Zeolites as Adsorbents and Photocatalysts for Removal of Dyes from the Aqueous Environment.

This study investigated the potential of zeolites (NHBETA, NHZSM-5, and NaY) to remove two frequently used dyes, methylene blue (MB) and rhodamine B (RB), from an aqueous environment. The removal of dyes with zeolites was performed via two mechanisms: adsorption and photocatalysis. Removal of dyes through adsorption was achieved by studying the Freundlich adsorption isotherms, while photocatalytic removal of dyes was performed under UV irradiation.