Young-Seek Park. "Electrochemical Degradation of Phenol by Electro-Fenton Process." Korean Journal of Environmental Health Sciences 35, no. 3 (June 30, 2009): 201–8. http://dx.doi.org/10.5668/jehs.2009.35.3.201.

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17

Naimi, I., and N. Bellakhal. "Removal of 17β-Estradiol by Electro-Fenton Process." Materials Sciences and Applications 03, no. 12 (2012): 880–86. http://dx.doi.org/10.4236/msa.2012.312128.

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18

He, Huanqi, and Zhi Zhou. "Electro-Fenton process for water and wastewater treatment." Critical Reviews in Environmental Science and Technology 47, no. 21 (November 2, 2017): 2100–2131. http://dx.doi.org/10.1080/10643389.2017.1405673.

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19

Divyapriya, Govindaraj, and Puthiya Veetil Nidheesh. "Importance of Graphene in the Electro-Fenton Process." ACS Omega 5, no. 10 (March 6, 2020): 4725–32. http://dx.doi.org/10.1021/acsomega.9b04201.

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20

Edelahi, Mohamed C., Nihal Oturan, Mehmet A. Oturan, Yann Padellec, Alain Bermond, and Kacem El Kacemi. "Degradation of diuron by the electro-Fenton process." Environmental Chemistry Letters 1, no. 4 (April 1, 2003): 233–36. http://dx.doi.org/10.1007/s10311-003-0052-5.

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21

Özcan, Ali, Yücel Şahin, A. Savaş Koparal, and Mehmet A. Oturan. "Degradation of picloram by the electro-Fenton process." Journal of Hazardous Materials 153, no. 1-2 (May 2008): 718–27. http://dx.doi.org/10.1016/j.jhazmat.2007.09.015.

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22

Djafarzadeh, Nader. "Mineralization of an Azo Dye Reactive Red 195 by Advanced Electrochemical Electro-Fenton Process." International Journal of Chemical Engineering and Applications 7, no. 4 (August 2016): 217–20. http://dx.doi.org/10.18178/ijcea.2016.7.4.576.

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23

Du, Song, and Wenbiao Jin. "Development of a cost-effective wastewater treatment process: combination of different process." E3S Web of Conferences 233 (2021): 01106. http://dx.doi.org/10.1051/e3sconf/202123301106.

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Caprolactam wastewater produced by the production process of caprolactam is characterized by a very high toxicity and chemical oxygen demand (COD) values, having potential harm to the environment if treated improperly. However, these characteristics make caprolactam wastewaters difficult to treat using traditional methods. So the aim of this work was to develop a cost-effective caprolactam wastewater treatment process. Fenton oxidation, sequencing batch reactor activated sludge process (SBR) and electro-catalytic oxidation were proposed to treat caprolactam wastewater in the laboratory scale, and the treatment effects were investigated. Compared with Fenton oxidation, SBR and electro-catalytic oxidation can treat caprolactam wastewater at a lower cost and more efficiently. The pilot test results indicate that the COD can be decreased to less than 1000 mg/L by the combination process, and when the COD removal rates maintain 90%, the cost of caprolactam wastewater treatment is below 6 yuan/m3. The combination process showed better economic benefit.

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24

Chen, Zhan Li, Xiao Hua Huang, Xiang Rong Sun, and Liang Li. "Comparative Study of the Degradation of Real Dyestuff Effluents by Three Kinds of Electrolysis Methods." Applied Mechanics and Materials 253-255 (December 2012): 943–48. http://dx.doi.org/10.4028/www.scientific.net/amm.253-255.943.

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A comparative study of three kinds of electrolysis methods: indirect electro-oxidation, electro-flocculation and electro-Fenton, as pre-treatment processes for a real dyestuff wastewater with high salinity and unbiodegradable organics were investigated. The efficiency of each method was evaluated according to the reduction levels of COD and toxicity, as well as biodegradability improvement. The results indicate electro-Fenton process as the most efficient pre-treatment method for improving biodegradability, reducing toxicity, and removing organic pollutants from dyestuff wastewater.

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25

Zhang, Jin, and Huan Wang. "Study on mechanism of algal inactivation and pollution removal by Fe-ACF electro Fenton-like process." Water Science and Technology 72, no. 10 (July 21, 2015): 1700–1712. http://dx.doi.org/10.2166/wst.2015.388.

