This book covers different green approaches used for the preparation of iron-based nanoparticles and their environmental remediation applications. It investi-gates various environmental applications such as antimicrobial studies, dye and heavy metal removal, and wastewater pollutant degradation by various green syn-thesized iron nanomaterials. Critical analysis of different routes and the sepa-ration techniques of iron-based nanomaterials along with the potential impacts of iron nanoparticles on human health and the atmosphere are also discussed. Overall, the authors: * Summarize all the basic aspects of synthesis and application of iron-based green nanomaterials * Explain morphological parameters of the prepared nanomaterials obtained from different routes and their specific applications * Include different separation techniques from an industrial point of view * Exclusively cover specific environmental remediation applications * Discuss the future scope and challenges of green processes This book is aimed at researchers and professionals in chemical and environmental engineering, materials science, and nanotechnology.