Treatment of Basic Red 29 dye solution using iron-aluminum electrode pairs by electrocoagulation and electro-Fenton
Yusuf Yavuz1, Reza Shahbazi, A Savaş Koparal
1Department of Environmental Engineering, Anadolu University, Eskisehir, Turkey, yuyavuz@anadolu.edu.tr.
Summary
Hybrid iron-aluminum electrodes effectively treat Basic Red 29 (BR29) dye using electrocoagulation and electro-Fenton methods. Both processes achieved over 95% dye removal, offering a promising solution for textile wastewater.
Area of Science:
- Environmental Chemistry
- Water Treatment Technologies
Background:
- Textile industry wastewater often contains persistent dyes like Basic Red 29 (BR29).
- Conventional treatment methods may be insufficient for complete dye removal and decolorization.
Purpose of the Study:
- To evaluate the efficacy of electrocoagulation and electro-Fenton processes using hybrid iron-aluminum electrodes for BR29 dye removal.
- To determine optimal operating conditions and assess treatment performance, including dye degradation, COD reduction, and toxicity mitigation.
Main Methods:
- Investigated the influence of current density, initial pH, supporting electrolyte, hydrogen peroxide (H₂O₂), and initial dye concentration.
- Analyzed UV-Vis spectra, toxicity, and Chemical Oxygen Demand (COD) removal under optimized conditions.
- Employed hybrid iron-aluminum electrodes for both electrocoagulation and electro-Fenton treatments.
Main Results:
- Both electrocoagulation and electro-Fenton methods demonstrated high efficiency (>95%) in removing BR29 dye.
- Optimal conditions led to >95% BR29 dye removal and 71.43% COD removal within 20 and 40 minutes, respectively.
- Electro-Fenton showed higher effectiveness, with promising toxicity reduction results.
Conclusions:
- Hybrid iron-aluminum electrodes are highly effective for treating BR29 dye solutions via electrocoagulation and electro-Fenton.
- Both methods offer a viable and efficient approach for decolorization and pollutant removal in textile wastewater.
- Electro-Fenton is superior, but electrocoagulation also presents a successful alternative for industrial applications.
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