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Algae inactivation and algal metabolic pollutant removal of Chlorella and Duneliella salina from seawater by the Fe-ACF electro Fenton-like process has been studied. The experiments were conducted at neutral condition of pH 8.3 (raw water) and 6.2 to break through the limit of strong acidic conditions. Experimental results indicated that the Fe-ACF electro Fenton-like process has a good effect for algae inactivation and for pollutant removal in neutral conditions, and pH has no obvious effect for the inactivation of algae. At optimum conditions, the inactivation efficiency for algae could reach up to 98%. A pH of 8.3 is more favorable for pollutant removal. Under neutral pH conditions, the coupling effect of indirect oxidation of •OH, direct oxidation of free chlorine and coagulation and adsorption of ferric and ferrous hydroxy complexes in the electro Fenton-like process was achieved, and the coupling effect promotes the inactivation of algae and the removal of metabolic pollutants.

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26

Huang, Yao-Hui, Shanshan Chou, Ming-Ging Perng, Gaw-Hao Huang, and Sheng-Shung Cheng. "Case study on the bioeffluent of petrochemical wastewater by electro-fenton method." Water Science and Technology 39, no. 10-11 (May 1, 1999): 145–49. http://dx.doi.org/10.2166/wst.1999.0644.

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The electro-Fenton method, in which ferrous ion is produced at the anode and used as a catalyst of H2O2, was applied for treating the bioeffluent of petrochemical manufacturing wastewater. The major pollutant in the bioeffluent was identified as hexamine, which was nonbiodegradable and contributed 65% of COD. The goal of this study was to treat the biotreatment effluent with more than 50% of COD removal efficiency. Oxidants that involved ozone, ozone/H2O2, sodium hypochlorite, and Fenton's reagent were employed to treat this effluent by jar tests. However, none could meet the goal in the range of operating conditions used. On the other hand, more than 80% of COD was removed with the electro-Fenton process. These screening tests indicated that only the electro-Fenton process was compatible with the goal.

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27

Vázquez, Armando, Lucía Alvarado, Isabel Lázaro, Roel Cruz, José Luis Nava, and Israel Rodríguez-Torres. "A Comparative Analysis of 2-(Thiocyanomethylthio)-Benzothiazole Degradation Using Electro-Fenton and Anodic Oxidation on a Boron-Doped Diamond Electrode." International Journal of Photoenergy 2018 (2018): 1–9. http://dx.doi.org/10.1155/2018/5290975.

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2-(Thiocyanomethylthio)-benzothiazole (TCMTB) is used as fungicide in the paper, tannery, paint, and coatings industries, and its study is important as it is considered toxic to aquatic life. In this study, a comparison of direct anodic oxidation (AO) using a boron-doped diamond electrode (BDD) and electro-Fenton (EF) processes for TCMTB degradation in acidic chloride and sulfate media using a FM01-LC reactor was performed. The results of the electrolysis processes studied in the FM01-LC reactor showed a higher degradation of TCMTB with the anodic oxidation process than with the electro-Fenton process, reaching 81% degradation for the former process versus 47% degradation for the latter process. This difference was attributed to the decrease in H2O2 during the EF process, due to parallel oxidation of chlorides. The degradation rate and current efficiency increased as a function of volumetric flow rate, indicating that convection promotes anodic oxidation and electro-Fenton processes. The results showed that both AO and EF processes could be useful strategies for TCMTB toxicity reduction in wastewaters.

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28

Abbas, Z. I., and A. S. Abbas. "Organics deterioration from aqueous solutions by electro-Fenton process." IOP Conference Series: Materials Science and Engineering 454 (December 12, 2018): 012147. http://dx.doi.org/10.1088/1757-899x/454/1/012147.

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29

Orata, E. D., P. D. P. De Leon, and B. T. Doma. "Degradation of metformin in water using electro-Fenton process." IOP Conference Series: Earth and Environmental Science 344 (November 1, 2019): 012007. http://dx.doi.org/10.1088/1755-1315/344/1/012007.

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30

Ting, Wang-Ping, Ming-Chun Lu, and Yao-Hui Huang. "Kinetics of 2,6-dimethylaniline degradation by electro-Fenton process." Journal of Hazardous Materials 161, no. 2-3 (January 2009): 1484–90. http://dx.doi.org/10.1016/j.jhazmat.2008.04.119.

