COD Reduction in Petrochemical Wastewater Using the Solar Photo-Fenton Process

Document Type : Research Paper


Chemical Engineering Department, Faculty of Energy, Kermanshah University of Technology, Kermanshah, Iran


Water has been recognized as the most fundamental factor in organisms' lives and the most widely used element in industries, while currently, the world is dealing with water scarcity in many areas. This emphasizes the importance of preventing water contamination as well as returning contaminated water produced by industries to the production and consumption cycle. Yet, the need for environmental protection is a certain principle that is generalized in today's world. This necessity has become more important with the growth of industries and technologies and subsequent contamination. Advanced oxidation technology has been substantially developed in recent decades, becoming increasingly important in the treatment process of industrial wastewaters containing resistant organic materials that cannot be removed through conventional treatment methods to reduce water quality parameters. The present study has examined the chemical oxygen demand (COD) in the synthetic monoethyl amine wastewater prepared by the solar Photo-Fenton process. Principal effective parameters in the advanced oxidation technology, including the processing time, the concentration of hydrogen peroxide ion, the concentration of iron (II) ion, and pH, were investigated by the response surface methodology (RSM) through 30 random experiments using central composite design method (CCD) to optimize reaction conditions. The most sufficient operational conditions were achieved at pH=4, [Fe2+] =2 mM, [H2O2] =20 mM, and t=90 min for the COD removal rate of 77.08%.


Du Plessis, Anja. Current and Future Water Scarcity and Stress. Water as an Inescapable Risk, Springer.2019; 13–25 ..
[2] Arzate S, Sánchez JG, Soriano-Molina P, López JC, Campos-Mañas MC, Agüera A, Pérez JS. Effect of residence time on micropollutant removal in WWTP secondary effluents by continuous solar photo-Fenton process in raceway pond reactors. Chemical Engineering Journal. 2017 May 15;316:1114-21.
[3] Liu L, He D, Pan F, Huang R, Lin H, Zhang X. Comparative study on treatment of methylene blue dye wastewater by different internal electrolysis systems and COD removal kinetics, thermodynamics and mechanism. Chemosphere. 2020 Jan 1;238:124671.
[4] Mohadesi M, Aghel B, Gouran A, Razmegir MH. Oil Refinery Wastewater Treatment by Advanced Oxidation Processes for Chemical Oxygen Demand Removal using the Box-Behnken Method. Journal of Chemical and Petroleum Engineering. 2020 Jun 1;54(1):35-46.
[5] Chuang YH, Szczuka A, Shabani F, Munoz J, Aflaki R, Hammond SD, Mitch WA. Pilot-scale comparison of microfiltration/reverse osmosis and ozone/biological activated carbon with UV/hydrogen peroxide or UV/free chlorine AOP treatment for controlling disinfection byproducts during wastewater reuse. Water research. 2019 Apr 1;152:215-25.
[6] Karimi S, Shokri A, Aghel B. Remediation of spent caustic in the wastewater of oil refinery by photo-Fenton process. Archives of Hygiene Sciences. 2020 Jul 10;9(3):179-88.
[7] Karci A, Wurtzler EM, Armah A, Wendell D, Dionysiou DD. Solar photo-Fenton treatment of microcystin-LR in aqueous environment: transformation products and toxicity in different water matrices. Journal of hazardous materials. 2018 May 5;349:282-92.
[8] Deng Y. Advanced oxidation processes (AOPs) for reduction of organic pollutants in landfill leachate: a review. International Journal of Environment and Waste Management. 2009 Jan 1;4(3-4):366-84.
[9] Moersidik SS, Nugroho R, Handayani M, Pratama MA. Optimization and reaction kinetics on the removal of Nickel and COD from wastewater from electroplating industry using Electrocoagulation and Advanced Oxidation Processes. Heliyon. 2020 Feb 1;6(2):e03319.
[10] Sirés I, Brillas E, Oturan MA, Rodrigo MA, Panizza M. Electrochemical advanced oxidation processes: today and tomorrow. A review. Environmental Science and Pollution Research. 2014 Jul;21(14):8336-67.
[11] Baena-Moreno FM, Rodríguez-Galán M, Vega F, Vilches LF, Navarrete B, Zhang Z. Biogas upgrading by cryogenic techniques. Environmental Chemistry Letters. 2019 Sep;17(3):1251-61.
[12] Yang W, Zhou M, Oturan N, Li Y, Oturan MA. Electrocatalytic destruction of pharmaceutical imatinib by electro-Fenton process with graphene-based cathode. Electrochimica Acta. 2019 May 10;305:285-94.
[13] Giannakis S. A review of the concepts, recent advances and niche applications of the (photo) Fenton process, beyond water/wastewater treatment: surface functionalization, biomass
Journal of Chemical and Petroleum Engineering 2021, 55(1): 69-81 81
treatment, combatting cancer and other medical uses. Applied Catalysis B: Environmental. 2019 Jul 5;248:309-19.
[14] Su CC, Chen CM, Anotai J, Lu MC. Removal of monoethanolamine and phosphate from thin-film transistor liquid crystal display (TFT-LCD) wastewater by the fluidized-bed Fenton process. Chemical engineering journal. 2013 Apr 15;222:128-35.
[15] Harada T, Yatagai T, Kawase Y. Hydroxyl radical generation linked with iron dissolution and dissolved oxygen consumption in zero-valent iron wastewater treatment process. Chemical Engineering Journal. 2016 Nov 1;303:611-20.
[16] Palaniandy P, Aziz HB, Feroz S. Treatment of petroleum wastewater using combination of solar photo-two catalyst TiO2 and photo-Fenton process. Journal of Environmental Chemical Engineering. 2015 Jun 1;3(2):1117-24.
[17] Durán A, Monteagudo JM, Gil J, Expósito AJ, San Martín I. Solar-photo-Fenton treatment of wastewater from the beverage industry: Intensification with ferrioxalate. Chemical Engineering Journal. 2015 Jun 15;270:612-20.
[18] uzmán J, Mosteo R, Sarasa J, Alba JA, Ovelleiro JL. Evaluation of solar photo-Fenton and ozone based processes as citrus wastewater pre-treatments. Separation and Purification Technology. 2016 May 30;164:155-62.
[19] Federation WE, APH Association. Standard methods for the examination of water and wastewater. American Public Health Association (APHA): Washington, DC, USA. 2005.
[20] El-sousy K, Hussen A, Hartani K, El–Aila H. Elimination of organic pollutants using supported catalysts with hydrogen peroxide. Jordan Journal of Chemistry (JJC). 2007 Jan 1;2(1):97-103.