TY - JOUR ID - 33349 TI - Fe3O4/AC nanocomposite as a novel nano adsorbent for effective removal of cationic dye: Process optimization based on Taguchi design method, kinetics, equilibrium and thermodynamics JO - Journal of Water and Environmental Nanotechnology JA - JWENT LA - en SN - 2476-7204 AU - Ghasemi, Maryam AU - Mashhadi, Somaye AU - Azimi-Amin, Javad AD - Young Researchers and Elite Club, Arak Branch, Islamic Azad University, Arak, Iran AD - Department of Agriculture, University of Mehrgan, Mahalat, Iran Y1 - 2018 PY - 2018 VL - 3 IS - 4 SP - 321 EP - 336 KW - Magnetite nanoparticles KW - Nanocomposite KW - Methylene blue KW - Taguchi method KW - Microwave-induced DO - 10.22090/jwent.2018.04.005 N2 - In this study, we have synthesized a new Fe3O4/AC nanocomposite using low cost adsorbent by microwave assisted in situ co-precipitation technique that was used as an effective adsorbent for the removal of methylene blue (MB) using the Taguchi design method as an optimization strategy. The optimum parameters are pH 7, Fe3O4/AC nanocomposite dose 0.03 g, contact time 30 min, initial concentration of MB 25 mg/L and temperature 298 K. The obtained results of ANOVA show that their percent contribution in descending order is pH (66.81%) > adsorbent dose (25.54%) > temperature (4.83%) > initial MB concentration (1.23%) > contact time (0.32%). The kinetic data were fitted to the pseudo-first-order, pseudo-second-order and intra-particle diffusion models and adsorption of MB dye followed pseudo-second-order kinetic. The obtained values of regression coefficient for Langmuir (0.98), Frendluich (0.93) and Dubinin–Radushkevich (0.94) showed that adsorption process fits to the Langmuir isotherm and the maximum adsorption capacity is 384.6 mg/g. Moreover, the thermodynamics studies suggested the spontaneous nature of adsorption process. UR - https://www.jwent.net/article_33349.html L1 - https://www.jwent.net/article_33349_63d4333673dc8fcb8cbe6d3db4362834.pdf ER -