Adsorption Science & Technology, Journal Year: 2024, Volume and Issue: 42
Published: Jan. 1, 2024
In this study, vermiculite was modified and used in the decolorization of wastewater containing methylene blue. Taguchi experimental design method applied to process. An L 16 orthogonal array obtained according by determining five factors effective on process (pH, time, concentration, amount, temperature) four levels these factors. determined concentration as most factor. It suggested pH 3, 60 min, 5 mg.L −1 , 2 g.L 50°C optimum conditions. Equilibrium studies were carried out with Langmuir, Freundlich, Temkin, Dubinin–Radushkevich isotherm models, found be compatible Langmuir ( R = 0.9103) 0.9344) model. that material had a maximum capacity 9.60 mg.g . kinetic conducted pseudo-first-order, pseudo-second-order, intraparticle diffusion complied pseudo-first-order 0.9903) 0.9811) models. The chemical composition determined, phase analysis performed. By Branuer–Teller–Emmet analysis, it exhibited higher surface area (8.00 m /g) modifying it. seen result Fourier transform-infrared spectroscopy active functional groups similar for vermiculite. Mass losses both materials evaluated thermal analysis.
Language: Английский