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<p>This study presents a sustainable electrochemical system for treating RDF-combustion wastewater. The process uses recycled aluminium cans as sacrificial anodes with conductor electrodes (Ti/Pt, graphite, and Ti/Pt/graphite) powered by solar PV energy. The effects of current density, conductor electrodes, and PV integration on pollutant degradation were examined using TSS, COD, and TOC. The process used recycled cans with over 90% Al<sub>2</sub>O<sub>3</sub> in a recirculation mode. This method achieved current densities of 2440, 4880 A, and 7321 A/m<sup>2</sup>. The Ti/Pt/graphite scrap electrode worked best for reducing TSS, COD, and TOC at 4880 A/m<sup>2</sup>. At this level, TSS removed 99.29%, COD 76.68%, and TOC 57.18%. Aluminium dissolved most efficiently at this current, with a concentration of 8.38–9.16&#xa0;mg/L. The power efficiency of the inert electrode and scrap integration kept power use stable at 0.0315–0.02&#xa0;kW (0.241 kWh/m<sup>3</sup>), which is 1–4% of the PV capacity (0.35–0.60&#xa0;kW). SEM–EDX and FTIR tests showed Al(OH)₃ was the main component in the sludge, with changes due to coagulation and oxidation. This system provides a low-cost, eco-friendly way to treat wastewater at 0.022$/m<sup>3</sup>.</p> Graphical Abstract <p></p>

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Enhancing Solar-Powered Electrocoagulation Methods Using Recycled Aluminum Can Electrodes: Impact of Current Density and Conductor Electrode on RDF Wastewater Treatment

  • 期刊论文

  • 发表日期：

    2026年5月8日

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  • Rachmad Ardhianto,
  • Yulisya Zuriatni,
  • Heri Suyanto,
  • Arseto Yekti Bagastyo,
  • Afifah Yusrina,
  • N. R. Andi Zalzabila,
  • Nashwa Oktavieandri

摘要

This study presents a sustainable electrochemical system for treating RDF-combustion wastewater. The process uses recycled aluminium cans as sacrificial anodes with conductor electrodes (Ti/Pt, graphite, and Ti/Pt/graphite) powered by solar PV energy. The effects of current density, conductor electrodes, and PV integration on pollutant degradation were examined using TSS, COD, and TOC. The process used recycled cans with over 90% Al2O3 in a recirculation mode. This method achieved current densities of 2440, 4880 A, and 7321 A/m2. The Ti/Pt/graphite scrap electrode worked best for reducing TSS, COD, and TOC at 4880 A/m2. At this level, TSS removed 99.29%, COD 76.68%, and TOC 57.18%. Aluminium dissolved most efficiently at this current, with a concentration of 8.38–9.16 mg/L. The power efficiency of the inert electrode and scrap integration kept power use stable at 0.0315–0.02 kW (0.241 kWh/m3), which is 1–4% of the PV capacity (0.35–0.60 kW). SEM–EDX and FTIR tests showed Al(OH)₃ was the main component in the sludge, with changes due to coagulation and oxidation. This system provides a low-cost, eco-friendly way to treat wastewater at 0.022$/m3.

Graphical Abstract