Natural chalcopyrite (NCP) was used as a low-cost and efficient activator of peroxymonosulfate (PMS) to repair groundwater polluted by aged landfill leachate. The optimal remediation effect of polluted groundwater was achieved at pH 8, PMS concentration 25 mM and NCP dosage 10 g/L via response surface method. The excellent performance of NCP was mainly Fe³⁺/Fe²⁺ and Cu²⁺/Cu⁺ cycles promoted by sulfur species, which was investigated via XPS analysis. Furthermore, the transformation of SO₄^•─, ^•OH and O₂^•─ were clarified by quenching experiments and ESR. The conversion of organics was revealed by UV–vis spectra and three-dimensional fluorescence spectra. Moreover, the toxicity of polluted groundwater after remediation was significantly reduced through the growth of Chlorella pyrenoidosa. Finally, the flowing experiment using NCP/sand column showed that NCP could effectively activate PMS and thereby restore polluted groundwater.

天然黄铜矿 (NCP) 被用作低成本、高效的过硫酸盐 (PMS) 活化剂，以修复被老化垃圾渗滤液污染的地下水。响应面法在pH 8、PMS浓度25 mM、NCP用量10 g/L下对污染地下水进行了最佳修复。NCP的优异性能主要是硫物质促进的Fe ³⁺ /Fe ²⁺和Cu ²⁺ /Cu ⁺循环，通过XPS分析对其进行了研究。此外，SO ₄ ^{• ─} , ^• OH 和 O ₂的转化^{• ─}通过淬火实验和 ESR 澄清。UV-vis光谱和三维荧光光谱揭示了有机物的转化。此外，通过蛋白核小球藻的生长，修复后污染地下水的毒性显着降低。最后，使用NCP/沙柱的流动实验表明，NCP可以有效地激活PMS，从而恢复被污染的地下水。