article · South African Journal of Chemical Engineering
This study investigated using the electrocoagulation process to remove various dyes from textile industry effluents. Researchers focused on Reactive Red 120, Basic Blue 3, and Basic Red 46, found in wastewater from three major textile factories in Ethiopia's Amhara region. Optimal removal conditions varied for each dye, with Basic Blue 3 requiring acidic pH 3 and 80 minutes, Reactive Red 120 needing basic pH 11 and 40 minutes, and Basic Red 46 performing best at neutral pH 7 with 30 minutes of treatment. For synthetic wastewater, removal efficiencies reached 99.5% for Basic Red 46, 93.5% for Basic Blue 3, and 96.3% for Reactive Red 120 at 10 V. When applied to real textile wastewater, the method achieved 73.0% to 99.5% dye removal, demonstrating electrocoagulation as a simple, reliable, and potentially inexpensive treatment option.
Textile industry wastewater contains toxic dyes that harm human health and the environment. Developing effective and affordable treatment methods like electrocoagulation is crucial for mitigating pollution, protecting ecosystems, and ensuring sustainable industrial practices. This research offers a practical solution for reducing the environmental impact of textile production.
This research indicates that electrocoagulation is a simple, reliable, and potentially inexpensive method for treating textile industry wastewater. It could be adopted by textile factory owners to remove various dyes before discharging effluents, thereby reducing environmental pollution. The method appears to be at an applied and tested stage, showing promise for real-world implementation in industrial settings.
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Large-scale textile industries used large amounts of toxic chemicals which are very hazardous to human health and environmental sustainability. In this study, the removal of various dyes from effluents of textile industries using the electrocoagulation process was investigated. The studied dyes were Reactive Red 120 (RR-120), Basic Blue 3 (BB-3), and Basic Red 46 (BR-46), which were found in samples collected from effluents of three major textile factories in the Amhara region, Ethiopia. For maximum removal, the dye BB-3 required acidic pH 3, RR-120 basic pH 11, while BR-46 neutral pH 7 conditions. BB-3 required a longer treatment time of 80 min than BR-46 and RR-120, which required 30 and 40 min, respectively. The best removal efficiency of 99.5%, 93.5%, and 96.3% was achieved for BR-46, BB-3, and RR-120, respectively, from synthetic wastewater containing 10 mg L-1of each dye at an applied potential of 10 V. The method was applied to real textile wastewaters and 73.0 to 99.5% removal of the dyes was achieved, Indicating Electrocoagulation can be used as a simple, and reliable method for the treatment of real wastewater from textile industries. It is used as a potentially viable and inexpensive tool for the treatment of textile dyes Analysis of the electrochemically generated sludge by X-ray Diffraction, Scanning Electron Microscope, and Fourier Transform Infrared Spectroscopy revealed the expected crystalline aluminum oxides (bayerite (Al(OH)3 diaspore (AlO(OH)) found in the sludge. The amorphous phase was also found in the floc. Textile industry owners should be aware of the impact of the discharge of effluents on the Ecosystem and should use the investigated electrocoagulation method for effluent treatment before discharging into the environment.
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DOI: 10.1016/j.sajce.2023.07.015
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