Improving the Reactivity of ZVI and NZVI Toward Various Metals and Metal(loid)s with Weak Magnetic Field
This chapter provides an overview of employing weak magnetic field (WMF) and premagnetization to improve the reactivity of ZVI toward various metal(loid)s. The rate constants of metal(loid)s sequestration by ZVI were increased by 1.1–383.7- and 1.2–12.2-fold due to the application of WMF and premagnetization, respectively. The mechanisms of WMF-induced improvement in contaminant sequestration by ZVI are also summarized. Finally, this chapter identifies the current knowledge gaps and future research needs of WMF/ZVI system for environmental application.
KeywordsNanoscale Zerovalent Iron Zerovalent Iron Weak Magnetic Field Metals Metalloids Sequestration
- Guan, X. H., Sun, Y. K., Qin, H. J., Li, J. X., Lo, I. M., He, D., & Dong, H. R. (2015b). The limitations of applying zero-valent iron technology in contaminants sequestration and the corresponding countermeasures: The development in zero-valent iron technology in the last two decades (1994-2014). Water Research, 75, 224–248.CrossRefGoogle Scholar
- Pang, S. Y., Jiang, J., Ma, J., Pang, S. Y., & Ouyang, F. (2009). New insight into the oxidation of arsenite by the reaction of zerovalent iron and oxygen. Comment on “pH dependence of Fenton reagent generation and As(III) oxidation and removal by corrosion of zero valent iron in aerated water”. Environmental Science & Technology, 43(10), 3978–3979.CrossRefGoogle Scholar
- Wang, C., & Zhang, W. (1997). Synthesizing nanoscale iron particles for rapid and complete dechlorination of TCE and PCBs. Environmental Science & Technology, 94(18), 9602–9607.Google Scholar
- Xu, C., Zhang, B., Zhu, L., Lin, S., Sun, X., Jiang, Z., & Tratnyek, P. G. (2016a). Sequestration of antimonite by zerovalent iron: Using weak magnetic field effects to enhance performance and characterize reaction mechanisms. Environmental Science & Technology, 50(3), 1483–1491.CrossRefGoogle Scholar