Fluidized-bed reactor supported by copper based nanocomposite for oxidative decolourization of recalcitrant dye wastewater

Department of Chemical Engineering, National Institute of Technology Raipur, Raipur-492 010, Chhattisgarh, India
E-mail: prabirg.che@nitrr.ac.in
Manuscript received online 15 April 2020, accepted 12 June 2020

Dye, a colouring compound, is commonly found in various industrial wastewaters like textile, paper and pulp, tannery etc. In this present work, a novel catalyst copper based nanocomposite (Cu-Clay/CS) was synthesized via co-precipitation method in an ultrasonic probe sonicator. Characterization of Cu-Clay/CS was obtained by scanning electron microscopy (SEM), energy- dispersive X-ray spectroscopy (EDX) and Fourier transform infrared spectroscopy (FTIR). The catalytic activity of prepared catalyst was investigated by Fenton-like oxidation of Eosin Yellow (EY) dye wastewater in a fluidized-bed reactor. The Fenton-like oxidation of dye wastewater was carried out by varied experimental parameters such as pH, oxidant concentration (H₂O₂) and support material dosage to optimize the process efficiency. About 82.3% of the decolourization efficiency was achieved also it showed decrease in the decolourization efficiency with excess of oxidant addition due to scavenging effect. Stability and reusability of catalyst was also studied.