Adsorption Kinetics of Bromophenol Blue and Eriochrome Black T using Bentonite Carbon Composite Material
نویسندگان
چکیده
The present study deals with the adsorption of Bromophenol blue (BB) and Erichrome black T (EBT) – two anionic dyes – onto bentonite carbon composite material (BCC). Batch studies were performed to evaluate the influence of various experimental parameters such as: pH, contact time, adsorbent dose and initial dye concentration. The optimal conditions for the dyes removal were found to be at pH = 1, applying a dose of 10 g.L and 20 g.L and for an equilibrium time of 40 mins for both dyes BB and EBT removal, respectively. The results also showed that process followed pseudo-second-order rate expression for dyes with a degree of intraparticle diffusion for BB and intraparticle and pore diffusion for EBT and it was found to be best represented by the Freundlich isotherm.
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