Optimizing the operational parameters of nanographene-based cathode electrode in Electro-Fenton process for treatment of textile industry wastewater containing a mixture of dyes

Authors

  • Mahdie Farajifirozabad Department of Environmental Health Engineering, School of Public Health and Safety, Shahid Beheshti University of Medical Sciences, Tehran, Iran
  • Akbar Eslami Environmental and Occupational Hazards Control Research Center, Research Institute for Health Sciences and Environment, Shahid Beheshti University of Medical Sciences, Tehran, Iran https://orcid.org/0000-0001-7856-2677
  • Aahmadreza Yazdanbaksh Department of Environmental Health Engineering, School of Public Health and Safety, Shahid Beheshti University of Medical Sciences, Tehran, Iran https://orcid.org/0000-0002-9564-9042
  • Ali Shahidinejad Department of Environmental Health Engineering, School of Public Health and Safety, Shahid Beheshti University of Medical Sciences, Tehran, Iran
  • Marjan Hashemi Environmental and Occupational Hazards Control Research Center, Research Institute for Health Sciences and Environment, Shahid Beheshti University of Medical Sciences, Tehran, Iran

DOI:

https://doi.org/10.54693/piche.05213

Abstract

This study aimed to evaluate the effectiveness of the electro-Fenton process in the treatment of textile wastewater using carbon felt modified with graphene nanoparticles as the cathode and a thin film of platinum as the anode. The primary characteristics of wastewater, including COD, color, BOD5, pH, electrical conductivity (EC), and chlorides, were measured. Factors affecting the efficiency of the electro-Fenton process were studied. The optimum conditions were determined as follows: the inlet airflow of 1 (L/min), pH=2.5, the current intensity of 200 mA, and ferrous ion concentration of 1.5 mM. Based on the results maximum system decolorization and COD removal rates were 94.31% in 120 minutes and 57.47% in 30 minutes of reaction respectively. Dye removal efficiency increases due to graphene particles on the carbon felt and increasing surface area. Also, the application of the platinum electrode and the role of this electrode in anode oxidation causes an increase in the efficiency of dye removal. Because the electro-Fenton process is carried out at acidic pH, it is necessary to conduct pH modification on the final effluent of this process.

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Published

2024-06-05

How to Cite

Farajifirozabad, M., Eslami, A., Yazdanbaksh, A., Shahidinejad, A., & Hashemi, M. (2024). Optimizing the operational parameters of nanographene-based cathode electrode in Electro-Fenton process for treatment of textile industry wastewater containing a mixture of dyes. Journal of the Pakistan Institute of Chemical Engineers, 52(1). https://doi.org/10.54693/piche.05213

Issue

Vol. 52 No. 1 (2024): Journal of the Pakistan Institute of Chemical Engineers

Section

Articles

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