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31

Li, Junfeng, Dongbao Song, Keqing Du, Zhaoyang Wang, and Chun Zhao. "Performance of graphite felt as a cathode and anode in the electro-Fenton process." RSC Advances 9, no. 66 (2019): 38345–54. http://dx.doi.org/10.1039/c9ra07525a.

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32

Ren, B. X. "Influence of anionic surfactant on the process of electro-Fenton decolorized methyl orange." Water Science and Technology 61, no. 5 (March 1, 2010): 1299–306. http://dx.doi.org/10.2166/wst.2010.037.

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The electro-Fenton process has been shown to be very successful to remove dyes from water. However, the influence of other constituents in dyeing industry wastewater, such as Sodium Dodecyl Sulfate (SDS) surfactants, has not been investigated. In this study, the effect of SDS surfactant on the kinetics of Methyl Orange degradation undergoing Electro-Fenton process was investigated. Results show that Methyl Orange degradation rate decreased as SDS concentration (below Critical Micelle Concentration, CMC) increased, which was attributed to the consumption of hydroxyl radicals (˙OH) by surfactants. The kinetics modeling indicates the reaction was the first-order reaction to Methyl Orange even SDS existing. The pseudo first-order rate constants decreased as SDS concentration increased.

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33

Yang, C. W., D. Wang, and Q. Tang. "Pretreatment of furfural industrial wastewater by Fenton, electro-Fenton and Fe(II)-activated peroxydisulfate processes: a comparative study." Water Science and Technology 70, no. 3 (May 26, 2014): 414–21. http://dx.doi.org/10.2166/wst.2014.242.

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The Fenton, electro-Fenton and Fe(II)-activated peroxydisulfate (PDS) processes have been applied for the treatment of actual furfural industrial wastewater in this paper. Through the comparative study of the three processes, a suitable pretreatment technology for actual furfural wastewater treatment was obtained, and the mechanism and dynamics process of this technology is discussed. The experimental results show that Fenton technology has a good and stable effect without adjusting pH of furfural wastewater. At optimal conditions, which were 40 mmol/L H2O2 initial concentration and 10 mmol/L Fe2+ initial concentration, the chemical oxygen demand (COD) removal rate can reach 81.2% after 90 min reaction at 80 °C temperature. The PDS process also has a good performance. The COD removal rate could attain 80.3% when Na2S2O8 initial concentration was 4.2 mmol/L, Fe2+ initial concentration was 0.1 mol/L, the temperature remained at 70 °C, and pH value remained at 2.0. The electro-Fenton process was not competent to deal with the high-temperature furfural industrial wastewater and only 10.2% COD was degraded at 80 °C temperature in the optimal conditions (2.25 mA/cm2 current density, 4 mg/L Na2SO4, 0.3 m3/h aeration rate). For the Fenton, electro-Fenton and PDS processes in pretreatment of furfural wastewater, their kinetic processes follow the pseudo first order kinetics law. The pretreatment pathways of furfural wastewater degradation are also investigated in this study. The results show that furfural and furan formic acid in furfural wastewater were preferentially degraded by Fenton technology. Furfural can be degraded into low-toxicity or nontoxic compounds by Fenton pretreatment technology, which could make furfural wastewater harmless and even reusable.

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34

Mousset, E., Z. Wang, and O. Lefebvre. "Electro-Fenton for control and removal of micropollutants – process optimization and energy efficiency." Water Science and Technology 74, no. 9 (August 5, 2016): 2068–74. http://dx.doi.org/10.2166/wst.2016.353.

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The removal of micropollutants is an important environmental and health issue. Electro-Fenton offers an electrochemical advanced treatment that is particularly effective for the breakdown of aromatic contaminants. Due to the wide variety of chemicals, it is preferable to analyze model contaminants, such as phenol, when optimizing and assessing the efficacy of a novel treatment process. In this study, we therefore made use of innovative types of electrode material and optimized operating parameters (current density and aeration rate) for the removal of phenol by electro-Fenton, with a view to maximize the energy efficiency of the process. By determining the best current density (1.25 mA cm−2), frequency of aeration (continuous) and by using a boron-doped diamond (BDD) anode, it was possible to achieve over 98.5% phenol (1 mM) removal within 1.5 h. BDD further outcompeted platinum as anode material in terms of mineralization rate and yield, and displayed low energy consumption of 0.08 kWh (g-TOC)−1, about one order of magnitude lower than other advanced oxidation processes, such as UV/TiO2 and UV/O3. Furthermore, a carbon cloth anode proved even more cost-effective than BDD if the end goal is the removal of phenol by electro-Fenton instead of complete mineralization.

