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<p>The removal of pesticides from water sources is critically important for safe and clean drinking water. We investigated atrazine (ATZ) removal from various natural water sources using electrooxidation (EO) to cater to the need for safe drinking water. Under optimum operating conditions, 99% ATZ and ~ 70% TOC removal was achieved in 120&#xa0;min of electrolysis time. Radical scavenging study and Electron Spin Paramagnetic Resonance (EPR) test showed that OH radicals and singlet oxygen were primarily responsible for the ATZ removal. ATZ removal was studied using synthetic water, filtered water, and river water, and the highest removal efficiencies observed were 98.30 ± 1.02%, 84.57 ± 1.18%, and 72.51 ± 1.34%, respectively. The phytotoxicity of EO-treated water was assessed using <i>Vigna radiata</i> seeds. The seed germination percentages observed at 0, 30, 90, and 120&#xa0;min of EO treatment were 30, 50, 70, and 90%, respectively, compared to 100% obtained in the control (i.e., water without ATZ). Using solar energy as a power source instead of DC power reduced the total cost of the EO process by 12.78%. The EO process can effectively treat contaminated water, aiming to improve water quality and contributing to achieve sustainable development goals.</p> Graphical abstract <p></p>

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Sustainable Atrazine Removal from Real Water Matrices Using Solar-Powered Electrooxidation

  • 期刊论文

  • 发表日期：

    2025年3月4日

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  • Bishwatma Biswas,
  • Sudha Goel

摘要

The removal of pesticides from water sources is critically important for safe and clean drinking water. We investigated atrazine (ATZ) removal from various natural water sources using electrooxidation (EO) to cater to the need for safe drinking water. Under optimum operating conditions, 99% ATZ and ~ 70% TOC removal was achieved in 120 min of electrolysis time. Radical scavenging study and Electron Spin Paramagnetic Resonance (EPR) test showed that OH radicals and singlet oxygen were primarily responsible for the ATZ removal. ATZ removal was studied using synthetic water, filtered water, and river water, and the highest removal efficiencies observed were 98.30 ± 1.02%, 84.57 ± 1.18%, and 72.51 ± 1.34%, respectively. The phytotoxicity of EO-treated water was assessed using Vigna radiata seeds. The seed germination percentages observed at 0, 30, 90, and 120 min of EO treatment were 30, 50, 70, and 90%, respectively, compared to 100% obtained in the control (i.e., water without ATZ). Using solar energy as a power source instead of DC power reduced the total cost of the EO process by 12.78%. The EO process can effectively treat contaminated water, aiming to improve water quality and contributing to achieve sustainable development goals.

Graphical abstract