This paper summarized the development and mechanism of iron oxyhydroxides' absorption of heavy metal ion and photocatalysis decoloration on organic contaminants.

The pchloroaniline was prepared by catalytic reduction of pchloronitrobenzene with hydrazine in the presence of an iron oxide hydroxide catalyst.

The preparation of ferrate from dregs of ferric hydroxide and its application for decolorizing colored water;

Removal of lead and arsenic from the alkaline etching liquid by coprecipitation with calcium carbonate and ferric hydroxide;

Direct Determination of Hydroquinone in Waste Water by Differential Pulse Voltammetry on Ferric Hydroxide Modified Silicone Oil-Carbon Paste Electrode;

The preparation of a novel natural graphite based anode material coated with iron hydroxide has been studied.

IR, XRD, SEM and TEM analyses show that crystalline minerals in the iron hydroxide sediments are mainly weakly-crystallized goethite with small amounts of illite and montmorillonite.

Based on the characteristic of ammoniacal solution,add an overdose of ammonia water to the bath,which will react with iron to form iron hydroxide precipitant,thus separated from chromium bath and impurities(such as copper,zinc,nickel,etc.