Original Article

Efficient degradation of aniline yellow dye using photo-Fenton advanced oxidation process: Optimization via central composite design

Authors:
Ethel Grace P. Mohammad^1,2,, Michie C. Mahino^1,, Jennelyn G. Mayormita^1,, Gizabelle E. Zayas^1,, Shaira R. Anaya^1,, Val Irvin F. Mabayo^1, , and Renato O. Arazo^1,
1College of Engineering and Technology, University of Science and Technology of Southern Philippines, Claveria 9004, Philippines
²Western Mindanao State University, Zamboanga City 7000, Philippines

ABSTRACT

Dyes are the coloring agents considered pollutants when combined in water bodies. This study used the photo-Fenton process, one of the advanced oxidation processes, to degrade aniline yellow dye (AYD). It is a primary dye that blends with any color, creating other shades of dye. Operating variables, namely initial concentration, contact time, and pH were studied in the degradation of AYD pollutants. A central composite design was applied to acquire the optimum conditions of these independent variables, resulting in the AYD degradation and eliminating up to 94.00% at pH 5 and an initial AYD concentration of 35 ppm. The removal efficiency of FeCl₃ resulted in an AYD removal of 2.03 mg per gram of FeCl₃ . The pseudo-first kinetic model best explained the mechanism of degradation and removal of AYD in aqueous solution. The results of the study showed that the photo-Fenton process using UV light from fluorescent lamp and Fenton’s reagents (H₂O₂ and FeCl₃) effectively degraded AYD in water.

Keywords: advanced oxidation process (AOP), dye removal, photocatalysis, pollutant removal, wastewater treatment

^{Available Online: 26 June 2025}

How to Cite
Mohammad EGP, Mahino MC, Mayormita JG, Zayas GE, Anaya SR, Mabayo VIF and Arazo RO. 2025. Efficient degradation of aniline yellow dye using photo-Fenton advanced oxidation process: Optimization via central composite design. The Palawan Scientist, 17(2): 33-42. https://doi.org/10.69721/TPS.J.2025.17.2.04

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