Iron oxide induced bagasse nanoparticles for the sequestration of Cr6+ ions from tannery effluent using a modified batch reactor

The emphasis of the present study is to investigate the potential of magnetic iron oxide nanoparticles synthesized using bagasse from sugarcane (M-NIOB). M-NIOB was infused onto the modified batch reactor (M-BR) stirrers using mesh structures for the adsorption of Cr6+ contained in effluent from the leather industry. M-NIOB exhibited supermagnetic properties under an external magnetic field with a saturation magnetization value of 9.192 emu/g at room temperature. M-NIOB nanoparticles were characterized by scanning electron microscopy, transmission electron microscopy, X-ray diffraction, vibrating sample magnetometer, and Brunauer-Emmett-Teller analysis. The size of the M-NIOB particles ranged from 50 to 200nm. The most favorable time, pH, and temperature for the application of M-NIOB to Cr6+ removal from tannery effluent was found to be 180min, 5, and 318 K, respectively. M-NIOB adsorbent performed its best at an adsorbent dosage of 800mg/150mL with a particle size of 150nm. Kinetic and thermodynamic studies have been conducted. The applicability of various adsorption models for the Cr6+ adsorption data was tested. Moreover, the desorption studies carried out at 60 degrees C proved the capability of M-NIOB for regeneration and reuse. Hence, M-NIOB could be potentially applied for the treatment of effluent that has Cr6+ as a major constituent. (c) 2018 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2018, 135, 46683.