Efficient Extraction of U(Ⅵ) from Uranium-Containing Wastewater over a Wide pH Range Using Sulfonate-Rich Electrode Materials.

Sulfonate-rich polypyrrole electrodes achieve a maximum U(VI) capacity of 667.4 mg g−1 at pH 6, enabling efficient uranium removal over a broad pH range.

• Why it matters: Removing uranium from wastewater across varying pH levels is difficult with traditional materials due to protonation and side reactions, limiting treatment effectiveness.
• What they did: The study developed a sulfonic acid-rich polypyrrole electrode by grafting DSDA onto PPy-COOH, enhancing U(VI) binding and electrochemical reduction, tested across different pH conditions.
• The result: The electrode demonstrated superior uranium removal capacity, pH adaptability, and reusability, offering a promising strategy for selective, efficient, and sustainable wastewater remediation.