Research Progress of Removal of Pollutants from Wastewater by Zero-valent Aluminum

Abstract

In recent years, the use of zero-valent metals (ZVMs) to treat environmental pollutants has been a research hotspot in the field of environment.Zero valent aluminium (ZVAl) has attracted much attention due to its lower redox potential and amphoteric properties (reaction pH can be extended to alkaline) than other metals. In this paper, zero-valent aluminium and its composite materials are used to treat pollutants in wastewater, including phenols, organic halides, azo dyes organic pollutants and perchlorate, Cr(VI), As(III) inorganic pollutants. The removal effect and reaction mechanism were also clarified. The existing problems and bottlenecks of this method are further discussed, and the development direction and application prospect of zero-valent metal aluminium redox technology are prospected.