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Indian Journal of Chemical Technology (IJCT) >
IJCT Vol.17 [2010] >
IJCT Vol.17(5) [September 2010] >
| Title: | Visible light-driven photocatalytic degradation and mineralization of neutral red dye in a slurry photoreacter |
| Authors: | Pare, Brijesh
Singh, Pardeep
Jonnalagadda, S B |
| Keywords: | Photocatalysis
Vis/ZnO process
Neutral red
Decolourization
Aromatic ring destruction
Mineralization |
| Issue Date: | Sep-2010 |
| Publisher: | NISCAIR-CSIR, India |
| Abstract: | Hydroxyl radicals (OH.) induced photocatalytic degradation
of neutral red was investigated in a batch slurry reactor, in the
presence of visible light illuminated ZnO. The effects of process parameters
such as catalyst loading, initial substrate
concentration, Fenton reagent, temperature, solar light and
oxidant, and anion concentration were investigated. In the
presence of visible light, ZnO/Fenton process was found to be most efficient
for the decolorization of dye. Both artificial visible radiation and solar
light degraded dye efficiently in the presence of ZnO. The destruction of
chromophoric part and aromatic
skelton of dye were ascertained by the disappearance of
absorption bands in UV/Vis spectra of dye with respect to
irradiation time. Complete COD reduction was observed in 8 h of irradiation
time. CO2 and NO3- ions were
identified as final
mineralization products. |
| Page(s): | 391-395 |
| CC License: |  CC Attribution-Noncommercial-No Derivative Works 2.5 India |
| ISSN: | 0975-0991 (Online); 0971-457X (Print) |
| Source: | IJCT Vol.17(5) [September 2010]
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