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Yang, Chu Yin, Fei Xiang Chen, Jia De Wang, and Qi Liu. "Electrochemical Oxidation of Ultraviolet Absorbers in Wastewater Using Ti/PbO₂ Electrodes." Advanced Materials Research 518-523 (May 2012): 1918–23. http://dx.doi.org/10.4028/www.scientific.net/amr.518-523.1918.

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The anodic oxidation of ultraviolet absorbers in wastewater was investigated on Ti/PbO2 electrodes. Specifically, the effect of current density and pH was examined. After the 180 min of electrolysis at the current density 10 mA•cm-2 and pH 4, the COD removal efficiency and decolorization rate were 98.49% and 99.2%, respectively. Comparing electro-oxidation process with Fenton process, the former removal efficiencies of COD and color were 1.4 times and 1.2 times than that in the latter one. Additionally, the electro-oxidation did not need any chemicals while Fenton process consumed certain amount of chemicals and produced huge sludge. Such studies provided some relevant information about the applicability of electro-oxidation system for treatment of wastewater contaminated by industrial organic synthesis.

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Sun, Yan, Yi Li, Xueyue Mi, Sihui Zhan, and Wenping Hu. "Evaluation of ciprofloxacin destruction between ordered mesoporous and bulk NiMn2O4/CF cathode: efficient mineralization in a heterogeneous electro-Fenton-like process." Environmental Science: Nano 6, no. 2 (2019): 661–71. http://dx.doi.org/10.1039/c8en01279b.

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Austen, Vic, Cindy Suyitno, Tesalonica Yakoba Priskadianti Ratu Gah, Philemon Sugiarta, Shella Permatasari Santoso, Felycia Edi Soetaredjo, Kuncoro Foe, Artik Elisa Angkawidjaja, Yi-Hsu Ju, and Suryadi Ismadji. "Fenton Reagent for Organic Compound Removal in Wastewater." Journal of the Indonesian Chemical Society 3, no. 1 (April 25, 2020): 1. http://dx.doi.org/10.34311/jics.2020.03.1.1.

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The improper treatment of wastewater has cost humanity a large amount of access to clean water. Treating wastewater, by definition, means to remove pollutants, either physically or chemically. A chemical method of treating wastewater, the Fenton process, was deemed useful for the job. It includes a solution-based reaction that produces radicals to oxidize and break pollutants down. Variations of the Fenton process, each with their unique method, have been developed to increase the process’s efficacy and efficiency further. Admittedly, however, the information on this subject is relatively few, when compared to other more recent methods of treatment. This paper aims to present and discuss a wide variety of information on the Fenton process and its derivatives, including Electro-Fenton, Sono-Fenton, and Photo-Fenton among others.

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Manivasagan, V., C. Ahmed Basha, T. Kannadasan, and K. Saranya. "Degradation of Parachlorophenol by Electro-Fenton and Photo-Fenton Process Using Batch Recirculation Reactor." Portugaliae Electrochimica Acta 30, no. 6 (2012): 385–93. http://dx.doi.org/10.4152/pea.201206385.

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Li, Ya Feng, and Yi Cong Zhao. "The Treatment of Aniline Wastewater by Electro-Fenton Method." Advanced Materials Research 955-959 (June 2014): 2619–22. http://dx.doi.org/10.4028/www.scientific.net/amr.955-959.2619.

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To study the influences of different factors on the removal of aniline and COD and find out the optimal process parameters of electro-Fenton method, pH value, the dosage of Fe2+ and electrolytic voltage were changed in this experiment. The results show that the removal of aniline and COD could reach to 93.24% and 81.41% respectively when the pH was 3, the dosage of Fe2+ was 1g•L-1 and the electrolytic voltage was 15V. Consequently, electro-Fenton method is feasible as a treatment of aniline wastewater.

