Oxidative sorption of arsenite from water by iron: a mechanistic perspective

Abstract

Removal of arsenite by oxidation and sorption via various iron particles (ZVI, bimetallic particles, iron (oxyhydr)oxides, bi- and tri-metal oxides, structural Fe(ii) hydroxides and ferrate), and their respective removal methodologies are discussed.

Efficient arsenic coagulation by serpentine-mediated iron hydroxides

“…12,13 Therefore, one of the most widely used methods is the in situ formation of highly active iron oxides based on the hydrolysis of iron salts to achieve arsenic adsorption and coagulation. 14,15 Commonly used ferric coagulants include ferric, 16 ferrous, 17 ferrate and polymeric ferric salts. 18 Satisfactory As(V) treatment effects are obtained with most of these iron salt-based coagulation methods, but poor performance has been observed for As(III), with higher migration due to the weaker interaction between As(III) and Fe.…”