The degradation of an azo dye in a batch slurry photocatalytic reactor. Akyol, A. & Bayramoglu, M. CHEMICAL ENGINEERING AND PROCESSING, 47(12):2150-2156, 2008. abstract bibtex The photocatalytic degradation of a commercial azo-reactive textile
dye, Remazol Red F-3B, has been investigated in a batch slurry reactor
using semiconductor catalysts like, ZnO and TiO2, and two UV sources
emitting mainly at 254 and 365 rim. Non-irradiated catalysts and
non-catalyzed UV irradiation have negligible effect on the dye
degradation. Initial pH. dye concentration, light power and catalyst
loading as well as the catalyst type and UV wavelength are considered
as process variables. The results showed that decolorization and TOC
removal efficiencies of ZnO are higher under 365 nm UV. On the other
hand, when two photocatalysts are compared, the decolorization
performance of ZnO is higher than TiO2 under 365 nm UV. while TiO2
performs better under 254 nm UV. Furthermore, from the TOC removal
point, TiO2 performs better than ZnO irrespective of the UV wavelength.
TiO2 irradiated under 254 nm UV degrades successfully both benzene and
naphthalene derivatives. (C) 2007 Elsevier B.V. All rights reserved.
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title = {The degradation of an azo dye in a batch slurry photocatalytic reactor},
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pages = {2150-2156},
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abstract = {The photocatalytic degradation of a commercial azo-reactive textile
dye, Remazol Red F-3B, has been investigated in a batch slurry reactor
using semiconductor catalysts like, ZnO and TiO2, and two UV sources
emitting mainly at 254 and 365 rim. Non-irradiated catalysts and
non-catalyzed UV irradiation have negligible effect on the dye
degradation. Initial pH. dye concentration, light power and catalyst
loading as well as the catalyst type and UV wavelength are considered
as process variables. The results showed that decolorization and TOC
removal efficiencies of ZnO are higher under 365 nm UV. On the other
hand, when two photocatalysts are compared, the decolorization
performance of ZnO is higher than TiO2 under 365 nm UV. while TiO2
performs better under 254 nm UV. Furthermore, from the TOC removal
point, TiO2 performs better than ZnO irrespective of the UV wavelength.
TiO2 irradiated under 254 nm UV degrades successfully both benzene and
naphthalene derivatives. (C) 2007 Elsevier B.V. All rights reserved.},
bibtype = {article},
author = {Akyol, Abdurrahman and Bayramoglu, Mahmut},
journal = {CHEMICAL ENGINEERING AND PROCESSING},
number = {12}
}
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