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<p>Copper slag (CS) has great potential for wastewater treatment. In this study, copper-doped nano-zero-valent iron composite (CS-nZVI/Cu) was synthesized from copper slag (CS) by acid leaching and sodium borohydride reduction. CS-nZVI/Cu achieved 93.9% efficiency in removing Cr(VI) at pH = 3. In addition, CS-nZVI/Cu exhibits good stability and selectivity. The high Cr (VI) removal capacity is attributed to the synergistic effects of enhanced dispersion of the copper slag matrix, electron transfer facilitated by Cu<sup>0</sup>, adsorption, and chemical reduction. Overall, CS-nZVI/Cu provides a promising approach for the remediation of Cr(VI)-contaminated wastewater and the high-value utilization of copper slag.</p>

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Facile Synthesis of Iron-Based Materials(CS-nZVI/Cu) Derived from Copper Slag for Efficient Removal of Hexavalent Chromium

  • 期刊论文

  • 发表日期：

    2026年3月16日

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  • Kaisheng Wu,
  • Le Liu,
  • Zheren Zhang,
  • Duoduo Liu,
  • Yunzhu Wang,
  • Nengsheng Liu,
  • Sufang He,
  • Xiang Li

摘要

Copper slag (CS) has great potential for wastewater treatment. In this study, copper-doped nano-zero-valent iron composite (CS-nZVI/Cu) was synthesized from copper slag (CS) by acid leaching and sodium borohydride reduction. CS-nZVI/Cu achieved 93.9% efficiency in removing Cr(VI) at pH = 3. In addition, CS-nZVI/Cu exhibits good stability and selectivity. The high Cr (VI) removal capacity is attributed to the synergistic effects of enhanced dispersion of the copper slag matrix, electron transfer facilitated by Cu0, adsorption, and chemical reduction. Overall, CS-nZVI/Cu provides a promising approach for the remediation of Cr(VI)-contaminated wastewater and the high-value utilization of copper slag.