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All Journal AJARCDE (Asian Journal of Applied Research for Community Development and Empowerment)
Olly Norita Tetra
Department of Chemistry, Faculty of Mathematics and Natural Sciences, Andalas University, Padang 25163, Indonesia
Agriculture, Biological Sciences & Forestry Earth & Planetary Sciences Education Energy Environmental Science

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Electrocoagulation Removal of Binary Remazol Brilliant Blue and Rhodamine B Dyes Using Aluminum Electrodes : English Muhammad Nazir; Olly Norita Tetra; Emriadi Emriadi
AJARCDE (Asian Journal of Applied Research for Community Development and Empowerment) Vol. 10 No. 3 (2026)
Publisher : Asia Pacific Network for Sustainable Agriculture, Food and Energy (SAFE-Network)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29165/ajarcde.v10i3.1362

Abstract

The use of synthetic dyes, such as Remazol Brilliant Blue (RBB) and Rhodamine B (RhB), in the textile industry generates wastewater that is difficult to biodegrade and poses a potential threat to aquatic environments. This study aimed to optimize the operational parameters of the electrocoagulation process using aluminum (Al) electrodes for the removal of RBB and RhB in single and binary dye system. The investigated parameters included dye concentration, electrocoagulation time, pH, applied voltage, inter-electrode distance, and binary dye composition. Dye removal efficiency was determined by UV–Vis spectrophotometry, using the respective maximum absorption wavelengths for single-dye systems and a simultaneous equation method based on the Beer–Lambert law for the binary system to account for spectral overlap. The optimum conditions were obtained at a dye concentration of 10 mg/L, an electrocoagulation time of 75 min, pH 6, an applied voltage of 5 V, and an inter-electrode distance of 1 cm. Under these conditions, the removal efficiencies reached 94.59% for RBB and 73.35% for RhB in the single-dye system, and 89.19% for RBB and 66.50% for RhB in the binary dye system . Fourier Transform Infrared Spectroscopy (FTIR) analysis indicated that dye removal occurred through adsorption and entrapment within the coagulant flocs, while optical microscopy revealed anode dissolution and layer formation on the cathode after electrocoagulation. These findings suggest that electrocoagulation using aluminum electrodes is an effective and simple method for treating synthetic textile wastewater containing RBB and RhB dyes. Contribution to Sustainable Development Goals (SDGs):SDG 6: Clean Water and SanitationSDG 9 : Industry, Innovation and InfrastructureSDG 12: Responsible Consumption and ProductionSDG 13: Climate ActionSDG 14: Life Below Water
Co-Authors Emriadi - Muhammad Nazir