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Benredjem, Zahia, Karima Barbari, Imene Chaabna, Samia Saaidia, Abdelhak Djemel, Rachid Delimi, Saloua Douas, and Khaoula Bakhouche. "Comparative investigation on the removal of methyl orange from aqueous solution using three different advanced oxidation processes." International Journal of Chemical Reactor Engineering 19, no. 6 (May 19, 2021): 597–604. http://dx.doi.org/10.1515/ijcre-2020-0243.

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Abstract The Advanced Oxidation Processes (AOPs) are promising environmentally friendly technologies for the treatment of wastewater containing organic pollutants in general and particularly dyes. The aim of this work is to determine which of the AOP processes based on the Fenton reaction is more effective in degrading the methyl orange (MO) dye. The comparative study of the Fenton, photo-Fenton (PF) and electro-Fenton (EF) processes has shown that electro-Fenton is the most efficient method for oxidizing Methyl Orange. The evolution of organic matter degradation was followed by absorbance (discoloration) and COD (mineralization) measurements. The kinetics of the MO degradation by the electro-Fenton process is very rapid and the OM degradation rate reached 90.87% after 5 min. The influence of some parameters such as the concentration of the catalyst (Fe (II)), the concentration of MO, the current density, the nature and the concentration of supporting electrolyte was investigated. The results showed that the degradation rate increases with the increase in the applied current density and the concentration of the supporting electrolyte. The study of the concentration effect on the rate degradation revealed optimal values for the concentrations 2.10−5 M and 75 mg L−1 of Fe (II) and MO respectively.

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Al-Khafaji, Rand Q. kadhem, and Abdul Halim A.-K. Mohammed. "Performance of Combined Electrocoagulation-Advanced Electrochemical Oxidation Used for Oil Field Produced Water Treatment." Journal of Petroleum Research and Studies 11, no. 1 (May 7, 2021): 107–23. http://dx.doi.org/10.52716/jprs.v11i1.432.

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Considerable amounts of produced water (PW) are usually accompanied with theproduction of oil. This study proposed a combination of electrocoagulation (EC) - electro-Fenton (EF) process for oxidation organic compounds in PW to reduce the chemical oxygendemand (COD) to below regulation limits. The PW used in this study was collected fromoilfield in the Midland Oil Company. Pretreatment of the PW was conducted using batch ECtechnique with aluminum electrodes to eliminate the suspended and dissolved solids and toreduce the COD and treatment cost. Optimization of EC process revealed that optimum currentdensity, pH, and reaction time were 7.83 mA/cm2, 7.24, 20.40 minutes respectively. Underthese conditions the COD removal percentage was 73.97% starting from initial COD of 1730mg/l.Batch and continuous electro-Fenton processes were investigated using dimensionallystable anode Ti-RuO2/IrO2 and activated carbon fiber felt (ACFF) cathode. The effect ofcrucial process variables on COD removal efficiency was investigated using response surfacemethodology. A second order polynomial model equations were constructed and the resultswas analyzed by the analysis of variance (ANOVA). It was concluded that a combination ofelectrocoagulation followed by electro-Fenton process is effective for treating oilfieldproduced water and further improvement can be achieved by photo assisting the process. Atotal COR removal efficiency of 98% was achieved.

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Nguyen, Duc Dat Duc, Huy Hoang Phan Quang, Xuan Hoan Nguyen, and Tan Phong Nguyen. "The treatment of real dyeing wastewater by the electro-Fenton process using drinking water treatment sludge as a catalyst." RSC Advances 11, no. 44 (2021): 27443–52. http://dx.doi.org/10.1039/d1ra04049a.

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Le, Thanh Son. "STUDY OF SOME PARAMETERS RESPONSIBLE FOR GLYPHOSATE HERBICIDE MINERALIZATION BY ELECTRO - FENTON PROCESS." Vietnam Journal of Science and Technology 55, no. 4C (March 24, 2018): 238. http://dx.doi.org/10.15625/2525-2518/55/4c/12158.

