The Study of Kinetics and Isotherms of Methylene Blue Adsorption onto Activated Carbon-Loaded Cellulose Composite Bead

A novel adsorbent-activated carbon-loaded cellulose composite bead (AC-CCB) was synthesized by sol-gel conversion for the removal of methylene blue (MB) from an aqueous solution. The adsorbent characterized Fourier transform-infrared spectroscopy (FT-IR), field emission scanning electron microscope (FESEM), and X-ray energy dispersive (EDAX). maximum dye found to be 96.5, 92.3, 81.8 %, corresponding MB concentrations 25, 50, 100 mgL-1, respectively. Isotherm kinetic study were carried out with AC-CCB dose 1.0 g L-1, a shaking speed 125 rpm, initial concentration ranging 25-100 mg L-1. In order kinetics adsorption onto AC-CCB, temperature fixed at 298 K, whereas, isotherm study, varied 318 K. process followed pseudo-second-order rate constant (k2) 28.7x10-2, 11.1x10-2 9.41x10-2 g.mg.min-1 50 Freundlich, Langmuir, Sips models fit well data. negative values positive suggested that spontaneous endothermic.