Magnetic Nanomaterials for Water Remediation

This chapter presents a short view on the applications of magnetic nanomaterials for water remediation. Water remediation approaches can be divided into several basic categories: physical techniques like filtration, adsorption, sedimentation, flotation; chemical methods including flocculation, reduction and oxidation, ion exchange, electrocoagulation; biological means and combined technology. In particular, zero‐valent iron (ZVI) play critical role in water remediation mainly by corrosion process and mass transfer between contaminants. From an environmental point of view, the combination of magnetic and adsorption technology is considered a promising alternative to produce novel adsorbents used in water treatment field. Advanced oxidation processes (AOPs) play a significant role in handling refractory pollutants in water, photochemical catalysis and Fenton degradation are the two most applied approaches in this field recently, focusing on magnetic nanomaterials, some other approaches including ozonation, chemical oxidation and reduction such as mineralization and dechlorination, nitrate reduction and oxygen activation degradation are also investigated.