The use of nZVI in environmental remediation offers several advantages: 1. High Reactivity: Due to its nanoscale size, nZVI has a large surface area that enhances its reactivity. 2. Versatility: nZVI can target a wide range of contaminants, including organic and inorganic pollutants. 3. Efficiency: nZVI can rapidly degrade or immobilize contaminants, leading to faster remediation processes. 4. Cost-Effectiveness: nZVI can be produced relatively inexpensively and used in situ, reducing the need for extensive excavation or transport of contaminated materials.