Department of Chemistry, Biochemistry and Environmental Protection, Faculty of Sciences, University of Novi Sad, Trg Dositeja Obradovica 3, Novi Sad, 21000, Serbia.
Environ Geochem Health. 2023 Aug;45(8):5943-5960. doi: 10.1007/s10653-023-01609-5. Epub 2023 May 17.
In recent years, more focus has been placed on integrated metal removal processes. Electrokinetic (EK) treatment is superior to other technologies because it can be applied to a variety of mediums. Green nanoparticles, on the other hand, have the potential to significantly reduce pollutant concentrations in a short period of time. In this study, we investigated the possibility of combining green zero-valent iron (nZVI) with EK on Cd and Zn-contaminated sediment. For green synthesis, extracts of dry leaves of mulberry (ML-nZVI) and oak (OL-nZVI) were used, both abundantly present in the Republic of Serbia. The results show that, despite the fact that their availability was greatly reduced, the metals were concentrated and stabilized to a significant extent in the middle of the EK cell (z/L 0.5) after all treatments. When the results were compared, OL-nZVI proved to be a more effective nanomaterial even with smaller doses of OL-nZVI, which is important in terms of achieving better economic benefits. This study identified green nano zero-valent iron as a powerful tool for metal removal when combined with electrokinetic (EK) treatment, which improves green nZVI longevity and migration. This study of the combined green nZVI-EK remediation treatment, in particular, will have an impact on future research in this field, given the achieved efficiency.
近年来，人们更加关注集成的金属去除工艺。动电（EK）处理优于其他技术，因为它可以应用于多种介质。另一方面，绿色纳米颗粒有可能在短时间内显著降低污染物浓度。在这项研究中，我们研究了将绿色零价铁（nZVI）与 EK 结合用于处理 Cd 和 Zn 污染沉积物的可能性。对于绿色合成，使用了桑树（ML-nZVI）和橡树（OL-nZVI）干叶的提取物，这两种物质在塞尔维亚共和国都很丰富。结果表明，尽管它们的可用性大大降低，但所有处理后，金属仍在 EK 池的中间（z/L 0.5）被浓缩和稳定到很大程度。当比较结果时，OL-nZVI 被证明是一种更有效的纳米材料，即使使用较小剂量的 OL-nZVI，这对于实现更好的经济效益也很重要。本研究确定了绿色纳米零价铁是与动电（EK）处理相结合去除金属的有力工具，这提高了绿色 nZVI 的寿命和迁移率。鉴于所达到的效率，本研究特别对未来该领域的研究将产生影响。
