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<p>A novel electrooxidation (EO) unit was investigated for disinfecting wastewater, offering a promising alternative. This study continuously treated simulated bacterial wastewater using a mixed metal oxide (MMO) anode, mimicking hospital ward conditions. Optimal disinfection (96% bacterial inactivation) was achieved in continuous mode at a current density of 7.14&#xa0;mA/cm<sup>2</sup>, 0.2&#xa0;g/L NaCl, 9&#xa0;min treatment time, and 40 mL/min flow rate. Real sewage wastewater achieved 92% inactivation at 8&#xa0;min under these conditions. The MMO anode remained durable and effective after 300 cycles. EO presents a robust and affordable technology with an electrical consumption of 0.184 kWh/m<sup>3</sup> and an operational cost of $1.88/m<sup>3</sup>. These findings suggest this EO technique is a viable approach for decentralized wastewater treatment in hospital infectious wards, with the potential for real-world application.</p>

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Continuous once-through electrooxidation treatment using mixed metal oxide anode for bacterial disinfection

  • 期刊论文

  • 出版模式：

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  • 发表日期：

    2025年10月2日

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  • Poulomi Chandra,
  • Anoop Verma,
  • Aastha Palta,
  • Vijay Luxami,
  • Diptiman Choudhury

摘要

A novel electrooxidation (EO) unit was investigated for disinfecting wastewater, offering a promising alternative. This study continuously treated simulated bacterial wastewater using a mixed metal oxide (MMO) anode, mimicking hospital ward conditions. Optimal disinfection (96% bacterial inactivation) was achieved in continuous mode at a current density of 7.14 mA/cm2, 0.2 g/L NaCl, 9 min treatment time, and 40 mL/min flow rate. Real sewage wastewater achieved 92% inactivation at 8 min under these conditions. The MMO anode remained durable and effective after 300 cycles. EO presents a robust and affordable technology with an electrical consumption of 0.184 kWh/m3 and an operational cost of $1.88/m3. These findings suggest this EO technique is a viable approach for decentralized wastewater treatment in hospital infectious wards, with the potential for real-world application.