In this study ordered mesoporous alumina (OMA) with pore size of about 5 nm has been used for removal of dye
pollutants frombinary systems including methyl orange+ bromothymol blue,methyl orange+ reactive yellow
and methyl orange+ methyl violet. Derivative spectrophotometry was used for simultaneous determination of
the dyes concentrations. The results show that OMA is a good adsorbent for rapid removal of dyes (especially
anionic ones) from aqueous solution. Characterization of OMA has been performed by TEM and XRD techniques.
The adsorption kinetic data of binary dyemixtures follows the competitive statistical rate theory (SRT) model well.