Using of Taguchi Robust Design Method to Optimize Effective Parameters of Methylene Blue Adsorption on ZSM-5 Zeolite

Abstract

Adsorption of methylene blue from aqueous solution by synthesized zeolite as adsorbent was studied by using Taguchi methods. To understand and optimize the adsorption condition, three factors were selected i.e., methylene blue concentration, contact time and the adsorbent dose, as the main affecting parameters. A Taguchi's L₁₆4³ design was used to optimize the effect of the chosen parameters, Four initial concentrations of 30, 40, 50 and 60 mg/L and four adsorbent doses of 0.005, 0.01, 0.015 and 0.02 g were selected. The experiments were conducted for 50, 150, 250 and 350 min. The maximum adsorption of methylene blue achieved with 0.02 g of zeolite, solution concentration of 30 mg/L and contact time of 180 min. The theoretical calculation was in good agreement with the experimental results.