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Glyphosate (C3H8NO3P) is a highly effective broad-spectrum, post-emergence, non- selective organophosphate herbicide and commonly applied in Viet Nam. The removal of glyphosate in aqueous solution has been investigated by electro - fenton process which is based on the continuous production of ●OH radicals by reaction between Fe2+ catalyst and H2O2 electrochemical generated on cathode. The carbon felt (60 cm2) and Pt gauze (45 cm2) were used as cathode and anode of the electro-fenton system, successively. Monitoring the total organic carbon (TOC) during the electrolysis proved that pH, current intensity, electrolysis time and catalyst concentration influenced the glyphosate mineralization efficiency. At the optimal conditions: [Fe2+] = 0.1 mM; pH = 3; [Na2SO4] = 0.05M ; I = 0.5A and the compressed air was bubbled through the solutions, the experiment results showed that 84.4 % Glyphosate was mineralized to CO2, H2O and inorganic acid after 50 min.

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Ferreira, Marta, Nihat E. Sahin, António M. Fonseca, Pier Parpot, and Isabel C. Neves. "Oxidation of pollutants via an electro-Fenton-like process in aqueous media using iron–zeolite modified electrodes." New Journal of Chemistry 45, no. 28 (2021): 12750–57. http://dx.doi.org/10.1039/d1nj01077h.

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Chen, Long, Ameet Pinto, and Akram N. Alshawabkeh. "Activated Carbon as a Cathode for Water Disinfection through the Electro-Fenton Process." Catalysts 9, no. 7 (July 12, 2019): 601. http://dx.doi.org/10.3390/catal9070601.

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Unlike many other water disinfection methods, hydroxyl radicals (HO•) produced by the Fenton reaction (Fe2+/H2O2) can inactivate pathogens regardless of taxonomic identity of genetic potential and do not generate halogenated disinfection by-products. Hydrogen peroxide (H2O2) required for the process is typically electrogenerated using various carbonaceous materials as cathodes. However, high costs and necessary modifications to the cathodes still present a challenge to large-scale implementation. In this work, we use granular activated carbon (GAC) as a cathode to generate H2O2 for water disinfection through the electro-Fenton process. GAC is a low-cost amorphous carbon with abundant oxygen- and carbon-containing groups that are favored for oxygen reduction into H2O2. Results indicate that H2O2 production at the GAC cathode is higher with more GAC, lower pH, and smaller reactor volume. Through the addition of iron ions, the electrogenerated H2O2 is transformed into HO• that efficiently inactivated model pathogen (Escherichia coli) under various water chemistry conditions. Chick–Watson modeling results further showed the strong lethality of produced HO• from the electro-Fenton process. This inactivation coupled with high H2O2 yield, excellent reusability, and relatively low cost of GAC proves that GAC is a promising cathodic material for large-scale water disinfection.

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Poureshgh, Yousef, Ali Reza Rahmani, Amir Shabanloo, Jamal Mehralipou, and Mehdi Fazlzadeh. "Degradation of Phenol in Aqueous Solutions Using Electro-Fenton Process." Research Journal of Environmental Sciences 9, no. 7 (July 1, 2015): 332–41. http://dx.doi.org/10.3923/rjes.2015.332.341.

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Jiang, Cheng-chun, and Jia-fa Zhang. "Progress and prospect in electro-Fenton process for wastewater treatment." Journal of Zhejiang University-SCIENCE A 8, no. 7 (June 2007): 1118–25. http://dx.doi.org/10.1631/jzus.2007.a1118.

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Selvabharathi, G., S. Adishkumar, G. Ginni, and S. Devi. "Treatment of Pulp and Paper Wastewater by Electro Fenton Process." Asian Journal of Research in Social Sciences and Humanities 6, no. 10 (2016): 589. http://dx.doi.org/10.5958/2249-7315.2016.01036.4.

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Matyszczak, Grzegorz, Katarzyna Krzyczkowska, and Aleksandra Fidler. "A novel, two-electron catalysts for the electro-Fenton process." Journal of Water Process Engineering 36 (August 2020): 101242. http://dx.doi.org/10.1016/j.jwpe.2020.101242.

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Trellu, Clément, Nihal Oturan, Fanta Kaba Keita, Chloé Fourdrin, Yoan Pechaud, and Mehmet A. Oturan. "Regeneration of Activated Carbon Fiber by the Electro-Fenton Process." Environmental Science & Technology 52, no. 13 (June 2018): 7450–57. http://dx.doi.org/10.1021/acs.est.8b01554.

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