Removal of methylene blue from aqueous solution using zeolite synthesized from different coal fly ashes samples

Química Nova

Instituto de Pesquisas Energéticas e Nucleares, São Paulo, Brasil¹  Bruno, Mariza¹  Fungaro, Denise Alves¹ 

关键词: zeolite;    methylene blue;    dye adsorption.;   

DOI  :  10.1590/S0100-40422009000400024

学科分类：化学（综合）

来源: Sociedade Brasileira de Quimica

【 摘 要 】

Batch sorption experiments were carried out to remove methylene blue from its aqueous solutions using zeolites synthesized from fly ashes as an adsorbent. The adsorbents were characterized by XFR, XRD and SEM. Nearly 90 min of contact time are found to be sufficient for the adsorption of dye to reach equilibrium. Equilibrium data have been analyzed using Langmuir and Freundlich isotherms and the results were found to be well represented by the Freundlich isotherm equation. Adsorption data were fitted to both Lagergren first-order and pseudo-second-order kinetic models and the data were found to follow pseudo-second-order kinetics.

【 授权许可】

Unknown