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Ahmad A. Aabid
ahmadchemical1991@uomosul.edu.iq
https://orcid.org/0000-0003-0909-7331
Ibtehal K. Shakir
ibtehal.kareem@coeng.uobaghdad.edu.iq
https://orcid.org/0009-0009-7088-4386

Abstract

Due to the serious wizards that industrial waste causes to humans, animals, and plants, besides the fact that wastewater from refineries contains many harmful compounds and that this type of industry is prevalent in most countries, the issue of protecting the environment from industrial waste is importance at the recent time. The organic contaminants elimination from the wastewater connected with the Iraqi refinery at Qayyarah served as our case study. The chemical oxygen demand (COD) was the organic contaminants measure. A titanium electrode (cathode) and an aluminum electrode (anode) were combined with the electrocoagulation and Photo-Fenton-processes. Using a Mini Tab program, the Taguchi method Utilizing statistical techniques, successfully obtained the outcomes and final values. The most effective removal of COD was 90.148. With a standard deviation of 2.651, the best conditions for this experiment were as follows: The time required to achieve this removal efficiency was 50 minutes, 8 pH, 400 mg/L of hydrogen peroxide, 20 mg/L of ferrous sulfate, and a current density of 15 mA cm-2. Through ANOVA analysis of this process, it was found that the current density (C.D.) significantly influenced the removal efficiency, affecting it by 47.79%, followed by the electrolytic solution effect by 18.31%, and the hydrogen peroxide and ferrous sulfate concentrations effect by 12.55% and 2.36%, respectively. Also, a mathematical equation was found to describe the studied case. The reaction kinetics were also investigated, and the reaction rate constant (cm/s) was determined at ideal conditions, with km = 6.60546 x 10-5.

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Aabid, A. A., & Shakir, I. K. (2023). Electrocoagulation Coupled Fenton Process for Treating Refinery Wastewater Using a Cylindrical Design of Ti and Al Electrodes. Tikrit Journal of Engineering Sciences, 30(4), 19–27. https://doi.org/10.25130/tjes.30.4.3
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