A new, green and eco-friendly biocomposite based on Preyssler (H14[NaP5W30O110]) heteropolyacid
supported on activated rice bran was prepared by a chemical impregnation method. The
biocomposite catalyst was characterized by Fourier transform infrared and scanning electron microscopy.
Decolorization of methyl red, methyl orange and methylene blue as carcinogenic and toxic
dyes in textile wastewaters have been investigated in order to contribute toward clean technology,
which is the most important need of the society. The performance of eco-friendly Preyssler/rice bran
biocomposite was compared with rice bran and capability of the rice bran is found to be lower than
the Preyssler/rice bran. In all cases, the synthesized biocomposite, was easily recovered and recycled
with retention of their initial structure and activity. The results indicated that the decolorization of
methyl red, methyl orange and methylene blue follows zero order kinetics.
Keywords: Preyssler, heteropolyacid, activated rice bran, toxic dyes.
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