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Fluidized-bed reactor supported by copper based nanocomposite for oxidative decolourization of recalcitrant dye wastewater
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Author :
Titikshya Mohapatra, Manisha and Prabir Ghosh*
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ABSTRACT
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.
KEYWORD
Fluidized-bed oxidation, dye wastewater, nanocomposite