Radiation synthesis, characterization and dye adsorption of alginate-organophilic montmorillonite nanocomposite

► In this study CA/OMMT nanocomposites were synthesized via a radiation method. ► The system is efficient and fast for the removal of anionic dyes from waters. ► Higher adsorption capacity is due to higher mesoporous volume of the adsorbent. ► The rate determining step of the adsorption process is particle diffusion. ► Thermodynamic data indicate that the adsorption process was spontaneous and exothermic.