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Two modified layered double hydroxides (HT) have been synthesized by intercalating both sodium dodecylsulfate (SDS) and sodium dodecylbenzenesulfonate (SDBS) surfactants into Mg-Al layered double hydroxides using the calcination–rehydratation method. The prepared materials HT-SDS and HT-SDBS were characterized by X-ray diffraction, FTIR, thermal analysis and BET. The obtained materials were used for Brilliant Blue R (BBR) dye removal from aqueous solution. Batch studies were carried out to address various experimental parameters such as kinetic, pH, sorption isotherm and temperature. Sorption experiments of acid dye BBR from aqueous solution by HT-SDS and HT-SDBS were investigated in the batch system. Kinetic studies indicate that the sorption of BBR follows the pseudo-second-order model. Sorption capacities of HT-SDS (357.1 mg/g) for BBR dye were much higher than those of HT-SDBS (204.1 mg/g). The intercalated Mg-Al layered double hydroxides with SDS and SDBS could possibly be used to remove anionic dyes of relatively high concentrations, whereas HT-CO3 may only be used to remove anionic dyes of low concentrations

Dodecylsulfate and dodecybenzenesulfonate intercalated hydrotalcites as adsorbent materials for the removal of BBR acid dye from aqueous solutions