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Indian Journal of Chemistry -Section A (IJC-A) >
IJC-A Vol.48A [2009] >
IJC-A Vol.48A(10) [October 2009] >
| Title: | Artificial light assisted photocatalytic degradation of lissamine fast yellow dye in ZnO suspension in a slurry batch reactor |
| Authors: | Pare, Brijesh
Singh, Pardeep
Jonnalgadda, S B |
| Keywords: | Photocatalysis
Degradations
Dyes
Azo dyes
Zinc oxide |
| Issue Date: | Oct-2009 |
| Publisher: | CSIR |
| IPC Code: | Int. Cl.9 B01J23/06; C09B27/00 |
| Abstract: | The photocatalytic degradation of lissamine fast yellow has been carried
out in the aqueous suspension of ZnO under artificial light. The effects of
process parameters such as catalyst loading, H2O2, FeCl3,
etc., on the extent of degradation have been studied. The influence of pH,
bubbling of N2 and O2 and temperature on degradation of
the dye has also been studied. ZnO
degrades the dye effectively in the presence of both artificial and solar
light. The pH has a significant
effect on reaction rate. H2O2, O2, and FeCl3
have a synergetic effect on degradation of the dye. The rate constant has an
optimal value at 35°C. N2 has a detrimental effect on dye degradation. Both Fe3+/ZnO/AR
and H2O2/Fe3+/ZnO/AR processes have been found
to be effective for the decolorisation of dye. However, the H2O2/Fe3+/ZnO/AR
process is more efficient for the decolorisation of the selected dye. Increased
COD-removal percentage, significant release of NO3- and
SO42- ions and UV-vis spectral analysis confirm
mineralization of the selected dye in aqueous phase. Power law has been applied
to find the net rate of degradation. |
| Page(s): | 1364-1369 |
| ISSN: | 0975-0975 (Online); 0376-4710 (Print) |
| Source: | IJC-A Vol.48A(10) [October 2009]
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