In this study, a montmorillonite was pillared (17): a polycation
was intercalated between clay layers in order to obtain a
microporous material with increased interlamellar spaces and
pore volumes. This allows greater thermal stability and makes
the material a potential catalyst and adsorbent (17) as favorable
adsorption sites are created. Titanium(IV), iron(III), and
aluminum(III) polycations were used for intercalation. Arsenite
and arsenate adsorption was then carried out on these materials.
Two iron oxyhydroxides (goethite and amorphous iron hydroxide)
were synthesized and used in arsenic adsorption as a
comparative test. The desorption efficiency of the investigated
matrices was also tested