Due to the large output and potential ecological risks, disposal of engineering abandoned soils (EAS) has become an enormous challenge for human society. Herein, EAS has been transformed into microporous analcime (ANA) zeolite material through a fast, energy-efficient, and straightforward conversion process. The as-synthesized ANA has been employed to remediate Cu-polluted soil, which shows a significant ecological restoration function in a vegetable pot experiment. With 25 g/kg ANA into Cu contaminated soil (total Cu concentration: 200 ppm), the Cu accumulation concentration in vegetables has been decreased from 5.60 down to 1.80 mg/kg (approaching the background Cu level 1.70 mg/kg in vegetables). Detailed mechanism study combining with DFT calculations reveals that the Cu²⁺ in soil has been captured both inside the ANA pore channels and on the surface via ion-exchange and surface adsorption mechanism. The whole process, including ANA synthesis and Cu polluted soil remediation, has been optimized to show a valuable conceptual model to recycle EAS resource and in-situ remediate Cu polluted soil.

由于产量高和潜在的生态风险，工程弃土的处置已成为人类社会的巨大挑战。在本文中，EAS已经通过快速，节能且直接的转化过程转化为微孔肛门沸石（ANA）沸石材料。合成后的ANA已被用来修复Cu污染的土壤，这在蔬菜盆实验中显示出显着的生态恢复功能。通过将25 g / kg ANA浸入被Cu污染的土壤中（总Cu浓度：200 ppm），蔬菜中的Cu累积浓度已从5.60降低至1.80 mg / kg（接近背景中蔬菜中的Cu含量1.70 mg / kg）。结合DFT计算的详细机理研究表明，Cu ²⁺土壤中的离子已经通过离子交换和表面吸附机制被捕获在ANA孔隙通道内部和表面。优化了整个过程，包括ANA合成和Cu污染土壤的修复，以显示出一个有价值的概念模型，可以回收EAS资源并就地修复Cu污染土壤。