Green rust (GR) is an intermediate product during the process of iron corrosion.
Due to its special kind of layered structure, it can easily exchange anions
from its gallery part, and can be used in water treatment. It also has the ability to incorporate
cations in the gallery. In addition, several hazardous cations can be adsorbed
and finally bonded to the hydroxide part, or replace the iron cations in the
crystal lattice, and be captured. All these properties lead GR to be efficiently advantageous
for water purification applications. In this article, we provide an overview
and literature survey on electrochemical generation of GR and modified GR, and
their applications for water treatment.
Keywords: Adsorption, anions, electrochemistry, green rust, intercalation, ion exchange, layered double hydroxides, metal
ions, reduction, surface ground water, water contaminants, water treatment.
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